Invention Application
WO2010103418A1 A SUPERHEAD ELEMENT, A TOOL COMPRISING SAME AND METHODS FOR MAKING SUCH SUPERHARD ELEMENT 审中-公开
超级元件,包含它的工具和制造这样的超级元件的方法

A SUPERHEAD ELEMENT, A TOOL COMPRISING SAME AND METHODS FOR MAKING SUCH SUPERHARD ELEMENT
Abstract:
The invention relates to a superhard element (10) comprising a polycrystalline superhard structure (20) joined at an interface to a hard-metal body (30) comprising metal carbide grains bonded together by a metal binder,- the polycrystalline superhard structure comprising a superhard material; the hard-metal body comprising a surface region (32) proximate the interface and a core region (36) remote from the interface, the surface and the core regions being contiguous, the mean binder fraction in the core region being less than that in the surface region and to a method of making a hard-metal body for such an element.
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