公开(公告)号：FR2649125B1

公开(公告)日：1992-08-21

申请号：FR9008410

申请日：1990-07-03

Applicant: UNITED TECHNOLOGIES CORP

Inventor： ROUTSIS KOSTAS ,  PARKOS JOSEPH JOHN JR ,  FRELING MELVIN

IPC: F01D5/28 ,  C25D5/14 ,  C25D15/02 ,  F01D5/20 ,  C25D9/04 ,  C25D7/00 ,  F02C7/28

Abstract: An abrasive layer is formed on the tip portion of a turbine engine blade made of Ti alloy by (a) electroplating a 12-18 microns thick first Ni layer onto the blade tip; (b) electroplating a max. 1 micron thick second Ni layer; (c) electroplating a third Ni layer, immersing the tip in a slurry of electrically non-conductive particles in an electroplating soln. present on a membrane which is permeable to electric current and the soln., and then contg. electroplating of the third Ni layer; (d) electroplating a fourth Ni layer such that the combined thickness of the third and fourth layers corresponds to 50-95% of the mean dimension of the embedded particles, and (e) heat treating the blade to cause diffusion between the first Ni layer and the blade tip.

公开(公告)号：FR2649125A1

公开(公告)日：1991-01-04

申请号：FR9008410

申请日：1990-07-03

Applicant: UNITED TECHNOLOGIES CORP

Inventor： ROUTSIS KOSTAS ,  PARKOS JOSEPH JOHN JR ,  FRELING MELVIN

IPC: F01D5/28 ,  C25D5/14 ,  C25D15/02 ,  F01D5/20

Abstract: An abrasive layer is formed on the tip portion of a turbine engine blade made of Ti alloy by (a) electroplating a 12-18 microns thick first Ni layer onto the blade tip; (b) electroplating a max. 1 micron thick second Ni layer; (c) electroplating a third Ni layer, immersing the tip in a slurry of electrically non-conductive particles in an electroplating soln. present on a membrane which is permeable to electric current and the soln., and then contg. electroplating of the third Ni layer; (d) electroplating a fourth Ni layer such that the combined thickness of the third and fourth layers corresponds to 50-95% of the mean dimension of the embedded particles, and (e) heat treating the blade to cause diffusion between the first Ni layer and the blade tip.