古一,夏长清,邱冠周.含纳米Ni粉高温陶瓷涂层/GH202合金界面反应的研究[J].表面技术,2010,39(1):9-11.
GU Yi,XIA Chang-qing,QIU Guan-zhou.The Study on Interface Reaction between High-temperature Ceramic Coating Containing Nano-size Nickel Powder and Super Alloy GH202[J].Surface Technology,2010,39(1):9-11 |
| 含纳米Ni粉高温陶瓷涂层/GH202合金界面反应的研究 |
| The Study on Interface Reaction between High-temperature Ceramic Coating Containing Nano-size Nickel Powder and Super Alloy GH202 |
| 投稿时间：2009-10-13 修订日期：2010-02-10 |
| DOI： |
| 中文关键词: 纳米镍粉 陶瓷涂层 真空退火 组织 |
| 英文关键词:Nano-size nickel powders Ceramic coating Vacuum anneal Microstructure evolvement |
| 基金项目:中南大学博士后基金资助项目 |
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| 中文摘要: |
| 涂层失效一般是由涂层与基底界面的显微组织演变引起的,对高温下含纳米Ni粉的陶瓷涂层与合金组织的演变进行了研究,结果表明:陶瓷涂层/合金试样在900℃下进行真空扩散退火后,合金基底内在靠近界面的附近依次出现了Al2O3的晶间氧化物和针状TiN氮化物析出层;在长时间扩散过程中,纳米镍粉逐渐聚集长大,与合金基底在界面处融为一体,形成涂层与基体的咬合,使涂层与基体的结合趋向于冶金结合,具有抑制涂层失效的作用。 |
| 英文摘要: |
| The failure of coatingsis mainly caused by the behavior of microstructure oninterface of the coating and substrate.The behavior of microstructure on interface of high-temperature ceramic coating containing nano-size nickel powder and super alloy GH202 during vacuum diffusion was studied. The results show that Al2O3oxide layer and Ti, N compound exist respectively in the alloy substrate close to interface.During long time diffusion,nano-size nickel powders gradually congregate and grow up, and the confluent interface appeares, which shows that the nano-size nickel powders have the effect of restraining the coating from failure. |
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