The Influence of Pre-sintering Temperature on the Microstructure and Properties of Nano-composite Ti(C,N)-based Cermets
摘 要
用真空预烧+热等静压处理工艺制备了纳米复合Ti(C,N)基金属陶瓷,用SEM和TEM/EDX研究了预烧温度对纳米复合Ti(C,N)基金属陶瓷显微组织和性能的影响.结果表明:随着预烧温度的升高,硬质相颗粒明显球化、细化且分布均匀,具有白芯-灰壳结构的小硬质相颗粒明显增多,且环形相较完整.在1 420 ℃预烧时,金属陶瓷具有较好的力学性能;继续升高预烧温度时,晶粒会明显长大,环形相变厚、变脆,导致材料的性能下降.综合考虑认为,较佳预烧结温度为1 420 ℃.
Abstract
The nano-composite Ti(C,N)-based cermets were produced by vacuum pre-sintering and post-hot isostatic pressing technology.The influence of pre-sintering temperature on the microstructure and properties of nano-composite Ti(C,N)-based cermets has been studied using SEM,TEM and EDX.With the increase of pre-sintering temperature,the grains were spheroidized gradually and distributed evenly,the size of grains decreased,the small grains with inner-rim and outer-rim and white core-gray hull increased greatly and the rim phase was complete.For the nano-composite cermets sintered at 1 420 ℃,it could acquire satisfied microstructure and good properties.When the pre-sintering temperature increased further,the crystalline began to grow,the rim phase became wider and the properties of cermets decreased.The optimal pre-sintering temperature of nano-composite Ti(C,N)-based cermets was 1 420 ℃.
中图分类号 TG146.1
所属栏目
基金项目 国家自然科学基金资助项目(50074017,50104006);湖北省自然科学基金资助项目(2000J032);湖北省教育厅科研项目计划资助项目(2001D67002)
收稿日期 2005/4/27
修改稿日期 2005/7/9
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备注刘文俊(1971-),男,黑龙江绥化人,讲师,博士研究生.
引用该论文: LIU Wen-jun,ZHENG Yong,XIONG Wei-hao. The Influence of Pre-sintering Temperature on the Microstructure and Properties of Nano-composite Ti(C,N)-based Cermets[J]. Materials for mechancial engineering, 2006, 30(6): 91~94
刘文俊,郑勇,熊惟皓. 预烧温度对纳米复合Ti(C,N)基金属陶瓷组织和性能的影响[J]. 机械工程材料, 2006, 30(6): 91~94
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参考文献
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【2】D’Errice G E,Bugliosi S,Cuppini D,et al.A study of cermet’s wear behaviour[J].Wear,1997,203-204:242-246.
【3】Viatte T,Bolognini S,Gutard T,et al.Investigation into the potential of a composite combining toughness and plastic deformation resistance[J].Refractory Metals & Hard Materials,1999,17:79-89.
【4】Bolognini S,Feusier G,Mari D,et al.High temperature mechanical behaviour of Ti(C,N)-Mo-Co cermets[J].Refractory Metals & Hard Materials,1998,16:257-268.
【5】Zheng Yong,Xiong Weihao,Liu Wenjun,et al.Effect of nano addition on the microstructures and mechanical properties of Ti(C,N)-based cermets[J].Ceramics International,2005,31:165-170.
【6】许育东,刘宁,曾庆梅,等.纳米TiN改性金属陶瓷刀具的磨损性能研究[J].机械工程材料,2002,26(6):28-31.
【7】郑勇,游敏,刘文俊,等.细晶粒金属陶瓷制备技术的研究进展[J].机械工程材料,2002,26(12):5-8.
【8】夏阳华,丰平,胡耀波,等.放电等离子烧结制备Ti( C,N)基金属陶瓷[J].机械工程材料,2004,28(5):29-31.
【9】黄伯云,周科朝,刘咏,等.热等静压用陶瓷模的研制[J].粉末冶金技术,1997,15(1):23-25.
【10】佘继红,江东亮,谭寿洪,等.碳化硅陶瓷的热等静压烧结[J].硅酸盐学报,1997,25(4):395-400.
【11】余立新,李晨辉,熊惟皓.Ti(C,N)基金属陶瓷在烧结-热等静压条件下的组织、性能研究[J].硬质合金,2001,18(2):69-73.
【12】赵顺兴,何如松,董应林,等.国内热等静压技术的若干应用[J].粉末冶金工业,1997,7(1):12-16.
【13】佘继红,江东亮,谭寿洪,等.碳化硅陶瓷及其复合材料的热等静压氮化[J].硅酸盐学报,1996,24(3):254-261.
【14】董绍明,陈忠明,谭寿洪,等.高温等静压后处理液相烧结SiC陶瓷的结构与性能表征[J].无机材料学报,1997,12(6):791-796.
【15】符夷雄,杨 敏.热等静压对硬质合金性能的影响[J].凿岩机械气动工具,1995,(4):16-20.
【16】肖纪美.合金能量学[M].上海:上海科学技术出版社,1985.462-467.
【17】Liu N,Xu Y D,Lia H,et al.Effect of nano-micro TiN addition on the microstructure and mechanical properties of TiC based cermets[J].Journal of the European Ceramic Society,2002,22:2409-2414.
【18】徐智谋,易新建,胡茂中,等.纳米Ti(C,N)增强Ti(C,N)基金属陶瓷的研究[J].材料热处理学报,2003,24(3):41-45.
【19】熊惟皓,胡镇华,崔 崑.Ti(C,N)基金属陶瓷的相界面过渡层[J].金属学报,1996,32(10):1075-1080.
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