Al_2O_3 Coating Prepared by Sol-Gel Process and its High-temperature Oxidation Protective Performance for Ti6Al4V-based Alloy AITranslate
Abstract AITranslate
Al2O3 coating was prepared on Ti6Al4V-based alloy by sol-gel process with Al（OC3H7）3（aluminum isopropoxide） as the precursor.The results from SEM and XRD show that the resultant coating has uniform and crack-free surface,and it is mainly composed of amorphous Al2O3.The impact of Al2O3 coating was studied on the isothermal oxidation behavior of Ti6Al4V-based alloy at 600 ℃ and 700 ℃.The results show that 0.8 μm thick Al2O3 coating has the optimum high-temperature oxidation resistance.The parabola oxidation rate constants of the coated sample and the blank sample are 7.60×10-11 and 1.46×10-10 g2/（cm4·s）,respectively for 20 h isothermal oxidation at 700 ℃.The TiO2 content of the oxide skin on the coated sample is obviously less than that on the blank sample.Al2O3 coating can effectively protect the alloy from spalling and cracking.The thickness of the oxide skin on the coated sample is only half of that on the blank sample.
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Basic Information:
DOI：
Chinese Library Classification Number:TG178[金属学及工艺—金属表面处理]
Citation Information:
Al2O3 coating was prepared on Ti6Al4V-based alloy by sol-gel process with Al（OC3H7）3（aluminum isopropoxide） as the precursor.The results from SEM and XRD show that the resultant coating has uniform and crack-free surface,and it is mainly composed of amorphous Al2O3.The impact of Al2O3 coating was studied on the isothermal oxidation behavior of Ti6Al4V-based alloy at 600 ℃ and 700 ℃.The results show that 0.8 μm thick Al2O3 coating has the optimum high-temperature oxidation resistance.The parabola oxidation rate constants of the coated sample and the blank sample are 7.60×10-11 and 1.46×10-10 g2/（cm4·s）,respectively for 20 h isothermal oxidation at 700 ℃.The TiO2 content of the oxide skin on the coated sample is obviously less than that on the blank sample.Al2O3 coating can effectively protect the alloy from spalling and cracking.The thickness of the oxide skin on the coated sample is only half of that on the blank sample.
quote
| GB/T 7714-2015 | [1] REN Bao-yi, GAO Yan-hui, SHU Yan, et al. Al_2O_3 Coating Prepared by Sol-Gel Process and its High-temperature Oxidation Protective Performance for Ti6Al4V-based Alloy[J]. Rare Metals and Cemented Carbides, 2010(4): 24-27. |
| MLA | [1] REN Bao-yi, et al., "Al_2O_3 Coating Prepared by Sol-Gel Process and its High-temperature Oxidation Protective Performance for Ti6Al4V-based Alloy." Rare Metals and Cemented Carbides, no. 4, 2010, pp. 24-27. |
| APA | [1] REN Bao-yi, GAO Yan-hui, SHU Yan, ZHANG Xue-jun, & FENG Nai-xiang. (2010). Al_2O_3 Coating Prepared by Sol-Gel Process and its High-temperature Oxidation Protective Performance for Ti6Al4V-based Alloy. Rare Metals and Cemented Carbides(4), 24-27. |
| IEEE | [1] REN Bao-yi, GAO Yan-hui, SHU Yan, ZHANG Xue-jun, and FENG Nai-xiang, "Al_2O_3 Coating Prepared by Sol-Gel Process and its High-temperature Oxidation Protective Performance for Ti6Al4V-based Alloy," Rare Metals and Cemented Carbides, no. 4, pp. 24-27, 2010. keywords: {Al2O3 coating;sol-gel process;Ti6Al4V-based alloy;high-temperature oxidation resistance} |