JPS6483662A - Coated sintered hard alloy - Google Patents

Coated sintered hard alloy

Info

Publication number
JPS6483662A
JPS6483662A JP24176287A JP24176287A JPS6483662A JP S6483662 A JPS6483662 A JP S6483662A JP 24176287 A JP24176287 A JP 24176287A JP 24176287 A JP24176287 A JP 24176287A JP S6483662 A JPS6483662 A JP S6483662A
Authority
JP
Japan
Prior art keywords
al2o3
hard alloy
film
sintered hard
coated
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
JP24176287A
Other languages
Japanese (ja)
Other versions
JP2668221B2 (en
Inventor
Masahide Akiyama
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.)
Kyocera Corp
Original Assignee
Kyocera Corp
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 Kyocera Corp filed Critical Kyocera Corp
Priority to JP62241762A priority Critical patent/JP2668221B2/en
Publication of JPS6483662A publication Critical patent/JPS6483662A/en
Application granted granted Critical
Publication of JP2668221B2 publication Critical patent/JP2668221B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Cutting Tools, Boring Holders, And Turrets (AREA)
  • Chemical Vapour Deposition (AREA)

Abstract

PURPOSE:To obtain a coated sintered hard alloy having excellent resistance to chipping and wear by coating a specific film consisting of alpha and kappa type Al2O3 on the surface of a sintered hard alloy base material consisting of a hard phase which is the carbide or carbonitride of metals and a bond phase which is iron group metals. CONSTITUTION:The sintered hard alloy base material is constituted of about 90-96wt.% hard phase consisting of at least one kind of the carbide and carbonitrides of group 4a, 5a, 6a elements of the periodic table and about 4-10% bond phase consisting of at least one kind of the iron group elements. At least the Al2O3 film is coated on the surface of this material. The Al2O3 film is constituted of the mixed crystals composed of the alpha type Al2O3 and the kappa type Al2O3 and is so formed that the diffraction intensity ratio of the (113) peak of the alpha type Al2O3 and the (202) peak of the kappa type Al2O3 by an X-ray diffraction curve has the relation 0.2<=Ikappa(202)/Ialpha(113)<=5.0. The thickness of the above-mentioned Al2O3 film is preferably 4-12mum and the Al2O3 crystal grain size thereof is preferably <=5.0mum. the toughness of the Al2O3 film is thereby enhanced and the coated sintered hard alloy which forms long-life tools by decreasing the abrasion loss and chipping is obtd.
JP62241762A 1987-09-26 1987-09-26 Coated cemented carbide Expired - Fee Related JP2668221B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62241762A JP2668221B2 (en) 1987-09-26 1987-09-26 Coated cemented carbide

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62241762A JP2668221B2 (en) 1987-09-26 1987-09-26 Coated cemented carbide

Publications (2)

Publication Number Publication Date
JPS6483662A true JPS6483662A (en) 1989-03-29
JP2668221B2 JP2668221B2 (en) 1997-10-27

Family

ID=17079150

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62241762A Expired - Fee Related JP2668221B2 (en) 1987-09-26 1987-09-26 Coated cemented carbide

Country Status (1)

Country Link
JP (1) JP2668221B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5587233A (en) * 1992-03-27 1996-12-24 Widia Gmbh Composite body and its use
WO1999052662A1 (en) * 1998-04-14 1999-10-21 Sumitomo Electric Industries, Ltd. Coated cemented carbide cutting tool

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63195268A (en) * 1987-02-10 1988-08-12 Mitsubishi Metal Corp Cutting tool made of surface coated sintered hard alloy

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63195268A (en) * 1987-02-10 1988-08-12 Mitsubishi Metal Corp Cutting tool made of surface coated sintered hard alloy

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5587233A (en) * 1992-03-27 1996-12-24 Widia Gmbh Composite body and its use
WO1999052662A1 (en) * 1998-04-14 1999-10-21 Sumitomo Electric Industries, Ltd. Coated cemented carbide cutting tool
US6293739B1 (en) 1998-04-14 2001-09-25 Sumitomo Electric Industries, Ltd. Coated cemented carbide cutting tool

Also Published As

Publication number Publication date
JP2668221B2 (en) 1997-10-27

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Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees