| NiCoCrAIY和NiCr粘接层抗热震性能的对比 |
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| 引用本文： | 刘英坤,邓畅光,陈和兴.NiCoCrAIY和NiCr粘接层抗热震性能的对比[J].材料保护,2011(6):60-61,8,9. |
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| 作者姓名： | 刘英坤 邓畅光 陈和兴 |
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| 作者单位： | 广州有色金属研究院 |
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| 摘 要： | 为了提高GH907合金的抗高温和抗热腐蚀性能,利用低压等离子喷涂技术在其表面制备了NiCoCrAlY 粘接层和NiCr粘接层,并对2种粘接层的抗热震性能进行了研究.结果表明,NiCoCrAIY粘接层和NiCr粘接层经过10次热震后,表面都有裂纹产生,且NiCoCrAlY粘接层的裂纹较NiCr粘接层的粗大;在横截面上Ni...
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| 关 键 词： | 低压等离子喷涂 NiCoCrAlY粘接层 NiCr粘接层 GH907合金 抗热震性能 |
Comparison of Thermal Shock Resistance of NlCoCrAlY and NlCr Coatings |
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| Liu Ying-kun,DENG Chang-guang,CHEN He-xing.Comparison of Thermal Shock Resistance of NlCoCrAlY and NlCr Coatings[J].Journal of Materials Protection,2011(6):60-61,8,9. |
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| Authors: | Liu Ying-kun DENG Chang-guang CHEN He-xing |
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| Affiliation: | (Guang-zhou Research Institute of Non-Ferrous Metals,Guangzhou 510651,China) |
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| Abstract: | NiCoCrAlY and NiCr coatings were prepared on the surface of GH907 alloy by low pressure plasma spraying.The thermal shock resistance of the two types of coatings was comparatively evaluated.It was found that after 10 cycles of thermal shock,cracks were generated on the surface of both coatings,and the cracks of NiCoCrAlY coating were bigger than those of NiCr coating.Besides,only vertical cracks along the sprayed grains were generated on the cross-section of NiCr coating,but lateral cracks propagating along the interface and vertical cracks were observed on the cross-section of NiCoCrAlY coating.NiCr coating had better thermal shock resistance than NiCoCrAlY coating. |
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| Keywords: | low pressure plasma spraying NiCoCrAlY coating NiCr coating GH907 alloy thermal shock resistance |
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