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张镇华,冀国俊.溶胶-凝胶ZrO2纳米薄膜在不同NaCl水溶液中的电化学腐蚀和摩擦学性能研究[J].稀有金属材料与工程(英文),2020,49(11):3748~3760.[Zhenhua Zhang and Guojun Ji.Electrochemical corrosion and tribocorrosion properties of sol-gel ZrO2 nanofilms coated on stainless steel in the diverse NaCl aqueous solutions[J].Rare Metal Materials and Engineering,2020,49(11):3748~3760.]
Electrochemical corrosion and tribocorrosion properties of sol-gel ZrO2 nanofilms coated on stainless steel in the diverse NaCl aqueous solutions
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Received:October 31, 2019  Revised:November 26, 2019
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Key words: ZrO2 films  NaCl solution  electrochemical corrosion  tribocorrosion
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Zhenhua Zhang and Guojun Ji  
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Abstract:
      ZrO2 films were deposited on 304 stainless-steel substrates by a sol-gel spin coating method. Electrochemical testing technology and a to-and-fro wear test apparatus were used to study the electrochemical corrosion and tribocorrosion properties of the films in different NaCl solutions. According to the results, the coated specimens were better than the bare substrate regarding resistance to corrosion and tribocorrosion. In the NaCl solutions, increasing either the solution temperature or concentration decreased the protective effects of the ZrO2 films; study of the solution temperature factor showed that serious pitting corrosion and obvious cracking occurred on the surface of the coated specimens; study of the solution concentration factor showed pitting corrosion on the sample surfaces. Regarding the tribocorrosion of the coated specimens, as the NaCl concentration increased from 2% to 6.5%, the abrasive wear was more obvious, and the corrosive wear was aggravated.