Corrosion Resistance of HEP Jet Coating of Multi-Aluminum Bronze Alloy in 3.5%NaCl Solution

Wang Zhiping; Hui Xiaoli; Lu Yang; Yang Xiaotian; Wang Yubo; Liu Junzhao

doi:10.15980/j.tzzz.2012.02.026

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Corrosion Resistance of HEP Jet Coating of Multi-Aluminum Bronze Alloy in 3.5%NaCl Solution
Vol. 32, Issue 2, Pages: 172-175(2012)
Published： 2012 ，
DOI： 10.15980/j.tzzz.2012.02.026

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[1]王智平,惠晓利,路阳,杨效田,王玉波,刘俊钊.HEPJet多元铝青铜合金涂层在3.5%的NaCl溶液中的腐蚀性能[J].特种铸造及有色合金,2012,32(02):172-175.

Wang Zhiping, Hui Xiaoli, Lu Yang, et al. Corrosion Resistance of HEP Jet Coating of Multi-Aluminum Bronze Alloy in 3.5%NaCl Solution. [J]. Special Casting & Nonferrous Alloys 32(2):172-175(2012)
[1]王智平,惠晓利,路阳,杨效田,王玉波,刘俊钊.HEPJet多元铝青铜合金涂层在3.5%的NaCl溶液中的腐蚀性能[J].特种铸造及有色合金,2012,32(02):172-175. DOI： 10.15980/j.tzzz.2012.02.026.

Wang Zhiping, Hui Xiaoli, Lu Yang, et al. Corrosion Resistance of HEP Jet Coating of Multi-Aluminum Bronze Alloy in 3.5%NaCl Solution. [J]. Special Casting & Nonferrous Alloys 32(2):172-175(2012) DOI： 10.15980/j.tzzz.2012.02.026.

摘要

采用超音速等离子喷涂（HEPJet）技术将新型多元铝青铜合金粉体喷涂在45号钢基体上。通过失重法、极化曲线法、X射线衍射分析（XRD）、扫描电镜（SEM）、能谱（EDS）和电子探针（EPMA-1600）等方法研究多元铝青铜合金涂层在3.5%的NaCl溶液中的腐蚀性能。结果表明

在3.5%的NaCl溶液中

多元铝青铜合金涂层具有良好的耐蚀性能

该涂层的腐蚀速率为0.0636mm/a。腐蚀后试样表面Al元素的含量明显下降

Cu的含量明显增加

可见

涂层发生的主要是脱铝腐蚀。

Abstract

The multi-aluminum bronze powder was coated onto 45 steel by HEPJet. The corrosion resistance of HEPJet coating of the multi-aluminum bronze alloy in 3.5% NaCl solution was examined by using the weight-loss method

polarization curve method

X-ray diffraction（XRD）

scanning electron microscope（SEM）

energy dispersive spectrum （EDS） and electron probe micro-analyzer （EPMA）. The results show that the HEPJet coating of multi-aluminum bronze exhibits desirable corrosion resistance in 3.5% NaCl solution

where corrosion rate of the coating reaches 0.063 6 mm/a. After corrosion

the Al content in the surface layer of the samples is decreased greatly

while the Cu content is increased

showing the multi-aluminum bronze coating suffering dealuminization corrosion.