Effect of Heat Treatment Temperature on Properties of SiO₂-ZrO₂-Al₂O₃-Cr₂O₃ Coatings on Stainless Steel Substrate

Abstract:

The SiO2-ZrO2-Al2O3-Cr2O3 film is coated on the surface of stainless steel using analytical reagent TEOS, ZrOCl2·8H2O, Al(NO3)3·9H2O and Cr(NO3)3·9H2O as precursor and basing on mole ratio to calculate through Sol-gel method. The phase transformation behavior，erosion resistance，thermal shock resistance and abrasion resistance of ceramic coating by different heat treatment are studied. The results show that: 1)The SiO2-ZrO2-Al2O3-Cr2O3 gel coatings has non-crystalline structure after the treatment at 700°C and 800°C. New substance is not created below 700°C 2) The stainless steel substrate with ceramic coating has a higher erosion resistance at high temperature (700°Cand 800°C)than that without coating.3) Thermal shock resistance of the samples treated in 700°C is the best which has reached within 17-21cycles (900°C, air cooling). 4) The stainless steel substrate with ceramic coating has a higher abrasion resistance than that without coating. The samples treated at 700°Cand 800°C have the best abrasion resistance.

• Periodical: Advanced Materials Research (Volumes 538-541)
• Pages: 359-362
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.538-541.359
• Online since: June 2012
• Authors: Qing Mei Jia, Yong Hong Tang, Ke Nan Meng
• Keywords: Heat Treatment Temperature, Properties of Ceramic Coating, SiO₂-ZrO₂-Al₂O₃-Cr₂O₃ Film, Stainless Steel (SS)

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