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DIAMOND-ENHANCED CUTTING ELEMENTS, EARTH-BORING TOOLS EMPLOYING DIAMOND-ENHANCED CUTTING ELEMENTS, AND METHODS OF MAKING DIAMOND-ENHANCED CUTTING ELEMENTS
DIAMOND-ENHANCED CUTTING ELEMENTS, EARTH-BORING TOOLS EMPLOYING DIAMOND-ENHANCED CUTTING ELEMENTS, AND METHODS OF MAKING DIAMOND-ENHANCED CUTTING ELEMENTS
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机译:增强金刚石的切削元件,采用金刚石增强的切削元件的钻土工具以及制造增强金刚石的切削元件的方法
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摘要
Cutting elements for use in earth-boring applications include a substrate, a transition layer, and a working layer. The transition layer and the working layer comprise a continuous matrix phase and a discontinuous diamond phase dispersed throughout the matrix phase. The concentration of diamond in the working layer is higher than in the transition layer. Earth-boring tools include at least one such cutting element. Methods of making cutting elements and earth-boring tools include mixing diamond crystals with matrix particles to form a mixture. The mixture is formulated in such a manner as cause the diamond crystals to comprise about 50% or more by volume of the solid matter in the mixture. The mixture is sintered to form a working layer of a cutting element that is at least substantially free of polycrystalline diamond material and that includes the diamond crystals dispersed within a continuous matrix phase formed from the matrix particles.
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