| 喷距对低温高速火焰喷涂Ti涂层的影响 |
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| 引用本文： | 陈建强,刘敏,邓春明,邓畅光. 喷距对低温高速火焰喷涂Ti涂层的影响[J]. 稀有金属, 2011, 35(6). DOI: 10.3969/j.issn.0258-7076.2011.06.008 |
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| 作者姓名： | 陈建强 刘敏 邓春明 邓畅光 |
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| 作者单位： | 1. 广东工业大学材料与能源学院,广东广州510081;广州有色金属研究院材料表面所,广东广州510650
2. 广州有色金属研究院材料表面所,广东广州,510650 |
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| 基金项目： | 广东省自然科学基金资助(10151065101000002)项目 |
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| 摘 要： | 采用新研发的低温高速火焰喷涂在A3钢基体表面沉积了钛涂层,对涂层的显微结构和相组成进行了表征,探讨了喷距对涂层结构和相组成的影响.结果显示,涂层表面均具有较高的粗糙度,涂层的剖面分析表明涂层包含近表面疏松结构区和内部致密区.近表面疏松结构区不仅涂层的孔隙高,孔径大,而且存在较多裂纹；除80mm喷距,其他3种喷距下涂层的内部致密区仍有较多大孔隙,80mm喷距下可以获得涂层内部致密区的致密度达到99％,但涂层中观察到灰色的氧化物界面.XRD分析表明,钛涂层中含有一定量钛的氧化物相.利用粒子在焰流中的速度特征,发现粒子的速度随喷距的降低而提高了,分析认为高速粒子对前面沉积涂层的喷丸效应是获得致密钛涂层的关键因素.
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| 关 键 词： | 钛涂层 高压高速火焰喷涂 喷距 孔隙 |
Effect of Spraying Distance on Ti Coatings Prepared by Low Temperature High Velocity Oxygen Fuel |
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| Chen Jianqiang,Liu Min,Deng Chunming,Deng Changguang. Effect of Spraying Distance on Ti Coatings Prepared by Low Temperature High Velocity Oxygen Fuel[J]. Chinese Journal of Rare Metals, 2011, 35(6). DOI: 10.3969/j.issn.0258-7076.2011.06.008 |
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| Authors: | Chen Jianqiang Liu Min Deng Chunming Deng Changguang |
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| Affiliation: | Chen Jianqiang1,2,Liu Min2,Deng Chunming2,Deng Changguang2 (1.College of Materials and Energy,Guangdong University of Technology,Guangzhou 510081,China,2.Institute of Materials Surface,Guangzhou Research Institute of Non-Ferrous Metals,Guangzhou 510651,China) |
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| Abstract: | Ti coatings were deposited on A3 steel by low temperature high velocity oxygen fuel spraying,which was a newly developed process.The microstructure and phase composition for Ti coatings were characterized and the effects of spraying distance on the microstructure and phase composition for Ti coatings were discussed.The results revealed that there was very high surface roughness on the Ti coatings.The Ti coatings were comprised by a loose subsurface area and a dense inner coating area.High porosity with some... |
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| Keywords: | Ti coating low temperature high velocity oxygen fuel spraying distance pore |
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