| BN表面镀镍对Ni-Cr/BN减摩密封材料烧结性能的影响 |
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| 引用本文： | 韦小凤,王日初,彭超群,冯艳.BN表面镀镍对Ni-Cr/BN减摩密封材料烧结性能的影响[J].中南大学学报(自然科学版),2010,41(1). |
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| 作者姓名： | 韦小凤 王日初 彭超群 冯艳 |
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| 作者单位： | 中南大学,材料科学与工程学院,湖南,长沙,410083 |
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| 基金项目： | 国家民口配套科研项目 |
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| 摘 要： | 为改善减摩密封材料Ni-Cr/BN的烧结性能,在碱性条件下以硫酸镍为主盐、水合联氨为还原剂,采用化学镀方法在BN粉表面生成镀镍层;采用粉末冶金方法制备Ni-Cr/BN复合材料,并研究BN粉表面镀镍对Ni-Cr/BN烧结性能的影响。研究结果表明:在1000℃烧结时,BN粉表面镀上连续均匀的镀镍层能显著提高BN粉与Ni-Cr合金基体的润湿性,使Ni-Cr/BN减摩材料的抗拉强度由9.16MPa提高到27.88MPa,抗弯强度由21.40MPa提高到49.12MPa;但当烧结温度达到1100℃时,BN粉表面的镀镍层发生球化并脱落,镀镍层对Ni-Cr/BN减摩密封材料烧结性能的改善效果降低。
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| 关 键 词： | 氮化硼 减摩材料 镀镍 润湿性 球化 力学性能 |
Effect of BN surface plated nickel on sintering properties of Ni-Cr/BN antifriction sealing material |
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| WEI Xiao-feng,WANG Ri-chu,PENG Chao-qun,FENG Yan.Effect of BN surface plated nickel on sintering properties of Ni-Cr/BN antifriction sealing material[J].Journal of Central South University:Science and Technology,2010,41(1). |
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| Authors: | WEI Xiao-feng WANG Ri-chu PENG Chao-qun FENG Yan |
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| Institution: | WEI Xiao-feng,WANG Ri-chu,PENG Chao-qun,FENG Yan (School of Materials Science , Engineering,Central South University,Changsha 410083,China) |
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| Abstract: | To improve the sintering property of Ni-Cr/BN antifriction sealing material, the surface of boron nitride particles was plated with a nickel plating in the basic solution according to the reaction theory of electroless plating. The main salting was nickel sulfate, and the reducing material was hydrazine. The effect of coatings on the sintering properties of Ni-Cr/BN prepared by powder metallurgy technique was studied. The results show that the surface of boron nitride particles plated with a flat, continuou... |
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| Keywords: | boron nitride (BN) antifriction material nickel plating wettability globurizing mechanical properties |
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