烧结工艺和碳加入量对Mo2FeB2基金属陶瓷显微组织和力学性能的影响
Effects of Sintering Technique and Amount of Carbon Addition on Microstructure and Mechanical Properties of Mo2FeB2 Based Cermets
摘 要
采用反应烧结法制备了Mo2FeB2基金属陶瓷,用扫描电镜、能谱仪及X射线衍射仪等手段研究了烧结工艺和碳加入量对其显微组织和力学性能的影响.结果表明:随着碳加入量的增大,金属陶瓷的硬度和抗弯强度均先增大再减小;当添加0.5%的碳时,在1 100 ℃保温60 min并最终在1 280 ℃烧结60 min,能够获得完全致密且力学性能较好的Mo2FeB2基金属陶瓷,其抗弯强度达到1 176 MPa.
烧结工艺
碳加入量
Mo2FeB2 based cermet
sintering technique
amount of carbon addition
Abstract
The Mo2FeB2 based cermets were prepared by reaction sintering method.The effects of sintering technique and amount of carbon addition on microstructure and mechanical properties of the Mo2FeB2 based cermets were studied by scanning electron microscopy (SEM),energy dispersive X-ray spectroscopy (EDS) and X-ray diffraction (XRD).The results show that with the increase of carbon addition,hardness and flexural strength of the cermets both first increased and then decreased.Mo2FeB2 based cermets with complete density and good mechanical properties could be obtained when the amount of carbon addition was 0.5wt%,soaked at 1 100 ℃ for 60 min and subsequently sintered at 1 280 ℃ for 60 min.The flexural strength could reach to 1 176 MPa.
中图分类号 TG146.1
所属栏目 试验研究
基金项目 国家自然科学基金资助项目(50674057);湖北省耐火材料与高温陶瓷重点实验室－省部共建国家重点实验室培育基地开放基金资助项目(G0505)
收稿日期 2007/8/26
修改稿日期 2008/12/18
网络出版日期
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备注郑建智(1984-),男,江苏扬州人,硕士研究生.
引用该论文: ZHENG Jian-zhi,CHENG Xin,ZHENG Yong,YAN Yong-lin,ZHAO Neng-wei. Effects of Sintering Technique and Amount of Carbon Addition on Microstructure and Mechanical Properties of Mo2FeB2 Based Cermets[J]. Materials for mechancial engineering, 2009, 33(3): 31～34
郑建智,承新,郑勇,严永林,赵能伟. 烧结工艺和碳加入量对Mo2FeB2基金属陶瓷显微组织和力学性能的影响[J]. 机械工程材料, 2009, 33(3): 31～34
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参考文献
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【3】TAKAGI K,YAMASAKI Y,KOMAI M.High-strength boride base hard materials[J].Journal of Solid State Chemistry,1997,133:243-248.
【4】NISHIYAMA K,KEINO M,FURUYAMA Y,et al.Internal friction of boride cermets at elevated temperatures[J].Journal of Alloys and Compounds,2003,355:97-102.
【5】SAEZ A,ARENAS F,VIDAL E.Microstructure development of WCoB-TiC based hard materials[J].International Journal of Refractory Metals & Hard Materials,2003,21:13-18.
【6】杨俊茹,刘福田,张悦刊,等.对金属陶瓷硬质覆层材料界面层扩散的研究[J].材料导报,2006,20(5):123-125.
【7】刘福田,李文虎,张英才.硬质合金覆层-钢基体结合界面层及其生长模型的研究[J].陶瓷学报,2004,25(3):139-144.
【8】刘福田,李兆前,黄传真.三元硼化物基金属陶瓷覆层性能的研究[J].机械工程材料,2003,27(7):30-34.
【9】驹井正雄,高木研一.高强度硼化物系金属陶瓷[J].国外难熔金属与硬质合金,1998,14(1):52-64.
【10】王永国,李兆前,张荻.新型金属陶瓷的耐腐蚀性能研究[J].机械工程材料,2003,27(10):25-27.
【11】卢伟民,张蓓,杨宣增,等.氧对Mo2FeB2金属陶瓷性能的影响[J].中国有色金属学报,1997,7(2):145-149.
【12】张梅琳,朱世根,朱守星.超细及纳米硬质合金中碳含量的变化及对组织性能的影响[J].材料导报,2006,20(8):65-68.
【13】王永国,李兆前,黄传真.钢用硬质覆层材料的显微结构分析[J].电子显微学报,2002,21(1):72-75.
【14】WANG Y G,LI Z Q.Development of ternary-boride-based hard cladding material[J].Materials Research Bulletin,2002,37:417-423.
【15】刘福田,李兆前,黄传真.三元硼化物基金属陶瓷复合材料及其液相烧结机理[J].济南大学学报:自然科学版,2001,15(4):291-295.
【16】刘福田,李兆前,黄传真,等.合金组分对金属陶瓷覆层材料性能影响的研究[J].硅酸盐通报,2003(2):38-42.
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