TC4钛合金在模拟海水中腐蚀-磨损交互行为研究
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摘要
采用自制摩擦腐蚀装置研究了TC4钛合金在模拟海水中电化学腐蚀与机械磨损间的交互作用,探究了不同电化学状态对TC4钛合金腐蚀磨损行为的影响.在摩擦腐蚀过程中,TC4钛合金的腐蚀电位发生负偏移,腐蚀电流随着外加电位升高而增大,在零电流电势(OCP)附近TC4钛合金获得最低摩擦系数. TC4钛合金总体积损失随着外加电位的增加而增大,证实了腐蚀磨损交的交互作用随着外加电位的增加而增强;当电位从–0.5 V增大至0.8 V时,腐蚀磨损交互作用导致的材料损失占总材料损失的比例由12%增加至66%,其中腐蚀诱导磨损导致的损失量占比由7%增加至44%. OCP及其以下外加电位条件下,TC4钛合金的磨损机制为磨粒磨损;0 V电位下TC4钛合金磨损机制为磨粒磨损和疲劳磨损;0.8 V电位下TC4钛合金的磨损机制为磨粒磨损和摩擦诱导的腐蚀磨损.
The interaction between electrochemical corrosion and mechanical wear of TC4 titanium alloy in simulated seawater was studied by using a self-made tribocorrosion device. The effects of electrochemical parameter on the corrosion and wear of TC4 titanium alloy were discussed. During the trobicorrosion process, the corrosion potential of TC4 titanium alloy shifted toward more negative values, and the corrosion current increased along with the increase of the applied potential, and the lowest friction coefficient of TC4 titanium alloy was obtained under the current potential of about zero(OCP). The fact that the loss of TC4 titanium alloy volume increased along with the increase of the applied potential, confirming that the interaction between corrosion and wear was enhanced along with the increase of the applied potential. When the potential increased from –0.5 V to 0.8 V, the material loss caused by the interaction of corrosion and wear increased from 12% to 66%, and the loss caused by corrosion-induced wear increased from 7% to44%. Under applied potential equal or lower than OCP, the wear mechanism of TC4 titanium alloy was abrasive wear.The wear mechanism of TC4 titanium alloy at a potential of 0 V was abrasive wear and fatigue wear. The wear mechanism of TC4 titanium alloy at a potential of 0.8 V was abrasive wear and friction-induced corrosion wear.
The interaction between electrochemical corrosion and mechanical wear of TC4 titanium alloy in simulated seawater was studied by using a self-made tribocorrosion device. The effects of electrochemical parameter on the corrosion and wear of TC4 titanium alloy were discussed. During the trobicorrosion process, the corrosion potential of TC4 titanium alloy shifted toward more negative values, and the corrosion current increased along with the increase of the applied potential, and the lowest friction coefficient of TC4 titanium alloy was obtained under the current potential of about zero(OCP). The fact that the loss of TC4 titanium alloy volume increased along with the increase of the applied potential, confirming that the interaction between corrosion and wear was enhanced along with the increase of the applied potential. When the potential increased from –0.5 V to 0.8 V, the material loss caused by the interaction of corrosion and wear increased from 12% to 66%, and the loss caused by corrosion-induced wear increased from 7% to44%. Under applied potential equal or lower than OCP, the wear mechanism of TC4 titanium alloy was abrasive wear.The wear mechanism of TC4 titanium alloy at a potential of 0 V was abrasive wear and fatigue wear. The wear mechanism of TC4 titanium alloy at a potential of 0.8 V was abrasive wear and friction-induced corrosion wear.
引文
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[2]Yu Pengcheng,Liu Xiubo,Lu Xiaolong,et al.High-temperature tribological properties of laser clad composite coatings on Ti6Al4Valloy[J].Tribology,2015,35(6):737-745(in Chinese)[余鹏程,刘秀波,陆小龙,等.Ti6Al4V合金表面激光熔覆复合涂层的高温摩擦学性能研究[J].摩擦学学报,2015,35(6):737-745].doi:10.16078/j.tribology.2015.06.013.
[3]Wu Songbo,Ca Zhenlin,Lin Yu,et al.Effect of hard sand on the impact wear behavior of TC4 alloy[J].Tribology,2018,38(4):14-21(in Chinese)[吴松波,蔡振兵,林禹,等.硬质沙粒对TC4钛合金冲击磨损的损伤行为的研究[J].摩擦学学报,2018,38(4):14 -21].doi:10.16078/j.tribology.2018.04.002.
