摘要
为了提高电导率,以溶胶-凝胶法制备了硅酸盐氧基磷灰石.通过TG-DTA、XRD和IR分析,研究了从凝胶转变为硅酸盐氧基磷灰石过程中凝胶焙烧温度的影响.结果表明,制备Sr2La8(SiO4)6O2、La9.33(SiO4)6O2和La10(SiO4)6O3时凝胶的焙烧温度分别为850、950℃和950℃;间隙氧可能诱发晶体结构扭曲,晶胞体积变大.通过IR和XRD分析,证实了在La9.33(SiO4)6O2和La10(SiO4)6O3磷灰石中间隙氧的存在.
In order to enhance the conductivity of silicate apatite,the silicate oxyapatites were synthesized via sol-gel method. The influence of calcination temperature on the transformation of gel to final apatite phases during the synthesis of silicate oxyapatites was investigated using TG-DTA,XRD and FTIR analysis. Results show that pure apatite-type Sr2La8（SiO4）6O2,La9.33（SiO4）6O2 and Sr2La8（SiO4）6O2 can be obtained by calcining the gel powders at 850、 950 ℃ and 950 ℃ respectively. The interstitial oxygen can be likely to cause local structural distortions,and increase the volume of unit cell. Analysis results of IR and XRD indicate that there exists the interstitial oxygen in the structure of La9.33（SiO4）6O2 and Sr2La8（SiO4）6O2.
出处
《材料科学与工艺》
EI
CAS
CSCD
北大核心
2009年第6期848-852,共5页
Materials Science and Technology
基金
教育部重点项目(206044
205050)
黑龙江省杰出青年基金资助项目
哈尔滨市青年创新人才基金资助项目(RC2006QN001021
2007RFQXG023)
哈尔滨工程大学基础研究基金资助项目(HEUFT07051
HEUFT07030)
