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首页> 外文会议>World Tribology Congress III 2005 vol.2 >FRICTION AND WEAR BEHAVIOR OF SILICON CARBONITRIDE PROCESSED FROM THE POLYMER-DERIVED CERAMIC ROUTE
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FRICTION AND WEAR BEHAVIOR OF SILICON CARBONITRIDE PROCESSED FROM THE POLYMER-DERIVED CERAMIC ROUTE

机译：聚合物陶瓷路线产生的硅碳酸盐的摩擦和磨损行为

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摘要

Polymer derived ceramics (PDC's) are processed from liquid organometallic precursors by cross-linking the polymers into infusible solids, followed by controlled pyrolysis. No previous work regarding their tribology has been reported. Further, the synthesis of PDC's as thin films, and the role that the nanostructure plays on the mechanical properties has not been reported. The objective of this research was to evaluate the fundamental tribological behavior of polymer derived SiCN in both bulk and thin film form. Friction and wear evaluations were made on bulk materials and thin films using a Si_3N_4 ballon-disk linear wear tester at various contact pressures and in different environments that contained various amounts of humidity. The microanostructure was characterized by FTIR, microRaman, and scanning electron microscopy. Bulk SiCN gave a low friction coefficient and good wear resistance in humid environments but showed significant fracture and gouging in dry environments at higher contact pressures. Although there is ambiguity regarding the tribology of the thin films there seems to be a dependence upon the nitrogen content within the materials derived from the polymeric stage. The future work will focus on optimizing processing conditions of thin films and investigating the role that nitrogen plays in both bulk and thin film SiCN materials.
机译：聚合物衍生的陶瓷（PDC）是从液态有机金属前体加工而成的，方法是将聚合物交联成不溶性固体，然后进行受控的热解。没有关于其摩擦学的先前工作的报道。此外，尚未报道PDC作为薄膜的合成以及纳米结构对机械性能的作用。这项研究的目的是评估本体和薄膜形式的聚合物衍生的SiCN的基本摩擦学行为。使用Si_3N_4气球圆盘线性磨损测试仪在各种接触压力和不同湿度的环境下，对散装材料和薄膜进行了摩擦和磨损评估。显微/纳米结构通过FTIR，microRaman和扫描电子显微镜表征。块状SiCN在潮湿环境中具有较低的摩擦系数和良好的耐磨性，但在干燥环境中以较高的接触压力显示出明显的断裂和气刨。尽管在薄膜的摩擦学方面存在歧义，但似乎取决于衍生自聚合阶段的材料中的氮含量。未来的工作将集中在优化薄膜的加工条件上，并研究氮在块状和薄膜SiCN材料中扮演的角色。

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