固相阶段烧结气氛对Ti(C,N)基金属陶瓷成分、组织和性能的影响
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摘要
在Ti(C,N)基金属陶瓷固相烧结阶段,进行了烧结气氛分别为真空、低压氩气及不同压力氮气气氛的实验。研究了固相阶段烧结气氛对合金微观结构、碳氮氧含量、物理力学性能和切削性能的影响。结果表明,固相阶段进行氮气氛烧结对金属陶瓷最终氮含量有显著的影响,从而影响合金成分、微观结构和各项性能。相比真空烧结工艺,在固相烧结1 100~1 300℃阶段通入30~50 mbar N_2气进行气氛烧结,能抑制Ti(C,N)分解脱N,提高合金的N/C比,合金抗冲击性能得到提升。
In the solid phase sintering stage of Ti(C,N)-based cermets, the furnace atmospheres were controlled in vacuum, low pressure argon and nitrogen at different pressures, respectively. The effects of furnace atmospheres on microstructure, carbon, nitrogen, oxygen content, physical and mechanical properties and cutting performance were investigated. The results show that nitrogen atmosphere in the solid sintering stage has a significant effect on the final nitrogen content of the cermets, which affects the composition, microstructure, properties and the cutting performance.Compared with vacuum sintering, solid phase sintering at 1 100 to 1 300 ℃ under the atmosphere of 30~50 mbar nitrogen gas can inhibit the decomposition of Ti(C,N) and enhance the N/C ratio of the cermets, thus the impact resistance of the alloy is significantly improved.
In the solid phase sintering stage of Ti(C,N)-based cermets, the furnace atmospheres were controlled in vacuum, low pressure argon and nitrogen at different pressures, respectively. The effects of furnace atmospheres on microstructure, carbon, nitrogen, oxygen content, physical and mechanical properties and cutting performance were investigated. The results show that nitrogen atmosphere in the solid sintering stage has a significant effect on the final nitrogen content of the cermets, which affects the composition, microstructure, properties and the cutting performance.Compared with vacuum sintering, solid phase sintering at 1 100 to 1 300 ℃ under the atmosphere of 30~50 mbar nitrogen gas can inhibit the decomposition of Ti(C,N) and enhance the N/C ratio of the cermets, thus the impact resistance of the alloy is significantly improved.
引文
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[16]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.Xiong Weihao,Hu Zhenhua,Cuikun.Transitional layer of phase interfaces in Ti(C,N)-based cermets[J].Acta Metallurgica Sinica,1996,32(10):1075-1080.
[17]孙景,刘俊朋,郭小南,等.含VC的WC-10%Ni硬质合金无磁机理研究[J].硬质合金,2003,20(2):72-75.Sun Jing,Liu Junpeng,Guo Xiaonan,et al.Research on mechanism of the magnetic transformation of WC-10%Ni cemented carbide with VCadditions[J].Cemented Carbides,2003,20(2):72-75.
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[19]Zhang Li,Xie Mingwei,Cheng Xin,et al.Micro characteristics of binder phases in WC-Co cemented carbides with Cr-V and Cr-V-REadditives[J].International Journal of Refractory Metals and Hard Materials,2013,36(1):211-219.
[20]焦鹏鹤,余浩,陈异,等.复合添加Cr3C2/Nb C对超细晶WC-10%Co硬质合金组织和性能的影响[J].硬质合金,2011,28(4):212-218.Jiao Pengpeng,Yu Hao,Chen Yi,et al.Effects of combined addition of Cr3C2and Nb C on microstructure and properties of ultrafine WC-10%Co cemented carbides[J].Cemented Carbides,2011,28(4):212-218.
[21]周伟,郑勇,周斌,等.氮含量对Ti(C,N)基金属陶瓷显微组织与磨粒磨损行为的影响[J].硬质合金,2012,29(4):197-202.Zhou Wei,Zheng Yong,Zhou Bin,et al.Effect of nitrogen addition on microstructure and abrasive wear behavior of Ti(C,N)-based cermets[J].Cemented Carbides,2012,29(4):197-202.
