US3497404A - Cast flare composition of magnesium dispersed in a matrix,mostly sodium nitrate - Google Patents
Cast flare composition of magnesium dispersed in a matrix,mostly sodium nitrate Download PDFInfo
- Publication number
- US3497404A US3497404A US794779*A US3497404DA US3497404A US 3497404 A US3497404 A US 3497404A US 3497404D A US3497404D A US 3497404DA US 3497404 A US3497404 A US 3497404A
- Authority
- US
- United States
- Prior art keywords
- magnesium
- cast
- matrix
- nitrate
- sodium nitrate
- 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.)
- Expired - Lifetime
Links
- VWDWKYIASSYTQR-UHFFFAOYSA-N sodium nitrate Chemical compound [Na+].[O-][N+]([O-])=O VWDWKYIASSYTQR-UHFFFAOYSA-N 0.000 title description 24
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical group [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 title description 19
- 239000000203 mixture Substances 0.000 title description 18
- 229910052749 magnesium Inorganic materials 0.000 title description 15
- 239000011777 magnesium Substances 0.000 title description 15
- 235000010344 sodium nitrate Nutrition 0.000 title description 12
- 239000004317 sodium nitrate Substances 0.000 title description 12
- 239000011159 matrix material Substances 0.000 title description 9
- ZCCIPPOKBCJFDN-UHFFFAOYSA-N calcium nitrate Chemical compound [Ca+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O ZCCIPPOKBCJFDN-UHFFFAOYSA-N 0.000 description 14
- 150000003839 salts Chemical class 0.000 description 13
- PQXKHYXIUOZZFA-UHFFFAOYSA-M lithium fluoride Chemical compound [Li+].[F-] PQXKHYXIUOZZFA-UHFFFAOYSA-M 0.000 description 12
- IIPYXGDZVMZOAP-UHFFFAOYSA-N lithium nitrate Chemical compound [Li+].[O-][N+]([O-])=O IIPYXGDZVMZOAP-UHFFFAOYSA-N 0.000 description 8
- 230000007423 decrease Effects 0.000 description 6
- 239000002002 slurry Substances 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 description 4
- 239000011833 salt mixture Substances 0.000 description 4
- LPXPTNMVRIOKMN-UHFFFAOYSA-M sodium nitrite Chemical compound [Na+].[O-]N=O LPXPTNMVRIOKMN-UHFFFAOYSA-M 0.000 description 4
- -1 alkaline earth metal nitrite Chemical class 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000005303 weighing Methods 0.000 description 3
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 2
- 229910002651 NO3 Inorganic materials 0.000 description 2
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 2
- AZFNGPAYDKGCRB-XCPIVNJJSA-M [(1s,2s)-2-amino-1,2-diphenylethyl]-(4-methylphenyl)sulfonylazanide;chlororuthenium(1+);1-methyl-4-propan-2-ylbenzene Chemical compound [Ru+]Cl.CC(C)C1=CC=C(C)C=C1.C1=CC(C)=CC=C1S(=O)(=O)[N-][C@@H](C=1C=CC=CC=1)[C@@H](N)C1=CC=CC=C1 AZFNGPAYDKGCRB-XCPIVNJJSA-M 0.000 description 2
- 229910052783 alkali metal Inorganic materials 0.000 description 2
- 229910001963 alkali metal nitrate Inorganic materials 0.000 description 2
- 150000001340 alkali metals Chemical class 0.000 description 2
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 2
- 229910001964 alkaline earth metal nitrate Inorganic materials 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- RAFRTSDUWORDLA-UHFFFAOYSA-N phenyl 3-chloropropanoate Chemical compound ClCCC(=O)OC1=CC=CC=C1 RAFRTSDUWORDLA-UHFFFAOYSA-N 0.000 description 2
- 239000004323 potassium nitrate Substances 0.000 description 2
- 235000010333 potassium nitrate Nutrition 0.000 description 2
- 239000004304 potassium nitrite Substances 0.000 description 2
- 235000010289 potassium nitrite Nutrition 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 235000010288 sodium nitrite Nutrition 0.000 description 2
- 229910013553 LiNO Inorganic materials 0.000 description 1
- IOVCWXUNBOPUCH-UHFFFAOYSA-M Nitrite anion Chemical compound [O-]N=O IOVCWXUNBOPUCH-UHFFFAOYSA-M 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
- F21K5/00—Light sources using charges of combustible material, e.g. illuminating flash devices
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S149/00—Explosive and thermic compositions or charges
- Y10S149/11—Particle size of a component
- Y10S149/114—Inorganic fuel
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S149/00—Explosive and thermic compositions or charges
- Y10S149/116—Flare contains resin
Definitions
- Cast high-intensity illuminating flares contain a coarse magnesium powder dispersed in a matrix of a solidified salt melt containing principally sodium nitrate with a minor amount of another alkali metal or alkaline earth metal nitrate or nitrite.
