镍基喷焊层的抗气蚀性能研究

中国腐蚀与防护学报

2006, Vol. 26

Issue (4): 197-201

研究报告

本期目录 | 过刊浏览

镍基喷焊层的抗气蚀性能研究

张萍;吴玉萍;林萍华;刘冠国

河海大学材料科学与工程系

Cavitation Erosion Resistance of Spray Welding Nickel - Based Coatings

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河海大学材料科学与工程系

全文: PDF(342 KB)

摘要: 用火焰喷涂法在低碳不锈钢表面制备镍基合金涂层.借助光学显微镜、X射线衍射仪、显微硬度计、磁致伸缩气蚀仪等设备研究涂层的组织、结构和性能，并利用扫描电子显微镜对气蚀形貌进行了跟踪观察.结果表明：Ni60喷焊层组织较细，显微硬度远远高于Ni25喷焊层，Ni60喷焊层抗气蚀性能和Ni25喷焊层相比有明显提高.

关键词 ：气蚀, 喷焊, 显微组织, 机理

Abstract：Ni-based alloy coatings were made by spray welding on surface of the mild steel(1Cr18Ni9Ti).The microstructure and performance of the coatings were investigated by optical microscope，X-ray diffraction，Vickers hardness，scanning electron microscope(SEM) and vibratory cavitation apparatus.The results show that the Ni60 coating has much higher hardness and finer structure than Ni25 coating and 1Cr18Ni9Ti.In addition,the vibratory cavitation result s show that the mass loss increases with increasing test time.These results indicate that the cavitation erosion resistance of Ni60 coating is much better than that of the Ni25 coating,due to higher hardness and finer structure.Furthermore,the cavitation erosion mechanisms were studied also in the end of this paper.The results showed that higher hardness and finer structure can increase the vibratory cavitation resistance of coatings.

Key words： cavitation erosion spray welding microstructure mechanism

收稿日期: 2005-06-10

ZTFLH:

TB31

通讯作者: 张萍 E-mail: pingzh@mailsvr.hhu.edu.cn

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引用本文:

张萍; 吴玉萍; 林萍华; 刘冠国 . 镍基喷焊层的抗气蚀性能研究[J]. 中国腐蚀与防护学报, 2006, 26(4): 197-201 .
. Cavitation Erosion Resistance of Spray Welding Nickel - Based Coatings. J Chin Soc Corr Pro, 2006, 26(4): 197-201 .

链接本文:

https://www.jcscp.org/CN/ 或 https://www.jcscp.org/CN/Y2006/V26/I4/197

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