|
|
Effect of sintering temperature on the properties of biomedical titanium matrix composites |
FAN Xing-ping,YANG Cheng |
School of Materials and Engineering, Panzhihua University, Panzhihua 617000, China |
|
|
Abstract Biomedical titanium matrix composites were fabricated by powder metallurgy method with titanium and hydroxyapatite (HA) powder as raw materials. The influence of different sintering temperature (1 200 ℃, 1 300 ℃ and 1 400 ℃) on microstructure, phase transformation, densification and compressive strength were studied. The results indicate that the composites exhibit high mechanical properties and good microstructure at proper sintering temperature. The HA has decomposed and reacted at 1 200 ℃, moreover, the microstructure of the composite material is loose. The density increases and the microstructure grows coarse with increasing sintering temperature, meanwhile, a large number of TiP and CaTi4(PO4)6 brittle phases form, which decreases the compressive strength of the composites.
|
Received: 25 November 2015
Published: 15 December 2016
|
|
|
|
[1] 邦江涛,赵西成,杨西荣。医用钛的腐蚀性能研究 [J]. 热加工工艺,2012,41(22):17-19.[2] 韩钰。钛/羟基磷灰石(Ti/HA)生物复合材料的SPS制备研究[D].武汉大学,2005. [3] 宁聪琴,周玉,黄丛春,等。粉末冶金法制备Ti/HA生物复合材料的体内生物活性[J].无机材料学报.2003,18(4):879-884.[4] 钱超,樊英姿,孙健,等。三维打印制备钛/羟基磷灰石复合体及功能梯度材料[J].中国组织工程研究.2013,17(29):5364-5370.[5] 刘芳,周科朝,刘咏. 原始粉料的球磨工艺对Ti/HA生物复合材料性能的影响[J].粉末冶金技术,2005,23(2):116-119.[6] Salman S, Gunduz O, Yilmaz S, et al.Sintering effect on mechanical properties of composites of natural hydroxyapatites and titanium. Ceram Int 2009,35: 2965-71.[7] Balbinotti P, Gemelli E, Buerger G, et al.Microstructure development on sintered Ti/HA biocomposites produced by powder metallurgy. Mater Res-Ibero-Am J 2011;14:384–93.[8] Pramanik S, Agarwal AK, Rai KN, et al. Development of high strength hydroxyapatite by solid-state-sintering process. Ceram Int 2007,33:419-26.[9]Knabe C,Berger G,Gildenhaar R,et al.The modulation of osteogenesis invitro by calcium tiatanium phosphate coatings [J]. Biomaterials,2004,25(20):4911-4919. |
|
|
|