Ti_3Al/HAP复合材料的制备与性能研究  

Preparation and Properties of Ti_3Al/HAP Composites

作　　者：岳雪涛[1,2,3] 孙康宁[1,2] 

机构地区：[1]山东大学材料液态结构及其遗传性教育部重点实验室,济南250061 [2]山东大学工程陶瓷山东省重点实验室,济南250061 [3]山东建筑大学材料科学与工程学院,济南250101

出　　处：《人工晶体学报》2013年第9期1884-1888,共5页Journal of Synthetic Crystals

基　　金：国家自然科学基金(81171463)

摘　　要：采用化学沉淀法在模拟体液中制备了纳米羟基磷灰石(HAP s)粉体,用金属钛粉和铝粉经过机械合金法,制备了金属间化合物Ti3Al;将制备的HAP粉体作为基体材料加入第二相Ti3Al粉体,经过球磨分散得到Ti3Al/HAP复合粉体,经过热压烧结,得到羟基磷灰石与金属间化合物Ti3Al的复合材料。通过XRD、SEM及TEM等测试方法,分析了用普通化学沉淀法制备的羟基磷灰石(HAP c)和在模拟体液中生成的羟基磷灰石(HAP s)的区别及Ti3Al对羟基磷灰石结构和性能的影响。测试结果显示:在模拟体液中生成的羟基磷灰石颗粒均匀细小,纯度较高,结晶度较低;羟基磷灰石掺入一定量的Ti3Al后,弯曲强度和断裂韧性有所降低,X射线衍射显示复合材料中只有Ti3Al和HAP两种物质,没有新物质生成。Hydroxyapatite powders were synthesized by chemical precipitation method in the simulated body fluid （SBF） by a biomimetie method, and by the means of mechanical alloying, the intermetallic compound Ti3Al was obtained from the aluminium and titanium powders. The Ti3Al powder was added into nano-hydroxyapatite as the second composition then the ball milling technology was used to obtained the mixture. The Ti3AL/HAP composite was prepared through hot-pressure sintering process in Argon. By the means of XRD, SEM and TEM, the difference of the HAPS made in the simulated body fluid and HAPc prepared with the method of chemical deposition in properties and structure was analyzed. The results show that HAP grain produced in SBF is even and comparatively high purity and low crystallization level. With the increase of intermetallic compound Ti3Al, bending strength and fracture toughness decreased compared with the pure HAP. The XRD results show that the composite material has two components of Ti3 Al and HAP only and no new material was produced.

关 键 词：模拟体液 羟基磷灰石 TI3AL 化学沉淀法 

分 类 号：TB332[一般工业技术—材料科学与工程]