WC-Al2O3复合材料与Si3N4陶瓷和YG6硬质合金配副时的摩擦磨损行为
Friction and Wear Behaviors of WC-Al2O3 Composite Paired with Si3N4 Ceramics and YG6 Cemented Carbide
摘 要
采用真空热压烧结技术制备了WC-15%Al2O3（质量分数）复合材料，分别以Si3N4陶瓷和YG6硬质合金为配副，在载荷40，80 N下进行了干滑动摩擦磨损试验，研究了复合材料的摩擦磨损性能。结果表明：与Si3N4陶瓷配副时复合材料的摩擦因数较高且波动较大，与YG6硬质合金配副时摩擦因数较低且相对稳定；与Si3N4陶瓷配副时，复合材料的磨损率在较低载荷下高于与YG6硬质合金配副时的，在较高载荷下则低于与YG6硬质合金配副时的；在载荷40，80 N下，复合材料的磨损机制均主要为疲劳磨损，伴随着微裂纹、脆性断裂和晶粒拔出等特征。
Si3N4陶瓷
YG6硬质合金
摩擦磨损
WC-Al2O3 composite
Si3N4 ceramics
YG6 cemented carbide
friction and wear
Abstract
WC-15wt%Al2O3 composite was prepared by vacuum hot-press sintering technique, and then subjected to dry sliding friction and wear tests under loads of 40, 80 N against Si3N4 ceramics and YG6 cemented carbide, respectively. The friction and wear behavior of the composite was investigated. The results show that the friction factor of the composite against Si3N4 ceramics was relatively high and fluctuated fiercely, whereas when against YG6 cemented carbide, the friction factor was relatively low and stable. The wear rate of the composite against Si3N4 ceramics was higher than that against YG6 cemented carbide at a lower load, whearas lower than that against YG6 cemented carbide at a heavier load. The wear mechanism of the composite under both loads of 40 N and 80 N was mainly fatigue wear, exhibiting features of microcracking, brittle fracture and pull-out of grains.
中图分类号 TH117.1 DOI 10.11973/jxgccl201903010
所属栏目 材料性能及应用
基金项目 中央高校基本科研业务费专项资金资助项目（17D310305）
收稿日期 2018/3/12
修改稿日期 2019/2/20
网络出版日期
作者单位点击查看
备注苏庆德(1991-),男,山东临沂人,博士研究生
引用该论文: SU Qingde,ZHU Shigen,DING Hao,BAI Yunfeng,DI Ping. Friction and Wear Behaviors of WC-Al2O3 Composite Paired with Si3N4 Ceramics and YG6 Cemented Carbide[J]. Materials for mechancial engineering, 2019, 43(3): 50～54
苏庆德,朱世根,丁浩,白云峰,狄平. WC-Al2O3复合材料与Si3N4陶瓷和YG6硬质合金配副时的摩擦磨损行为[J]. 机械工程材料, 2019, 43(3): 50～54
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【5】MALEK O, LAUWERS B, PEREZ Y, et al. Processing of ultrafine ZrO2 toughened WC composites[J]. Journal of the European Ceramic Society, 2009, 29(16):3371-3378.
【6】MA J, ZHU S G, OUYANG C X. Two-step hot-pressing sintering of nanocomposite WC-MgO compacts[J]. Journal of the European Ceramic Society, 2011, 31(10):1927-1935.
【7】QU H, ZHU S G, LI Q, et al. Microstructure and mechanical properties of hot-pressing sintered WC-x vol.%Al2O3 composites[J]. Materials Science and Engineering:A, 2012, 543:96-103.
【8】QU H X, ZHU S G, LI Q, et al. Influence of sintering temperature and holding time on the densification, phase transformation, microstructure and properties of hot pressing WC-40vol.%Al2O3 composites[J]. Ceramics International, 2012, 38(2):1371-1380.
【9】DONG W W, ZHU S G, WANG Y, et al. Influence of VC and Cr3C2 as grain growth inhibitors on WC-Al2O3 composites prepared by hot press sintering[J]. International Journal of Refractory Metals and Hard Materials, 2014, 45:223-229.
【10】SAITO H, IWABUCHI A, SHIMIZU T. Effects of Co content and WC grain size on wear of WC cemented carbide[J]. Wear, 2006, 261(2):126-132.
【11】GONG T M, YAO P P, ZUO X T, et al. Influence of WC carbide particle size on the microstructure and abrasive wear behavior of WC-10Co-4Cr coatings for aircraft landing gear[J]. Wear, 2016, 362/363:135-145.
【12】BONNY K, DE BAETS P, PEREZ Y, et al. Friction and wear characteristics of WC-Co cemented carbides in dry reciprocating sliding contact[J]. Wear, 2010, 268(11/12):1504-1517.
【13】尹斌, 周惠娣, 陈建敏, 等. 等离子喷涂纳米WC-12%Co涂层与陶瓷和不锈钢配副时的摩擦磨损性能对比研究[J]. 摩擦学学报, 2008, 28(3):213-218.
【14】骆祎岚, 刘秀蕊, 董威威, 等. WC-Al2O3复合材料摩擦磨损性能[J]. 复合材料学报, 2016, 33(11):2584-2590.
【15】李秀林, 陈丽勇, 易丹青, 等. WC-11Co硬质合金与不同岩石的摩擦磨损特性[J]. 粉末冶金材料科学与工程, 2015, 20(3):398-405.
【16】SHEIKH-AHMAD J Y, BAILEY J A. The wear characteristics of some cemented tungsten carbides in machining particleboard[J]. Wear, 1999, 225/226/227/228/229:256-266.
【17】BAJWA S, RAINFORTH W M, LEE W E. Sliding wear behaviour of SiC-Al2O3 nanocomposites[J]. Wear, 2005, 259(1/2/3/4/5/6):553-561.
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