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中文摘要：
用化学共沉淀法制备了β-磷酸三钙（tricalcium phosphate,TCP）和不同掺锌量的β-磷酸三钙前躯体,不同含锌量的磷酸三钙前驱体粉末在850℃煅烧2h,制备出β-TCP和不同掺锌量的β-TCP粉末。X射线衍射结果显示,随掺锌量的增加β-TCP晶体的晶格参数常数a（b）和c减小,并可显著提高其晶相转变温度,掺锌量为2.5%（摩尔分数,Zn与Zn＋Ca的摩尔比）的β-TCP转变为α-TCP的温度可从1150℃提高到1300℃。扫描电镜照片、抗弯强度和显气孔率结果表明,锌的掺杂有助于制备力学性能良好的致密β-TCP陶瓷。用掺锌2.5%的β-TCP坯体在1100℃烧结2h得到了力学性能良好的致密β-TCP陶瓷。
英文摘要：
β-tricalcium phosphate （TCP） and zinc doped β-TCP powders were synthesized by calcining the TCP precursor with different zinc contents that were prepared by the chemical co-precipitation at 850 ℃ for 2 h.The X-ray diffraction results show that the lattice parameters a（b） and c of β-TCP decrease with the increase of Zn2＋ mole fraction （mole ratio of Zn to Zn＋Ca,the same below,up to 10%）.Moreover,the phase transformation temperature of β-TCP to α-TCP increases apparently due to zine dopant.The phase transformation temperature of β-TCP substituted with 2.5% Zn2＋ increases from 1 150 to 1 300 ℃.The results of scanning electron microscopy observation,flexural strength and apparent porosity indicate that zinc substitution is helpful to prepare β-TCP ceramics with high strength and density.In this investigation,the β-TCP ceramics with high strength and density were prepared by sintering compact green bodies composed of β-TCP with 2.5% Zn2＋ at 1100 ℃ for 2 h.
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