| 摘要 |
PURPOSE:To obtain a crystal having a small distribution width of grain sizes, high rate of crystal growth and excellent mechanical characteristics by disposing diamond seeds in a specific form and growing the same until the crystal grains having specific grain sizes are obtd. CONSTITUTION:Many recesses 2 to be put therein with the seeds are perforated to a flux metallic plate 1. Such recesses 2 are regularly perforated at equal intervals in such a way that the spaces l between the adjacent recesses are 50-300mu as the spaces between the adjacent crystal particles after the crystal growth. The flux metal plates 1 embedded with the diamond seeds 3 in the recesses 2 are superposed on non-diamond carbon plates 4 in such a manner that the surfaces disposed with the diamond seeds are positioned on the opposite (boundary) side. The superposed plates or the laminated plates laminated with the plural superposed plates are put under the pressure and temp. conditions in the stable region of the diamond growth, by which the diamond crystals are grown. |
