Invention Grant
US07691173B2 Consolidated hard materials, earth-boring rotary drill bits including such hard materials, and methods of forming such hard materials 有权
综合硬质材料,包括这种硬质材料的钻孔旋转钻头以及形成这种硬质材料的方法

Consolidated hard materials, earth-boring rotary drill bits including such hard materials, and methods of forming such hard materials
Abstract:
The present invention includes consolidated hard materials, methods for producing them, and industrial drilling and cutting applications for them. A consolidated hard material may be produced using hard particles such as B4C or carbides or borides of W, Ti, Mo, Nb, V, Hf, Ta, Zr, and Cr in combination with an iron-based, nickel-based, nickel and iron-based, iron and cobalt-based, aluminum-based, copper-based, magnesium-based, or titanium-based alloy for the binder material. Commercially pure elements such as aluminum, copper, magnesium, titanium, iron, or nickel may also be used for the binder material. The mixture of the hard particles and the binder material may be consolidated at a temperature below the liquidus temperature of the binder material using a technique such as rapid omnidirectional compaction (ROC), the CERACON® process, or hot isostatic pressing (HIP). After sintering, the consolidated hard material may be treated to alter its material properties.
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