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微波烧结工艺制备纳米羟基磷灰石陶瓷
作者:黄名政 王欣宇 王友法 蔡正伟 张博文     侯袁婧 
单位:(武汉理工大学 材料复合新技术国家重点实验室 武汉 430070) 
关键词:微波烧结  羟基磷灰石 产业化  抗弯强度  纳米陶瓷 
分类号:R318.08
出版年,卷(期):页码:2019,47(6):0-0
DOI:
摘要:

 采用微波烧结法对分别以沉淀法和溶胶凝胶法制备技术的羟基磷灰石(HAP)进行烧结,获得了高强度且晶粒可控的HAP陶瓷。利用X射线衍射、场发射扫描电子显微镜、电子万能材料试验机对样品的相组成、微观形貌和力学性能进行了表征。结果表明:以溶胶凝胶法所制备的HAP粉末为原料的陶瓷材料更容易烧结致密;相比无压烧结,微波烧结能够在保证力学性能的基础上降低烧结温度,控制晶粒生长。当以溶胶凝胶法制备的HAP粉末为原料,压制成型,在微波烧结工艺下烧结制度为1 100 ℃恒温30 min时,可获得弯曲强度为93 MPa、晶粒大小约为300 nm的高强度HAP陶瓷材料。

 Two kinds of hydroxyapatite (HAP) materials synthesized by precipitation and sol–gel methods were sintered by a microwave sintering method to obtain high-strength and grain-controllable HAP bioceramics. The phase composition, micro-morphology and mechanical properties of the samples were characterized by X-ray diffraction, field emission scanning electron microscopy and electronic universal material tests. The results show that the HAP powder prepared by sol–gel method is easier to sinter and denser than that by precipitation method. Compared to pressureless sintering, microwave sintering can reduce sintering temperature and make the grains smaller after sintering based on the guaranteeing mechanical properties. When the HAP powder prepared by sol–gel method is pressed and formed, a high-strength HAP ceramic material with a bending strength of 93 MPa and a grain size of approximately 300 nm is obtained, and the sintering system is maintained at 1 100 ℃ for 30 min under microwave sintering.

基金项目:
国家重点研发计划(2017YFC1103800);湖北省技术创新专项(2017ACA168);湖北省科技支撑计划(2015BCE022)。
作者简介:
参考文献:
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