Al<sub>2</sub>O<sub>3</sub>基复合金属陶瓷模具材料的组织结构与力学性能

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摘要以纳米Al₂O₃和纳米Ti(C,N)为主要原料,以Mo和Ni粉等为助烧剂,采用N₂气氛保护热压工艺制备Al₂O₃基复合金属陶瓷模具材料。采用XRD和SEM分析材料的物相组成及微观结构,并测试材料的力学性能。结果表明,当烧结温度为1 660 ℃,纳米Al₂O₃质量分数为74.5%,纳米Ti(C,N)粉为20%、Mo+Ni粉为5%时,所制备的Al₂O₃基复合金属陶瓷模具材料性能最佳,其相对密度为98.14%,弯曲强度值为795.98 MPa,硬度值为18.52 GPa,断裂韧性为8.05 MPa·m^1/2。第二相的引入和晶界处Mo+Ni的共同作用,可增强晶界强度,促进沿晶裂纹向穿晶裂纹转变,从而提高材料的力学性能。

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	刘咸超
	郭容

关键词 ：纳米氧化铝, Ti(C,N), 热压烧结, 力学性能, 物相组成, 显微结构

Abstract：The alumina matrix composite metal-ceramic die materials were fabricated by hot-pressing sintering technique in N₂ atmosphere using nano Al₂O₃ and Ti(C,N) as the main raw materials, Mo and Ni as sintering additives. The phase composition and microstructure were tested and analyzed by XRD and SEM. The mechanical property was also studied. The results show that when the sintering temperature is 1 660 ℃, the mass fraction of nano Al₂O₃ is 74.5%, nano Ti(C,N) is 20% and Mo+Ni is 5%, the prepared alumina matrix composite metal ceramic die material can obtain the optimal properties. And the relative density is 98.14%, flexural strength is 795.98 MPa, hardness is 18.52 GPa and fracture toughness is 8.05 MPa·m^1/2. Introduced second phase and Mo+Ni in the boundary of crystal can increase the crystal boundary strength, accelerate intergranular crack transit to transgranular cracks, then enhance mechanical properties of the samples.

Key words： Nano alumina Ti(C,N) hot-pressing sistering mechanical properties phase composition microstructure

收稿日期: 2018-06-26 出版日期: 2019-07-12

ZTFLH:

TF125.42

通讯作者: 刘咸超,讲师。E-mail: rong_hu8019@163.com

引用本文:

刘咸超, 郭容. Al₂O₃基复合金属陶瓷模具材料的组织结构与力学性能[J]. 粉末冶金材料科学与工程, 2019, 24(1): 58-62.
LIU Xianchao, GUO Rong. Microstructure and mechanical properties of Al₂O₃matrix composite metal ceramic die materials[J]. Materials Science and Engineering of Powder Metallurgy, 2019, 24(1): 58-62.

链接本文:

