HA晶须的制备及在HA/Mg生物复合材料中的应用  

Synthesis of hydroxyapatite whisker reinforcements for magnesium matrix biocomposites

作　　者：张敏[1] 高家诚[1] 陈飞宏[1] 

机构地区：[1]重庆大学材料科学与工程学院,重庆400045

出　　处：《复合材料学报》2011年第2期130-135,共6页Acta Materiae Compositae Sinica

基　　金：国家自然科学基金资助项目(30670562)

摘　　要：利用水热法合成羟基磷灰石晶须(HAW),采用浆料-粉末冶金法制备羟基磷灰石晶须/镁金属基复合材料(HAW/Mg)。用XRD、FTIR、FESEM和TG对材料进行表征。分析了尿素含量对HA物相和晶体结构的影响,以及HAW/Mg复合材料的热稳定性和显微结构。结果表明:在本实验条件下,得到的产物均为带状、含碳酸根的HAW;随着尿素添加量的增加,HAW逐渐变长且结晶度增加;HAW与Mg之间在600℃以下无化学反应,且HA不会加剧Mg的氧化;HAW在HAW/Mg复合材料中分散均匀,不易折断。The hydrothermal synthesis of hydroxyapatite whiskers（HAW） and the slurry-and-powder-metallurgy preparation of the hydroxyapatite whisker reinforced magnesium matrix composite（HAW/Mg） were described.The structures and the associated properties of HAW and HAW/Mg composites were characterized by XRD,FTIR,FESEM and TG.The relationship between urea content and crystal structure of HAW was explored.The thermal stability and microstructure of HAW/Mg composites were investigated.The results show that pure carbonate-containing HAW with belt-like morphology are acquired in this study;that the length and crystallinity of HA increase with the increase of urea content;that no chemical reaction occurs between HAW and Mg under 600 ℃ and oxidation of Mg is not deteriorated by HA;that HAW with high toughness distribute evenly in HAW/Mg composites.

关 键 词：羟基磷灰石晶须 镁 金属基复合材料 水热法 粉末冶金法 

分 类 号：TB333[一般工业技术—材料科学与工程] TB331