HA-n-ZrO2核壳层复合陶瓷微粉材料的制备与表征

复合材料学报, 2011, 28(2): 170-173.

HA-n-ZrO2核壳层复合陶瓷微粉材料的制备与表征

郭进武 ^1, , 张军 ^2, , 彭伟涛 ^3, , 徐波 ^4, , 冯玉立 ^5, , 郭彦辉 ^6,

1.河南科技大学化工与制药学院,洛阳,471003

2.河南科技大学化工与制药学院,洛阳,471003

3.河南科技大学化工与制药学院,洛阳,471003

4.河南科技大学化工与制药学院,洛阳,471003

5.河南科技大学化工与制药学院,洛阳,471003

6.河南科技大学化工与制药学院,洛阳,471003

基金项目: 河南省科技攻关项目(0524240014;102102210170) 国家自然科学基金项目(21076063)

关键词：四方相氧化锆 , 羟基磷灰石 , 复合陶瓷 , 水热 , 力学性能

Fabrication and characterization of core-shell HA-n-ZrO2 composite ceramic powders

采用水热-沉积原位分步反应法.制备了羟基磷灰石(HA)-氧化锆(ZrO2)复合微粉,采用XRD和TEM对复合微粉的物相、形貌和大小进行了表征.对复合微粉进行模压成型、热处理制备了复合陶瓷试样,并测试其力学性能.结果表明:所得复合微粉以纳米级四方相ZrO2为"核心",逐层包覆HA,形成核-壳层结构(HA-n-ZrO2);复合微粉也呈纳米尺度,且晶化度良好,随着HA含量的增加,包覆层逐步加厚.复合微粉中HA质量分数由0增大至100%时,所得成型陶瓷的抗弯强度和平均维氏硬度分别由183 MPa降至61 MPa以及781.75 MPa降到131.76 MPa,表明ZrO2的存在对于增大陶瓷体的力学性能确能起到"核心"关键作用.

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