Nano Si3N4 composites with improved tribological properties
Nano Si3N4 composites with improved tribological properties
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DOI：
10.1002/ls.72
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发表时间：
2009-02
影响因子：
1.9
通讯作者：
I. Schulz;M. Herrmann;I. Endler;I. Zalite;B. Speisser;Johannes Kreusser
中科院分区：
文献类型：
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作者：
I. Schulz;M. Herrmann;I. Endler;I. Zalite;B. Speisser;Johannes Kreusser
采用超细Si3N4粉末制备了具有定制显微结构的纳米Si3N4复合材料。研究了它们的磨损行为。纯Si3N4复合材料在有滑动的干滚动条件下表现出改善的磨损行为，而TiN增强的纳米Si3N4复合材料在干滑动条件下产生自润滑行为。经硫化氢化学处理后，在干摩擦条件下的摩擦系数和磨损率显着降低。此外，新的复合材料具有更高的断裂韧性比纯纳米氮化硅材料。版权所有© 2009约翰威利父子有限公司。
Nano Si3N4 composites with tailored microstructure were developed using fine ß‐Si3N4 powders. Their wear behaviour was investigated. Whereas pure Si3N4 composites showed improved wear behaviour under dry rolling conditions with slip, TiN‐reinforced nano Si3N4 composites generate a self‐lubricating behaviour under dry sliding conditions. After chemical treatment with hydrogen sulphide, the friction coefficient and wear rate was found to be significantly decreased under dry sliding conditions. Additionally, the new composites possess higher fracture toughness than the pure nano Si3N4 materials. Copyright © 2009 John Wiley & Sons, Ltd.