复合材料学报第35卷 第11期 11月 2018年Acta Materiae Com p ositae Sinica
Vol .35No .11Nov 2018
DOI :10.13801/j .cnki.fhclxb.20180227.001收稿日期:2017-11-23;录用日期:2018-03-01;网络出版时间:2018-03-05 17:39网络出版地址:htt p s ://doi.or g /10.13801/j .cnki.fhclxb.20180227.001基金项目:国家863计划项目(2015AA034404);山东省泰山学者攀登计划(ts p d2*******);国家自然科学基金(51772176)通讯作者:崔洪芝,博士,教授,博士生导师,研究方向为等离子表面改性二陶瓷基复合材料 E -mail :cuihon g zhi1965@https://www.doczj.com/doc/da6253899.html, 引用格式:毕文彪,崔洪芝,张新杰,等.Q235低碳钢表面等离子熔覆TiB 2-TiC /Fe 复合涂层及耐磨性[J ].复合材料学报,2018,35(11):3097-3105.BI Wenbiao ,CUI Hon g zhi ,ZHANG Xin j ie ,et al.Microstructure and wear resistance of TiB 2-TiC /Fe com p osite coatin g s on Q235steel p re p ared b y p lasma claddin g [J ].Acta Materiae Com p ositae Sinica ,2018,35(11):3097-3105(in Chinese ).Q 235低碳钢表面等离子熔覆TiB 2
-TiC /Fe 复合涂层及耐磨性
毕文彪,崔洪芝*,张新杰,王佳峰,王明亮
(山东科技大学材料科学与工程学院,青岛266590)摘 要: 采用等离子熔覆技术,以Fe55二Ti 二B 4C 混合粉末为原料,在Q235低碳钢表面获得了TiB 2-TiC
/Fe 复合涂层,并分析了涂层的物相组成二组织结构,测试了显微硬度和摩擦磨损性能,探讨了其磨损机制三TiB 2-TiC
/Fe 复合涂层的主要物相为TiB 2二TiC 二α-Fe ,其中TiB 2呈多边形和矩形,TiC 则呈不规则块状;随着原始粉末中Ti 二B 4C 含量的增加,TiB 2二TiC 尺寸逐渐增大,TiB 2-TiC /Fe 涂层与基体之间结合紧密,呈冶金结合;随着TiB 2-TiC /Fe 复合涂层陶瓷相含量的增加,涂层硬度和耐磨性显著提高,当陶瓷相含量增加到一定程度(35wt%)
时,涂层耐磨性能有所降低,TiB 2-TiC /Fe 复合涂层的磨损方式主要是磨粒磨损和剥层磨损三Ti +B 4C 陶瓷相含量为30wt%的等离子熔覆涂层耐磨性能较好,约为Q235钢基体的7倍,当Ti+B 4C 含量持续增加时,TiB 2二TiC 尺寸
增大二缺陷增多,最终使TiB 2-TiC /Fe 复合涂层耐磨性降低三关键词: 等离子熔覆;TiB 2-TiC ;复合涂层;组织结构;显微硬度;耐磨性中图分类号: TB333 文献标志码: A 文章编号: 1000-3851(2018)11-3097-09
Microstructure and wear resistance of TiB 2-TiC /Fe com p osite coatin g s
on Q 235steel p re p ared b y p lasma claddin g
BI Wenbiao ,CUI Hon g zhi *,ZHANG Xin j ie ,WANG Jiafen g ,WANG Min g lian g (Colle g e of Materials Science and En g ineerin g ,Shandon g Universit y of Science and Technolo gy ,Qin g dao 266590,China )
Abstract : TiB 2-TiC /Fe com p osite coatin g s were fabricated on the surface of Q235steel via p lasma claddin g b y used Ti ,B 4C ,and Fe55as p recursor materials.The p hase com p osition ,structure ,microhardness and friction wear re -sistance of TiB 2-TiC
/Fe coatin g s were anal y zed ,and the wear mechanism was also discussed.The results show that the TiB 2-TiC /Fe com p osite coatin g s mainl y consist of TiB 2,TiC and α-Fe.TiB 2p hase p resents rectan g le or multi -lateral sha p e ,and TiC p hase is irre g ular p atch sha p e.With the increase of ceramic content in TiB 2-TiC /Fe com p os -
ite coatin g s ,the sizes of TiB 2and TiC enlar g e g raduall y and the TiB 2-TiC /Fe com p osite coatin g s are closel y and metallur g icall y combined with Q235steel substrate.The wear resistance and hardness of TiB 2-TiC /Fe com p osite coatin g s can im p rove with the increasin g of ceramic contents in the coatin g s ,while the wear resistance declines when
ceramic content increases to some extent (35wt%)in TiB 2-TiC
/Fe com p osite coatin g s.The wear mechanism of TiB 2-TiC /Fe com p osite coatin g s are mainl y abrasive and delaminate wear.The p lasma claddin g coatin g with 30wt%ceramic content has lower wearin g volume ,and the wear resistance of the coatin g is 7times to that of Q235steel.When the content of Ti+B 4C continues to increase ,the size and defects of ceramic p hase increase and the wear re -sistance of the coatin g s reduces eventuall y .Ke y words : p lasma claddin g ;TiB 2-TiC ;com p osite coatin g ;structure ;microhardness ;wear resistance 万方数据