郑刚,许晓静,宋振华,戈晓岚,刘庆辉,吴桂兰,仲奕颖

• 1:江苏大学机械工程学院
• 2:江苏大学先进制造与现代装备技术工程研究院

摘要(Abstract)：

通过对TC4钛合金进行盐浴硼氧共渗试验,比较分析几种盐浴硼氧共渗剂。采用扫描电子显微镜(SEM)及其配备的能谱仪(EDS),X射线衍射仪(XRD),观察渗层表面形貌和物相,用维氏硬度计测量渗层表面显微硬度,测试与YG6球在干摩擦磨损条件下的摩擦磨损性能,并采用化学热力学分析盐浴硼氧共渗机理。结果表明单一硼砂型(Na_2B_4O_7)共渗效果不理想,表面组织疏松,显微硬度为584.7HV;硼砂—铝粉型渗层表面组织呈块状和球形颗粒状,主要由TiB_2、TiB_(12)、Ti_2B5_、Ti3Al和TiO_2相组成,表面显微硬度提高了71.5%(631.8HV),有一定的共渗效果;硼砂—碳化硅型渗层表面组织均匀,主要有TiB_(12)、Ti_2B_5、TiB_(25)、TiO_2和TiC相,表面显微硬度提高了84.1%(677.4HV),共渗效果显著;氯化钠—氧化硼—碳化硼型渗层表面组织致密,有团聚现象,主要有TiB、TiB_2、TiB12、TiO_2和TiC相,表面显微硬度提高了80.1%(664.9HV),共渗效果明显。组分盐浴硼氧共渗可以显著改善TC4钛合金的耐磨性能。

关键词(KeyWords)： TC4钛合金;盐浴硼氧共渗;显微硬度;化学热力学

Abstract:

Keywords:

基金项目(Foundation): 科技型中小企业技术创新基金(13c26213202029);; 镇江市工业科技支撑(SGY20130037);; 江苏大学拔尖人才工程基金(1211110001)

作者(Author): 郑刚,许晓静,宋振华,戈晓岚,刘庆辉,吴桂兰,仲奕颖

DOI: 10.13289/j.issn.1009-6264.2015.12.036

参考文献(References)：

• [1]衣晓红,樊占国,张景垒,等.Ti-6Al-4V钛合金固体渗硼法表面改性[J].材料热处理学报,2010,31(9):119-123.YI Xiao-hong,FAN Zhan-guo,ZHANG Jing-lei,et al.Surface modification of Ti-6Al-4V alloy by pack boronizing[J].Transactions of Materials and Heat Treatment,2010,31(9):119-123.
• [2]詹斌,刘宁,李彬彬,等.渗硼对Ti(C,N)基金属陶瓷组织和性能的影响[J].材料热处理学报,2012,33(8):134-139.ZHAN Bin,LIU Ning,LI Bin-bin,et al.Effect of boronizing on microstructure and properties of Ti(C,N)-based cermet[J].Transactions of Materials and Heat Treatment,2012,33(8):134-139.
• [3]李凤华,王丽娜,衣晓红,等.钛及钛合金渗硼的研究现状与反应机理[J].材料与冶金学报,2013,12(3):212-217.LI Feng-hua,WANG Li-na,YI Xiao-hong,et al.The research status and reaction mechanism of boronizing on titanium and its alloys[J].Journal of Materials and Metallurgy,2013,12(3):212-217.
• [4]吴桂兰,戈晓岚,许晓静,等.TC4钛合金表面氧化镧催渗渗硼工艺优化[J].金属热处理,2014,39(9):24-27.WU Gui-lan,GE Xiao-lan,XU Xiao-jing,et al.Optimization of lanthanum oxide catalytic boronizing on surface of TC4 titanium alloy[J].Heat Treatment of Metals,2014,39(9):24-27.
• [5]TANG Jin-Gang,LIU Dao-Xin,TANG Chang-Bin,et al.Surface modification of Ti-6Al-4V alloy by cathode assiting discharge setup and conventional plasma nitriding methods[J].Science China Technological Sciences,2013,56(8):1858-1864.
• [6]黄有国,赵欣,任孟德,等.钛金属(B4C+B2O3)固体粉末渗硼[J].稀有金属材料与工程,2013,42(1):158-161.HUANG You-guo,ZHAO Xin,REN Meng-de,et al.Pack boronizing of titanium by B4C+B2O3[J].Rare Metal Materials and Engineering,2013,42(1):158-161.
• [7]黄有国,任孟德,赵欣,等.金属钛表面Na2B4O7-Al熔盐渗硼[J].粉末冶金材料科学与工程,2012,17(1):50-54.HUANG You-guo,REN Meng-de,ZHAO Xin,et al.Molten salts boronizing on titanium surface with Na2B4O7-Al[J].Materials Science and Engineering of Powder Metallurgy,2012,17(1):50-54.
• [8]杨闯,马亚芹,王亮.TC4钛合金真空脉冲渗氧硬化层的组织与性能[J].表面技术,2013,03:38-41.YANG Chuang,MA Ya-qin,WANG Liang.Microstructure and properties of vacuum pulse oxidation hardening layer on TC4 titanium alloy[J].Surface Technology,2013,03:38-41.
• [9]Zarchi H R K,Soltanieh M,Aboutalebi M R,et al.Thermodynamic study on pack aluminizing systems of pure titanium and nickel[J].Transactions of Nonferrous Metals Society of China,2013,23(6):1838-1846.
• [10]王泽莹,张峰,王振霞,等.纯钛表面等离子渗镍合金层的显微组织及摩擦学性能[J].机械工程材料,2012,36(4):73-76.WANG Ze-ying,ZHANG Feng,WANG Zhen-xia,et al.Microstructure and tribology property of plasma nickelized alloy layer on pure titanium surface[J].Materials for Mechanical Engineering,2012,36(4):73-76.
• [11]LI Feng-hua,YI Xiao-hong,ZHANG Jing-lei,et al.Growth kinetics of titanium boride layers on the surface of Ti-6Al-4V[J].Acta Metall Sin(Engl Lett),2010,23(4):293-300.
• [12]衣晓红,樊占国,张景垒,等.TC4钛合金固体渗硼及渗硼过程动力学研究[J].东北大学学报,2010,31(1):88-91.YI Xiao-hong,FAN Zhan-guo,ZHANG Jing-lei,et al.Pack boronizing of TC4 titanium alloy and kinetics of boronizing process[J].Journal of Northeastern University,2010,31(1):88-91.
• [13]Sarma B,Tikekar N M,Ravi Chandran K S.Kinetics of growth of superhard boride layers during solid state diffusion of boron into titanium[J].Ceramics International,2012,38(8):6795-6805.
• [14]王晶,宋仁国,林鑫,等.γ-Ti Al金属间化合物合金表面激光熔覆Ti C-Ti-Al涂层研究[J].稀有金属材料与工程,2009,37(12):2191-2195.WANG Jing,SONG Ren-guo,LIN Xin,et al.Investiga-tions of laser cladding Ti C-Ti-Al coatings onγ-Ti Al intermetallic alloy[J].Rare Metal Materials and Engineering,2009,37(12):2191-2195.
• [15]LIU S N,LIU Z D,WANG Y.Ti-based composite coatings with gradient Ti Cx reinforcements on TC4 titanium alloy prepared by laser cladding[J].Science China,2014,57(7):1454-1461.
• [16]YAN Hai-yan,WEI Qun,CHANG Shao-mei,et al.A first-principle calculation of structural mechanical and electronic properties of titanium borides[J].Transactions of Nonferrous Metals Society of China,2011,21(7):1627-1633.

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