Comparative study of micro topography on laser ablated C/SiC surfaces with typical uni-directional fibre ending orientations
Comparative study of micro topography on laser ablated C/SiC surfaces with typical uni-directional fibre ending orientations
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激光烧蚀 C/SiC 表面微形貌与典型单向光纤末端方向的比较研究
DOI：
10.1016/j.ceramint.2016.01.173
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发表时间：
2016-05
影响因子：
5.2
通讯作者：
Xu HZ
中科院分区：
文献类型：
--
作者：
Wu ML;Ren CZ;Xu HZ
激光烧蚀碳纤维增强复合材料表面的功能微结构具有明显的优势。C/SiC复合材料截面上可能存在多种不同取向的纤维末端，其各向异性的特点对激光烧蚀工艺提出了新的挑战。然而，很少有报道描述的纤维末端的取向对激光烧蚀的C/SiC表面形貌的影响，在这项调查中，建立了三个典型的C/SiC表面的激光烧蚀的微脊，并进行了比较研究，以确定这些激光烧蚀的C/SiC表面的形貌变化。结果表明，不同纤维末端取向的C/SiC表面经激光烧蚀后呈现出不同的表面特征（Sz，Sq）。虽然所有的激光烧蚀过程在本质上是相似的，但纤维末端的变化使激光与材料的相互作用有很大的不同。在对碳纤维增强复合材料进行激光烧蚀之前，应注意纤维末端取向对表面形貌形成的影响。最后，对激光烧蚀表面的一些典型缺陷进行了讨论。
Functional micro-structures on laser-ablated carbon fibre reinforced composites surfaces exhibit distinct advantages. A variety of fibre endings with different orientations may coexist on the C/SiC sectional plane, the anisotropic nature of C/SiC (carbon fibre reinforced silicon carbide) composites present a new challenge to the laser ablation process. However, few reports describing the influence of the fibre ending orientations on the laser-ablated C/SiC surface topography could be found. In this investigation, micro-ridges were established on three typical C/SiC surfaces by laser ablation, and a comparative study was performed to identify the topography variations on these laser-ablated C/SiC surfaces. The results showed that C/SiC surfaces with different fibre ending orientations present distinct surface characters (Sz,Sq) after laser ablation. Although all of the laser ablation processes are similar in nature, the fibre ending variation made the laser and material interaction different greatly. Attention should be devoted to the influence of the fibre ending orientation on surface topography formation before performing the laser ablation of carbon fibre reinforced composite materials. Finally, some typical surface defects on these laser-ablated surfaces were also discussed.
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通讯作者：
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