EP0237622A1 - Beschichtete Keramik-Wendeschneidplatte - Google Patents

Beschichtete Keramik-Wendeschneidplatte Download PDF

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Publication number
EP0237622A1
EP0237622A1 EP86114784A EP86114784A EP0237622A1 EP 0237622 A1 EP0237622 A1 EP 0237622A1 EP 86114784 A EP86114784 A EP 86114784A EP 86114784 A EP86114784 A EP 86114784A EP 0237622 A1 EP0237622 A1 EP 0237622A1
Authority
EP
European Patent Office
Prior art keywords
titanium
cutting tool
layer
base body
aluminum oxide
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.)
Withdrawn
Application number
EP86114784A
Other languages
German (de)
English (en)
French (fr)
Inventor
Ulf Dr. Dipl.-Min. Dworak
Kilian Dr. Dipl.-Ing. Friederich
Werner Dipl.-Chem. Hänni
Hans Erich Dr. Sc.Nat.Eth Hintermann
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.)
Feldmuehle AG
Original Assignee
Feldmuehle AG
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 Feldmuehle AG filed Critical Feldmuehle AG
Publication of EP0237622A1 publication Critical patent/EP0237622A1/de
Withdrawn legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C30/00—Coating with metallic material characterised only by the composition of the metallic material, i.e. not characterised by the coating process
    • C23C30/005—Coating with metallic material characterised only by the composition of the metallic material, i.e. not characterised by the coating process on hard metal substrates

