EP0976135A1 - Resistors formed of aluminum-titanium alloys - Google Patents
Resistors formed of aluminum-titanium alloysInfo
- Publication number
- EP0976135A1 EP0976135A1 EP98922040A EP98922040A EP0976135A1 EP 0976135 A1 EP0976135 A1 EP 0976135A1 EP 98922040 A EP98922040 A EP 98922040A EP 98922040 A EP98922040 A EP 98922040A EP 0976135 A1 EP0976135 A1 EP 0976135A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- mol percent
- resistor
- aluminum
- additional metal
- resistors
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- UQZIWOQVLUASCR-UHFFFAOYSA-N alumane;titanium Chemical compound [AlH3].[Ti] UQZIWOQVLUASCR-UHFFFAOYSA-N 0.000 title description 6
- 229910001069 Ti alloy Inorganic materials 0.000 title description 5
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 31
- 239000000956 alloy Substances 0.000 claims abstract description 31
- 229910052751 metal Inorganic materials 0.000 claims abstract description 26
- 239000002184 metal Substances 0.000 claims abstract description 26
- 239000010936 titanium Substances 0.000 claims abstract description 20
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 14
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 14
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 13
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 13
- 239000000203 mixture Substances 0.000 claims description 13
- 239000000463 material Substances 0.000 claims description 11
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 9
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 9
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims description 5
- 229910052796 boron Inorganic materials 0.000 claims description 5
- 239000011651 chromium Substances 0.000 claims description 5
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052804 chromium Inorganic materials 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 229910052742 iron Inorganic materials 0.000 claims description 4
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- 229910052759 nickel Inorganic materials 0.000 claims description 4
- 229910052720 vanadium Inorganic materials 0.000 claims description 4
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 claims description 4
- 229910052723 transition metal Inorganic materials 0.000 claims description 3
- 150000003624 transition metals Chemical class 0.000 claims description 3
- 150000002739 metals Chemical class 0.000 abstract description 6
- 238000005259 measurement Methods 0.000 description 6
- 238000002844 melting Methods 0.000 description 4
- 230000008018 melting Effects 0.000 description 4
- 239000010935 stainless steel Substances 0.000 description 4
- 229910001220 stainless steel Inorganic materials 0.000 description 4
- 229910000570 Cupronickel Inorganic materials 0.000 description 3
- YOCUPQPZWBBYIX-UHFFFAOYSA-N copper nickel Chemical compound [Ni].[Cu] YOCUPQPZWBBYIX-UHFFFAOYSA-N 0.000 description 3
- 229910001256 stainless steel alloy Inorganic materials 0.000 description 3
- 239000000788 chromium alloy Substances 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 229910001120 nichrome Inorganic materials 0.000 description 2
- 229910000623 nickel–chromium alloy Inorganic materials 0.000 description 2
- 239000000523 sample Substances 0.000 description 2
- 239000010965 430 stainless steel Substances 0.000 description 1
- 229910002482 Cu–Ni Inorganic materials 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- -1 for example Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000009877 rendering Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C3/00—Non-adjustable metal resistors made of wire or ribbon, e.g. coiled, woven or formed as grids
Definitions
- the present invention relates to resistors adapted for use in electrical circuits and formed of aluminum-titanium alloys.
- Heavy duty power resistors are commonly employed in electrical circuits to control electrical current flow by converting electrical energy to heat, which may then be dissipated into the surrounding environment. Normally, resistors rated at 300
- power resistors typically have been made from nickel-chromium alloys (NiChromes), copper-nickel alloys (Cu-Ni) or stainless steel alloys, with FeCrAl, 304 and 430 being the most common stainless steel types.
- Stainless steel is often modified with additional metals to improve its electrical characteristics, for example, resistivity and changes in resistivity levels over an operating temperature range. While all of these materials may be used in high temperature applications, i.e. up to about 1000°C, they all have one or more shortcomings which compromise their use.
- the nickel-chromium alloys commonly referred to NiChrome materials are expensive and heavy, both of which factors limit their use in a wide range of applications.
