w(Fe)/w(Ni)对Mo2FeB2基金属陶瓷的影响

doi:10.12068/j.issn.1005-3026.2023.09.007

摘要/Abstract

摘要： 以MoB，Fe，Ni，Cr粉末为原料，采用真空液相烧结工艺制备了不同w(Fe)/w(Ni)(10∶0，7∶3，5∶5，3∶7)的Mo₂FeB₂基金属陶瓷，并研究了w(Fe)/w(Ni)对金属陶瓷相组成、微观组织和力学性能的影响.结果表明，不同w(Fe)/w(Ni)的硼化物基金属陶瓷的硬质相和黏结相的相组成不同.其中当w(Fe)/w(Ni)=3∶7时，硬质相是由Mo₂NiB₂和Mo₂FeB₂组成的；而当w(Fe)/w(Ni)为其他比值时，硬质相则均为Mo₂FeB₂.当烧结温度为1350℃时，金属陶瓷的微观结构组织均匀，孔隙最少；随着烧结温度继续升高，硬质相颗粒发生团聚从而导致组织不均匀，因此性能也随之降低.经1350℃ 2h烧结，得到的金属陶瓷(w(Fe)/w(Ni)=10∶0)的硬度和抗弯强度均达到最大值，分别为82.1 HRA和1498.7MPa.同时，通过断口形貌分析可知，大量的韧窝和丰富的撕裂棱与金属陶瓷抗弯强度的提高密切相关.

关键词: w(Fe)/w(Ni)；金属陶瓷；微观结构；硬度；抗弯强度

Abstract: Mo₂FeB₂ based cermets with different w(Fe)/w(Ni)(10∶0， 7∶3， 5∶5， 3∶7) were prepared by the vacuum liquid phase sintering with MoB， Fe， Ni， and Cr powders as raw materials. The effects of w(Fe)/w(Ni) on the phase compositions， microstructures and mechanical properties of cermets were investigated. The results showed that the compositions of hard and binder phases of boride-based cermet with different w(Fe)/w(Ni) were different. When w(Fe)/w(Ni) of 3∶7， the hard phase was composed of Mo₂NiB₂ and Mo₂FeB₂; while in the cases of other w(Fe)/w(Ni)， the hard phase was Mo₂FeB₂. At 1350℃， the microstructure of cermets was uniform and the size of pore is minimized， with the increase of sintering temperature， the hard-phase particles aggregated and the microstructure was not homogeneous， which led to the decrease of mechanical properties. After sintering at 1350℃ for 2h， the hardness and bending strength of the obtained cermet(w(Fe)/w(Ni)=10∶0) reached the maximum， which were 82.1 HRA and 1498.7MPa respectively. Meanwhile， the analysis of fracture morphology revealed that a large number of dimples and rich tearing edges are closely related to the improvement of the bending strength of cermets.

Key words: w(Fe)/w(Ni); cermet; microstructure; hardness; bending strength

中图分类号:

TG148

刘俊汝，张国华，周国治. w(Fe)/w(Ni)对Mo₂FeB₂基金属陶瓷的影响[J]. 东北大学学报（自然科学版）, 2023, 44(9): 1269-1278.

LIU Jun-ru， ZHANG Guo-hua， ZHOU Guo-zhi. Effect of w(Fe)/w(Ni) Ratio on Mo₂FeB₂ Based Cermet[J]. Journal of Northeastern University(Natural Science), 2023, 44(9): 1269-1278.