http://pmbjb.csu.edu.cn/CN/ 或 http://pmbjb.csu.edu.cn/CN/Y2019/V24/I1/58

[1] 郭景坤. 关于先进结构陶瓷的研究[J]. 无机材料学报, 1999, 14(2): 193-202.
GUO Jingkun.Research on advanced structural ceramics[J]. Journal of Inorganic Materials, 1999, 14(2): 193-202.
[2] 许崇海. 陶瓷模具材料的研究与应用[J]. 稀有金属材料与工程, 2005, 34(1): 262-265.
XU Chonghai.Research and application of ceramic die materials[J]. Rare Metal Materials and Engineering, 2005, 34(1): 262-265.
[3] 陈娇, 罗兵辉, 刘小平, 等. 热挤压模具用Al₂O₃/(W,Cr)金属陶瓷的性能[J]. 机械工程材料, 2011, 35(2): 47-50.
CHEN Jiao, LUO Binghui, LIU Xiaoping, et al.Properties of Al₂O₃/(W,Cr) cermet for hot extrusion die[J]. Materials for Mechancial Engineering, 2011, 35(2): 47-50.
[4] 邵刚勤, 段兴龙, 袁润章. 纳米陶瓷、复相陶瓷及纳米复相陶瓷[J]. 材料科学与工艺, 2003, 11(2): 211-214.
SHAO Gangqin, DUAN Xinglong, YUAN Runzhang.Nano- ceramics, ceramic composites & ceramic nano-composites[J]. Materials Science and Technology, 2003, 11(2): 211-214.
[5] 刘开琪, 徐强, 张会军. 金属陶瓷的制备与应用[M]. 北京: 冶金工业出版社, 2008.
LIU Kaiqi, XU Qiang, ZHANG Huijun.Preparation and Application of Cermet[M]. Beijing: Metallurgical Industry Press, 2008.
[6] 许崇海, 孙德明. 模具用Ti(C,N)/A1₂O₃陶瓷材料的微观结构与力学性能[J]. 粉末冶金技术, 2005, 23(4): 243-247.
XU Chonghai, SUN Deming.Microstructure and mechanical properties of Ti(C,N)/Al₂O₃ ceramic die material[J]. Powder Metallurgy Technology, 2005, 23(4): 243-247.
[7] 尤显卿, 斯庭智, 任萍萍, 等. 纳米TiN改性TiN改性Al₂O₃- TiC复合陶瓷的力学性能[J]. 硅酸盐学报, 2004, 32(12): 1542-1545.
YOU Xianqing, SI Tingzhi, REN Pingping, et al.Mechanical properties of Nano-TiN modified Al₂O₃-TiC composite ceramic[J]. Journal of the Chinese Ceramic Society, 2004, 32(12): 1542-1545.
[8] 李乾, 孙旭东, 修稚萌. Ni和Ti的添加对Al₂O₃-Ti(C,N)复合材料性能的影响[J]. 无机材料学报, 2011, 26(9): 955-960.
LI Qian, SUN Xudong, XIU Zhimeng.Effect of Ni and Ti on mechanical properties of Al₂O₃-Ti(C,N) composites[J]. Journal of Inorganic Materials, 2011, 26(9): 955-960.
[9] 李国军, 黄校先, 郭景坤. 晶内/晶间复合型Al₂O₃-Ni纳米金属陶瓷显微结构和力学性能的研究[J]. 无机材料学报, 2003, 18(1): 71-77.
LI Guojun, HUANG Xiaoxian, GUO Jinkun.Microstructure and mechanica1 properties of the Intra/Inter-type Al₂O₃/Ni nanocermets[J]. Journal of Inorganic Materials, 2003, 18(1): 71-77.
[10] 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.
XU Zhimou, YI Xinjian, HU Maozhong, et al.Study of Ti(C,N) Nanopowder reinforced Ti(C,N)-based cermets[J]. Transactions of Materials and Heat Treatment, 2003, 24(3): 41-45.
[11] 刘含莲, 黄传真, 秦惠芳, 等. 纳米复合陶瓷材料的增韧补强机理研究进展[J]. 粉末冶金技术, 2004, 22(2): 98-103.
LIU Hanlian, HUANG Chuanzhen, QIN Huifang, Research evolution on the strengthening and toughening mechanisms of nano-scale composite ceramics[J]. Powder Metallurgy Technology, 2004, 22(2): 98-103.
[12] 邹伶俐. Ti(C,N)含量对硬质合金脱β层的形成及其CVD涂层刀具切削性能的影响[J]. 粉末冶金技术, 2015, 33(2): 116-120.
ZOU Lingli.Effect of Ti(C,N) content on the formation of gradient cemented carbide and its cutting performance of CVD-coated tools[J]. Powder Metallurgy Technology, 2015, 33(2): 116-120.
[13] 邓福铭, 赵晓凯, 邹波, 等.硬质合金基体预处理工艺对CVD金刚石涂层附着性能的影响[J]. 工具技术, 2013, 47(6): 14-18.
DENG Fuming, ZHAO Xiaokai, ZHOU Bo, et al.Effect of cemented carbide substrate pretreatment process for CVD diamond coating adhesion properties[J]. Tool Engineering, 2013, 47(6): 14-18.
[14] 陈政文. PVD硬质合金涂层刀具切削和摩擦学性能研究[D]. 机械科学研究总院, 2012.
CHENG Zhengwen.Cutting research and tribological properties of PVD coated cemented carbide tool[D]. Mechanical Science Research Institute, 2012.
[15] 李力, 苏永要, 王锦标. 轻稀土对WC-10Co硬质合金表面PVD涂层微观结构与性能的影响[J]. 重庆文理学院学报(社会科学版), 2014, 33(5): 1-4.
LI Li, SU Yongyao, WANG Jinbiao.Effect of light rare earths on WC-10Co cemented carbide PVD coating microstructure and properties[J]. Chongqing University (Social Science Edition), 2014, 33(5): 1-4.
[16] YAN M F, ZHU Y D, ZHANG Y X, et al.Combining thermo- diffusing titanium and plasma nitriding to modify C61900 Cu-Al alloy[J]. Vacuum, 2016, 126: 41-44.