- the copper-nickel alloys are expensive and exhibit relatively low working temperatures and melting points.
- the copper-nickel alloys are disadvantageous in that they are not readily available in sheet form.
- the stainless steel alloys also exhibit a relatively low resistivity and typically the resistivities of these alloys vary substantially over a temperature range, thereby rendering the alloys unsuitable for applications requiring precise resistivity
- the type 430 stainless steel which is commonly employed is slightly magnetic and therefore unsuitable for low inductance applications.
- Various modified forms of stainless steel are also slightly magnetic and therefore unsuitable for low inductance applications.
- These modified stainless steel alloys are also typically more expensive and therefore not attractive for widespread use.
- the resistors are formed of an alloy comprising from about 50 to 95 mol percent aluminum, from about 5 to about
- the resistors according to the present invention are strong, lightweight and non-magnetic. Additionally, the resistors according to the present invention exhibit nearly constant resistivity over a wide operating temperature range. The alloys from which the resistors are formed exhibit a good combination of ductility, material density and melting point to allow
- the Figure sets forth resistivity measurements for various resistors according to the present invention over a temperature range of from about 25 °C to 600°C, as described in further detail herein.
- the resistors according to the present invention are adapted for use in an electrical circuit and may be formed of any conventional resistor structure. As known in the art, resistors are employed to control current flow in an electrical circuit. Preferably, the resistor will include connectors for facilitating connection of the resistor into an electrical circuit in a conventional manner.
- the resistors of the present invention are suitable for use in a variety of applications, including heavy duty environments requiring resistors rated at 10 watts and above.
- the resistors according to the present invention are formed of an alloy which comprises from about 50 to about 95 mol percent aluminum, from about 5 to about 50 mol percent titanium and up to about 15 mol percent of at least one additional metal
- aluminum-titanium alloys from which the present resistors are formed provide lightweight yet strong resistors. Additionally, the combination of ductility, resistivity, density and melting point exhibited by these alloys facilitates formation of the alloys into resistors of desired shapes and sizes, particularly when the alloys comprise at least one additional metal or a combination of additional metals in an amount up to about 15 mol percent. Additionally, the alloys from which the present resistors are formed exhibit good corrosion resistance without disadvantageous ⁇ effecting the resistivity properties.
- the resistors according to the present invention are
- the resistors according to the present invention are formed from an alloy comprising from about 65 to about 70 mol percent aluminum, from about 20 to about 30 mol percent titanium and from about 5 to about 10 mol percent of at least one additional metal.
- the at least one additional metal comprises one or more transition metals of groups IB-VIIB or group VIII, although other metals, for example, boron, may be employed, alone or in combination with one or more transition metals.
- the additional metal is selected from the group consisting of copper, manganese, iron,
- the alloys chromium, vanadium, nickel, boron, and mixtures thereof.
- the alloys chromium, vanadium, nickel, boron, and mixtures thereof.
- the alloys from which the resistors of the present invention are formed may themselves be formed in accordance with conventional metal alloying techniques.
- the alloys may be formed to resistors in accordance with techniques known in the art and particularly processing such as annealing, pressing, cutting, drilling and the like are facilitated with the alloys according to the present invention, particularly wherein at least one additional metal is included in the aluminum-titanium
- Example 1 various aluminum-titanium alloys are formed and subjected to measurement of Vickers hardness according to ASTM-E92 using a load of 200 gf.
- the approximate molar composition and hardness of each alloy is set forth in Table 1.
- the hardness value for each allow is presented as an average of six measured values.
- the alloys were formed as resistors, inserted into an electrical circuit and subjected to measurement of resistivity over a temperature range of from ambient to about 600°C according to the four probe technique known in the art.
- the area and length of each resistor sample subjected to measurement is set forth in Table 2, and the results of the resistivity measurements are set forth in the Figure.
