东北大学学报（自然科学版）

东北大学学报(自然科学版) ›› 2010, Vol. 31 ›› Issue (3): 411-414.DOI: -

• 论著 • 上一篇    下一篇

Ti60合金电弧离子镀Ti-Al-Cr防护涂层的抗循环热冲击性能

闫伟;孙凤久;刘建荣;刘杰;   

  1. 东北大学理学院;中国科学院金属研究所钛合金研究部;中航工业沈阳黎明航空发动机(集团)有限责任公司;
  • 收稿日期:2013-06-20 修回日期:2013-06-20 发布日期:2013-06-20
  • 通讯作者: -
  • 作者简介:-
  • 基金资助:
    国家高技术研究发展计划项目(2007AA03A224)

Cycling thermal shock resistance of Ti-Al-Cr coating deposited on Ti60 alloy by arc ion plating

Yan, Wei (1); Sun, Feng-Jiu (1); Liu, Jian-Rong (2); Liu, Jie (3)   

  1. (1) School of Sciences, Northeastern University, Shenyang 110004, China; (2) Division of Titanium Alloys, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China; (3) AVIC Shenyang Liming Aero-engine(Group) Corporation LTD, Shenyang 110043, China
  • Received:2013-06-20 Revised:2013-06-20 Published:2013-06-20
  • Contact: Yan, W.
  • About author:-
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摘要： 利用电弧离子镀技术在Ti60合金表面制备了Ti-48Al-5Cr和Ti-48Al-12Cr(原子分数,%)两种涂层.研究了Ti60及涂层样品在高温(900℃和950℃)和室温(强制水冷)之间的抗循环热冲击能力.分析了热冲击过程中样品的质量变化、相组成、表面及截面形貌的显微照片.结果显示Ti-48Al-12Cr涂层具有较好的抗循环热冲击性能,能有效地保护Ti60基体.而Ti-48Al-5Cr涂层不能有效地保护基体,这是因为Cr元素含量不同导致氧化机制的差异.热冲击实验加速了氧化物的剥落和破坏,因此加速了内氧化的发生和裂纹的萌生、扩展.

关键词: 材料失效与保护, 钛合金, Ti-Al-Cr涂层, 热冲击

Abstract: The Ti-48Al-5Cr and Ti-48Al-12Cr(in at%) coatings were both deposited on Ti60 alloy surface via arc ion plating process. The cycling thermal shock resistances of uncoated specimens and that coated with Ti-Al-Cr coating were investigated at the temperature between 900/950°C and room temperature by forced water cooling. The mass change, phase composition and surface/cross-section morphology of specimens were all discussed. The results showed the Ti-48Al-12Cr coating exhibited high resistance of thermal shock, thus protecting efficiently the Ti60 alloy as substrate. However the Ti-48Al-5Cr coating cannot protect the substrate efficiently because of the less Cr content which results in different oxidation mechanism. The cycling test results revealed that the shock will expedite the spalling and break-up of oxides, thus expediting the occurrence of internal oxidation and the initiation/propagation of cracks.

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