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首页> 外文期刊>Journal of Materials Science >The processing of SiC SiC ceramic matrix composites using a pulsed Nd-YAG laser Part II The effect of process variables
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The processing of SiC SiC ceramic matrix composites using a pulsed Nd-YAG laser Part II The effect of process variables

机译：脉冲Nd-YAG激光加工SiC SiC陶瓷基复合材料第二部分工艺变量的影响

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摘要

The machining of a composite material consisting of silicon carbide (SiC) fibres in a chemical-vapour-infiltrated SiC matrix has been investigated using a 400 W pulsed Nd-doped yttrium aluminium garnet laser. Part I of this work reported the findings of investigating the influence of the laser pulse parameters, principally with respect to the material removal rate. In this, the analysis concentrates on the quality of the processed surface and considers the effect of processing variables such as the choice and pressure of assist gas and the point of focus of the incident laser beam. Scanning electron microscopy is used to assess the extent of the heat-affected zone and its impact on the structural integrity of the composite. Throughout this study, comparison is made with related ceramic matrix composites (CMCs) that have been investigated. The intention is that, by determining the influential factors in each of the specific cases, observations may be made concerning the laser processing of CMC material systems in general. (C) 1998 Chapman & Hall. [References: 9]
机译：使用400 W脉冲掺钕钇铝石榴石激光器研究了在化学气相渗透的SiC基体中加工由碳化硅（SiC）纤维组成的复合材料的方法。这项工作的第一部分报告了调查激光脉冲参数影响的发现，主要是关于材料去除率的调查。在此，分析着重于加工表面的质量，并考虑加工变量的影响，例如辅助气体的选择和压力以及入射激光束的焦点。扫描电子显微镜用于评估热影响区的范围及其对复合材料结构完整性的影响。在整个研究过程中，将与已研究的相关陶瓷基复合材料（CMC）进行比较。目的是通过确定每种特定情况下的影响因素，可以观察到一般而言对CMC材料系统的激光加工的观察。 （C）1998查普曼和霍尔。 [参考：9]

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