[2]南晴,张立,解明伟,等.用固溶体和单组元为原料制备的Ti(C,N)基金属陶瓷的组织与性能[J].粉末冶金材料科学与工程,2013,(3):320-325.Nan Qing,Zhang Li,Xie Mingwei,et al.Microstructures and mechanical properties of Ti(C,N)-based cermets using solid solution type and interstitial phase type raw materials[J].Materials science and engineering of powder metallurgy,2013,(3):320-325.
[3]肖水清,伍尚华.Ti(C,N)基金属陶瓷材料显微结构与性能研究进展[J].硬质合金,2014,31(2):112-119.Xiao Shuiqing,Wu Shanghua.Research progress on microstructure and properties of Ti(C,N)-based cermets[J].Cemented Carbides,2014,31(2):112-119.
[4]南晴,张立,冯于平,等.钛的碳氮化物固溶与单组元对Ti(C,N)基金属陶瓷电化学腐蚀性能的影响[J].硬质合金,2013,30(3):147-153.Nan Qing,Zhang Li,Feng Yuping,et al.Effects of carbonitride solid solution and interstitial phase on electrochemical corrosion resistance of Ti(C,N)-based cermets[J].Cemented Carbides,2013,30(3):147-153.
[5]郑勇,赵兴中,胡镇华.Ti N对Ti(C,N)基金属陶瓷组织和性能的影响[J].硬质合金,1997,(3):139-143.Zheng yong,Zhao Xinzhong,Hu Zhenhua,et al.The influence of the adding contents of Ti N on the composition microstructure and properties of Ti(C,N)-based cermets[J].Cemented Carbides,1997,(3):139-143.
[6]柯荣现,张立,朱骥飞,等.碳热还原-化合反应制备超细Ti CN粉末工艺与特性表征研究[J].硬质合金,2015,32(2):71-78.Ke Rongxian,Zhang Li,Zhu Jifei,et al.Preparation and characterization of submicron Ti(C,N)powders produced by carbonthermal reduction-combination reaction[J].Cemented Carbides,2015,32(2):71-78.
[7]Zhang Li,Feng Yuping,Nan Qing,et al.Effects of titanium-based raw materials on electrochemical behavior of Ti(C,N)-based cermets[J].International Journal of Refractory Metals and Hard Materials,2015,48(48):11-18.
[8]周书助,王社权,彭卫珍,等.烧结气氛对Ti(C,N)基金属陶瓷组织和性能的影响[J].中国有色金属学报,2005,15(9):1350-1357.Zhou Shuzhu,Wang Shequan,Peng Weizheng,et al.Effect of sintering atmosphere on structure and properties of Ti(CN)-based cermets[J].The Chinese Journal of Nonferrous Metals,2005,15(9):1350-1357.
[9]晏鲜梅,熊惟皓,周凤云,等.氮化处理对Ti(C,N)基金属陶瓷组织结构和性能的影响[J].金属热处理,2006,31(5):17-20.Yan Xianmei,Xiong Weihao,Zhou Fengyun,et al.Effect of nitrogen treatment on the microstructure and properties of Ti(C,N)-based cermets[J].Heat Treatment of Metal,2006,31(5):17-20.
[10]刘文俊,熊惟皓,郑勇,等.氮化处理温度对Ti(C,N)金属陶瓷组织和性能的影响[J].金属热处理,2007,32(8):5-8.Liu Wenjun,Xiong Weihao,Zhen Yong,et al.Nitrogen treatment temperature on the microstructures and properties of Ti(C,N)-based cermets[J].Heat Treatment of Metal,2007,32(8):5-8.
