采用添加造孔剂法,选择合适的造孔剂聚甲基丙烯酸甲酯( PMMA),通过严格筛分,可烧结 制得孔径可控的多孔羟基磷灰石陶瓷,气孔率可从 20%到 50%变化。并对烧结多孔体中孔的结 构、孔径分布与特征,影响气孔率和力学性能的因素进行了研究与讨论。
Hydroxyapatite ceramics with controlled porosity and pore size were prepared by adding PMMA as pore- forming agent(PFA). Samples were prepared with total pore volumes changing from 20% to 50% . The pore structure ,pore size distribution and characteristics were studied, and it was found that the hydrox- yapatite ceramics with controlled- porosity could prepared by adding PMMA as PFA . As well, the factors influencing porosity and mechanical strength of porous ceramics were discussed.
参考文献
[1] | Liu D M .[J].Key Engineering Materials,1996,115:209-232. |
[2] | Hench Larry L .[J].Journal of the American Ceramic Society,1998,81(07):1705-1728. |
[3] | Lehuec JC.;Clement D.;Faber J.;Lerebeller A.;Schaeverbeke T. .INFLUENCE OF POROSITY ON THE MECHANICAL RESISTANCE OF HYDROXYAPATITE CERAMICS UNDER COMPRESSIVE STRESS[J].Biomaterials,1995(2):113-118. |
[4] | Rice R W .[J].Journal of Materials Science,1993,28(08):2187-2190. |
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