- This invention relates to pyrotechnic illuminating flares and more particularly to cast flares that emit white light.
- the cast pyrotechnics do not show the impact sensitivity of conventional compressed pyrotechnics.
- Sodium nitrate melts at 308 C. and starts to dissociate at temperatures only slightly above its melting point. Accordingly, molten sodium nitrate or salt mixtures containing a high proportion of sodium nitrate have not heretofore been used in cast pyrotechnics.
- This invention is based on my discovery that coarse magnesium powder can be mixed with a salt melt consisting of sodium nitrate and a minor amount of alkali metal or alkaline earth metal nitrite or nitrate, at a temperature up to about 310 C. to form a castable slurry.
- the slurry when cast into an appropriate casing and allowed to freeze forms a flare of magnesium dispersed in a solidified salt matrix that burns brilliantly and evenly to provide to a steady, high intensity illumination.
- the burning rate of the flare compositions can be greatly decreased, without decreasing total light output, by addition of minor amounts of lithium fluoride.
- the salt melt is principally anhydrous sodium nitrate and contains from about 5-25 of added salt that may be anhydrous alkaline earth metal nitrite, alkali metal nitrite, alkaline earth metal nitrate, alkali metal nitrate other than sodium, suitably calcium nitrite, sodium nitrite, potassium nitrite, calcium nitrate, lithium nitrate or potassium nitrate or mixtures thereof.
- These mixtures are fully melted at temperatures of about 275-290 C. and can be further heated to about 310 C. without decomposition. It is desirable to heat the mixtures Well above the melting point to increase the fluidity of the melt and facil- ICC itate mixing with the magnesium powder. I have also found that these salt mixtures Wet magnesium and hence are specially easily mixed to form a uniform slurry.
- the proportion of metal to oxidizer salt is between about 1 and 1.85 parts metal to each part salt, preferably between 1.25 and 1.50 to 1.
- the flares are in use normally ignited at one end and burn lengthwise, the flare life depending on the rate at which the burning front proceeds lengthwise of the flare, designated as linear burning rate.
- the linear burning rate can be substantially adjusted, suitably from 4-10 seconds per inch, by adjusting the proportion of magnesium to salt, the magnesium particle size and the amount of added salt. Burning rate decreases with increasing amounts of magnesium up to about 60% by weight magnesium and then increases with further increase in magnesium content. Increasing the amount of added salt decreases burning rate with some decrease in brightness. It is presently preferred to use mixtures of calcium nitrate and lithium nitrate as added salts since their use provides increased flare life with a minimum decrease in brightness.
- lithium fluoride to the flare compositions, as a component of the matrix, greatly reduces the burning rate without any decrease in total light output but with, of course, a corresponding decrease in brightness.
- Any amount of lithium fluoride up to about 10% by weight of the matrix is effective, the higher the amount used the slower the burning rate.
- This use of lithium fluoride is desirable to meet requirements in which brightness can be sacrificed for longer flare life.
- flares of this invention that have a life of 30-45 seconds have a life of about seconds when modified by the addition of about 10% lithium fluoride to the matrix.
