Abrasive compacts

B - Operations – Transporting – 24 – D

Patent

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Details

B24D 3/00 (2006.01) C09K 3/14 (2006.01) C22C 26/00 (2006.01) C22C 29/16 (2006.01)

Patent

CA 2658353

Abrasive compacts, in particular ultrahard polycrystalline abrasive compacts, are made under high pressure/high temperature conditions and are characterized in that they include a coarser grained fraction of ultrahard particles distributed non-percolatively throughout a finer grained fraction of ultrahard particles, which may be regarded as a finer grained ultrahard particle matrix, in such a way that the individual coarser grains are largely isolated from one another. It therefore performs as a matrix of highly wear resistant finer grained material interspersed with larger grains, offering a structure that has advantageous wear and impact performance over the behaviours of the two components individually or otherwise combined.

L'invention concerne des compacts abrasifs, en particulier des compacts abrasifs polycristallins ultra-durs, produits dans des conditions de haute pression/haute température et caractérisés en ce qu'ils comprennent une fraction grenue plus grossière de particules ultra-dures réparties de manière non percolée dans une fraction grenue plus fine de particules ultra-dures, qui peut être considérée comme une matrice particulaire ultra-dure grenue plus fine, de telle sorte que les grains plus grossiers individuels sont en grande partie isolés les uns des autres. Ledit compact se comporte comme une matrice de matériau grenu plus fin, hautement résistant à l'usure, intercalé avec des grains plus importants, offrant une structure qui présente une résistance à l'usure et aux chocs avantageuse par rapport aux comportements des deux composants combinés individuellement ou différemment.

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