[11]郑勇,熊惟皓,宗校军,等.Ti(C,N)基金属陶瓷氮化处理后的表面组织结构及形成机理[J].硅酸盐学报,2003,31(3):262-267.Zhen Yong,Xiong Weihao,Zong Xiaojun,et al.Surface microstructure and forming mechanism of Ti(C,N)based cermet heat-treated in nitrogen.Journal of the Chinese Ceramic Society,2003,31(3):262-267.
[12]肖水清,程利霞,伍尚华.Ti(C,N)基金属陶瓷烧结过程的显微组织演化[J].稀有金属与硬质合金,2016,(3):37-41.Xiao Shuiqing,Chen Lixia,Wu Shanghua.Microstructure evolution of Ti(C,N)-based cermets during sintering[J].Rare Metals and Cemented Carbides,2016,(3):37-41.
[13]Zhao Y,Zheng Y,Li Y,et al.Microstructure and performance of graded Ti(C,N)-based cermets modified by nitriding treatment during different sintering stages[J].International Journal of Refractory Metals and Hard Materials,2017,62:1-8.
[14]周书助,王社权,王零森,等.纳米Ti(CN)基金属陶瓷烧结过程中的组织结构演变[J].中国有色金属学报,2006,16(7):1184-1189.Zhou Shuzhu,Wang Shequan,Wang Lingsen,et al.Evolution of microstructure of nano-Ti(C,N)-based cermets in sintering[J].The Chinese Journal of Nonferrous Metals,2006,16(7):1184-1189.
[15]王全兆,刘越,关德慧,等.Ti N含量对Ti(C,N)/Ni Cr金属陶瓷微观结构和力学性能的影响[J].金属学报,2005,41(11):1121-1126.Wang Quanzhao,Liu yue,Guan Dehui,et al.Effect of Ti N content on microstructures and mechanical properties of Ti(C,N)/Ni Cr cermets[J].Acta Metallurgica Sinica,2005,41(11):1121-1126.
[16]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.Xiong Weihao,Hu Zhenhua,Cuikun.Transitional layer of phase interfaces in Ti(C,N)-based cermets[J].Acta Metallurgica Sinica,1996,32(10):1075-1080.
[17]孙景,刘俊朋,郭小南,等.含VC的WC-10%Ni硬质合金无磁机理研究[J].硬质合金,2003,20(2):72-75.Sun Jing,Liu Junpeng,Guo Xiaonan,et al.Research on mechanism of the magnetic transformation of WC-10%Ni cemented carbide with VCadditions[J].Cemented Carbides,2003,20(2):72-75.
[18]王晓灵.添加Cr及Cr3C2对WC-(Co,Ni)硬质合金比饱和磁化强度的影响[J].硬质合金,2011,28(6):337-344.Wang Xiaoling.Effect of Cr and Cr3C2addition on magnetic saturation of WC-(Co,Ni)cemented carbides[J].Cemented Carbides,2011,28(6):337-344.
[19]Zhang Li,Xie Mingwei,Cheng Xin,et al.Micro characteristics of binder phases in WC-Co cemented carbides with Cr-V and Cr-V-REadditives[J].International Journal of Refractory Metals and Hard Materials,2013,36(1):211-219.
[20]焦鹏鹤,余浩,陈异,等.复合添加Cr3C2/Nb C对超细晶WC-10%Co硬质合金组织和性能的影响[J].硬质合金,2011,28(4):212-218.Jiao Pengpeng,Yu Hao,Chen Yi,et al.Effects of combined addition of Cr3C2and Nb C on microstructure and properties of ultrafine WC-10%Co cemented carbides[J].Cemented Carbides,2011,28(4):212-218.
[21]周伟,郑勇,周斌,等.氮含量对Ti(C,N)基金属陶瓷显微组织与磨粒磨损行为的影响[J].硬质合金,2012,29(4):197-202.Zhou Wei,Zheng Yong,Zhou Bin,et al.Effect of nitrogen addition on microstructure and abrasive wear behavior of Ti(C,N)-based cermets[J].Cemented Carbides,2012,29(4):197-202.