- the flares of this invention are highly resistant to accidental ignition or explosion by ballistic impact. For example, they are non-igniting when struck by .30-caliber ammunition, either ball or armor piercing, fired at a distance of 30 feet or greater. Conventionl compressed flares can be ignited by ISO-caliber ball ammunition at a distance of about 200 feet.
- Example l.Fifteen parts calcium nitrate and 85 parts of sodium nitrate are heated in a metal furnace pot. The mixture is held at 150 C. for a short time to allow evaporation of the water of hydration of the calcium nitrate. The temperature is then raised to about 300 C., the mixture being completely melted at about 280 C. parts of magnesium powder, passing a 30 mesh (Tyler) and retained on a 70 mesh screen, was added to the molten salt and stirred until a homogeneous slurry was obtained. The slurry was poured into an aluminum casing and allowed to freeze. The resultant solid flare, weighing 350 grams, was 7 inches long and burned for 35 seconds giving 250,000 candles of light.
- Example 2 The procedure of Example 1 was repeated using 155 parts of 30-70 mesh magnesium, and a salt mixture of 20 parts NaNO and 80 parts NaNO The resultant cast flare, 7 inches long and weighing 350 grams, burned for 25 seconds providing 375,000 candles of light.
- Example 3 The procedure of Example 1 was repeated using parts magnesium, 15 parts LiNO 10 parts Ca(NO and 75 parts NaNO The resultant cast flare, 7 inches long and weighing 325 grams, burned for 45 seconds giving 280,000 candles of light.
- a flare composition consisting essentially of about 1 to 1.85 parts of magnesium particles larger than about 70-mesh dispersed in 1 part of matrix consisting essentially of solidified molten-salt mixture containing sodium nitrate, between about 0 and 10% lithium fluoride, and between about 5 and 25% a member selected from the group consisting of calcium nitrate, lithium nitrate, potassium nitrate, calcium nitrite, sodium nitrite, potassium nitrite and mixtures thereof.
- composition according to claim 1 having between about 1.25 and 1.50 parts magnesium per 1 part of matrix.
- composition according to claim 2 in Which said member is calcium nitrate.
- composition according to claim 2 in which said member is a mixture of lithium nitrate and calcium nitrate.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Primary Cells (AREA)
Description
United States Patent 3,497,404 CAST FLARE COMPOSITION OF MAGNESIUM DISPERSED IN A MATRIX, MOSTLY SODIUM NITRATE Ralph H. Hiltz, Pittsburgh, Pa., assignor to Mine Safety Appliances Company, Pittsburgh, Pa., a corporation of Pennsylvania N0 Drawing. Filed Jan. 28, 1969, Ser. No. 794,779 Int. Cl. C06d 1/10 US. Cl. 149-17 4 Claims ABSTRACT OF THE DISCLOSURE Cast high-intensity illuminating flares contain a coarse magnesium powder dispersed in a matrix of a solidified salt melt containing principally sodium nitrate with a minor amount of another alkali metal or alkaline earth metal nitrate or nitrite.
This invention relates to pyrotechnic illuminating flares and more particularly to cast flares that emit white light.
Maximum intensity in illuminating flares having magnesium fuel and nitrate oxidizers is achieved using sodium nitrate. This is due to the natural intensity of the sodium spectral line and the sensitivity of the human eye to light of that wavelength. Such flares have been made by compressing miXtures of magnesium, sodium nitrate and organic binders. Tepper, United States Patent 3,370,537, disclosed cast pyrotechnics in which a metal fuel is dispersed in a mixture of oxidizing salts melting below about 250 C. Casting, in addition to being a simpler process than pressing, provides pyrotechnics of high uniformity that burn evenly with constant light output. Since no organic binders are used, the cast pyrotechnics do not show the impact sensitivity of conventional compressed pyrotechnics. Sodium nitrate melts at 308 C. and starts to dissociate at temperatures only slightly above its melting point. Accordingly, molten sodium nitrate or salt mixtures containing a high proportion of sodium nitrate have not heretofore been used in cast pyrotechnics.
