the present invention relates to a rare earth ion double-doped or three-doped or three-doped yttrium oxide base up-conversion luminescence material and its preparation method.
this paper takes advantage of silicon dioxide thin film and yttrium oxide for surface modification to increase the infrared transmittance of sapphire.
因此本文结合氧化硅与氧化钇的优点把两者用作红外增透薄膜对蓝宝石进行表面改性以提高其红外透过率。
another method of increasing vortex pinning involves adding microscopic inclusions of some second material such as yttrium oxide or titanium diboride.
另一个增强涡流固定效果的方法是加入第二种材料的小颗粒,例如氧化钇或是二硼化钛。
the effect of yttrium oxide on microstructure, chemical composition and mechanical properties of weld metal was studied and the active mechanism of yttrium oxide was also discussed.
the results showed that the particle size of yttrium oxide could be increased effectively by improving acidity, precipitation temperature, prolonging aging time, and decreasing feeding speed.
结果表明:提高酸度、沉淀反应温度、延长陈化时间以及降低加料速度均可以有效增大氧化钇粒度;
the large particle yttrium oxide was prepared using oxalic acid as precipitation agent. the effects of preparation conditions on the particle size of yttrium oxide were discussed.
采用草酸沉淀法研究制备了大颗粒氧化钇,并对各制备条件对氧化钇粒度影响进行了分析讨论。
yttrium oxide and cerium oxide produced only for the follow-up study done on the basis of feasibility analysis.