The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 31, 2012
Filed:
Oct. 31, 2007
Barbara Mariëlle DE Leeuw-morrison, Johannesburg, ZA;
Cornelis Roelof Jonker, Pretoria, ZA;
Roger William Nigel Nilen, Dowerglen, ZA;
Barbara Mariëlle De Leeuw-Morrison, Johannesburg, ZA;
Cornelis Roelof Jonker, Pretoria, ZA;
Roger William Nigel Nilen, Dowerglen, ZA;
Other;
Abstract
The invention is for a polycrystalline diamond abrasive compact comprising a layer of polycrystalline diamond bonded to a cemented tungsten carbide substrate. The polycrystalline diamond defines a plurality of interstices and a binder phase is distributed in the interstices to form binder pools. The polycrystalline diamond is characterized by the presence of a separate tungsten particulate phase in the binder phase, in excess of 0.05 volume % but not greater than 2 volume %, expressed as a % of the total polycrystalline diamond, and the binder phase further containing a low eta-phase, Co3W3C, content as determined by conventional XRD analysis, an XRD peak height of the <511> eta-phase (Co3W3C) peak which is less than 0.06 when expressed as a fraction of the peak height of the <200> cubic cobalt peak. The invention extends to a composition and to a method for manufacturing the polycrystalline diamond abrasive compact.