潘颖慧,潘应君,柯德庆,甘章华,徐鑫

• 1:武汉科技大学材料与冶金学院

摘要(Abstract)：

采用化学镀方法在Si_3N_4晶须表面镀覆了一层均匀的镍镀层,利用真空液相烧结法制备了不同镀镍Si_3N_4晶须含量的Mo_2NiB_2基金属陶瓷,采用扫描电镜、显微硬度仪和三点弯曲试验等研究了不同镀镍Si_3N_4晶须的添加量对Mo_2NiB_2基金属陶瓷组织与性能的影响。结果表明:添加了适量镀镍晶须的金属陶瓷的组织细化,分布更均匀,抗弯强度和断裂韧性均有显著提高;当镀镍Si_3N_4晶须添加量为0.6 mass%时,金属陶瓷的力学性能最佳,其抗弯强度和断裂韧性分别达到了1887.4 MPa和19.24 MPa·m~(1/2)。Si_3N_4晶须对Mo_2NiB_2基金属陶瓷的增韧是裂纹偏转、晶须桥联、微裂纹增韧以及细小硬质相颗粒对裂纹的阻碍等机制共同作用的结果。

关键词(KeyWords)： Si_3N_4晶须;Mo_2NiB_2金属陶瓷;微观组织;力学性能

Abstract:

Keywords:

基金项目(Foundation): 省部共建耐火材料与冶金国家重点实验室青年基金项目(2018QN04)

作者(Author): 潘颖慧,潘应君,柯德庆,甘章华,徐鑫

DOI: 10.13289/j.issn.1009-6264.2020-0118

参考文献(References)：

• [1] 罗致,李小波,谢浪,等.Mo2NiB2基金属陶瓷的研究进展[J].材料导报,2016,30(7):86-90.LUO Zhi,LI Xiao-bo,XIE Lang,et al.Research progress in the Mo2NiB2 based cermets[J].Materials Review,2016,30(7):86-90.
• [2] 潘应君,徐金龙,周青春.Mo2FeB2金属陶瓷-钢覆层材料的制备及性能研究[J].热加工工艺,2007,36(2):1-3.PAN Ying-jun,XU Jin-long,ZHOU Qing-chun.Study on preparation and properties of Mo2FeB2 cermets-steel clad material[J].Hot Working Technology,2007,36(2):1-3.
• [3] 王阳阳,贾晨,贾先,等.碳化硅晶须增韧复合材料的研究现状[J].兵器材料科学与工程,2019,42(4):142-146.WANG Yang-yang,JIA Chen,JIA Xian,et al.Research status of silicon carbide whisker toughening typical composites[J].Ordnance Material Science and Engineering,2019,42(4):142-146.
• [4] 梁飞,赵婧.晶须增韧陶瓷基复合材料匹配原则及影响因素[J].陶瓷,2018(9):59-64.LIANG Fei,ZHAO Jing.Matching principle and influencing factors of whisker toughened ceramic matrix composites[J].Ceramics,2018(9):59-64.
• [5] 刘兵,张茜,姜山,等.Si3N4晶须对TiC0.7N0.3-WC-TaC-Mo-(Ni,Co)金属陶瓷组织和性能的影响研究[J].功能材料,2016,47(3):3125-3128.LIU Bing,ZHANG Qian,JIANG Shan,et al.Effect of Si3N4 whisker on the properties and microstructure of TiC0.7N0.3-WC-TaC-Mo-(Ni,Co) cermet[J].Journal of Functional Materials,2016,47(3):3125-3128.
• [6] 周宏明,易丹青,李丹,等.Si3N4(p)/SiC(w)强韧化MoSi2基复合材料的显微组织与力学性能[J].粉末冶金技术,2010,28(3):172-177.ZHOU Hong-ming,YI Dan-qing,LI Dan,et al.Microstructure and mechanical properties of MoSi2-based composite strengthened and toughened by Si3N4(p)and SiC(w)[J].Powder Metallurgy Technology,2010,28(3):172-177.
• [7] 彭进,郝德辉,邹文俊,等.氮化硅晶须表面化学镀镍及应用研究[J].表面技术,2011,40(3):36-39.PENG Jin,HAO De-hui,ZOU Wen-jun,et al.Study on chemical wicker-plating and application of azotized silicon whisker[J].Surface Technology,2011,40(3):36-39.
• [8] 黄辽.碳纳米管和氮化硅晶须对Mo2FeB2基金属陶瓷组织与性能的影响[D].武汉:武汉科技大学,2019.HUANG Liao.Effect of carbon nanotubes and Si3N4 whiskers on microstructure and properties of Mo2FeB2-based cermets[D].Wuhan:Wuhan University of Science and Technology,2019.
• [9] 张朝阳,魏锡文,张海东,等.Ni-P化学镀的机理及其研究方法[J].中国有色金属学报,2001(S1):199-201.ZHANG Chao-yang,WEI Xi-wen,ZHANG Hai-dong,et al.Mechanisms and studying means of Ni-P electroless plating[J].The Chinese Journal of Nonferrous Metals,2001(S1):199-201.
• [10] 张恒.Mo2NiB2基金属陶瓷的制备及其组织性能研究[D].武汉:武汉科技大学,2016.ZHANG Heng.Research of preparation and structure properties of Mo2NiB2 based cermet[D].Wuhan:Wuhan University of Science and Technology,2016.
• [11] 刘玲,殷宁,亢茂青,等.晶须增韧复合材料机理的研究[J].材料科学与工程,2000(2):119-122.LIU Ling,YIN Ning,KANG Mao-qing,et al.Research on whisker toughening mechanism for composites[J].Materials Science and Engineering,2000(2):119-122.
• [12] Ye F,Yang J M,Zhang L T,et al.Fracture behavior of sic-whisker-reinforced barium aluminosilicate glass-ceramic matrix composites[J].Journal of the American Ceramic Society,2001,84(4):881-883.
• [13] 瞿峻,熊惟皓,刘文俊,等.SiC晶须改性金属陶瓷断裂韧性及增韧机理[J].华中科技大学学报(自然科学版),2010,38(3):25-28.QU Jun,XIONG Wei-hao,LIU Wen-jun,et al.Fracture toughness and toughening mechanisms of SiC whisker modified Ti(C,N)-based cermet[J].Journal of Huazhong University of Science and Technology(Nature Science Edition),2010,38(3):25-28.
• [14] Becher P F,Tiegs T N.Toughening behavior involving multiple mechanisms:whisker reinforcement and zirconia toughening[J].Journal of the American Ceramic Society,2005,70(9):651-654.
• [15] Wang C A,Huang Y,Zhai H X.The effect of whisker orientation in SiC whisker-reinforced Si3N4 ceramic matrix composites[J].Journal of the European Ceramic Society,1999,19(10):1903-1909.
• [16] Becher P F,Hsueh C H,Angelini P,et al.Toughening behavior in whisker reinforced ceramic matrix composites[J].Journal of the American Ceramic Society,2005,71(12):1050-1061.

文章评论(Comment)：