参考文献

[1]Takagi K，Yamasaki Y，Komai M，et al.New multiple-boride base hard alloy［J］.Journal of Solid State Chemistry，1997，133(1):243-489.
[2]Ide T，Nakano K，Takagi K.Sintering mechanisms and mechanical properties of Mo₂FeB₂ based hard alloys［J］.Journal of the Japan Society of Powder and Powder Metallurgy，1987，34(7):302-308.
[3]Takagi K.Development and application of high strength ternary boride base cermets［J］.Journal of Solid State Chemistry，2006，179(9):2809-2818.
[4]Ide T，Ando T.Reaction sintering of an Fe-6 wt Pct B-48 wt Pct Mo alloy in the presence of liquid phases［J］. Metallurgical Transactions A，1989，20:17-24.
[5]Takagi K.High tough boride base cermets produced by reaction sintering［J］.Materials Chemistry and Physics，2001，67:214-219.
[6]Shen Y P，Huang Z F，Xiao P，et al.Sintering mechanism，microstructure evolution and nanomechanical roperties of Cr-added Mo₂FeB₂ based cermets［J］.Ceramics International，2020，46(10):15482-15491.
[7]Wang H Q，Sun J S，Li C N，et al.Microstructure and mechanical properties of molybdenum-iron-boron-chromium cladding using argon arc welding［J］. Materials Science and Technology，2016，32(16):1694-1701.
[8]Jin J，Sun J S，Wang G L.Effect of Mo content on microstructure and Wear resistance of Mo-Fe-B claddings［J］.International Journal of Refractory Metals and Hard Materials，2019，81:233-241.
[9]Tashiro H，Hirata K，Yamasaki Y，et al.Metal injection molding process of Mo₂FeB₂ boride base cermets［J］. Materials Science Forum，2007，534/535/536:377-380.
[10]Gladyshevskii E I，Fedorov T F，Kuzma Y B，et al.Isothermal section of the molbdenum-iron-boron system［J］. Soviet Powder Metallurgy and Metal Ceramics，1966，5:305-309.
[11]Yamasaki Y，Kazunori N，Okada M，et al.Microstructures and mechanical properties of V-containing Mo₂NiB₂ hard alloys［J］. Journal of the Japan Society of Powder and Powder Metallurgy，1995，42(4):438-442.
[12]魏祥，陈志国，钟掘，等.沉积气氛对电火花沉积Mo₂FeB₂基金属陶瓷涂层组织与性能的影响［J］.稀有金属材料与工程，2018，47(4):1199-1204.(Wei Xiang，Cheng Zhi-guo，Zhong Jue，et al.Influence of deposition atmosphere on structure and properties of Mo₂FeB₂-based cermet coatings produced by electro-spark deposition［J］. Rare Metal Materials and Engineering，2018，47(4):1199-1204.)
[13]董彪，刘文俊，赵迪，等.气压烧结工艺对Mo₂FeB₂基金属陶瓷组织和性能的影响［J］.硬质合金，2019，36(1):38-43.(Dong Biao，Liu Wen-jun，Zhao Di，et al.Effect of gas pressure sintering process on microstructure and mechanical properties of Mo₂FeB₂ based cermets［J］.Cemented Carbide，2019，36(1):38-43.)
[14]余海洲.反应硼化烧结Mo₂FeB₂基金属陶瓷的组织与性能［D］.南京:南京航空航天大学，2010.(Yu Hai-zhou.Microstructure and mechanical properties of Mo₂FeB₂ based cermets by reaction boronizing sintering［D］.Nanjing:Nanjing University of Aeronautics and Astronautics，2010.)
[15]刘宇，魏祥，魏修宇，等.Mo₂FeB₂基金属陶瓷的研究进展［J］.硬质合金，2021，38(5):377-385.(Liu Yu，Wei Xiang，Wei Xiu-yu，et al.Research progress on Mo₂FeB₂ based cermets［J］. Cemented Carbide，2021，38(5):377-385.)
[16]Tamasaki Y，Nishi M，Takagi K.Development of very high strength Mo₂NiB₂ complex boride base hard alloy［J］.Journal of Solid State Chemistry，2004，177(2):551-555.
[17]Takagi K，Komai M，Ide T，et al.Effects of Mo/B atomic ratio on the properties and structure of iron-molybdenum complex boride base hard alloys［J］. Journal of the Japan Society of Powder and Powder Metallurgy，1988，35(8):769-774.
