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Novel palladium-based alloys containing tin and their use in the glass industry
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Inventors: Guerlet, Jean-Paul; Hilger, Jean-Pierre;
Assignee: Comptoir Lyon-Alemand-Louyot, Societe Anonyme (FR)
Primary Examiner: Dean; R.
Assistant Examiner: Shumaker; David W.
Attorney, Agent or Firm: Brumbaugh, Graves, Donohue & Raymond
The invention relates to a novel palladium-based alloy. This palladium-based alloy comprises tin in an amount, preferably of 5 to 20% by weight, which is sufficient to impart an acceptable resistance to corrosion by molten glass, preferably being essentially equivalent to that of platinum-rhodium 10% alloys. An alloy of this type can be used in the glass industry for making components which come into contact with molten glass, which preferably essentially contains no oxides less stable than tin oxide, such as lead oxide, because it has an excellent resistance to corrosion by molten glass and is much less expensive than the platinum-rhodium 10% alloy normally used. Moreover, by the addition of at least one element selected from platinum (0-50% by weight), rhodium (0-20% by weight), iridium (0-20% by weight) and ruthenium 0-20% by weight), the mechanical strength at high temperature, especially the creep strength, is significantly improved. |
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DETAILED DESCRIPTION What is claimed is: 1.
A spinneret for contacting molten glass free from oxides less stable than tin oxide, in a glass processing installation, a part of said spinneret that contacts said molten glass being fabricated from an alloy selected from the group consisting of binary alloys of palladium and tin and alloys consisting essentially of palladium, tin and at least one metal selected from the group consisting of platinum, rhodium, iridium and ruthenium, wherein the amount of tin present in the selected alloy is from about 2.
0% to 20.
0% by weight and the amount of palladium is not less than about 40.
0% by weight, wherein the part of said spinneret has a resistance to corrosion by said molten glass substantially the same as that of platinum-rhodium 10% alloys.
2.
The spinneret according to claim 1 fabricated from an alloy containing 5.
0% to 18.
0% by weight tin.
3.
The spinneret according to claim 1 fabricated from an alloy containing 10.
0% to 15.
0% by weight tin.
4.
The spinneret according to claim 1 fabricated from an alloy containing up to 50.
0% by weight platinum.
5.
The spinneret according to claim 1 fabricated from an alloy containing up to 20.
0% by weight of a metal selected from the group consisting of rhodium, iridium, and ruthenium.
6.
The spinneret component according to claim 1 fabricated from an alloy containing, by weight, 40.
0% palladium, 10.
0% tin, 45.
0% platinum and 5.
0% rhodium.
7.
The spinneret according to claim 1 fabricated from an alloy containing, by weight, 90.
0% palladium and 10.
0% tin.
8.
The spinneret according to claim 1 fabricated from an alloy containing, by weight, 80.
0% palladium, 10.
0% tin and 10.
0% ruthenium.
9.
An alloy having a resistance to corrosion by molten glass which is free from oxides less stable than tin oxide, comprising, by weight, 45.
0% platinum, 40.
0% palladium, 10.
0% tin and 5.
0% rhodium.
10.
An alloy having a resistance to corrosion by molten glass which is free from oxides less stable than tin oxide, comprising, by weight, 80
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Semiconductor manufacture 
