US1863645A - Chemically resistant silver alloy - Google Patents

Chemically resistant silver alloy Download PDF

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Publication number
US1863645A
US1863645A US416293A US41629329A US1863645A US 1863645 A US1863645 A US 1863645A US 416293 A US416293 A US 416293A US 41629329 A US41629329 A US 41629329A US 1863645 A US1863645 A US 1863645A
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United States
Prior art keywords
silver
chemically resistant
silver alloy
per cent
resistant silver
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Expired - Lifetime
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US416293A
Inventor
Assmann Peter
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IG Farbenindustrie AG
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IG Farbenindustrie AG
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    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C5/00—Alloys based on noble metals
    • C22C5/06—Alloys based on silver

Definitions

  • the present invention relates to a chemically resistant silver alloy.
  • silver alloys consisting of at least 78 per cent of silver, from 0.3 to 20 per cent of manganese and from 0.3 w to 20 per cent of at least one metal selected from the roup of metals belonging to the second to fth group of the periodic system and capable of forming solid solutions rich in silver are considerably more resistant to corrosion than pure silver or the silver alloys hitherto marketed.
  • Metals of the second to fifth group of the periodic system of the stated kind are for example aluminium, magnesium, zinc, tin, thallium, antimony, a0 arsenic, bismuth and silicon.
  • the said al- 1oys are particularly resistant against hydrochloric acid in the dilute as well as in the concentrated state.
  • the silver alloys containing from 2 to 20 per cent of manganese and from 0.3 to 6 per cent of aluminium.
  • the said allo s are not necessarily produced from absoluteFy pure silver but the silver may contain such amounts of impurities as are usual- 1y present in silver.
  • the alloys Due to their resistivity against corrosion the alloys are most excellently adapted as materials for the production of receptacles and apparatus coming into contact with 3 chemical reagents, especially hydrochloric acid, and of silverware for general use. It is, however, in most cases not necessary to make the apparatus or receptacles throughout of the said silver alloys, but it is sufii- 4 cient to coat the surfaces exposed to attack with the said alloys.
  • What I claim is A silver alloy consisting of at least 78 per cent of silver, from 2 to 20 per cent of 5 manganese and from 0.3 to 6 per cent of aluminium.

Description

Patented June 21, 193i v UNITED STATES PATENT OFFICE PETER ASSMANN, OF LUDW'IGSH AFEN-ON-THE-BHINE, GERMANY, ASSIGNOB TO I. G.
FABBENINDUSTRIE AKTIENGESELLSCHAFT, OF IRANKFOBT-ON-THE-MAIN, GER- MANY CHEMICALLY RESISTANT SILVER ALLOY 30 Drawing. Application filed December 24, 1929, Serial No. 416,298, and in Germany June 19, 1828.
The present invention relates to a chemically resistant silver alloy.
The present application is a continuation in part of the application for an im rove- 6 ment in Chemically resistant alloys Ser.
No. 199,403, filed June 16, 1927.
I have found that silver alloys consisting of at least 78 per cent of silver, from 0.3 to 20 per cent of manganese and from 0.3 w to 20 per cent of at least one metal selected from the roup of metals belonging to the second to fth group of the periodic system and capable of forming solid solutions rich in silver are considerably more resistant to corrosion than pure silver or the silver alloys hitherto marketed. Metals of the second to fifth group of the periodic system of the stated kind are for example aluminium, magnesium, zinc, tin, thallium, antimony, a0 arsenic, bismuth and silicon. The said al- 1oys are particularly resistant against hydrochloric acid in the dilute as well as in the concentrated state. Particularly valuable in this respect are the silver alloys containing from 2 to 20 per cent of manganese and from 0.3 to 6 per cent of aluminium. The said allo s are not necessarily produced from absoluteFy pure silver but the silver may contain such amounts of impurities as are usual- 1y present in silver.
Due to their resistivity against corrosion the alloys are most excellently adapted as materials for the production of receptacles and apparatus coming into contact with 3 chemical reagents, especially hydrochloric acid, and of silverware for general use. It is, however, in most cases not necessary to make the apparatus or receptacles throughout of the said silver alloys, but it is sufii- 4 cient to coat the surfaces exposed to attack with the said alloys.
What I claim is A silver alloy consisting of at least 78 per cent of silver, from 2 to 20 per cent of 5 manganese and from 0.3 to 6 per cent of aluminium.
In testimony whereof I have hereunto set my hand.
l0 PETER ASSMANN.
US416293A 1926-06-19 1929-12-24 Chemically resistant silver alloy Expired - Lifetime US1863645A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1863645X 1926-06-19

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US1863645A true US1863645A (en) 1932-06-21

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2719085A (en) * 1950-12-22 1955-09-27 Degussa Silver-silicon alloys
US2904451A (en) * 1957-12-05 1959-09-15 Gen Electric Vaporization coating process and alloy therefor
US3159481A (en) * 1959-12-24 1964-12-01 Gen Dynamics Corp Brazing alloy composition and method for making same
US3220808A (en) * 1961-05-17 1965-11-30 Bristol Siddeley Engines Ltd Alloys
US9194024B1 (en) 2010-05-17 2015-11-24 Stuller, Inc. Jewelry article of white precious metals and methods for making the same
US9217190B2 (en) 2011-09-01 2015-12-22 Stuller, Inc. Sterling silver alloy and articles made from same

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2719085A (en) * 1950-12-22 1955-09-27 Degussa Silver-silicon alloys
US2904451A (en) * 1957-12-05 1959-09-15 Gen Electric Vaporization coating process and alloy therefor
US3159481A (en) * 1959-12-24 1964-12-01 Gen Dynamics Corp Brazing alloy composition and method for making same
US3220808A (en) * 1961-05-17 1965-11-30 Bristol Siddeley Engines Ltd Alloys
US9194024B1 (en) 2010-05-17 2015-11-24 Stuller, Inc. Jewelry article of white precious metals and methods for making the same
US9217190B2 (en) 2011-09-01 2015-12-22 Stuller, Inc. Sterling silver alloy and articles made from same
US10697044B1 (en) 2011-09-01 2020-06-30 Stuller, Inc. Sterling silver alloy and articles made from the same

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