TaC含量对Ti(C,N)基金属陶瓷抗热震性能的影响
Effect of TaC Contents on Thermal Shock Resistance of Ti (C,N) Based Cermets
摘 要
采用粉末冶金工艺制备了TaC质量分数分别为0%, 2%, 4%和6%的Ti(C,N)基金属陶瓷, 通过压痕-急冷法研究了TaC含量对其抗热震性能的影响。结果表明, 随热震次数的增多, 金属陶瓷中的裂纹长度增加; 裂纹主要沿陶瓷相/金属相界面以及在金属相中扩展; 含TaC质量分数为2%的金属陶瓷晶粒细小, 且分布均匀, 环形相厚度适中, 在500 ℃多次热震后裂纹扩展最缓慢, 抗弯强度和硬度损失量最小, 抗热震性能最好; 热震后Ti(C,N)基金属陶瓷的硬度损失很小, 但残余抗弯强度显著下降。
TaC
抗热震性
压痕-急冷法
Ti(C,N)-based cermet
TaC
thermal shock resistance
indentation-quench method
Abstract
Ti(C,N)-based cermets with TaC contents of 0%, 2wt%, 4wt% and 6wt% were prepared by powder metallurgy process, and the effects of TaC contents on thermal shock resistance of the cermets were studied by an indentation-quench method. The results show that the length of cracks increased with the increase of the number of thermal shock, and the cracks mainly propagated along the interfaces between ceramic phase and metallic phase, and also propagated in metallic phase. The cermet with TaC content of 2wt% exhibited the best thermal shock resistance due to the fine grains, the homogeneous microstructure and the moderate thickness of rim phase, which gave rise to a slowest crack propagation and minimum loss of both bending strength and hardness after thermal shock at 500 ℃ for many times. The loss of hardness of Ti(C,N)-based cermets was very small, but the residual bending strength decreased dramatically.
中图分类号 TF125
所属栏目 试验研究
基金项目
收稿日期 2011/11/11
修改稿日期 2012/7/24
网络出版日期
作者单位点击查看
备注戴鸿霞(1986-), 女, 广西桂林人, 硕士研究生。
引用该论文: DAI Hong-xia,XIONG Wei-hao,ZHANG Guo-peng,CHEN Xiao. Effect of TaC Contents on Thermal Shock Resistance of Ti (C,N) Based Cermets[J]. Materials for mechancial engineering, 2012, 36(12): 10～13
戴鸿霞,熊惟皓,张国鹏,陈肖. TaC含量对Ti(C,N)基金属陶瓷抗热震性能的影响[J]. 机械工程材料, 2012, 36(12): 10～13
被引情况:
【1】陈敏,肖玄,任杰,谭斌,钟华杰, "TixV1-xCN基金属陶瓷的显微组织与力学性能",机械工程材料 40, 31-34(2016)
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参考文献
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【2】D'ERRICO G, BUGLIOSI S, GUGLIELMI E. Tool-life reliability of cermet inserts in milling tests[J]. Journal of Materials Processing Technology,1998,77(1/3):337-343.
【3】ETTMAYER P, LENGAUER W. The story of cermets[J]. Powder Metallurgy International,1989,21(2):37-38.
【4】ETTMAYER P, KOLASKA H, DREYER K. Effect of the sintering atmosphere on the properties of cermets[J]. Powder Metallurgy International,1991,23(4):224-230.
【5】ZACKRISSON J, THUVANDER M, LINDAHL P,et al.Atom probe analysis of carbonitride grains in (Ti,W,Ta,Mo)(C,N)(Co/Ni) cermets with different carbon content[J]. Applied Surface Science,1996,94/95(2):351-355.
【6】LINDAHL P, GUATAFSON P, ROLANDER U,et al.Microstructure of model cermets with high Mo or W content[J]. International Journal of Refractory Metals and Hard Materials,1999,17(6):411-421.
【7】韩成良,管航敏,高大明,等. 两种TiC基金属陶瓷的组织结构与刀具切削性能[J]. 机械工程材料,2006,30(11):21-28.
【8】TEGHIL R, D′ALESSIO L,ZACCAGNINO M,et al.TiC and TaC deposition by pulsed laser ablation:a comparative approach[J]. Applied Surface Science,2001,173(3/4):233-241.
【9】李国栋,熊翔,黄伯云,等. 温度对CVD-TaC涂层组成、形貌与结构的影响[J]. 中国有色金属学报,2005,15(4):565-571.
【10】李国栋,熊翔. C/C复合材料基TaC涂层低功率激光烧蚀特征[J]. 粉末冶金材料科学与工程,2005,10(3):155-159.
【11】QI F, KANG S. A study on microstructural changes in Ti(CN)-NbC-Ni cermets[J]. Materials Science and Engineering,1998,251(1/2):276-285.
【12】ROLANDER U, WEINL G, ZWINKELS M. Effect of Ta structure and mechanical properties of (Ti,Ta,W)(C.N)-Co cermets[J]. International Journal of Refractory Metals and Hard Materials,2001,19:325-328.
【13】杨国威. C/C-ZrB2(ZrC、TaC)超高温陶瓷基复合材料制备工艺及性能研究[D]. 长沙:国防科学技术大学,2008.
【14】WU P, ZHENG Y, ZHAO Y L,et al.Effect of TaC addition on the microstructures and mechanical properties of Ti(C,N)-based cermets[J]. Materials and Design,2010,31:3537-3541.
【15】佘振辉. 碳化钽的加入方式对合金结构和性能的影响研究[J]. 硬质合金,1996,13(1):9-14.
【16】YOSIDA Y. Superconducting single crystals of TaC encapsulated in carbon nanotubes[J]. Applied Physics Letters,1994,64(22):3048-3050.
【17】陈蓓,丁培道,程川,等. Al2O3+ZrO2层状复合陶瓷的表面抗裂纹行为及抗热震性能[J].硅酸盐学报,2004,32(6):718-722.
【18】SHETTY D, WRIGHT I, MINCER P,et al.Indentation fracture of WC-Co cermets[J]. Journal of Materials Science,1985,20:1873-1882.
【19】PARK S, KANG S. Toughened ultra-fine (Ti,W)(CN)-Ni cermets[J]. Scripta Materials,2005,52(2):129-133.
【20】曾德麟. 粉末冶金材料[M]. 北京:冶金工业出版社,1989:208.
【21】肖纪美. 材料的应用与发展[M]. 北京:宇航出版社,1988:78.
【22】徐根应,刘宁,许育东. 循环条件对金属陶瓷热冲击疲劳的影响[J]. 硬质合金,1998,15(1):12-15.
【23】HASSELMAN D.Unified theory of thermal shock fracture initiation and crack propagation in brittle ceramics[J]. Journal of the American Ceramic Society. 1969,52(11):600-604.
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