| 激光熔覆原位合成制备生物陶瓷涂层 |
| |
| 引用本文： | 王迎春,李飞群,李延民,丁健君,李建国,周尧和. 激光熔覆原位合成制备生物陶瓷涂层[J]. 激光技术, 2004, 28(6): 572-574 |
| |
| 作者姓名： | 王迎春 李飞群 李延民 丁健君 李建国 周尧和 |
| |
| 作者单位： | 1.上海交通大学, 材料科学与工程学院, 上海, 200030 |
| |
| 摘 要： | 激光熔覆直接处理CaHPO4·2H2O与CaCO3的复合粉末,制备出了羟基磷灰石(HAP)生物陶瓷涂层。结果表明,熔覆层组织为粒状的HAP分布于互相搭接的棒状β-Ca2P2O7之中,熔覆层主要物相为β-Ca2P2O7与Ca5(PO4)3(OH)。涂层与基体结合处为平界面外延生长的带状组织,熔覆层中部则为典型的胞状晶,熔覆层表面组织为粒状等轴晶,组织演化决定于激光熔覆时的温度梯度/凝固速度(G/R)的比值。
|
| 关 键 词： | 激光熔覆 生物陶瓷涂层 物相 凝固组织 |
| 文章编号： | 1001-3806(2004)06-0572-03 |
| 收稿时间： | 2003-12-17 |
| 修稿时间： | 2003-12-17 |
The in-situ fabricating of the bioceramic coating by laser cladding |
| |
| WANG Ying-chun,LI Fei-qun,LI Yan-min,DING jian-jun,LI Ji an-guo,ZHOU Yao-he. The in-situ fabricating of the bioceramic coating by laser cladding[J]. Laser Technology, 2004, 28(6): 572-574 |
| |
| Authors: | WANG Ying-chun LI Fei-qun LI Yan-min DING jian-jun LI Ji an-guo ZHOU Yao-he |
| |
| Abstract: | The bioceramic coating is fabricaed by laser cladding directly processing the mixed power of CaHPO4·2H2O and CaCO3.It is shown that the microstructure of the coating is the granular HAP distributed in the ov erlapped club-shaped β-Ca2P2O7 and the main phases in the coating are β-Ca2P2O7 and Ca5(PO4)3(OH);there is the bonded structure of the extension growth on plane basis between the substrate and the cladding layer,typical cellular crystals in the middle of the molten layer and equiaxed crystals at the top of the cladding layer.The microstructure evolution is determined by the ratio of temperature gradient and solidification velocity(G/R) produced by laser cladding. |
| |
| Keywords: | laser cladding bioceramic coating phase s olidification microstructure |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《激光技术》浏览原始摘要信息 |
|
点击此处可从《激光技术》下载免费的PDF全文 |
|
