镍和铬对Mo2FeB2基金属陶瓷高温抗氧化性能的影响
Effects of Ni and Cr on Resistance to High-Temperature Oxidation property of Mo2FeB2 Based Cermets
摘 要
利用真空液相烧结技术制备了加入不同质量分数镍和铬的三元硼化物Mo2FeB2基金属陶瓷, 用XRD和SEM分析了其组成和结构, 用能谱仪分析了粘结相和硬质相的化学成分, 并研究了其在750 ℃时恒温氧化增重随时间的变化。结果表明: Mo2FeB2基金属陶瓷的氧化动力学遵循抛物线规律; 金属陶瓷中镍质量分数从6%增加至10%时, 氧化增重逐渐变大, 抗高温氧化能力恶化; 金属陶瓷中添加铬后, 氧化增重不明显, 并且随着铬含量的增加高温抗氧化能力先降后升。
金属陶瓷
镍
铬
高温氧化
ernary boride
cermets
nickel
chromium
high-temperature oxidation
Abstract
Mo2FeB2 based cermets with different contents of Ni and Cr were prepared by vacuum liquid phase sintering technology. The composition and structure of cermets were analyzed by means of X-ray diffracomer and scanning electron microscopy. The chemical composition of bonding phase and hard phase were analyzed by energy disperse spectroscopy. The variation of constant temperature oxidation weight gain with time was studied at 750 ℃. The results show that the oxidation kinetics of the Mo2FeB2 based cermets obeyed the parabola rule. The oxidation weight gain increased gradually and the high-temperature oxidation resistance worsened when the content of Ni increased from 6wt% to 10wt%. After adding Cr to cermets, the oxidation weight gain was unobvious and high-temperature oxidation resistance raised a little with increase of the content of Cr.
中图分类号 TG146.1
所属栏目
基金项目
收稿日期 2010/10/15
修改稿日期 2011/8/10
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备注李玉柱(1984-), 男, 内蒙古呼和浩特人, 硕士研究生。
引用该论文: LI Yu-zhu,ZHAO Wen-guang. Effects of Ni and Cr on Resistance to High-Temperature Oxidation property of Mo2FeB2 Based Cermets[J]. Materials for mechancial engineering, 2011, 35(10): 91～94
李玉柱,赵文广. 镍和铬对Mo2FeB2基金属陶瓷高温抗氧化性能的影响[J]. 机械工程材料, 2011, 35(10): 91～94
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参考文献
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【2】GERMAN R M,HWANG K S,MADAN D S.Analysis of Fe-Mo-B sintered alloys[J].Powder Meta Int,1987,19(2):15-18.
【3】OZAKI S,YAMASAKI Y,MASAO K.Crystal structural change of boride observed in Mo2NiB2 boride base hard alloys[J].JJAP Series,1994,10:220-221.
【4】刘福田,李兆前,黄传真,等.三元硼化物金属陶瓷覆层性能的研究[J].机械工程材料,2003,27(7):31-34.
【5】董飞,刘福田.芦令超.三元硼化物基金属陶瓷的制备及性能研究[J].济南大学学报: 自然科学版,2004,18(1):28-30.
【6】孙家枢.Ni-20Cr-Si和Ni-20Cr-Si-Al合金1200 ℃空气中的氧化行为[J].中国腐蚀与防护学报,1993,3(1):53-58.
【7】TSUNEYUKI I,TEIICHI A.Reaction sintering of an Fe-6wtpct B-48wt pct Mo alloy in the presence of liquid phases[J].Metallurgical Transactions A,1989,20(1):17-24.
【8】王永国,李兆前,张获.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.
【9】赵能伟,郑勇.高温耐磨抗氧化陶瓷材料的研究进展[J].硅酸盐通报, 2007,26(4):737-742.
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