Definitions

  • the present invention is based on a cutting tool for machining according to the preamble of the main claim.
  • Coated cutting inserts are described in DE-C-24 43 160.
  • the insert base bodies described there consist of ceramic oxides or wear-resistant ceramic oxides which are mixed with one or more hard carbides and / or nitrides and / or binder metal.
  • the known insert has a coating of ceramic oxides, preferably of the oxides of: Al, Zr, Si, Ca, Mg, Ti and / or Hf.
  • an intermediate layer made of a or more carbides and / or nitrides of Ti, Zr, Hf, V, Nb, Ta, Cr, MO, W, Si and / or B can be arranged.
  • DE-C-31 44 192 provides a method for the PVD coating of cemented carbides or cermets Carbides, nitrides or oxides of metals from Group IVa, Va and VIa of the PSE and / or Al2O3 and Zr2O2 prior to atomization cleaning with hydrogen or other gas mixture to improve the adhesion of the coating on the base body.
  • EP-A- 85 240 provides intermediate layers made of titanium oxide, on which wear layers made of titanium nitride, titanium carbide or titanium carbonitride are applied by the CVD process.
  • DE-A-28 25 009 describes hard metal bodies with an aluminum oxide layer, an intermediate layer made of wear-resistant carbide, nitride, carbonitride and / or boride, etc., being applied before the aluminum oxide layer is applied. made of titanium carbide, titanium nitride and titanium carbonitride.
  • DE-B-25 25 185 also relates to wear-resistant molded parts with basic bodies made of hard metal and, before the wear-resistant layers made of aluminum oxide and / or zirconium oxide are applied, sees the application of inner partial layers made of one or more borides, in particular diborides of the elements titanium, zirconium and hafnium , Vanadium, niobium, tantalum, chromium, molybdenum and tungsten.
  • borides in particular diborides of the elements titanium, zirconium and hafnium , Vanadium, niobium, tantalum, chromium, molybdenum and tungsten.
  • EP-OS 45 291 has already proposed during the deposition of a wear layer consisting essentially of aluminum oxide the substrate made of hard metal or ceramic before adding a controlled amount of sulfur, selenium and / or tellurium.
  • This document provides intermediate layers of carbides, nitrides, carbonitrides and / or borides of one or more of the elements titanium, zirconium, hafnium, vanadium, niobium, tantalum, chromium, molybdenum, tungsten, silicon and / or beryllium.
  • the present invention therefore sees its task in the development of a cutting tool Improved temperature resistance, whereby the wear layer on the substrate has sufficient adhesive strength.
  • the cutting tool should also be able to be produced cost-effectively and reproducibly on an industrial scale without using complex procedural measures using conventional raw materials.
  • the invention provides the characterizing features of claim 1 in a cutting tool according to the preamble of the main claim.
  • the base body consists essentially of: aluminum oxide, zirconium oxide, a mixture of aluminum oxide with up to 20% by volume of zirconium oxide, with additional amounts of 2 to 15% by volume being preferred; Furthermore, from a silicon nitride containing the usual sintering aids, which is either sintered or hot-pressed without pressure, and from sintered or hot-pressed silicon nitride, to which hard materials, preferably titanium carbide, titanium nitride, titanium boride, niobium boride, niobium carbide and silicon carbide are added, as well as from metal sintered silicon and none Silicon carbide, also made of aluminum oxide with an addition of 1 to 40 vol.% Titanium carbide.
  • the base bodies are ground on all sides before the intermediate layer of silicon dioxide is applied to form the standardized geometries.
  • Intermediate layers and wear layers each with a thickness of 0.1 to 5 ⁇ m, have proven to be well suited. Due to their less pronounced glass character, intermediate layers with a thickness of ⁇ 1 ⁇ m have proven to be particularly suitable. Intermediate layers of this thickness are therefore considered to be particularly preferred because the high brittleness of silicon dioxide is hardly noticeable from a negative point of view with these small layer thicknesses.
  • the use of the CVD or PVD method, in particular the CVD method has proven to be particularly suitable.
  • the application of the silicon dioxide layer can take place, for example, in accordance with the method described in US Pat. No. 4,099,990 for the application of SiO 2 layers to the inner surface of reactor tubes.
  • a base body made of, for example, Al2O3, but without the preoxidation described in the aforementioned US-A-4099990 is coated directly with SiO2 by the action of an atmosphere of a nitrogen carrier gas containing 0.5% H2O, which acts as a Si carrier Contains 0.5% TEOS (tetraethyl orthosilicate) and deposited a 50 ⁇ m thick SiO2 layer at 50 mbar and 780 ° C for a treatment period of 1 h. Another treatment follows in a water vapor atmosphere of 1 bar at 1000 ° C. for 30 minutes.
  • the deposition of the wear layer is carried out according to the known CVD process for the application of TiC-Al2O3, TiC, TiN, Ti (C, N).
  • a base body made of a mixture of aluminum oxide and 12 vol.% Zirconium oxide was provided with a layer of silicon dioxide with a thickness of 0.5 ⁇ m applied by the CVD method and then in the same reactor with a layer of titanium carbonitride with a thickness of 1.5 ⁇ m coated.
  • the adhesive strength of the titanium carbonitride layer was 23 N.
  • the adhesive strength was measured using the REVETEST method, in which the substrate is moved under a diamond tip subjected to increasing loads.
  • the same titanium carbonitride layer was applied to the base body made of aluminum oxide with 12 vol.% Zirconium oxide, without the application of an intermediate silicon dioxide layer.
  • the adhesive strength determined was only 4 N.
  • base bodies were made of: aluminum oxide with the addition of magnesium oxide and silicon dioxide as sintering aids, Aluminum oxide with an addition of 20 vol.% Titanium carbide Silicon nitride with additions of magnesium oxide and yttrium oxide as well as calcium oxide as a sintering aid Silicon nitride, which contains 20% by volume of titanium carbide in addition to the aforementioned sintering aids, Silicon nitride, which contains 20% by volume of titanium nitride in addition to the aforementioned sintering aids, Silicon nitride, which in addition to the aforementioned sintering aids each contains 10% by volume of titanium diboride and titanium carbide, Silicon carbide with an intermediate layer made of: SiO2 and wear layers made of: aluminum oxide, titanium carbide, titanium nitride and titanium carbonitride.
  • the adhesive strength of the wear layer on the substrate or the intermediate layer was in each case more than 20 N.
  • the accompanying figure shows a schematic representation - in cross section - of a section of a cutting tool.
  • the cutting plate (1) shown in the figure consists of a base body (2) made of aluminum oxide, on which an intermediate layer (4) made of silicon dioxide is arranged, which is covered with the wear layer (3) made of titanium carbonitride.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Cutting Tools, Boring Holders, And Turrets (AREA)
  • Chemical Vapour Deposition (AREA)
  • Physical Vapour Deposition (AREA)
EP86114784A 1986-03-15 1986-10-24 Beschichtete Keramik-Wendeschneidplatte Withdrawn EP0237622A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3608734 1986-03-15
DE19863608734 DE3608734C1 (de) 1986-03-15 1986-03-15 Beschichtete Keramik-Wendeschneidplatte

