TiB_2钢结硬质合金摩擦磨损行为
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摘要
利用Ti粉,B粉,还原铁粉与羰基铁粉为原料,使用微波烧结技术原位生成TiB_2钢结硬质合金。采用摩擦磨损实验仪对TiB_2钢结硬质合金耐磨性进行测试。结果表明:原位合成TiB_2钢结硬质合金由TiB_2,Fe_2B和α-Fe物相组成;随着TiB_2含量的增加,钢结硬质合金的相对密度与显微硬度均提高;TiB_2含量对钢结硬质合金摩擦系数无明显影响,但随着TiB_2含量的增加,磨损体积逐渐降低,耐磨性提高;随着载荷与转速的增加,TiB_2钢结硬质合金摩擦系数均逐渐降低,磨损体积均逐渐增加,磨损率升高;其磨损机制为磨粒磨损与粘着磨损。
TiB_2 steel bonded hard alloy was in situ synthesized by microwave sintering technology using Ti powder,B powder,reduced iron powder and carbonyl iron powder as raw materials. The wear resistance of the TiB_2 steel bonded hard alloy was investigated by friction wear tester. The results show that in situ synthesized TiB_2 steel bonded hard alloy consists of TiB_2,Fe_2B and α-Fe phases,and the relative density and the micro-hardness increase significantly with the increasing of TiB_2 content. The content of TiB_2 has no obvious effect on the friction coefficient of the TiB_2 steel bonded hard alloy,but with the increasing of TiB_2 content,the wear volume decreases gradually and the wear resistance increases. With the increasing of load and rotational speed,the friction coefficient of the TiB_2 steel bonded hard alloy decreases gradually,the wear volume increases gradually and the wear rate also increases. The main wear mechanism of the TiB_2 steel bonded hard alloy is abrasive wear and adhesive wear.
TiB_2 steel bonded hard alloy was in situ synthesized by microwave sintering technology using Ti powder,B powder,reduced iron powder and carbonyl iron powder as raw materials. The wear resistance of the TiB_2 steel bonded hard alloy was investigated by friction wear tester. The results show that in situ synthesized TiB_2 steel bonded hard alloy consists of TiB_2,Fe_2B and α-Fe phases,and the relative density and the micro-hardness increase significantly with the increasing of TiB_2 content. The content of TiB_2 has no obvious effect on the friction coefficient of the TiB_2 steel bonded hard alloy,but with the increasing of TiB_2 content,the wear volume decreases gradually and the wear resistance increases. With the increasing of load and rotational speed,the friction coefficient of the TiB_2 steel bonded hard alloy decreases gradually,the wear volume increases gradually and the wear rate also increases. The main wear mechanism of the TiB_2 steel bonded hard alloy is abrasive wear and adhesive wear.
引文
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[19]Chen W,Zhang D,Ai X.Effect of load on the friction and wear characteristics of Si3N4-h BN ceramic composites sliding against steels[J].Ceramics International,2016,43(5):4379-4389.
[2]Celebi G,Ipek M,Bindal C,et al.Some mechanical properties of borides formed on A1SI 8620 steel[J].Materials Forum,2005,29(3):456-460.
[3]陈新华,翟洪祥,王文娟.原位反应法制备Cr2Al Fe基复合材料[J].硅酸盐学报,2013,41(3):309-313.CHEN Xin-hua,ZHAI Hong-xiang,WANG Wen-juan.Fabrication of Cr2Al C-Fe based composites by in-situ reaction technique[J].Journal of the Chinese Ceramic,2013,41(3):309-313.
[4]Ortona A,Lagos M A,Scocchi G,et al.Spark plasma sintering of Zr B2-Si C composites with in-situ reaction bonded silicon carbide[J].Ceramics International,2014,40:821-826.
[5]韩文华.Ti B2颗粒增强45钢基表面复合材料的研究[D].包头:内蒙古科技大学,2011.HAN Wen-hua.Study on Ti B2particle reinforced 45 steel surface composites[D].Baotou:Inner Mongolia University of Science and Technology,2011.
