| 摘要 |
Embodiments of the present invention relate to superabrasive materials, superabrasive compacts employing such superabrasive materials, and methods of fabricating such superabrasive materials and compacts. In one embodiment, a superabrasive material includes a matrix comprising a plurality of coarse-sized superabrasive grains, with the coarse-sized superabrasive grains exhibiting a coarse-sized average grain size. The superabrasive material further includes a plurality of superabrasive regions dispersed within the matrix, with each superabrasive region including a plurality of fine-sized superabrasive grains exhibiting a fine-sized average grain size less than the coarse-sized average grain size. In another embodiment, the superabrasive materials may be employed in a superabrasive compact. The superabrasive compact comprises a substrate including a superabrasive table comprising any of the disclosed superabrasive materials. Further embodiments are directed to applications utilizing the disclosed superabrasive articles in applications, such as rotary drill bits. |