Publications (1)

Publication Number Publication Date
EP0237622A1 true EP0237622A1 (de) 1987-09-23

Family

ID=6296466

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86114784A Withdrawn EP0237622A1 (de) 1986-03-15 1986-10-24 Beschichtete Keramik-Wendeschneidplatte

Country Status (3)

Country Link
EP (1) EP0237622A1 (ja)
JP (1) JPS62224676A (ja)
DE (1) DE3608734C1 (ja)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5264297A (en) * 1990-03-09 1993-11-23 Kennametal Inc. Physical vapor deposition of titanium nitride on a nonconductive substrate
US5595814A (en) * 1994-06-01 1997-01-21 Ykk Corporation Wear resistant film

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10109523A1 (de) * 2001-02-28 2002-09-05 Ceram Tec Ag Innovative Cerami Hartstoffbeschichtetes Bauteil mit Zwischenschicht zur Verbesserung der Haftfestigkeit der Beschichtung
DE102008026358A1 (de) * 2008-05-31 2009-12-03 Walter Ag Werkzeug mit Metalloxidbeschichtung

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2243754A1 (ja) * 1973-09-17 1975-04-11 Sandvik Ab
JPS57145088A (en) * 1981-02-27 1982-09-07 Hitachi Metals Ltd Clad ceramic tool
JPS5874585A (ja) * 1981-10-26 1983-05-06 三菱マテリアル株式会社 高速切削用表面被覆窒化けい素基焼結部材
JPS60127905A (ja) * 1983-12-09 1985-07-08 Ngk Spark Plug Co Ltd 高靭性セラミック工具

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2243754A1 (ja) * 1973-09-17 1975-04-11 Sandvik Ab
JPS57145088A (en) * 1981-02-27 1982-09-07 Hitachi Metals Ltd Clad ceramic tool
JPS5874585A (ja) * 1981-10-26 1983-05-06 三菱マテリアル株式会社 高速切削用表面被覆窒化けい素基焼結部材
JPS60127905A (ja) * 1983-12-09 1985-07-08 Ngk Spark Plug Co Ltd 高靭性セラミック工具

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
CHEMICAL ABSTRACTS, Band 104, Nr. 6, 10. Februar 1986, Seite 310, Zusammenfassung Nr. 38721q, Columbus, Ohio, US; & JP-A-60 127 905 (NGK SPARK PLUG CO. LTD) 08-07-1985 *
CHEMICAL ABSTRACTS, Band 98, Nr. 3, 21. Februar 1983, Seite 287, Zusammenfassung Nr. 58865a, Columbus, Ohio, US; & JP-A-57 145 088 (HITACHI METALS LTD) 07-09-1982 *
CHEMICAL ABSTRACTS, Band 99, Nr. 14, 3. Oktober 1983, Seite 267, Zusammenfassung Nr. 109672r, Columbus, Ohio, US; & JP-A-58 74 585 (MITSUBISHI METAL CORP.) 06-05-1983 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5264297A (en) * 1990-03-09 1993-11-23 Kennametal Inc. Physical vapor deposition of titanium nitride on a nonconductive substrate
US5595814A (en) * 1994-06-01 1997-01-21 Ykk Corporation Wear resistant film

Also Published As

Publication number Publication date
DE3608734C1 (de) 1987-01-02
JPS62224676A (ja) 1987-10-02

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Inventor name: HAENNI, WERNER, DIPL.-CHEM.

Inventor name: FRIEDERICH, KILIAN, DR. DIPL.-ING.

Inventor name: HINTERMANN, HANS ERICH, DR. SC.NAT.ETH

Inventor name: DWORAK, ULF, DR. DIPL.-MIN.