# US 2017/0253531 A1 · Sintered material, tool including sintered material, and sintered material production method

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- Number: US 2017/0253531 A1
- Document ID: US20170253531A1
- Status: Published application
- Kind: A1
- Application number: 15/506,079
- Filed: 2015-08-21
- Published: 2017-09-07
- Earliest claimed: 2014-08-29
- Assignees: Sumitomo Electric Industries, Ltd.
- Applicants: Sumitomo Electric Industries, Ltd.
- Inventors: Hironari MOROGUCHI; Takashi HARADA; Satoru KUKINO
- Web page: https://patentgrep.com/patent/US20170253531A1

## CPC

- C04B 35/58014: {based on titanium nitrides, e.g. TiAlON}
- B23B 27/14: Cutting tools of which the bits or tips {or cutting inserts} are of special material
- B23B 27/148: {Composition of the cutting inserts}
- C01B 21/064: with boron
- C01B 21/0821: {Oxynitrides of metals, boron or silicon}
- C01B 21/0826: {Silicon aluminium oxynitrides, i.e. sialons}
- C04B 35/10: based on aluminium oxide
- C04B 35/117: Composites
- C04B 35/5603: {with a well-defined oxygen content, e.g. oxycarbides}
- C04B 35/5607: {based on refractory metal carbides}
- C04B 35/5611: {based on titanium carbides}
- C04B 35/5622: {based on zirconium or hafnium carbides}
- C04B 35/5626: {based on tungsten carbides}
- C04B 35/58: based on borides, nitrides, {i.e. nitrides, oxynitrides, carbonitrides or oxycarbonitrides} or silicides {(containing free binder metal C22C29/00)}
- C04B 35/58007: {based on refractory metal nitrides}
- C04B 35/58028: {based on zirconium or hafnium nitrides}
- C04B 35/581: based on aluminium nitride
- C04B 35/5831: based on cubic boron nitrides {or Wurtzitic boron nitrides, including crystal structure transformation of powder}
- C04B 35/597: based on silicon oxynitride, {e.g. SIALONS}
- C04B 35/62665: {Flame, plasma or melting treatment}
- C04B 35/6267: {Pyrolysis, carbonisation or auto-combustion reactions}
- C04B 35/62675: {characterised by the treatment temperature}
- C04B 35/6268: {characterised by the applied pressure or type of atmosphere, e.g. in vacuum, hydrogen or a specific oxygen pressure}
- C04B 35/645: Pressure sintering
- C04B 2235/3217: Aluminum oxide or oxide forming salts thereof, e.g. bauxite, alpha-alumina
- C04B 2235/3244: Zirconium oxides, zirconates, hafnium oxides, hafnates, or oxide-forming salts thereof
- C04B 2235/3418: Silicon oxide, silicic acids or oxide forming salts thereof, e.g. silica sol, fused silica, silica fume, cristobalite, quartz or flint
- C04B 2235/3839: Refractory metal carbides
- C04B 2235/3843: Titanium carbides
- C04B 2235/3847: Tungsten carbides
- C04B 2235/386: Boron nitrides
- C04B 2235/3865: Aluminium nitrides
- C04B 2235/3869: Aluminium oxynitrides, e.g. AlON, sialon
- C04B 2235/3873: Silicon nitrides, e.g. silicon carbonitride, silicon oxynitride
- C04B 2235/3886: Refractory metal nitrides, e.g. vanadium nitride, tungsten nitride
- C04B 2235/402: Aluminium
- C04B 2235/404: Refractory metals
- C04B 2235/428: Silicon
- C04B 2235/5436: micrometer sized, i.e. from 1 to 100 micron
- C04B 2235/80: Phases present in the sintered or melt-cast ceramic products other than the main phase
- C04B 2235/96: Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
- C04B: LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE {(roofing granules E04D7/005)}; CERAMICS (devitrified glass-ceramics C03C10/00); REFRACTORIES; TREATMENT OF NATURAL STONE
- B23B: TURNING; BORING (arrangements for copying or controlling B23Q)
- C01B: NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; {METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C}

## 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.

## Claims

### Claim 1

A sintered material comprising a first compound formed of Ti, Al, Si, O, and N.

### Claim 2 (depends on 1)

The sintered material according to claim 1, wherein
said first compound contains Ti(1-a-b)AlaSibOxNy, and
a, b, x and y in said Ti(1-a-b)AlaSibOxNy respectively satisfy 0.01≦a≦0.70, 0.01≦b≦0.55, 0.06≦a+b≦0.88, 0.005≦x≦0.6, 0.4≦y≦0.995, and 0.5<x+y≦1.

### Claim 3 (depends on 1)

The sintered material according to claim 1, wherein a content of the first compound in said sintered material is greater than or equal to 10% by volume and less than or equal to 100% by volume.

### Claim 4 (depends on 1)

The sintered material according to claim 1, wherein
said sintered material further comprises at least one selected from the group consisting of a second compound, a third compound, a fourth compound and a first metal,
said second compound is cubic boron nitride,
said third 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 fourth 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 first 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.

### Claim 5 (depends on 1)

A tool comprising the sintered material according to claim 1.

### Claim 6

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.

### Claim 7 (depends on 6)

The method for producing a sintered material according to claim 6, 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.

### Claim 8 (depends on 7)

The method for producing a sintered material according to claim 7, 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.