CAJ | 학술논문

采用化学沉淀法通过钛掺杂合成了不同钛掺杂量(0．2％~2．4％(质量分数))的羟基磷灰石纳米粉,研究了钛掺杂量对其烧结稳定性和晶粒尺寸的影响规律.结果表明,不同钛掺杂量对羟基磷灰石的烧结稳定性和晶粒尺寸有非常显著的影响.随着钛掺杂量的增加,羟基磷灰石的晶格结构发生变化,a 、c 轴尺寸及其晶胞体积都在增加,并且和钛掺杂量成正比.在1000~1200℃烧结,不同钛掺杂量羟基磷灰石均未发生分解,表明钛掺杂抑制了羟基磷灰石的高温分解,提高了它的烧结稳定性.同时,钛掺杂有效限制了烧结过程中羟基磷灰石晶粒的长大,0．8％(质量分数)钛掺杂羟基磷灰石晶粒尺寸较纯羟基磷灰石晶粒尺寸明显细化.
채용화학침정법통과태참잡합성료불동태참잡량(0．2％~2．4％(질량분수))적간기린회석납미분,연구료태참잡량대기소결은정성화정립척촌적영향규률.결과표명,불동태참잡량대간기린회석적소결은정성화정립척촌유비상현저적영향.수착태참잡량적증가,간기린회석적정격결구발생변화,a 、c 축척촌급기정포체적도재증가,병차화태참잡량성정비.재1000~1200℃소결,불동태참잡량간기린회석균미발생분해,표명태참잡억제료간기린회석적고온분해,제고료타적소결은정성.동시,태참잡유효한제료소결과정중간기린회석정립적장대,0．8％(질량분수)태참잡간기린회석정립척촌교순간기린회석정립척촌명현세화.
Hydroxyapatite nanopowder was synthesized by chemical precipitation method by the addition of tet-rabutyl titanate.The results showed that the addition of titanium to hydroxyapatite had a great influence on phase stability and grain size.When sintered at 1 000-1 200 ℃,hydroxyapatite with the addition of titanium did not decompose,which demonstrated that the phase stability of hydroxyapatite was improved.The structure of hydroxyapatite changed,such as a axis,c axis and unit volume,and they were proportional to the addition of ti-tanium.The grain size of 0.8wt% addition of titanium to hydroxyapatite was much smaller than that of pure hydroxyapatite.