公开(公告)号：DE69126958T2

公开(公告)日：1998-01-15

申请号：DE69126958

申请日：1991-01-08

Applicant: UNITED TECHNOLOGIES CORP

Inventor： FORNWALT DONALD EDWARD ,  ROUTSIS KOSTAS ,  LOMASNEY GARY M

IPC: C25D5/12 ,  C23F1/08 ,  C23F1/26 ,  C25D3/12 ,  C25D3/56 ,  C25D5/28 ,  C25D5/38 ,  C25F1/08 ,  C25F3/08

Abstract: This invention relates to an improved method for electroplating a layer of nickel onto titanium base alloy substrates. It is particularly useful in electroplating a layer of nickel onto titanium alloys which contain refractory metal elements, such as the alloy Ti-8A1-1V-1Mo. The method includes the steps of etching the surface of the substrate with a solution containing hydrofluoric acid and hydrochloric acid, followed by electroplating the etched surface in a nickel sulfamate solution.

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：GB2194553B

公开(公告)日：1991-03-06

申请号：GB8718302

申请日：1987-08-03

Applicant: UNITED TECHNOLOGIES CORP

Inventor： LESHANE JEFFREY SCOTT ,  ROUTSIS KOSTAS ,  WATSON CHARLES RAY

IPC: B32B15/01 ,  C23C28/02 ,  C23C30/00 ,  C25D7/00 ,  F01D5/28 ,  F03B3/12

Abstract: A composite article includes a compressively stressed plating which provides increased static strength and fatigue life. In particular, a fan exit guide vane (1), made of a graphite fiber reinforced composite material and including a conductive plating (7), achieves a 380% increase in static load capability over an unplated composite vane and a low cycle fatigue life of over 1 million cycles through the application of a compressively stressed nickel plating (8) which produces a residual compressive stress state of between -5,000 and -15,000 psi.

公开(公告)号：GB2194553A

公开(公告)日：1988-03-09

申请号：GB8718302

申请日：1987-08-03

Applicant: UNITED TECHNOLOGIES CORP

Inventor： LESHANE JEFFREY SCOTT ,  ROUTSIS KOSTAS ,  WATSON CHARLES RAY

IPC: B32B15/01 ,  C23C28/02 ,  C23C30/00 ,  C25D7/00 ,  F01D5/28 ,  F03B3/12 ,  C25D3/02 ,  F04D29/40

Abstract: A composite article includes a compressively stressed plating which provides increased static strength and fatigue life. In particular, a fan exit guide vane (1), made of a graphite fiber reinforced composite material and including a conductive plating (7), achieves a 380% increase in static load capability over an unplated composite vane and a low cycle fatigue life of over 1 million cycles through the application of a compressively stressed nickel plating (8) which produces a residual compressive stress state of between -5,000 and -15,000 psi.

公开(公告)号：FR2602179A1

公开(公告)日：1988-02-05

申请号：FR8710816

申请日：1987-07-30

Applicant: UNITED TECHNOLOGIES CORP

Inventor： LESHANE JEFFREY SCOTT ,  ROUTSIS KOSTAS ,  WATSON CHARLES RAY

IPC: B32B15/01 ,  C23C28/02 ,  C23C30/00 ,  F01D5/28 ,  F03B3/12 ,  C25D7/00 ,  B32B27/06 ,  B32B27/20 ,  B32B15/08 ,  B29C67/14 ,  B29D9/00 ,  F01D9/02 ,  F02C7/00

Abstract: A composite article includes a compressively stressed plating which provides increased static strength and fatigue life. In particular, a fan exit guide vane (1), made of a graphite fiber reinforced composite material and including a conductive plating (7), achieves a 380% increase in static load capability over an unplated composite vane and a low cycle fatigue life of over 1 million cycles through the application of a compressively stressed nickel plating (8) which produces a residual compressive stress state of between -5,000 and -15,000 psi.

公开(公告)号：DE4021044A1

公开(公告)日：1991-01-17

申请号：DE4021044

申请日：1990-07-02

Applicant: UNITED TECHNOLOGIES CORP

Inventor： ROUTSIS KOSTAS ,  PARKOS JUN JOSEPH JOHN ,  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.

公开(公告)号：DE3725686A1

公开(公告)日：1988-02-18

申请号：DE3725686

申请日：1987-08-03

Applicant: UNITED TECHNOLOGIES CORP

Inventor： LESHANE JEFFREY SCOTT ,  ROUTSIS KOSTAS ,  WATSON CHARLES RAY

IPC: C25D7/00 ,  B32B15/01 ,  C23C28/02 ,  C23C30/00 ,  F01D5/28 ,  F03B3/12 ,  B32B15/04 ,  B32B1/00 ,  B32B27/28 ,  B32B27/04

Abstract: A composite article includes a compressively stressed plating which provides increased static strength and fatigue life. In particular, a fan exit guide vane (1), made of a graphite fiber reinforced composite material and including a conductive plating (7), achieves a 380% increase in static load capability over an unplated composite vane and a low cycle fatigue life of over 1 million cycles through the application of a compressively stressed nickel plating (8) which produces a residual compressive stress state of between -5,000 and -15,000 psi.

公开(公告)号：NO873227L

公开(公告)日：1988-02-05

申请号：NO873227

申请日：1987-08-03

Applicant: UNITED TECHNOLOGIES CORP

Inventor： LESHANE JEFFREY SCOTT ,  ROUTSIS KOSTAS ,  WATSON CHARLES RAY

IPC: B32B15/01 ,  C25D7/00 ,  C23C28/02 ,  C23C30/00 ,  F01D5/28 ,  F03B3/12 ,  C25D

Abstract: A composite article includes a compressively stressed plating which provides increased static strength and fatigue life. In particular, a fan exit guide vane (1), made of a graphite fiber reinforced composite material and including a conductive plating (7), achieves a 380% increase in static load capability over an unplated composite vane and a low cycle fatigue life of over 1 million cycles through the application of a compressively stressed nickel plating (8) which produces a residual compressive stress state of between -5,000 and -15,000 psi.

公开(公告)号：IT8721566D0

公开(公告)日：1987-08-03

申请号：IT2156687

申请日：1987-08-03

Applicant: UNITED TECHNOLOGIES CORP

Inventor： LESHANE JEFFREY SCOTTO ,  ROUTSIS KOSTAS ,  WATSON CHARLES RAY

IPC: C25D7/00 ,  B32B15/01 ,  C23C28/02 ,  C23C30/00 ,  F01D5/28 ,  F03B3/12

Abstract: A composite article includes a compressively stressed plating which provides increased static strength and fatigue life. In particular, a fan exit guide vane (1), made of a graphite fiber reinforced composite material and including a conductive plating (7), achieves a 380% increase in static load capability over an unplated composite vane and a low cycle fatigue life of over 1 million cycles through the application of a compressively stressed nickel plating (8) which produces a residual compressive stress state of between -5,000 and -15,000 psi.