| 摘要 |
An article of manufacture comprising synthetic single crystals (50, 60, 350) of uniform size and shape selected from the group consisting of diamond or cubic boron nitride and held in a formation (figs. 1, 10, 19, 33) with selected crystallographic directions of the crystals oriented in the same direction so that the crystals as a group exhibit a common crystallographic direction (101, 102, 248, 360, 670, 672) which may selectively be the hardest or near-hardest direction, and a method of making such an article. Such orientation takes advantage of the hardness properties of the individual crystals by imparting such properties to the assembly. Various embodiments of the article are thus useful as an abrasive, a bearing, a heat sink or a semiconductor. |
