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CA2219638A1 - Hard and tough sintered body for a cutting tool - Google Patents

Hard and tough sintered body for a cutting tool

Info

Publication number
CA2219638A1
CA2219638A1 CA002219638A CA2219638A CA2219638A1 CA 2219638 A1 CA2219638 A1 CA 2219638A1 CA 002219638 A CA002219638 A CA 002219638A CA 2219638 A CA2219638 A CA 2219638A CA 2219638 A1 CA2219638 A1 CA 2219638A1
Authority
CA
Canada
Prior art keywords
cutting tool
sintered body
boron nitride
binder
pressure phase
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002219638A
Other languages
French (fr)
Other versions
CA2219638C (en
Inventor
Tomohiro Fukaya
Tetsuo Nakai
Junichi Shiraishi
Satoru Kukino
Shinya Uesaka
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sumitomo Electric Industries Ltd
Original Assignee
Sumitomo Electric Industries Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sumitomo Electric Industries Ltd filed Critical Sumitomo Electric Industries Ltd
Publication of CA2219638A1 publication Critical patent/CA2219638A1/en
Application granted granted Critical
Publication of CA2219638C publication Critical patent/CA2219638C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
    • C04B35/58—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on borides, nitrides, i.e. nitrides, oxynitrides, carbonitrides or oxycarbonitrides or silicides
    • C04B35/583—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on borides, nitrides, i.e. nitrides, oxynitrides, carbonitrides or oxycarbonitrides or silicides based on boron nitride
    • C04B35/5831—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on borides, nitrides, i.e. nitrides, oxynitrides, carbonitrides or oxycarbonitrides or silicides based on boron nitride based on cubic boron nitrides or Wurtzitic boron nitrides, including crystal structure transformation of powder
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    • C04B35/62605—Treating the starting powders individually or as mixtures
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    • C04B35/628—Coating the powders or the macroscopic reinforcing agents
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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Structural Engineering (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Ceramic Products (AREA)
  • Cutting Tools, Boring Holders, And Turrets (AREA)

Abstract

A sintered body for a cutting tool consists of high-pressure phase boron nitride, a residual binder phase, plus unavoidable impurities, and contains high-pressure phase boron nitride powder which has been previously coated with a binder before sintering. The coating binder consists of an element belonging to group 4a, 5a or 6a of the periodic table, and has an average thickness of 5 to 300 nm. Binder powder other than the coating binder consists of an element belonging to group 4a, 5a or 6a of the periodic table, and the contact ratio of high-pressure phase boron nitride is at least 20% and less than 50%. The product is a high-pressure phase boron nitride-based hard and tough sintered body for a cutting tool which is improved in wear resistance and chipping resistance.
CA 2219638 1996-10-31 1997-10-28 Hard and tough sintered body for a cutting tool Expired - Fee Related CA2219638C (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP8-290359 1996-10-31
JP29035996 1996-10-31
JP9271311A JPH10182242A (en) 1996-10-31 1997-10-03 High hardness and high toughness sintered body
JP9-271311 1997-10-03

Publications (2)

Publication Number Publication Date
CA2219638A1 true CA2219638A1 (en) 1998-04-30
CA2219638C CA2219638C (en) 2002-07-30

Family

ID=26549643

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2219638 Expired - Fee Related CA2219638C (en) 1996-10-31 1997-10-28 Hard and tough sintered body for a cutting tool

Country Status (2)

Country Link
JP (1) JPH10182242A (en)
CA (1) CA2219638C (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002144131A (en) * 2000-11-09 2002-05-21 Gn Tool Kk Ball end mill
JP2002144132A (en) * 2001-01-26 2002-05-21 Gn Tool Kk Ball end mill
JP4160898B2 (en) 2003-12-25 2008-10-08 住友電工ハードメタル株式会社 High strength and high thermal conductivity cubic boron nitride sintered body
EP1905751B1 (en) * 2005-07-15 2018-04-18 Sumitomo Electric Hardmetal Corp. Composite sintered body
JP5298372B2 (en) * 2006-06-12 2013-09-25 住友電工ハードメタル株式会社 Composite sintered body
CA2676513C (en) 2007-01-30 2015-04-07 Sumitomo Electric Hardmetal Corp. Composite sintered body
JP5988430B2 (en) 2012-10-26 2016-09-07 住友電工ハードメタル株式会社 Cubic boron nitride sintered body and method for producing the same
JP6095162B2 (en) * 2013-03-29 2017-03-15 住友電工ハードメタル株式会社 Cubic boron nitride sintered body

Also Published As

Publication number Publication date
JPH10182242A (en) 1998-07-07
CA2219638C (en) 2002-07-30

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