This invention is based on my discovery that coarse magnesium powder can be mixed with a salt melt consisting of sodium nitrate and a minor amount of alkali metal or alkaline earth metal nitrite or nitrate, at a temperature up to about 310 C. to form a castable slurry. The slurry when cast into an appropriate casing and allowed to freeze forms a flare of magnesium dispersed in a solidified salt matrix that burns brilliantly and evenly to provide to a steady, high intensity illumination. The burning rate of the flare compositions can be greatly decreased, without decreasing total light output, by addition of minor amounts of lithium fluoride.
The salt melt is principally anhydrous sodium nitrate and contains from about 5-25 of added salt that may be anhydrous alkaline earth metal nitrite, alkali metal nitrite, alkaline earth metal nitrate, alkali metal nitrate other than sodium, suitably calcium nitrite, sodium nitrite, potassium nitrite, calcium nitrate, lithium nitrate or potassium nitrate or mixtures thereof. These mixtures are fully melted at temperatures of about 275-290 C. and can be further heated to about 310 C. without decomposition. It is desirable to heat the mixtures Well above the melting point to increase the fluidity of the melt and facil- ICC itate mixing with the magnesium powder. I have also found that these salt mixtures Wet magnesium and hence are specially easily mixed to form a uniform slurry.
The proportion of metal to oxidizer salt is between about 1 and 1.85 parts metal to each part salt, preferably between 1.25 and 1.50 to 1.
The flares are in use normally ignited at one end and burn lengthwise, the flare life depending on the rate at which the burning front proceeds lengthwise of the flare, designated as linear burning rate. The linear burning rate can be substantially adjusted, suitably from 4-10 seconds per inch, by adjusting the proportion of magnesium to salt, the magnesium particle size and the amount of added salt. Burning rate decreases with increasing amounts of magnesium up to about 60% by weight magnesium and then increases with further increase in magnesium content. Increasing the amount of added salt decreases burning rate with some decrease in brightness. It is presently preferred to use mixtures of calcium nitrate and lithium nitrate as added salts since their use provides increased flare life with a minimum decrease in brightness.
The addition of lithium fluoride to the flare compositions, as a component of the matrix, greatly reduces the burning rate without any decrease in total light output but with, of course, a corresponding decrease in brightness. Any amount of lithium fluoride up to about 10% by weight of the matrix is effective, the higher the amount used the slower the burning rate. This use of lithium fluoride is desirable to meet requirements in which brightness can be sacrificed for longer flare life. For example, flares of this invention that have a life of 30-45 seconds have a life of about seconds when modified by the addition of about 10% lithium fluoride to the matrix.
The flares of this invention are highly resistant to accidental ignition or explosion by ballistic impact. For example, they are non-igniting when struck by .30-caliber ammunition, either ball or armor piercing, fired at a distance of 30 feet or greater. Conventionl compressed flares can be ignited by ISO-caliber ball ammunition at a distance of about 200 feet.
The following examples invention:
Example l.Fifteen parts calcium nitrate and 85 parts of sodium nitrate are heated in a metal furnace pot. The mixture is held at 150 C. for a short time to allow evaporation of the water of hydration of the calcium nitrate. The temperature is then raised to about 300 C., the mixture being completely melted at about 280 C. parts of magnesium powder, passing a 30 mesh (Tyler) and retained on a 70 mesh screen, was added to the molten salt and stirred until a homogeneous slurry was obtained. The slurry was poured into an aluminum casing and allowed to freeze. The resultant solid flare, weighing 350 grams, was 7 inches long and burned for 35 seconds giving 250,000 candles of light.
Example 2.The procedure of Example 1 was repeated using 155 parts of 30-70 mesh magnesium, and a salt mixture of 20 parts NaNO and 80 parts NaNO The resultant cast flare, 7 inches long and weighing 350 grams, burned for 25 seconds providing 375,000 candles of light.
