Sintered material, tool including sintered material, and sintered material production method

Patent metadata

Field	Value
Publication number	US-10501377-B2
Application number	US-201816014241-A
Country	US
Kind code	B2
Filing date	Jun 21, 2018
Priority date	Aug 29, 2014
Publication date	Dec 10, 2019
Grant date	Dec 10, 2019

Abstract

To provide a sintered material having excellent oxidation resistance, as well as excellent abrasion resistance and chipping resistance. A sintered material containing a first compound formed of Ti, Al, Si, O, and N is provided.

First claim

The invention claimed is:

1. A method for producing a sintered material, comprising the steps of:
preparing first grains containing elements Ti, Al, and Si;
treating said first grains to make second grains formed of elements Ti, Al, Si, O, and N; and
sintering said second grains to make a sintered material containing a first compound formed of Ti, Al, Si, O, and N, wherein
the step of making said second grains includes a step of heating said first grains, and a step of rapidly cooling said first grains after heating.

2. The method for producing a sintered material according to claim 1 , further comprising a step of:
mixing said second grains with third grains before the step of making said sintered material, wherein
said third grains are grains formed of at least one selected from the group consisting of a fifth compound, a sixth compound, a seventh compound and a second metal,
said fifth compound is cubic boron nitride,
said sixth compound is a compound of at least one element selected from Al and Si, and at least one element selected from the group consisting of B, C, N, and O,
said seventh compound is a compound of at least one element selected from the group consisting of elements in Group 4, elements in Group 5, and elements in Group 6 of the periodic table, and at least one element selected from the group consisting of B, C, N, and O, and
said second metal is a metal formed of at least one selected from the group consisting of Ti, V, Cr, Mn, Co, Ni, Cu, Al, Sn, Si, Zr, Nb, Mo, Ag, Hf, Ta, W, and Pb.

3. The method for producing a sintered material according to claim 2 , wherein said mixing step is executed in such a manner that a content of said third grains in mixed grains of said second grains and said third grains is less than or equal to 90% by volume.

Assignees

• Sumitomo Electric Industries

Inventors

• Moroguchi Hironari
• Harada Takashi
• Kukino Satoru

Classifications

• C04B2235/3418

  Silicon oxide, silicic acids or oxide forming salts thereof, e.g. silica sol, fused silica, silica fume, cristobalite, quartz or flint · CPC title

• C04B35/58007

  based on refractory metal nitrides · CPC title

• C04B2235/3865

  Aluminium nitrides · CPC title

• C04B2235/3839

  Refractory metal carbides · CPC title

• C04B35/5626

  based on tungsten carbides · CPC title