| Ru过渡层对NiCoCrAlY涂层与DD6单晶高温合金界面扩散行为的影响 |
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| 引用本文： | 王娟,彭徽,陈国忠,郭洪波,宫声凯.Ru过渡层对NiCoCrAlY涂层与DD6单晶高温合金界面扩散行为的影响[J].航空学报,2011,32(4):758-764. |
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| 作者姓名： | 王娟 彭徽 陈国忠 郭洪波 宫声凯 |
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| 作者单位： | 1. 北京航空航天大学,材料科学与工程学院,北京,100191
2. 中航工业沈阳黎明航空发动机(集团)有限责任公司,辽宁沈阳,110043 |
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| 基金项目： | 国家自然科学基金，国家"973"计划，高等学校博士学科点专项科研基金 |
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| 摘 要： | 针对第二代单晶高温合金DD6开展了一种具有阻扩散功能的金属防护涂层的探索性研究.采用电镀和电子束物理气相沉积(EB-PVD)方法在DD6单晶高温合金上制备了NiCoCrAlY/Ru双层结构涂层,同时采用EB-PVD在单晶合金上沉积了单层NiCoCrAlY涂层.研究结果表明,在1 050℃大气环境中扩散处理300 h后,...
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| 关 键 词： | 电子束物理气相沉积 单晶高温合金 涂层 二次反应区 拓扑密堆相 互扩散 |
| 收稿时间： | 2010-07-24; |
Impact of Ru Buffer Layer on Diffusion Behavior Between NiCoCrAlY and Single Crystal Superalloy DD6 |
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| WANG Juan,PENG Hui,CHEN Guozhong,GUO Hongbo,GONG Shengkai.Impact of Ru Buffer Layer on Diffusion Behavior Between NiCoCrAlY and Single Crystal Superalloy DD6[J].Acta Aeronautica et Astronautica Sinica,2011,32(4):758-764. |
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| Authors: | WANG Juan PENG Hui CHEN Guozhong GUO Hongbo GONG Shengkai |
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| Institution: | 1.School of Materials Science and Engineering,Beihang University,Beijing 100191,China 2.AVIC Shenyang Liming Aero-engine(Group)Corporation Ltd.,Shenyang 110043,China |
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| Abstract: | In this paper, a metallic protective coating is investigated as a diffusion barrier on the second generation single crystal superalloy DD6. A double layer of NiCoCrAlY/Ru coating is prepared by electroplating and electron beam physical vapor deposition (EB-PVD) on a sample of single crystal superalloy DD6. Also, a single NiCoCrAlY coating is deposited onto the single crystal superalloy by EB-PVD. The results show that an interdiffusion zone (IDZ) of ~55 μm and a secondary reaction zone (SRZ) of ~25 μm are formed in the superalloy after 300 h heat-treatment at 1 050 ℃ in atmospheric environment. Compared with the single NiCoCrAlY coating, the NiCoCrAlY/Ru coating effectively suppressed the formation of SRZ in the superalloy. There are only tiny amounts of topologically close-packed phases (TCP) precipitated in the superalloy. |
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| Keywords: | electron beam physical vapor deposition single crystal superalloy coating secondary reaction zone topologically close-packed phase interdiffusion |
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