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DE516490C - Alloys made of platinum metals, which are used in particular for the manufacture of gold nib tips - Google Patents

Alloys made of platinum metals, which are used in particular for the manufacture of gold nib tips

Info

Publication number
DE516490C
DE516490C DE1930516490D DE516490DD DE516490C DE 516490 C DE516490 C DE 516490C DE 1930516490 D DE1930516490 D DE 1930516490D DE 516490D D DE516490D D DE 516490DD DE 516490 C DE516490 C DE 516490C
Authority
DE
Germany
Prior art keywords
platinum metals
manufacture
alloys made
alloys
gold
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
Application number
DE1930516490D
Other languages
German (de)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
WC Heraus GmbH and Co KG
Original Assignee
WC Heraus GmbH and Co KG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by WC Heraus GmbH and Co KG filed Critical WC Heraus GmbH and Co KG
Application granted granted Critical
Publication of DE516490C publication Critical patent/DE516490C/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C5/00Alloys based on noble metals
    • C22C5/04Alloys based on a platinum group metal

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Pens And Brushes (AREA)
  • Contacts (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Description

Legierungen aus Platinmetallen, welche insbesondere zur Herstellung von Goldfederspitzen dienen In dem Patent 437 173 sind der Erfinderin Legierungen geschützt worden, die vorzugsweise zur Herstellung von Federspitzenlegierungen, die neben einer großen Härte eine ausreichende Säurebeständigkeit haben, dienen sollen. Diese Legierungen sind dadurch gekennzeichnet, daß sie einen Gehalt von 40 bis 6o oo Ruthen haben, 35 bis 5o % Osmium und 5 bis 15 % Platin. Es hat sich nun herausgestellt, daß der obengenannte Osmiumgehalt zweckmäßig weiter reduziert wird, da das Osmium neben seinem hohen Schmelzpunkt über :ein sehr großes spezifisches Gewicht verfügt und die Legierungen infolge dieser Eigenschaften des Osmiums sich nur schwer in brauchbarer Form herstellen lassen. Es kommt hinzu, daß die außerordentlich große Oxydationsfähigkeit des Osmiums leicht die Aufnahme von oxydischen Verunreinigungen in der Legierung hervorruft, die zu einem Brüchigwerden führen.Alloys made of platinum metals, which are used in particular for the production of gold nibs. In the patent 437 173 , the inventor has protected alloys which are preferably used for the production of nib-tip alloys which, in addition to high hardness, have sufficient acid resistance. These alloys are characterized in that they have a content of 40 to 6o oo ruthenium, osmium and 35 to 5o% 5-1 5% platinum. It has now been found that the above-mentioned osmium content is expediently further reduced because, in addition to its high melting point, the osmium has a very high specific weight and the alloys are difficult to produce in a usable form due to these properties of the osmium. In addition, the extremely high oxidizing capacity of osmium easily causes the uptake of oxidic impurities in the alloy, which lead to brittleness.

Es wird daher vorgeschlagen, an Stelle der aufgeführten Zusammensetzung Legierungen zu verwenden, die einen Ruthengehalt über 6o % haben, am besten 6o bis 8o %, Iö bis 3 5 % Osmium und 5 bis a 5 % anderer Platinmetalle. Neben dem in dem Patent 437 173 genannten Platin kommen auch die anderen Platinmetalle, insbesondere Palladium oder Rhodium, in Betracht, da sie der Legierung eine gute Herstellbarkeit verleihen. Die Erhöhung des Ruthengehalts hat neben dem genannten schmelztechnischen Vorteil auch insofern Bedeutung, als das Ruthen infolge seines geringen spezifischen Gewichts die Preiswürdigkeit der Legierung steigert, da für gleichen Inhalt bei geringerem spezifischen Gewicht das Metallgewicht fällt.It is therefore proposed, instead of the composition listed, to use alloys which have a ruthen content of more than 60%, preferably 60 to 80%, 10 to 35% osmium and 5 to a 5% of other platinum metals. In addition to the platinum mentioned in Patent 437 173 , the other platinum metals, in particular palladium or rhodium, can also be considered, since they make the alloy easy to manufacture. The increase in the ruthenium content is not only important in terms of melting technology, but also insofar as the ruthenium increases the cost-effectiveness of the alloy due to its low specific weight, since the metal weight falls for the same content with a lower specific weight.

Claims (1)

PATENTANSPRUCH: Legierungen aus Platinmetallen, welche insbesondere zur Herstellung von Goldfederspitzen dienen, dadurch gekennzeichnet, daß sie einen Gehalt von 6o bis 8o q%o Ruthen haben, I o bis 3 5 % Osmium und 5 bis 25 % anderer Platinmetalle, insbesondere Palladium oder Rhodium. PATENT CLAIM: Alloys made of platinum metals, which are used in particular for the production of gold nib tips, characterized in that they have a content of 6o to 8o q% o ruthen, 10 to 35% osmium and 5 to 25 % of other platinum metals, in particular palladium or rhodium .
DE1930516490D 1925-09-17 1930-05-20 Alloys made of platinum metals, which are used in particular for the manufacture of gold nib tips Expired DE516490C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEH103517D DE437173C (en) 1925-09-17 1925-09-17 Alloys of platinum metals, which are particularly suitable for nibs
DE516490T 1930-05-20

Publications (1)

Publication Number Publication Date
DE516490C true DE516490C (en) 1931-01-23

Family

ID=62529449

Family Applications (2)

Application Number Title Priority Date Filing Date
DEH103517D Expired DE437173C (en) 1925-09-17 1925-09-17 Alloys of platinum metals, which are particularly suitable for nibs
DE1930516490D Expired DE516490C (en) 1925-09-17 1930-05-20 Alloys made of platinum metals, which are used in particular for the manufacture of gold nib tips

Family Applications Before (1)

Application Number Title Priority Date Filing Date
DEH103517D Expired DE437173C (en) 1925-09-17 1925-09-17 Alloys of platinum metals, which are particularly suitable for nibs

Country Status (1)

Country Link
DE (2) DE437173C (en)

Also Published As

Publication number Publication date
DE437173C (en) 1926-11-11

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