- the Figure also provides
- resistors according to the present invention generally exhibit consistent resistivity over wide temperature ranges and at a variety of levels, thereby demonstrating that the resistors according to the present invention are suitable for use in a variety of applications, including precision
- the resistivities according to the invention vary by not more than about 50%, more preferably by not more than about 30%, and even more preferably by not more than about 10%), over a temperature range of from about 25°C to about 600°C. Additionally, the non-magnetic, lightweight, corrosion resistance and strength characteristics of the resistors according to the present invention contribute to their
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Apparatuses And Processes For Manufacturing Resistors (AREA)
- Non-Adjustable Resistors (AREA)
- Conductive Materials (AREA)
Abstract
Resistors for use in electrical circuits are formed of an alloy comprising from about 50 to about 95 mol percent aluminum, from about 5 to about 50 mol percent titanium and up to about 15 mol percent of at least one additional metal or a combination of two or more additional metals.
Description
RESISTORS FORMED OF ALUMINUM-TITANIUM ALLOYS
FIELD OF THE INVENTION
The present invention relates to resistors adapted for use in electrical circuits and formed of aluminum-titanium alloys.
BACKGROUND OF THE INVENTION Heavy duty power resistors are commonly employed in electrical circuits to control electrical current flow by converting electrical energy to heat, which may then be dissipated into the surrounding environment. Normally, resistors rated at 300
watts and above are considered power resistors. Typically, power resistors have been made from nickel-chromium alloys (NiChromes), copper-nickel alloys (Cu-Ni) or stainless steel alloys, with FeCrAl, 304 and 430 being the most common stainless steel types. Stainless steel is often modified with additional metals to improve its electrical characteristics, for example, resistivity and changes in resistivity levels over an operating temperature range. While all of these materials may be used in high
temperature applications, i.e. up to about 1000°C, they all have one or more shortcomings which compromise their use.
For example, the nickel-chromium alloys commonly referred to NiChrome materials are expensive and heavy, both of which factors limit their use in a wide range of applications. On the other hand, the copper-nickel alloys are expensive and exhibit relatively low working temperatures and melting points. Additionally, the copper-nickel alloys are disadvantageous in that they are not readily available in sheet form. The stainless steel alloys also exhibit a relatively low resistivity and typically the resistivities of these alloys vary substantially over a temperature range, thereby rendering the alloys unsuitable for applications requiring precise resistivity
requirements. Additionally, the type 430 stainless steel which is commonly employed is slightly magnetic and therefore unsuitable for low inductance applications. Various modified forms of stainless steel are also slightly magnetic and therefore unsuitable for low inductance applications. These modified stainless steel alloys are also typically more expensive and therefore not attractive for widespread use.
Accordingly, there is a continuing need for new resistors which would be suitable for widespread use, and particularly in heavy duty environments.
SUMMARY OF THE INVENTION
Accordingly, it is an object of the present invention to provide new resistors
which may be advantageously employed in various applications owing to a desirable
combination of properties. It is a further object of the invention to provide nonmagnetic and lightweight resistors. It is a related object to provide such resistors which can be rated at 10 watts and above and which may be employed in heavy duty
power environments. It is another object to provide resistors which may be employed in high temperature applications and in a temperature range of -40 to 1200°C.
These and additional objects are satisfied by the present invention which is
directed to resistors adapted for use in electrical circuits. The resistors are formed of an alloy comprising from about 50 to 95 mol percent aluminum, from about 5 to about
50 mol percent titanium and up to about 15 mol percent of at least one additional
metal or a combination of two or more additional metals. The resistors according to the present invention are strong, lightweight and non-magnetic. Additionally, the resistors according to the present invention exhibit nearly constant resistivity over a wide operating temperature range. The alloys from which the resistors are formed exhibit a good combination of ductility, material density and melting point to allow
efficient manufacture of the resistors.
These and additional objects and advantages provided by the present invention will be more fully understood in view of the following detailed description.
BRIEF DESCRIPTION OF THE DRAWING
The Figure sets forth resistivity measurements for various resistors according to the present invention over a temperature range of from about 25 °C to 600°C, as described in further detail herein.
