Y_2O_3通常是用草酸钇在(850～600℃)静态空气中加热分解制得的。其分解过程受环境气氛的影响,在产物Y_2O_3中含有少量碳杂质,如C和Y_2O_3·CO_(20)Al_2O_3是由硫酸铝铵热分解制得的。由于它在热分解过程需要吸收大量热量才能分解成Al_2O_3,因此易于集结成块而把某些碳杂质包含在其中。已经证实,用这种Y_2O_3和Al_2O_3作为YAP晶体的熔料,在缺氧高温 Y_2O_3 is usually yttrium oxalate (850 ~ 600 ℃) in the static air heating decomposition. The decomposition process is affected by the environmental atmosphere, the product Y_2O_3 contains a small amount of carbon impurities, such as C and Y_2O_3 · CO_ (20) Al_2O_3 is prepared by the thermal decomposition of ammonium aluminum sulfate. Because it requires a large amount of heat to be decomposed into Al 2 O 3 during thermal decomposition, it is easy to agglomerate and contain certain carbon impurities therein. It has been confirmed that the Y_2O_3 and Al_2O_3 as YAP crystal melt, hypoxia in high temperature