Yamashita K, Yonehara E, Ding X, Nagai M, Umegaki T, Matsuda M
Department of Industrial Chemistry, Tokyo Metropolitan University, Japan.
J Biomed Mater Res. 1998 Spring;43(1):46-53. doi: 10.1002/(sici)1097-4636(199821)43:1<46::aid-jbm5>3.0.co;2-m.
By means of an electrophoretic deposition technique followed by sintering, alumina and zirconia ceramics were coated with apatitic composites composed of porous surface and intermediate layers of hydroxyapatite and an adhesive calcium phosphate layer. The electrophoretic deposition of these layers was attained by the use of a mixed solvent of acetylacetone and alcohol as well as the mixed powders of the calcium phosphates and alumina. The adhesive layer was formed by the codeposition of calcium phosphate glass powders (Ca/P = 1/2) with hydroxyapatite, while the open porosity of the surface layer was increased with the addition of alumina to the hydroxyapatite layers. The resultant phases of sintered composite layers were tricalcium phosphate and alumina with a small amount of hydroxyapatite.
通过电泳沉积技术随后进行烧结，氧化铝和氧化锆陶瓷被涂上了由多孔表面、羟基磷灰石中间层和粘性磷酸钙层组成的磷灰石复合材料。这些层的电泳沉积是通过使用乙酰丙酮和酒精的混合溶剂以及磷酸钙和氧化铝的混合粉末来实现的。粘性层是通过磷酸钙玻璃粉末（Ca/P = 1/2）与羟基磷灰石的共沉积形成的，而表层的开孔率随着向羟基磷灰石层中添加氧化铝而增加。烧结复合层的最终相是磷酸三钙和氧化铝以及少量的羟基磷灰石。