DETAILED DESCRIPTION The resistors according to the present invention are adapted for use in an electrical circuit and may be formed of any conventional resistor structure. As known in the art, resistors are employed to control current flow in an electrical circuit.
Preferably, the resistor will include connectors for facilitating connection of the resistor into an electrical circuit in a conventional manner. The resistors of the present invention are suitable for use in a variety of applications, including heavy duty environments requiring resistors rated at 10 watts and above. The resistors according to the present invention are formed of an alloy which comprises from about 50 to about 95 mol percent aluminum, from about 5 to about 50 mol percent titanium and up to about 15 mol percent of at least one additional metal
or a combination of additional metals. The present inventors have discovered that the
aluminum-titanium alloys from which the present resistors are formed provide lightweight yet strong resistors. Additionally, the combination of ductility, resistivity, density and melting point exhibited by these alloys facilitates formation of the alloys into resistors of desired shapes and sizes, particularly when the alloys comprise at least one additional metal or a combination of additional metals in an amount up to about 15 mol percent. Additionally, the alloys from which the present resistors are formed exhibit good corrosion resistance without disadvantageous^ effecting the resistivity properties.
In a preferred embodiment, the resistors according to the present invention are
formed of an alloy comprising from about 60 to about 90 mol percent aluminum, or more preferably from about 60 to about 80 mol percent aluminum, from about 5 to
about 30 mol percent titanium and from about 5 to about 15 mol percent of at least one additional metal. In a further preferred embodiment, the resistors according to the present invention are formed from an alloy comprising from about 65 to about 70 mol percent aluminum, from about 20 to about 30 mol percent titanium and from about 5 to about 10 mol percent of at least one additional metal. In one embodiment, the at
least one additional metal comprises one or more transition metals of groups IB-VIIB or group VIII, although other metals, for example, boron, may be employed, alone or in combination with one or more transition metals. In a preferred embodiment, the additional metal is selected from the group consisting of copper, manganese, iron,
chromium, vanadium, nickel, boron, and mixtures thereof. Generally, the alloys
according to the invention exhibit densities in the range of from about 3.35 to about 4 g/cm3. These alloys have melting points greater than 1200°C, which facilitate their use in high temperature environments.
The alloys from which the resistors of the present invention are formed may themselves be formed in accordance with conventional metal alloying techniques.
Additionally, the alloys may be formed to resistors in accordance with techniques known in the art and particularly processing such as annealing, pressing, cutting, drilling and the like are facilitated with the alloys according to the present invention, particularly wherein at least one additional metal is included in the aluminum-titanium
alloy.
The resistors according to the present invention are demonstrated in further detail in the following example. In the example and throughout the present specification, parts and percentages are on a molar basis unless otherwise specified.
Example In this example, various aluminum-titanium alloys are formed and subjected to measurement of Vickers hardness according to ASTM-E92 using a load of 200 gf. The approximate molar composition and hardness of each alloy is set forth in Table 1. The hardness value for each allow is presented as an average of six measured values.
TABLE 1
The alloys were formed as resistors, inserted into an electrical circuit and subjected to measurement of resistivity over a temperature range of from ambient to about 600°C according to the four probe technique known in the art. The area and length of each resistor sample subjected to measurement is set forth in Table 2, and the results of the resistivity measurements are set forth in the Figure. The Figure also
sets forth the resistivity measurements of a standard resistor formed of stainless steel
SS2C.
TABLE 2
The results set forth in the Figure demonstrate that resistors according to the present invention generally exhibit consistent resistivity over wide temperature ranges and at a variety of levels, thereby demonstrating that the resistors according to the present invention are suitable for use in a variety of applications, including precision
applications wherein significant variations in resistivity are to be avoided. Preferably,
the resistivities according to the invention vary by not more than about 50%, more preferably by not more than about 30%, and even more preferably by not more than about 10%), over a temperature range of from about 25°C to about 600°C. Additionally, the non-magnetic, lightweight, corrosion resistance and strength characteristics of the resistors according to the present invention contribute to their
advantageous use in a variety of applications.
