引用本文:曹江， 李春福， 傅斌友， 史萌， 汪瑞军.微弧离子沉积阻燃涂层对TC11钛合金力学性能的影响[J].中国表面工程,2014,27(1):51~55
CAO Jiang, LI Chunfu, FU Binyou, SHI Meng, WANG Ruijun.Effect of Fire-resistant Coating Deposited by Micro-arc Ion Surface Modification on Mechanical Properties of TC11 Alloy[J].China Surface Engineering,2014,27(1):51~55
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微弧离子沉积阻燃涂层对TC11钛合金力学性能的影响
曹江， 李春福， 傅斌友， 史萌， 汪瑞军1,2,3
1. 西南石油大学 油气藏地质与开发工程国家重点实验室， 成都 610500;2. 中国人民解放军驻四二〇厂军事代表室， 成都 610503;3. 北京金轮坤天特种机械有限公司， 北京 100083
摘要:
为使阻燃涂层早日在我国航空发动机上得到应用，在提高涂层阻燃性能的同时，研究涂层对基体力学性能的影响十分必要。文中采用微弧离子表面改性技术在TC11钛合金基体上制备阻燃涂层，研究阻燃涂层对钛合金拉伸性能、压缩性能、蠕变性能及裂纹扩展速率的影响。结果表明，采用微弧离子表面改性技术在TC11基体上制备的阻燃涂层主要由TiC2、W2C及Ti组成，涂层结构致密，与基体结合良好。涂层试样规定非比例延伸强度、抗拉强度以及断面收缩率有轻微降低，降低幅值约为基体抗拉强度5%左右；断后延长率基本无变化，弹性模量随测试温度提高逐步下降，试样抗压强度增大，400 ℃高温蠕变性能变好，常温裂纹扩展速率降低。综合分析表明，在钛合金基体上制备阻燃涂层后，试样整体力学性能变化幅值小于5%，符合航空发动机部件强度设计要求。
关键词:  微弧离子  表面改性  阻燃涂层  TC11钛合金  力学性能
DOI：10.3969/j.issn.1007-9289.2014.01.008
分类号:
基金项目:
Effect of Fire-resistant Coating Deposited by Micro-arc Ion Surface Modification on Mechanical Properties of TC11 Alloy
CAO Jiang, LI Chunfu, FU Binyou, SHI Meng, WANG Ruijun1,2,3
1. State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu 610500;2. PLA Military Representative Office Stationed 420 Factory, Chengdu 610503;3. Beijing Golden Wheel Special Machine Co. Ltd., Beijing 100083
Abstract:
To make an early application of fireresistant coatings in aeroengine, study the effect of coating on substrate mechanics performance is very necessary. In this paper, fireresistant coatings were deposited on TC11 titanium alloys through microarc ion surface modification technology, the effects of the coating on tensile, compression, creep deformation and crack propagation properties have been investigated for the titanium alloy. It is found that the deposited fireresistant coating structure is dense, well bonded to the substrate, and the coating is composed mainly of TiC2, W2C and Ti. The specimens specity that disproportionate elongation strength, tensile strength and reduction of crosssection area are reduced about 5%, the fracture elongation hold the same level with the titanium alloy, Young's modulus gradually decreased with increasing test temperatures. Simultaneously, the compression strength increased, the creep deformation at 400℃ and the crack propagation properties at ambient temperature decreased. Namely, after depositing the fireresistant coating on the TC11 titanium alloy, the specimens mechanical properties variation amplitude is less than 5%, in accordance with the requirements of the design strength for aeroengine components.
Key words:  microarc ion  surface modification  fireresistant coating  TC11 titanium alloy  mechanical property
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