[18]李木森，傅邵丽，徐万东，等.Fe₂B相价电子结构及其本质脆性［J］.金属学报，1995，31(5):201-208.(Li Mu-sen，Fu Shao-li，Xu Wan-dong，et al.Valence electron structure of Fe₂B phase and its eigen-brittleness［J］. Acta Metallurgica Sinica，1995，31(5):201-208.)
[19]李木森，侯绪荣，崔建军，等.渗硼层脆性判据K的物理本质［J］.金属热处理学报，1995，16(1):43-47.(Li Mu-sen，Hou Xu-rong，Cui Jian-jun，et al.Physical essence of brittleness criterion K for borided layer［J］. Transactions of Metal Heat Treatment，1995，16(1):43-47.)
[20]Ren X H，Yu L M，Liu Y C，et al.Effects of extra boron addition on the liquid-state sintering process and properties of hard Mo₂FeB₂-based cermets［J］. International Journal of Refractory Metals and Hard Materials，2016，61:207-214.
[21]Wu H，Zheng Y，Zhang J J，et al.Influence of Cr and W addition on microstructure and mechanical properties of multi-step sintered Mo₂FeB₂-based cermets［J］. Ceramics International，2020，46(8):10963-10970.
[22]Yu H Z，Liu W J，Zheng Y.Microstructure and mechanical properties of liquid phase sintered Mo₂FeB₂ based cermets［J］.Materials Design，2011，32(6):3521-3525.
[23]Ivanov M B，Vershinina T N，Ivanisenko V V.The effect of composition and microstructure on hardness and toughness of Mo₂FeB₂ based cermets［J］.Materials Science & Engineering A，2019，763:138117.
[24]罗致.钢体表面Mo₂NiB₂金属陶瓷涂层的设计、制备及应用研究［D］.湘潭:湘潭大学，2016.(Luo Zhi.Study on the design，preparation and application of Mo₂NiB₂ cermets coating on the surface of steel［D］.Xiangtan:Xiangtan University，2016.)
[25]Jo W，Kim D Y，Hwang N M.Effect of interface structure on the microstructural evolution of ceramics［J］.Journal of the American Ceramic Society，2006，89(8):2369-2380.
[26]German R M，Suri P，Park S J.Review:liquid phase sintering［J］.Journal of Materials Science，2009，44:1-39.
[27]闫东东，余海洲，刘文俊.Ni添加剂对Mo₂FeB₂基金属陶瓷的显微组织和力学性能的影响［J］.硬质合金，2020，37(1):38-42.(Yan Dong-dong，Yu Hai-zhou，Liu Wen-jun.Influence of Ni addition on microstructure and mechanical properties of Mo₂FeB₂ based cermets［J］.Cemented Carbide，2020，37(1):38-42.)
[28]Lifshitz I M，Siyozov V V.The kinetics of precipitation from supersaturated solid solutions［J］.Journal of Physics and Chemistry of Solids，1961，19(1/2):35-50.
[29]Wagner C.Z.Theory of precipitate aging via dissolution/reprecipitation ostwald ripening［J］. Elektrochem，1961，65(7/8):581-591.
[30]胡兵.烧结工艺与合金组分对Mo₂FeB₂金属陶瓷组织及性能的影响［D］.武汉:武汉科技大学，2011.(Hu Bing.Study on the influence of sintering process and alloys on microstructure and properties of cermet Mo₂FeB₂［D］.Wuhan:Wuhan University of Science and Technology，2011.)［31］Yu H Z，Zheng Y，Liu W J，et al.Effect of V content on the microstructure and mechanical properties of Mo₂FeB₂ based cermets［J］.Materials and Design，2010，31(5):2680-2683.［32］Ding C X，Huang B T，Lin H L.Plasma-sprayed wear-resistant ceramic and cermet coating materials［J］.Thin Solid Films，1984，118(4):485-493.［33］Rice R W.Comparison of stress concentration versus minimum solid area based mechanical property-porosity relations［J］.Journal of Materials Science，1993，28:2187-2190.

w(Fe)/w(Ni)对Mo₂FeB₂基金属陶瓷的影响

Effect of w(Fe)/w(Ni) Ratio on Mo₂FeB₂ Based Cermet

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