The specific embodiments and examples set forth herein are provided to
illustrate various embodiments of the invention and are not intended to be limiting thereof. Additional embodiments within the scope of the present claims will be
apparent to one of ordinary skill in the art.
Claims
1. A resistor adapted for use in an electrical circuit and formed of an alloy comprising from about 50 to about 95 mol percent aluminum, from about 5 to about 50 mol percent titanium, and up to about 15 mol percent of at least one additional metal.
2. A resistor as defined by claim 1 , formed of an alloy comprising from
about 60 to about 80 mol percent aluminum, from about 5 to about 30 mol percent titanium, and from about 5 to about 15 mol percent of at least one additional metal.
3. A resistor as defined by claim 2, wherein the additional metal comprises a transition metal.
4. A resistor as defined by claim 2, formed of an alloy comprising from about 65 to about 70 mol percent aluminum, from about 20 to about 30 mol percent
titanium, and from about 5 to about 10 mol percent of at least one additional metal.
5. A resistor as defined by claim 4, wherein the additional metal is selected from the group consisting of copper, manganese, iron, chromium, vanadium, nickel, boron, and mixtures thereof.
6. A resistor as defined by claim 1, formed of an alloy consisting essentially of aluminum, titanium and an additional metal selected from the group consisting of copper, manganese, iron, chromium, vanadium, nickel, boron, and mixtures thereof.
7. A resistor as defined by claim 1 , formed of an alloy consisting of aluminum and titanium.
8. A resistor as defined by claim 1, formed of a material of the
approximate molar composition Al063Cuo 12Ti025.
9. A resistor as defined by claim 1, formed of a material of the approximate molar composition Al^Mn^sT^.
10. A resistor as defined by claim 1 , formed of a material of the approximate molar composition Al067Fe008Ti025.
11. A resistor as defined by claim 1 , formed of a material of the
approximate molar composition Al06gB007Ti025.
12. A resistor as defined by claim 1 , formed of a material of the approximate molar composition Al067Cr008Ti025.
13. A resistor as defined by claim 1 , formed of a material of the approximate molar composition Al067V008Ti025.
14. A resistor as defined by claim 1 , formed of a material of the approximate molar composition Al067Ni008Ti025.
15. A resistor as defined by claim 1 , formed of a material of the approximate molar composition Al079Ni0 MTi007.
16. A resistor as defined by claim 1 , adapted for operation over a temperature range of from ambient up to about 600 ┬░C.
17. An electrical circuit, comprising a current source and at least one resistor formed of an alloy comprising from about 50 to about 95 mol percent aluminum, from about 5 to about 50 mol percent titanium and up to about 15 mol percent of at least one additional metal.
18. An electrical circuit as defined by claim 17, wherein the resistor is formed of an alloy comprising from about 60 to about 80 mol percent aluminum, from about 5 to about 30 mol percent titanium and from about 5 to about 15 mol percent of
at least one additional metal.
19. An electrical circuit as defined by claim 18, wherein the additional metal is selected from the group consisting of copper, manganese, iron, chromium,
vanadium, nickel, boron, and mixtures thereof.
