| 激光重熔工艺对热喷涂陶瓷层微观结构的影响 |
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| 引用本文： | 吴秋红,贺连龙.激光重熔工艺对热喷涂陶瓷层微观结构的影响[J].金属热处理,1995(7):7-10. |
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| 作者姓名： | 吴秋红 贺连龙 |
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| 作者单位： | 华中理工大学!武汉，430074，华中理工大学!武汉，430074，华中理工大学!武汉，430074，中国科学院金属研究所，中国科学院金属研究所 |
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| 基金项目： | 863课题!863－715－23－06－01 |
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| 摘 要： | 研究了在１Ｃｒ１８ＮｉｏＴｉ基体上热喷涂Ａｌ２Ｏ３－１３％ＴｉＯ２陶瓷层，进行激光重熔对陶瓷微观结构的影响。激光重熔陶瓷层中，主要组成相为ａ－ＡＩ２Ｏ３及ＡＩ２ＴｉＯ５，在条件合适时，在ａ－ＡＩ２Ｏ３中还有一种超结构，即有序相析出；有序相的存在可阻碍表面裂纹的产生；激光重熔陶瓷层中，扫描速度增加，表面裂纹的宽度增加；激光输出功率增加，表面裂纹的宽度亦增加。
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| 关 键 词： | 陶瓷 涂层 激光重熔 显微结构 |
The Influence of Laser Remelting Technology on Microstructure in Thermal Sprayed Ceramic Coatings |
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| Wu Qiuhong, Tao Zengyi, Cui Kun, He Lianlong, Li Douxing.The Influence of Laser Remelting Technology on Microstructure in Thermal Sprayed Ceramic Coatings[J].Heat Treatment of Metals,1995(7):7-10. |
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| Authors: | Wu Qiuhong Tao Zengyi Cui Kun He Lianlong Li Douxing |
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| Affiliation: | Wu Qiuhong; Tao Zengyi; Cui Kun; He Lianlong; Li Douxing |
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| Abstract: | The influence of laser remelting technology on ceramic coating microstructure was investigated for a thermal sprayed Al2O3-13% TiO2 on a stainless steel lCr18Ni9Ti. In laser remelted ceramic coatings,a-Al2O3 and Al2TiO5 are main phases. If condition is proper, a lot of superlattic ordered phase is precipitated inside a-Al2O3 grain,and ordered phase is able to inhibit the appearance of surface cracks. The width of crack is increased with the rise of laser beam scanning velocity and also with the output power. |
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| Keywords: | Ceramic coating laser remelting microstructure |
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