| 等离子喷涂Al2O3陶瓷涂层的结构与组织特征 |
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| 引用本文： | 杨元政,刘正义,庄育智.等离子喷涂Al2O3陶瓷涂层的结构与组织特征[J].兵器材料科学与工程,2000,23(3):7-11. |
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| 作者姓名： | 杨元政 刘正义 庄育智 |
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| 作者单位： | 1. 广东工业大学
2. 华南理工大学 |
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| 基金项目： | 高等学校博士学科点专项科研项目;D1-102-072; |
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| 摘 要： | 用 X射线衍射、扫描电镜等研究了等离子喷涂 Al2 O3 陶瓷涂层的相结构、相组成及其组织特征。金属粘结层与陶瓷涂层均呈层状结构 ,陶瓷涂层致密性较差、易出现微裂纹 ,金属粘结层相对致密、一般无裂纹。陶瓷涂层以亚稳相γ- Al2 O3为主要相 ,同时存在α- Al2 O3。另外 ,涂层设计对涂层硬度有一定影响
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| 关 键 词： | 等离子喷涂 Al2O3陶瓷涂层 层状结构 亚稳相 |
| 文章编号： | 1004-244X(2000)03-0007-05 |
| 修稿时间： | 1999年5月17日 |
STRUCTURE OF PLASMA-SPRAYED Al2O3 CERAMIC COATING |
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| Yang Yuanzheng,Liu Zhengyi,Zhuang Yuzhi.STRUCTURE OF PLASMA-SPRAYED Al2O3 CERAMIC COATING[J].Ordnance Material Science and Engineering,2000,23(3):7-11. |
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| Authors: | Yang Yuanzheng Liu Zhengyi Zhuang Yuzhi |
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| Abstract: | The phase structure and phase composition in the plasma sprayed Al 2O 3 ceramic coatings have been investigated using X ray diffraction and scanning electronic microscope.Both the metal bond coat and the ceramic coat display a laminar structure.The ceramic coat shows less density and there exists some cracks frequently,whereas the bond coat denser and no cracks.The metastable γ Al 2O 3 exists as the main phase along with an amount of stable phase α Al 2O 3.Furthermore,it is found that the coating design has effect on the microhardness in some degree. |
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| Keywords: | plasma spraying Al_2O_3 ceramic coating laminar structure metastable phase |
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