钛合金叶尖保护涂层的制备与表征
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摘要
通过对TC4钛合金基体进行表面活化处理,并采用复合电镀技术,在钛合金基体上制备了结合力良好的Ni-c BN复合镀层。研制的复合镀层能够减少航空发动机钛合金叶片叶尖的摩擦磨损、杜绝"钛火"事故。进行了镀层的高温摩擦磨损试验以及与镍基封严涂层的磨削试验,利用扫描电子显微镜(SEM)、X射线衍射(XRD)、X射线光电子能谱(XPS)等对涂层性能进行表征。结果表明:采用的钛合金基体表面活化处理技术,可保证复合镀层具有良好的结合力;同时,研制的Ni-c BN复合镀层对封严涂层具有良好的磨削能力和较低的摩擦系数,可以有效保护钛合金叶尖。
To solve the problem of friction and wear of titanium alloy blade in aero-engine compressor, we prepared a Ni-c BN composite coating on Ti-6 Al-4 V(TC4) substrate with improved bonding strength by composite electroplating combined with the surface activation of the titanium alloy processing. The friction and wear properties of the coating with the Ni-based abradable seal coating were studied by high temperature friction and wear test, and the results were compared with the TC4 rub with Ni-based abradable seal coating. The coating was characterized by scanning electron microscopy(SEM), X-ray diffraction(XRD), and X-ray photoelectron spectroscopy(XPS). The results show that a well bonded composite coating on the TC4 substrate is obtained after surface activation treatment of titanium alloy substrate. The deposited Ni-c BN composite coating exhibits a very strong grinding ability and low friction coefficient, which provides protection for the titanium alloy tips.
To solve the problem of friction and wear of titanium alloy blade in aero-engine compressor, we prepared a Ni-c BN composite coating on Ti-6 Al-4 V(TC4) substrate with improved bonding strength by composite electroplating combined with the surface activation of the titanium alloy processing. The friction and wear properties of the coating with the Ni-based abradable seal coating were studied by high temperature friction and wear test, and the results were compared with the TC4 rub with Ni-based abradable seal coating. The coating was characterized by scanning electron microscopy(SEM), X-ray diffraction(XRD), and X-ray photoelectron spectroscopy(XPS). The results show that a well bonded composite coating on the TC4 substrate is obtained after surface activation treatment of titanium alloy substrate. The deposited Ni-c BN composite coating exhibits a very strong grinding ability and low friction coefficient, which provides protection for the titanium alloy tips.
引文
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[6]Rajendran R.Engineering Failure Analysis[J],2012,26:355
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[8]Haines J,Leger J M,Bocquillon G.Annual Review of Materials Research[J],2001,31:1
[9]Wang Guangzu(王光祖).Super Hard Material Engineering(超硬材料工程)[J],2005,17(63):41
[10]Huang Boyun(黄伯云),Li Chenggong(李成功),Shi Likai(石力开)et al.China Materials Engineering Canon Vol 4(中国材料工程大典第四卷)[M].Beijing:Chemical Industry Press,2006:585
[11]Zhou Xiaowei,Shen Yifu.Applied Surface Science[J],2015,324:677
[12]Li Zhengxian(李争显),Liu Ruibin(刘瑞斌),Hua Yunfeng(华云峰)et al.Titanium Industry Progress(钛工业进展)[J],2014,31(1):1
[13]Wallace Turner,Barnoldswick.United States Patent,4 416 739[P],1983
[14]Jiang Haitao(姜海涛),Shao Zhongcai(邵忠财),Wei Shouqiang(魏守强).Plating and Finishing(电镀与精饰)[J],2010,32(10):15
[15]Du Lingzhong,Huang Chuanbing,Zhang Weigang et al.Surface and Coating Technology[J],2011,205(12):3722
[16]Faraoun H,Grosdidier T,Seichepine J L et al.Surface and Coatings Technology[J],2006,201(6):2303
[17]Yi Maozhong,He Jiawen,Huang Baiyun et al.Wear[J],1999,231(1):47
[18]Irean Paulin.Vacuum[J],2012,86(6):608
[19]Paulin Irena,Mandrino Djordje,Donik Crtomir et al.Materiali Technologije[J],2010,44(2):73
[20]Tu Zhenmi(屠振密),Li Ning(李宁),Zhu Yongming(朱永明).Application and Technology on Surface Treatment of Titanium and Titanium Alloys(钛及钛合金表面处理技术和应用)[M].Beijing:National Defense Industry Press,2010:173
[21]Li Changhe(李长河),Xiu Shichao(修世超),Cai Guangqi(蔡光起)et al.Diamond and Abrasives Engineering(金刚石与磨料磨具工程)[J],2004,142:15
[22]Yao Xiaofei(姚小飞),Xie Faqin(谢发勤),Wang Yifei(王毅飞)et al.Rare Metal Materials and Engineering(稀有金属材料与工程)[J],2012,41(12):2135
[23]Ding Wenfeng(丁文峰),Xu Jiuhua(徐九华),Shen Min(沈敏)et al.Rare Metal Materials and Engineering(稀有金属材料与工程)[J],2006,35(8):1215