20. A method of controlling current flow in an electrical circuit, comprising including in the electrical circuit a resistor formed of an alloy comprising from about 50 to about 95 mol percent aluminum, from about 5 to about 50 mol percent titanium and up to about 15 mol percent of at least one additional metal.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US4463097P | 1997-04-18 | 1997-04-18 | |
| US44630P | 1997-04-18 | ||
| PCT/US1998/007794 WO1998048431A1 (en) | 1997-04-18 | 1998-04-17 | Resistors formed of aluminum-titanium alloys |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP0976135A1 true EP0976135A1 (en) | 2000-02-02 |
Family
ID=21933429
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP98922040A Withdrawn EP0976135A1 (en) | 1997-04-18 | 1998-04-17 | Resistors formed of aluminum-titanium alloys |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0976135A1 (en) |
| AU (1) | AU7467298A (en) |
| WO (1) | WO1998048431A1 (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1124104B (en) * | 1979-06-13 | 1986-05-07 | Fusani Giovanni | ALUMINUM IRON ALLOYS INTENDED MAINLY BUT NOT EXCLUSIVELY FOR THE MANUFACTURE OF ELEMENTS FOR RESISTORS IN GENERAL AND IN PARTICULAR FOR STRONG CURRENTS AND PROCEDURE FOR THEIR PRODUCTION |
| JPS58153752A (en) * | 1982-03-08 | 1983-09-12 | Takeshi Masumoto | Ni-cr alloy material |
| JPS59118848A (en) * | 1982-12-27 | 1984-07-09 | Sumitomo Light Metal Ind Ltd | Structural aluminum alloy having improved electric resistance |
| JPH0621326B2 (en) * | 1988-04-28 | 1994-03-23 | 健 増本 | High strength, heat resistant aluminum base alloy |
| US5157373A (en) * | 1991-03-08 | 1992-10-20 | Post Glover Resistors, Inc. | Post glover resistor |
| JPH0565584A (en) * | 1991-09-05 | 1993-03-19 | Yoshida Kogyo Kk <Ykk> | Production of high strength aluminum alloy powder |
-
1998
- 1998-04-17 AU AU74672/98A patent/AU7467298A/en not_active Abandoned
- 1998-04-17 WO PCT/US1998/007794 patent/WO1998048431A1/en not_active Application Discontinuation
- 1998-04-17 EP EP98922040A patent/EP0976135A1/en not_active Withdrawn
Non-Patent Citations (1)
| Title |
|---|
| See references of WO9848431A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| WO1998048431A1 (en) | 1998-10-29 |
| AU7467298A (en) | 1998-11-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| RU2201990C2 (en) | Alloy iron-cobalt | |
| KR20160021195A (en) | Resistor alloy, component produced therefrom and production method therefor | |
| EP0057935A2 (en) | Temperature sensitive amorphous magnetic alloy | |
| JP3168158B2 (en) | Ni-based heat-resistant brazing material with excellent wettability and corrosion resistance | |
| JP2017053015A (en) | Resistive material | |
| EP0116437B1 (en) | Brazing alloy | |
| GB2109823A (en) | Nickel-base welding electrode | |
| EP1193446B1 (en) | Glow plug | |
| CA1044921A (en) | Nickel base alloys having a low coefficient of thermal expansion | |
| CN109321784B (en) | Samarium-Containing Soft Magnetic Alloys | |
| US6538554B1 (en) | Resistors formed of aluminum-titanium alloys | |
| KR100803684B1 (en) | Austenitic Fe-Cr-Ni alloys used in high temperature applications | |
| CA2087389C (en) | Heater sheath alloy | |
| WO2005081685A3 (en) | High-alloy metals reinforced by diamond-like framework and method of making the same | |
| EP0976135A1 (en) | Resistors formed of aluminum-titanium alloys | |
| US811859A (en) | Electric resistance element. | |
| DE69524746D1 (en) | AUSTENITIC Ni-BASED ALLOY WITH HIGH CORROSION RESISTANCE, STABLE STRUCTURE AND GOOD WORKABILITY | |
| CN1216379C (en) | Resistance material | |
| US5006054A (en) | Low density heat resistant intermetallic alloys of the Al3 Ti type | |
| CA1041065A (en) | Thermometric bimetal of high strength at high temperature | |
| GB2051127A (en) | Precipitation hardening copper alloys | |
| JP3522821B2 (en) | bimetal | |
| JPS6117895B2 (en) | ||
| US5160382A (en) | Heater sheath alloy | |
| US4891184A (en) | Low density heat resistant intermetallic alloys of the Al3 Ti type |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| 17P | Request for examination filed |
Effective date: 19991110 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE |
|
| 17Q | First examination report despatched |
Effective date: 20010712 |
|
| GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
| GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
| GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
| 18D | Application deemed to be withdrawn |
Effective date: 20030121 |