[4]Li Zhenhua,Hua Chen,Cheng Xianhua.Erosion mechanism evolution of Ti5553 treated by equal channel angular extrusion[J].Tribology,2015,35(1):45-52(in Chinese)[李振华,华晨,程先华.等径角挤压后Ti5553钛合金的冲蚀磨损机理演变[J].摩擦学学报,2015,35(1):45-52].doi:10.16078/j.tribology.2015.01.007.
[5]Xia Shenlin,Wang Gang,Yang Xiao,et al.Application of titanium and titanium alloy in ships[J].Cold Machining of Metal Processing,2016,(19):40-41(in Chinese)[夏申琳,王刚,杨晓,等.钛及钛合金在船舶中的应用[J].金属加工(冷加工),2016,(19):40-41].doi:10.3969/j.issn.1674-1641.2016.19.015.
[6]Chen Jun,Wang Tingxun,Zhou Wei,et al.Domestic and foreign marine titanium alloy and its application[J].Titanium Industry Progress,2015,32(6):8-12(in Chinese)[陈军,王廷询,周伟,等.国内外船用钛合金及其应用[J].钛工业进展,2015,32(6):8-12].
[7]Gao Pu,He Dongqing,Zheng Shaoxian,et al.In-situ study of tribocorrosion behavior of carbon-based and nitride-based coatings[J].Tribology,2015,32(2):138-146(in Chinese)[高溥,何东青,郑韶先,等.碳基和氮化物基涂层的摩擦-腐蚀交互行为的原位研究[J].摩擦学学报,2015,32(2):138-146].doi:10.16078/j.tribology.2015.02.003.
[8]Chen Jun,Li Quanan,Zhang Qing,et al.Effect of corrosion on wear resistance of several metals in seawater[J].Transactions of Materials&Heat Treatment,2014,35(12):166-171(in Chinese)[陈君,李全安,张清,等.海水腐蚀对几种金属材料耐磨性能的影响[J].材料热处理学报,2014,35(12):166-171].
[9]Ding H,Dai Z,Zhou F,et al.Sliding friction and wear behavior of TC11 in aqueous condition[J].Wear,2007,263(1-6):117-124.doi:10.1016/j.wear.2007.01.106.
[10]Wang Z,Huang W,Li Y,et al.Tribocorrosion behaviour of a biomedical Ti-25Nb-3Mo-3Zr-2Sn alloy in Ringer's solution[J].Materials Science&Engineering C,2017,76:1094-1102.
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[12]Priya R,Mallika C,Mudali U K.Wear and tribocorrosion behaviour of 304L SS,Zr-702,Zircaloy-4 and Ti-grade2[J].Wear,2014,310(1-2):90-100.doi:10.1016/j.wear.2013.11.051.
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[15]Henry P,Takadoum J,Ber?ot P.Tribocorrosion study of 316Lstainless steel and TA6V4 alloy in various electrolytes[J].Corrosion Science,2009,51(6):1308-1314.doi:10.1016/j.corsci.2009.03.015.
[16]Ye Y,Wang Y,Ma X,et al.Tribocorrosion behaviors of multilayer PVD DLC coated 304L stainless steel in seawater[J].Diamond&Related Materials,2017,79:S0925963517302066.
[17]Stack M M,Rodling J,Mathew M T,et al.Micro-abrasion-corrosion of a Co-Cr/UHMWPE couple in ringer's solution:An approach to construction of mechanism and synergism maps for application to bio-implants[J].Wear,2010,269(5):376-382.
[18]Li Xinxing,Li Yixian,Wang Shuqi.Wear behavior and mechanism of TC4 alloy in different environmental media[J].Chinese Journal of Rare Metals,2015,39(9):793-798(in Chinese)[李新星,李奕贤,王树奇.TC4合金在不同环境介质中的磨损行为及磨损机制研究[J].稀有金属,2015,39(9):793-798].
[19]Ponthiaux P,Wenger F,Drees D,et al.Electrochemical techniques for studying tribocorrosion processes[J].Wear,2004,256(5):459-468.doi:10.1016/S0043-1648(03)00556-8.
[20]Totolin V,Pejakovi?V,Csanyi T,et al.Surface engineering of Ti6Al4V surfaces for enhanced tribocorrosion performance in artificial seawater[J].Materials&Design,2016,104:10-18.
[21]Azzi M,Paquette M,Szpunar J A,et al.Tribocorrosion behaviour of DLC-coated 316L stainless steel[J].Wear,2009,267(5):860-866.
[22]Sun Y,Rana V.Tribocorrosion behaviour of AISI 304 stainless steel in 0.5 M NaCl solution[J].Materials Chemistry&Physics,2011,129(1):138-147.
[23]Tekin K C,Malayoglu U.Assessing the tribocorrosion performance of three different nickel-based superalloys[J].Tribology Letters,2010,37(3):563-572.doi:10.1007/s11249-009-9552-1.
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