公开(公告)号：JP2000192173A

公开(公告)日：2000-07-11

申请号：JP28907699

申请日：1999-10-12

Applicant: UNITED TECHNOLOGIES CORP

Inventor： DALZELL WILLIAM J JR ,  DAVIS CHARLES G

IPC: F02C7/00 ,  C09K3/14 ,  C22C9/00 ,  C22C9/06 ,  C22C32/00

Abstract: PROBLEM TO BE SOLVED: To provide a wearing material suitable for the knife edge seal of a gas turbine engine. SOLUTION: Copper powder and boron nitride powder are jointly subjected to plasma thermal spraying to obtain this wearing material composed of about 35 to 50 vol.% copper alloy matrix, about 25 to 55 vol.% BN, and the balance pores and the oxide of the matrix. The copper alloy matrix is a solid solution composed of about 65 to 95 wt.% copper, and the balance nickel. In the meanwhile in which this wearing material is interfered with a knife edge in the presence of lubricating oil in a high temp. state, sparks are not generated, and also, the lubricating oil does not deteriorate. Moreover, the wearing material has suitable abrasive characteristics, by which a good seal is formed.