Polycrystalline diamond abrasive element and method of its...

Details Polycrystalline diamond abrasive element and method of its... Polycrystalline diamond abrasive element and method of its...

B - Operations, Transporting

24

D

B24D 3/06 (2006.01) B24D 3/10 (2006.01)

Patent

CA 2618658

Polycrystalline diamond abrasive elements made by incorporating low levels of at least one metal boride, the metal being selected from magnesium, calcium, aluminium, strontium, yttrium, zirconium, hafnium and chromium, and the rare earth metals, particularly cerium and lanthanum. The benefits of adding boron to polycrystalline diamond abrasive compacts are exploited together with simultaneously minimising or eliminating the detrimental effects of the presence of oxygen.

L'invention concerne des éléments abrasifs en diamant polycristallin que l'on obtient en incorporant de faibles niveaux d'au moins un borure métallique, le métal étant choisi parmi le magnésium, le calcium, l'aluminium, le strontium, l'yttrium, le zirconium, le hafnium et le chrome, et les métaux des terres rares, notamment le cérium et le lanthane. On exploite les avantages que présente l'adjonction du bore aux matériaux compacts abrasifs en diamant polycristallin, tout en minimisant ou en éliminant les effets nuisibles de la présence de l'oxygène.

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