Sintered alloy and method for the hardening treatment thereof
AssigneeSuzuki Motor Corporation
InventorToshio Yamauchi
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Abstract
The present invention provides sintered alloys in which only a sliding part can be hardened without altering the dimensional accuracy of the article, and a method for the hardening treatment thereof. Specifically, the present invention relates to a method for the hardening treatment of a sintered alloy which comprises the steps of compressing an iron-based sinterable material to form a compact 2; placing a small-sized member 1 containing aluminum or an aluminum alloy that melts at a temperature lower than the sintering temperature of the compact, on a surface of the compact; and sintering the compact 2 so as to form an intermetallic compound 20 of iron and aluminum in a surface layer 7 of the compact 2, and to a sintered alloy having been treated according to this method.
Claims3
A method for the hardening treatment of a sintered alloy, which comprises the steps of:
- compressing an iron-based sinterable material to form a compact;
- providing a surface of said compact with a coating material containing aluminum or an aluminum alloy that melts at a temperature lower than the sintering temperature of said compact;
- and
- sintering said compact provided with the coating material, so as to form an intermetallic compound of iron and aluminum in a surface layer of said compact.
Dependencies are inferred from the claim text.