[6]王皓,傅正义,袁润章.Ti B2-x Fe体系SHS合成的热力学计算[J].武汉工业大学学报,1997,19(1):4-7.WANG Hao,FU Zheng-yi,YUAN Run-zhang.Thermodynamic calculations of Ti B2-x Fe system by SHS synthetic[J].Journal of Wuhan University of Technology,1997,19(1):4-7.
[7]李苏,李俊寿,赵芳,等.Ti B2材料的研究现状[J].材料导报,2013,23(7):34-38.LI Su,LI Jun-shou,ZHAO Fang,et al.Advance in research of Ti B2materials[J].Materials Review,2013,23(7):34-38.
[8]Clark D E,Folz D C,West J K.Processing materials with microwave energy[J].Materials Science and Engineering,2000,287(2):153-158.
[9]Wroe R.Microwave sintering coming of age[J].Metal Power Report,1999,54(7/8):24-28.
[10]罗军明,魏峥,苏倩,等.Ti C含量对微波烧结钢结硬质合金组织及性能影响[J].材料热处理学报,2012,33(7):116-121.LUO Jun-ming,WEI Zheng,SU Qian,et al.Effect of Ti C content on microstructure and properties of steel-cemented carbide[J].Transactions of Metal Heat Treatment,2012,33(7):116-121.
[11]龚伟,李华,李自胜.(Ti,V)C原位烧结钢结硬质合金热处理后的组织与性能[J].金属热处理,2010,35(6):13-17.GONG Wei,LI Hua,LI Zi-sheng.Microstructure and properties of(Ti,V)C steel bonded carbides synthesized by in situ sintering after heat treatment[J].Heat Treatment of Metals,2010,35(6):13-17.
[12]熊拥军.高致密、高强度Ti C钢结硬质合金的研究[D].长沙:中南大学,2011.XIONG Yong-jun.Study on the high-denseness and high-strength steel bonded titanium carbide[D].Changsha:Central South University,2011.
[13]关文勇,丁义超,江书勇.碳化钒钢结硬质合金耐磨性研究[J].热加工工艺,2013,42(18):74-75.GUAN Wen-yong,DING Yi-chao,JIANG Shu-yong.Study on wear properties of vanadium steel bonded carbide[J].Hot Working Technology,2013,42(18):74-75.
[14]张登科.原位(Ti,W)C颗粒增强钢基复合材料的制备与组织性能研究[D].上海:上海交通大学,2011.ZHANG Deng-ke.Investigation on preparation,microstructure and properties of in-situ(Ti,W)C particle reinforced steel matrix composites[D].Shanghai:Shanghai Jiao Tong University,2011.
[15]蹇福全,何高风,于海.添加羰基铁粉提高铁基合金烧结密度的研究[J].粉末冶金技术,1994,12(4):278-281.JIAN Fu-quan,HE Gao-feng,YU Hai.Research on iron-based alloy sintered density by added carbonyl iron[J].Power Metallurgy Technology,1994,12(4):278-281.
[16]Miao Q,Cui C E,Pan J D,et al.Tribological behavior of magnesium alloy AZ91 coated with Ti N/Cr N by arc-glow plasma depositing[J].Chinese Journal of Aeronautics,2006,19(3):266-270.
[17]Zhang C,Song J,Jiang L,et al.Fabrication and tribological properties of WC-Ti B2composite cutting tool materials under dry sliding condition[J].Tribology International,2017,109:97-103.
[18]李新梅,刘炳,董晓峰.Al2O3颗粒增强Al-Mn合金基复合材料的制备及摩擦学性能[J].材料热处理学报,2011,32(7):6-11.LI Xin-mei,LIU Bing,DONG Xiao-feng.Fabrication and friction and wear behavior of Al2O3particulates reinforced Al-Mn alloy matrix composites[J].Transactions of Materials and Heat Treatment,2011,32(7):6-11.
[19]Chen W,Zhang D,Ai X.Effect of load on the friction and wear characteristics of Si3N4-h BN ceramic composites sliding against steels[J].Ceramics International,2016,43(5):4379-4389.