公开(公告)号：ZA8709684B

公开(公告)日：1988-09-28

申请号：ZA8709684

申请日：1987-12-28

Applicant: UNITED TECHNOLOGIES CORP

Inventor： SCHAEFER ROBERT P ,  ROBERT P SCHAEFER ,  RUTZ DAVID A ,  DAVID A RUTZ ,  LEE EDWARD ,  EDWARD LEE ,  JOHNSON EDWARD L ,  EDWARD L JOHNSON

IPC: B24D3/00 ,  B22F3/10 ,  B24D3/06 ,  C22C1/10 ,  C22C32/00 ,  C23C24/10 ,  F01D5/20 ,  F01D11/00 ,  F16J15/10 ,  C04B ,  C01B ,  B28B ,  F02K

CPC classification number: C22C32/00 ,  B22F1/0003 ,  B22F3/1035 ,  C22C1/1036 ,  F01D5/20

Abstract: An abrasive material (22) comprised of a metal matrix (26) and evenly distributed ceramic particulates (24), is made by mixing powder metal with the ceramic powder and heating to a temperature sufficient to melt most, but not all of the powder. In this way the ceramic does not float to the top of the material, yet a dense material is obtained. A nickel superalloy matrix will have at least some remnants of the original powder metal structure, typically some equiaxed grains, along with a fine dendritic structure, thereby imparting desirable high temperature strength when the abrasive material is applied to the tips of blades of gas turbine engines. Preferred matrices have a relatively wide liquidus-solidus temperature range, contain a melting point depressant, and a reactive metal to promote adhesion to the ceramic.

公开(公告)号：ZA879684B

公开(公告)日：1988-09-28

申请号：ZA879684

申请日：1987-12-28

Applicant: UNITED TECHNOLOGIES CORP

Inventor： SCHAEFER ROBERT P ,  ROBERT P SCHAEFER ,  RUTZ DAVID A ,  DAVID A RUTZ ,  LEE EDWARD ,  EDWARD LEE ,  JOHNSON EDWARD L ,  EDWARD L JOHNSON

IPC: B24D3/00 ,  B22F3/10 ,  B24D3/06 ,  C22C1/10 ,  C22C32/00 ,  C23C24/10 ,  F01D5/20 ,  F01D11/00 ,  F16J15/10 ,  C04B ,  C01B ,  B28B ,  F02K

Abstract: An abrasive material (22) comprised of a metal matrix (26) and evenly distributed ceramic particulates (24), is made by mixing powder metal with the ceramic powder and heating to a temperature sufficient to melt most, but not all of the powder. In this way the ceramic does not float to the top of the material, yet a dense material is obtained. A nickel superalloy matrix will have at least some remnants of the original powder metal structure, typically some equiaxed grains, along with a fine dendritic structure, thereby imparting desirable high temperature strength when the abrasive material is applied to the tips of blades of gas turbine engines. Preferred matrices have a relatively wide liquidus-solidus temperature range, contain a melting point depressant, and a reactive metal to promote adhesion to the ceramic.

公开(公告)号：ZA879685B

公开(公告)日：1988-09-28

申请号：ZA879685

申请日：1987-12-28

Applicant: UNITED TECHNOLOGIES CORP

Inventor： SCHAEFER ROBERT P ,  ROBERT P SCHAEFER ,  RUTZ DAVID A ,  DAVID A RUTZ ,  LEE EDWARD ,  EDWARD LEE ,  JOHNSON EDWARD L ,  EDWARD L JOHNSON

IPC: B22F20060101 ,  C04B20060101 ,  C22C20060101 ,  F02K20060101 ,  B22F ,  C04B ,  C22C ,  F02K

公开(公告)号：ZA8709685B

公开(公告)日：1988-09-28

申请号：ZA8709685

申请日：1987-12-28

Applicant: UNITED TECHNOLOGIES CORP

Inventor： SCHAEFER ROBERT P ,  ROBERT P SCHAEFER ,  RUTZ DAVID A ,  DAVID A RUTZ ,  LEE EDWARD ,  EDWARD LEE ,  JOHNSON EDWARD L ,  EDWARD L JOHNSON

IPC: B22F20060101 ,  C04B20060101 ,  C22C20060101 ,  F02K20060101 ,  B22F ,  C04B ,  C22C ,  F02K