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中国腐蚀与防护学报  2009, Vol. 29 Issue (5): 344-348    
  研究报告 本期目录 | 过刊浏览 |
SUS304ss包埋粉末渗铝的耐蚀性能
罗宏
四川理工学院材料腐蚀与防护四川省高校重点实验室 自贡 643000
CORROSION RESISTANCE OF PACK ALUMINIZED SUS304 STAINLESS STEEL
LUO Hong
Key Laboratory of Materials Corrosion and Protection of Sichuan Colleges and Universities;Sichuan University of Science & Engineering; Zigong 643000
全文: PDF(1181 KB)  
摘要: 

展开了SUS304ss及其渗铝后在0.33 mol/L FeCl3+0.05 mol/L HCl 溶液中的耐蚀性实验、1000 ℃下的抗高温氧化实验及表面沉积 碱金属氯化物和硫酸盐在500 ℃下的耐蚀性实验,用失重法和电 化学方法等综合评定了SUS304ss渗铝后的耐蚀性。研究表明:渗铝SUS304ss表面渗铝层结构致密,厚度为50 μm;在 0.33 mol/L FeCl3+0.05 mol/L  HCl溶液中SUS304ss发生了严重孔蚀,渗铝后表面发生轻微孔蚀;渗铝SUS304ss在1000 ℃下加热,表面和截面形貌完好,耐高温氧化性提高了约5倍;在500 ℃下表面沉积盐碱混合物,渗铝SUS304ss耐腐蚀性约提高20倍;渗铝后SUS304ss的腐蚀电位大于未渗铝钢,耐蚀性提高。

关键词 SUS304不锈钢;粉末包埋渗铝;耐蚀性;高温氧化;电化学方法    
Abstract

In order to research the corrosion resistance of SUS304 stainless steels with pack aluminized process, the corrosion resistance tests in 0.33 mol/L FeCl3+0.05 mol/L HCl, the oxidation tests at 1000 ℃, and the corrosion resistance tests in deposition of alkali-chloride and sulphate at 500 ℃ were conducted. The corrosion resistance was comprehensively evaluated by weight loss method and electrochemical tests etc. The experimental results indicated that aluminized layer of SUS304ss was dense, and the thickness was 50 μm; the pitting corrosion resistance of aluminized SUS304ss was better than that of unaluminized one; the oxidation properties of aluminized SUS304ss increased 5 times at 1000 ℃; the corrosion resistance of aluminized SUS304 in deposition of alkali-chloride and sulphate increased about 20 times at 500 ℃; the corrosion potential of aluminized SUS304 was higher than that of unaluminized one, which had better corrosion resistance.

Key wordsSUS304ss    pack aluminized process    corrosion resistance    high temperature oxidation    electrochemical test
收稿日期: 2008-04-11     
基金资助:

四川省教育厅重点项目(2006A168)资助

通讯作者: 罗宏     E-mail: luohong28@163.com
作者简介: 罗宏,1970年生,男,副教授,研究方向为耐蚀金属材料和表面处理工艺

引用本文:

罗宏. SUS304ss包埋粉末渗铝的耐蚀性能[J]. 中国腐蚀与防护学报, 2009, 29(5): 344-348.
LUO Hong. CORROSION RESISTANCE OF PACK ALUMINIZED SUS304 STAINLESS STEEL. J Chin Soc Corr Pro, 2009, 29(5): 344-348.

链接本文:

https://www.jcscp.org/CN/      或      https://www.jcscp.org/CN/Y2009/V29/I5/344

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