Microstructure and thermal behavior of gradient bioceramic coatings fabricated by laser cladding on titanium alloy

CORC > 兰州理工大学 > 兰州理工大学 > 省部共建有色金属先进加工与再利用国家重点实验室

	Microstructure and thermal behavior of gradient bioceramic coatings fabricated by laser cladding on titanium alloy
	Zheng, Min 2; Fan, Ding 2; Li, Xiu-Kun 2; Liu, Qi-Bin 1; Zhang, Jian-Bin 2
	2008
关键词	Hydroxyapatite Laser cladding Microstructure Scanning electron microscopy Thermogravimetric analysis Titanium alloys Bioactive phases Bioceramic coatings
卷号	373-374
页码	710-713
英文摘要	Based on a high power CO2 laser beam passing by an integral mirror, the bioceramic coatings of gradient composition were designed and fabricated on titanium alloy substrate (Ti-6Al-4V). The relations among laser processing parameters, microstructure and thermal behavior of the gradient bioceramic coatings were investigated. The morphology of the composites was observed by scanning electron microscope (SEM). Phase composition of the coatings was analyzed by X-ray diffraction (XRD). And the thermal behavior of raw powders was evaluated through thermal gravimetry and differential scanning calorimetry (TG-DSC) test. The results demonstrated that the bioceramic coatings were metallurgically bonded to the titanium alloy substrate. The bioceramic coatings contained such bioactive phases as HA and β-TCP, which offered an advantageous condition for osseo-connection. The DSC thermograms showed the endothermic peaks at different temperature, which resulted from the different transitions process, respectively. Furthermore, the DSC results were in accordance with TG data of the powders and showed that with the increasing temperature the weight of sample accordingly decreased.
会议录	Key Engineering Materials
会议录出版者	Trans Tech Publications Ltd
语种	英语
ISSN号	10139826
内容类型	会议论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/116954]
专题	省部共建有色金属先进加工与再利用国家重点实验室材料科学与工程学院机电工程学院
作者单位	1.College of Materials Science and Engineering, Guizhou University, Guiyang 550003, China 2.State Key Laboratory of Gansu Advanced Non-Ferrous Metal Materials, Lanzhou University of Technology, Lanzhou 730050, China;
推荐引用方式 GB/T 7714	Zheng, Min,Fan, Ding,Li, Xiu-Kun,et al. Microstructure and thermal behavior of gradient bioceramic coatings fabricated by laser cladding on titanium alloy[C]. 见:.