7 0 0 0 OA 望月圭介伝
- 著者
- 望月圭介伝刊行会 編
- 出版者
- 羽田書店
- 巻号頁・発行日
- 1945
2 0 0 0 OA MoO_3-B_2O_3フラックス蒸発法によるエメラルド結晶の育成
- 著者
- 大石 修治 望月 圭介 平野 眞一
- 出版者
- 公益社団法人日本セラミックス協会
- 雑誌
- 日本セラミックス協会学術論文誌 : Nippon Seramikkusu Kyokai gakujutsu ronbunshi (ISSN:18821022)
- 巻号頁・発行日
- vol.102, no.1185, pp.502-504, 1994-05-01
- 被引用文献数
- 3 6
The growih of emerald crystals by the flux evaporation method in the system Mo0_3 B_20_3 rs reported. The crys tal growth was conducted by heating a mixture of a so lute (3BeO・Al_2O_3・6SiO_2+1wt% Cr_2O_3) and a fiux (MoO_3 B_2O_3) at 1100℃, followed by holding at 1100℃ for 10, 20, 25 and 30h. The evaporation loss of flux decreased gradually with increasing amount of B_20_3 ad ded to Mo0_3 and increased with the holding time. The transparent emerald crystals were grown with the typi cal emerald green color in size up to I mm. The crystal size was dependent on the evaporation loss of flux. Hexagonal thin plate like crystals were grown from an Mo0_3 rich flux containing 0.15 0.60 wt% B_20_3. The plate like crystals were bounded by the {0001} and {1010} faces. In rare cases, the small {1120} faces ap peared. Crystals grown froun the MoO_3 flux were twelve sided prism in shape. Molybdenum trioxide con taining a small amount of B_2O_3 was found to be a suita ble flux for growing plate like crystals of emerald.