Examples 3.-The procedure of Example 1 was repeated using parts magnesium, 15 parts LiNO 10 parts Ca(NO and 75 parts NaNO The resultant cast flare, 7 inches long and weighing 325 grams, burned for 45 seconds giving 280,000 candles of light.
are illustrative of the I claim:
1. A flare composition consisting essentially of about 1 to 1.85 parts of magnesium particles larger than about 70-mesh dispersed in 1 part of matrix consisting essentially of solidified molten-salt mixture containing sodium nitrate, between about 0 and 10% lithium fluoride, and between about 5 and 25% a member selected from the group consisting of calcium nitrate, lithium nitrate, potassium nitrate, calcium nitrite, sodium nitrite, potassium nitrite and mixtures thereof.
2. A composition according to claim 1 having between about 1.25 and 1.50 parts magnesium per 1 part of matrix.
3. A composition according to claim 2 in Which said member is calcium nitrate.
4. A composition according to claim 2 in which said member is a mixture of lithium nitrate and calcium nitrate.
References Cited UNITED STATES PATENTS 534,557 2/1895 Gerhard 149-20 3,325,316 6/1967 MacDonald 149 17 3,370,537 2/1968 Tepper 149 17 X 3,421,954 1/1969 F'HlCOlleI 149-17 10 CARL D. QUARFORTH, Primary Examiner STEPHEN J. LECHERT, JR., Assistant Examiner US. Cl. X.R.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US79477969A | 1969-01-28 | 1969-01-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US3497404A true US3497404A (en) | 1970-02-24 |
Family
ID=25163653
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US794779*A Expired - Lifetime US3497404A (en) | 1969-01-28 | 1969-01-28 | Cast flare composition of magnesium dispersed in a matrix,mostly sodium nitrate |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US3497404A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3726731A (en) * | 1971-02-24 | 1973-04-10 | Lcp Scient Inc | Composite materials producing sustained colored flames |
| US3986907A (en) * | 1975-03-07 | 1976-10-19 | Thiokol Corporation | Illuminating flare composition containing tetranitrocarbazole |
| US4184901A (en) * | 1978-08-21 | 1980-01-22 | The United States Of America As Represented By The Secretary Of The Navy | Simultaneous yellow smoke and yellow flame composition containing bismuth subnitrate |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US534557A (en) * | 1895-02-19 | Pyrotechnic compound | ||
| US3325316A (en) * | 1965-03-29 | 1967-06-13 | Gilmour C Macdonald | Pyrotechnic compositions of metal matrix with oxide dispersed therein |
| US3370537A (en) * | 1965-07-22 | 1968-02-27 | Mine Safety Appliances Co | Castable pyrotechnic composition comprising metal nitrates or chlorates and finely divided metal |
| US3421954A (en) * | 1966-10-28 | 1969-01-14 | Canadian Ind | Melt explosive composition having a matrix of an inorganic oxygen supplying salt |
-
1969
- 1969-01-28 US US794779*A patent/US3497404A/en not_active Expired - Lifetime
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US534557A (en) * | 1895-02-19 | Pyrotechnic compound | ||
| US3325316A (en) * | 1965-03-29 | 1967-06-13 | Gilmour C Macdonald | Pyrotechnic compositions of metal matrix with oxide dispersed therein |
| US3370537A (en) * | 1965-07-22 | 1968-02-27 | Mine Safety Appliances Co | Castable pyrotechnic composition comprising metal nitrates or chlorates and finely divided metal |
| US3421954A (en) * | 1966-10-28 | 1969-01-14 | Canadian Ind | Melt explosive composition having a matrix of an inorganic oxygen supplying salt |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3726731A (en) * | 1971-02-24 | 1973-04-10 | Lcp Scient Inc | Composite materials producing sustained colored flames |
| US3986907A (en) * | 1975-03-07 | 1976-10-19 | Thiokol Corporation | Illuminating flare composition containing tetranitrocarbazole |
| US4184901A (en) * | 1978-08-21 | 1980-01-22 | The United States Of America As Represented By The Secretary Of The Navy | Simultaneous yellow smoke and yellow flame composition containing bismuth subnitrate |
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