| INFLUENCE OF DEFECTS ON PROPERTIES OF SPUTTERED CoCrAIY COATINGS |
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| 引用本文： | WANG Fuhui,LOU Hanyi,WU Weitao Corrosion Science Laboratory,Institute of Corrosion and Protection of Metals,Academia Sinica,Shenyang,China research assistant,Institute of Corrosion and Protection of Metats,Academia Sinica,Shenyang 110015,China. INFLUENCE OF DEFECTS ON PROPERTIES OF SPUTTERED CoCrAIY COATINGS[J]. 金属学报(英文版), 1993, 6(8): 141-146 |
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| 作者姓名： | WANG Fuhui LOU Hanyi WU Weitao Corrosion Science Laboratory Institute of Corrosion and Protection of Metals Academia Sinica Shenyang China research assistant Institute of Corrosion and Protection of Metats Academia Sinica Shenyang 110015 China |
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| 作者单位： | WANG Fuhui;LOU Hanyi;WU Weitao Corrosion Science Laboratory，Institute of Corrosion and Protection of Metals，Academia Sinica，Shenyang，China research assistant，Institute of Corrosion and Protection of Metats，Academia Sinica，Shenyang 110015，China |
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| 摘 要： | The influence of defects on the oxidation, hot corrosion and thermal shock properties ofsputtered Co-30Cr-6Al-0.5Y coatings was investigated.The results indicated that thenodular defects reduced the properties of the coatings.For the oxidation,the nodulardefects resulted in the severe internal oxidation of aluminium,as a result,the pure alumina scale could not form at very high temperature such as at 1 100℃.For the hotcorrosion,the nodular defects served as the short-path for the diffusion of sulfur into thecoating and the substrate,and caused the sulfidation,of the specimen.Moreover,thenodular defects became the crack source during the thermal shock test and decreased thethermal shock resistance.
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| 收稿时间： | 1993-08-11 |
| 修稿时间： | 1993-08-11 |
INFLUENCE OF DEFECTS ON PROPERTIES OF SPUTTERED CoCrAIY COATINGS |
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| WANG Fuhui,LOU Hanyi,WU Weitao Corrosion Science Laboratory. INFLUENCE OF DEFECTS ON PROPERTIES OF SPUTTERED CoCrAIY COATINGS[J]. Acta Metallurgica Sinica(English Letters), 1993, 6(8): 141-146 |
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| Authors: | WANG Fuhui LOU Hanyi WU Weitao Corrosion Science Laboratory |
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| Affiliation: | WANG Fuhui,LOU Hanyi,WU Weitao Corrosion Science Laboratory,Institute of Corrosion and Protection of Metals,Academia Sinica,Shenyang,China research assistant,Institute of Corrosion and Protection of Metats,Academia Sinica,Shenyang,China |
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| Abstract: | The influence of defects on the oxidation, hot corrosion and thermal shock properties of sputtered Co-30Cr-6Al-0.5Y coatings was investigated.The results indicated that the nodular defects reduced the properties of the coatings.For the oxidation,the nodular defects resulted in the severe internal oxidation of aluminium,as a result,the pure alu mina scale could not form at very high temperature such as at 1 100℃.For the hot corrosion,the nodular defects served as the short-path for the diffusion of sulfur into the coating and the substrate,and caused the sulfidation,of the specimen.Moreover,the nodular defects became the crack source during the thermal shock test and decreased the thermal shock resistance. |
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| Keywords: | CoCrAlY coating defect oxidation hot corrosion thermal shock |
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