摘要
本文运用高温固相反应法和焰熔生长方法制备了非化学配比的MgO·(Al_2O_3)_n(其中n=1.0,1.3,1.5,2.0,2.3,2.5,2.7,3.0,4.5,5.0)尖晶石微粉及单晶体。并用XRD,SEM,TG/DTA,IR及常规测试手段分析了实验结果,认为尖晶石粉料具有高纯度、粉粒细且均匀、分散性好,以及白度好等特点。选择适当的n值,晶体容易生长且有较好的光学质量。化学分析表明;尖晶石有较好的化学性能,机械性能也好。因此,非化学配比的尖晶石既是短波长激光基质材料、陶瓷材料,也是优良的宝石饰品材料,可制成闪光的钻石和美丽的月长石代用品。
Nonstoichiometric Mgo · (A1_2O_3)_z ultrafine powder and single crystals have been perpared with n =1.0, 1.3, 1.5, 2.0, 2.3, 2.5, 2.7, 3.0, 4.5, and 5. 0 by high temperature solid reaction method and flame fusion method. The obtained products have been characterized by XRD, SEM, TG/DTA, IR and general detecting methods. The results of analysis show that the powder is spinel phase with high purity, good dispersion, homogeneoucs, small particle and excellent whiteness. Especially , when n value is proper, the spinel crystals grow easily and have high optical guality. Chemical analysis prove spinel crystals have high chemical stability and good mechanical properties. Therefore, as short wave solid laser host material, ceramic material and precious stone decorative material, nonstoichiometric spinels are better promise candidate.
出处
《功能材料》
EI
CAS
CSCD
1993年第4期362-367,共6页
Journal of Functional Materials
基金
四川大学科研基金
关键词
固相反应法
尖晶石单晶体
晶体
bigh temperature solid reaction method
flame fusion method (Verneuil Pocess)
nonstoichiometric
spinel ultrafine powder
spinel single crystal
