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1. WO2007144733 - ULTRAHARD COMPOSITES

Publication Number WO/2007/144733
Publication Date 21.12.2007
International Application No. PCT/IB2007/001551
International Filing Date 08.06.2007
IPC
C22C 29/16 2006.01
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
29Alloys based on carbides, oxides, borides, nitrides or silicides, e.g. cermets, or other metal compounds, e. g. oxynitrides, sulfides
16based on nitrides
C22C 29/12 2006.01
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
29Alloys based on carbides, oxides, borides, nitrides or silicides, e.g. cermets, or other metal compounds, e. g. oxynitrides, sulfides
12based on oxides
B24D 3/14 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
24GRINDING; POLISHING
DTOOLS FOR GRINDING, BUFFING OR SHARPENING
3Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents
02the constituent being used as bonding agent
04and being essentially inorganic
14ceramic, i.e. vitrified bondings
CPC
B82Y 30/00
BPERFORMING OPERATIONS; TRANSPORTING
82NANOTECHNOLOGY
YSPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
30Nanotechnology for materials or surface science, e.g. nanocomposites
C04B 2235/3217
CCHEMISTRY; METALLURGY
04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE
2235Aspects relating to ceramic starting mixtures or sintered ceramic products
02Composition of constituents of the starting material or of secondary phases of the final product
30Constituents and secondary phases not being of a fibrous nature
32Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
3217Aluminum oxide or oxide forming salts thereof, e.g. bauxite, alpha-alumina
C04B 2235/3225
CCHEMISTRY; METALLURGY
04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE
2235Aspects relating to ceramic starting mixtures or sintered ceramic products
02Composition of constituents of the starting material or of secondary phases of the final product
30Constituents and secondary phases not being of a fibrous nature
32Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
3224Rare earth oxide or oxide forming salts thereof, e.g. scandium oxide
3225Yttrium oxide or oxide-forming salts thereof
C04B 2235/3232
CCHEMISTRY; METALLURGY
04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE
2235Aspects relating to ceramic starting mixtures or sintered ceramic products
02Composition of constituents of the starting material or of secondary phases of the final product
30Constituents and secondary phases not being of a fibrous nature
32Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
3231Refractory metal oxides, their mixed metal oxides, or oxide-forming salts thereof
3232Titanium oxides or titanates, e.g. rutile or anatase
C04B 2235/3241
CCHEMISTRY; METALLURGY
04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE
2235Aspects relating to ceramic starting mixtures or sintered ceramic products
02Composition of constituents of the starting material or of secondary phases of the final product
30Constituents and secondary phases not being of a fibrous nature
32Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
3231Refractory metal oxides, their mixed metal oxides, or oxide-forming salts thereof
3241Chromium oxides, chromates, or oxide-forming salts thereof
C04B 2235/3246
CCHEMISTRY; METALLURGY
04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE
2235Aspects relating to ceramic starting mixtures or sintered ceramic products
02Composition of constituents of the starting material or of secondary phases of the final product
30Constituents and secondary phases not being of a fibrous nature
32Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
3231Refractory metal oxides, their mixed metal oxides, or oxide-forming salts thereof
3244Zirconium oxides, zirconates, hafnium oxides, hafnates, or oxide-forming salts thereof
3246Stabilised zirconias, e.g. YSZ or cerium stabilised zirconia
Applicants
  • ELEMENT SIX (PRODUCTION) (PTY) LTD [ZA]/[ZA] (AllExceptUS)
  • CAN, Antionette [ZA]/[ZA] (UsOnly)
  • DAVIES, Geoffrey John [GB]/[ZA] (UsOnly)
  • MOCHUBELE, Anna Emela [ZA]/[ZA] (UsOnly)
  • MYBURGH, Johannes Lodewikus [ZA]/[ZA] (UsOnly)
Inventors
  • CAN, Antionette
  • DAVIES, Geoffrey John
  • MOCHUBELE, Anna Emela
  • MYBURGH, Johannes Lodewikus
Agents
  • SPOOR & FISHER
Priority Data
2006/0476509.06.2006ZA
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) ULTRAHARD COMPOSITES
(FR) COMPOSITES ULTRA-DURS
Abstract
(EN)
The present invention concerns an ultrahard composite material comprising ultrahard particles dispersed in a nano-grain sized matrix material, wherein the average grain size of the matrix material, or at least one component of the matrix material, is within 30nm of the Hall-Petch departure grain size for the matrix material or at least one component thereof. The ultrahard particles in the composite are cubic boron nitride and / or diamond, and the matrix materials are of a controlled and chosen phase and nano-grain size. Ultrahard composites with cubic boron nitride and diamond in nano- matrices of titanium nitride, zirconia, alumina, silica and chromium nitride are provided.
(FR)
La présente invention concerne un matériau composite ultra-dur comprenant des particules ultra-dures dispersées dans une matrice sous forme de grains nanométriques, la taille moyenne des grains de la matrice, ou d'au moins un composant de la matrice, étant de plus ou moins 30 nm de la taille de grain de dissociation de Hall-Petch pour la matrice ou au moins un de ses composants. Les particules ultra-dures dans le composite sont du nitrure de bore cubique et/ou du diamant et la matrice est une phase contrôlée et choisie de grains de taille nanométrique. L'invention concerne des composites ultra-durs comprenant du nitrure de bore cubique et du diamant dans des nanomatrices de nitrure de titane, de zircone, d'alumine, de silice et de nitrure de chrome.
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