| Effect of Y2O3 Content on Microstructure of Gradient Bioceramic Composite Coating Produced by Wide-Band Laser Cladding |
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| 作者姓名： | 刘其斌 邹江龙 郑敏 董闯 |
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| 作者单位： | Materials School，Guizhou University，Guiyang550003，China，State KeyLaboratoryofMaterials SurfaceModification by Tree Beams，Dalian University ofTechnology，Dalian 116024，China，State KeyLaboratoryofMaterials SurfaceModification by Tree Beams，Dalian University ofTechnology，Dalian 116024，China，Materials School，Guizhou University，Guiyang550003，China，State KeyLaboratoryofMaterials SurfaceModification by Tree Beams，Dalian University ofTechnology，Dalian 116024，China |
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| 基金项目： | Project supported by Governor′s Foundation of Guizhou Province (2004-07) |
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| 摘 要： | Hydroxyapatite (HA) ,a kind of bioactive materi-al , has wide application prospect in hard tissue re-placemen and repairment due to its si milar chemicalcomposition and crystallographic structure to that ofbone mineral1 ,2]. Since HA has lowstrength (50 …
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| 关 键 词： | 生物陶瓷 功能材料 梯度涂层 激光熔覆 Y2O3 稀土 显微结构 |
| 文章编号： | 1002-0721（2005）04-0446-05 |
| 收稿时间： | 2004-09-02 |
| 修稿时间： | 2004-11-30 |
Effect of Y2O3 Content on Microstructure of Gradient Bioceramic Composite Coating Produced by Wide-Band Laser Cladding |
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| Liu Qibin,Zou Jianglong,Zheng Min,DONG Chuang.Effect of Y2O3 Content on Microstructure of Gradient Bioceramic Composite Coating Produced by Wide-Band Laser Cladding[J].Journal of Rare Earths,2005,23(4):446-450. |
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| Authors: | Liu Qibin Zou Jianglong Zheng Min DONG Chuang |
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| Abstract: | To eliminate thermal stress and cracks in the process of laser cladding, a kind of bioceramic coating with gradient compositional design was prepared on the surface of Ti alloy by using wide-band laser cladding. And effect of Y2O3 content on gradient bioceramic composite coating was studied. The experimental results indicate that adding rare earth can refine grain. Different rare earth contents affect formation of HA and β-TCP in bioceramic coating. When the content of rare earth ranges from 0.4% to 0.6%, the active extent of rare earth in synthesizing HA and β-TCP is the best, which indicates that "monosodium glutamate" effect of rare earth plays a dominant role. However, when rare earth content is up to 0.8%, the amount of synthesizing HA and β-TCP in coating conversely goes down, which demonstrates that rare earth gradually losts its catalysis in manufacturing HA and β-TCP. |
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| Keywords: | Y2O3 content wide-band laser cladding gradient bioceramic coating microstructure rare earths |
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