长沙理工大学学报(自然科学版)
汽轮机钛合金末级叶片抗水蚀涂层的研究进展
作者:
作者单位:

(长沙理工大学 能源与动力工程学院,湖南 长沙 410114)

作者简介:

李聪(1985—) (ORCID: 0000?0001?5407?9488),男,教授,主要从事动力设备关键部件材料特性及性能评价的研究。E?mail:liconghntu@csust.edu.cn

通讯作者:

李聪(1985—) (ORCID: 0000?0001?5407?9488),男,教授,主要从事动力设备关键部件材料特性及性能评价的研究。E?mail:liconghntu@csust.edu.cn

中图分类号:

TK265

基金项目:

湖南省自然科学基金资助项目(2022JJ30597);国家自然科学基金资助项目(51775055)


Research status of anti‑water erosion coatings for the final stage titanium blade in steam turbines
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(School of Energy and Power Engineering, Changsha University of Science and Technology, Changsha 410114, China)

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    摘要:

    水蚀是汽轮机钛合金末级叶片损伤的主要方式之一,极易引起低压转子安全事故。在汽轮机钛合金末级叶片表面制备抗水蚀涂层,是提高其抗水蚀能力,保证机组安全可靠运行的有效措施。本文介绍了目前常用的钛合金叶片表面抗水蚀涂层的制备工艺,阐述了电火花强化、热喷涂、激光熔覆和激光表面合金化等技术的研究现状,并对其进行了总结与展望,以期为汽轮机钛合金末级叶片制备硬度高、耐磨性好、结合牢固的抗水蚀涂层提供参考。

    Abstract:

    Water erosion damage (WED) is one of the main problems that cause damage to the last stage titanium alloy blade of steam turbine. It is extremely easy to cause the proportion of failure accidents of low?pressure rotors by WED. The preparation of water erosion resistant coating on the surface of turbine titanium alloy last stage blade is an effective measure to improve its anti?erosion ability and ensure the safe and reliable operation of the unit. In this paper, the preparation processes of the commonly used anti?erosion coatings on the surface of titanium alloy blades are introduced, which expounds the research status of the technologies such as electric spark strengthening, thermal spraying, laser cladding and laser surface alloying. The summary and prospect of these technologies are presented, so as to provide some references for the preparation of anti?erosion coatings with high hardness, good wear resistance and firm bonding on the surface of titanium alloy last?stage blades of steam turbines.

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李聪,聂冰悦,任延杰,等.汽轮机钛合金末级叶片抗水蚀涂层的研究进展[J].长沙理工大学学报(自然科学版),2022,19(4):32-46.
LI Cong, NIE Bingyue, REN Yanjie, et al. Research status of anti‑water erosion coatings for the final stage titanium blade in steam turbines[J]. Journal of Changsha University of Science & Technology (Natural Science),2022,19(4):32-46.

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  • 在线发布日期: 2023-01-16
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