High-temperature and wear-resistant antifriction material having low thermal expansions
AssigneeJenaer Glaswerk Schott & Gen.
InventorWalter Jahn
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Abstract
A compact, self-supporting solid article of manufacture consisting essentially high temperature and wear-resistant antifriction material of low thermal expansion in the form of a heterogeneous sintered article of a matrix of glass or glass ceramic of low thermal expansion and distributed within the matrix small particles of at least one temperature and wear-resistant antifriction oxide selected from the group consisting of nickel oxide, cobalt oxide, ferric oxide, bismuth oxide and chromic oxide.
Claims13
A compact, self-supporting solid article of manufacture consisting essentially of high temperature and wear-resistant antifriction material of low thermal expansion in the form of a heterogeneous sintered article of a matrix of glass or glass ceramic of low thermal expansion and distributed substantially uniformly within the matrix small particles comprising at least one temperature and wear-resistant antifriction oxide selected from the group consisting of nickel oxide, cobalt oxide, ferric oxide, bismuth oxide and chromic oxide, said matrix having a thermal expansion of from -10 to +50.10.sup..sup.-7 per degree Celsius and comprising the following composition in percent by weight
- SiO.sub.2 40 - 80 Al.sub.2 O.sub.3 0 - 40 B.sub.2 O.sub.3 0 - 70 alkali metal oxides 2 - 20.
Dependencies are inferred from the claim text.