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目前用于长纤维增强复合材的SiC有两种:一种是美国航空公司(AVCO)制造的,称之为SCSi(i=2,6,8,9)长纤维,另一种是英国BP公司制造的,称之为SM1240和SM1140的长纤维.研究采用SM1240长纤维,即具有钨芯和涂有碳(1.42μm厚)和TiBx(0.65μm厚)双重涂层的SiC纤维,与80～100μm厚的Ti—6Al—4V箔材在1173K下热等静压制得复合材.利用扫描电镜(SEM),透射电镜(TEM),透射电子能耗谱(EELS)以及俄歇电子谱(AES)和扫描俄歇电子显微镜(SAM)等方法,观察分析复合材界面扩散层的组织结构及元素分布等.
There are two types of SiC currently used for long fiber reinforced composites: one manufactured by American Airlines (AVCO), referred to as SCSi (i = 2,6,8,9) long fibers, and the other being British BP Made of SM1240 and SM1140.The SM1240 long fiber, a SiC fiber with a tungsten core and a dual coating of carbon (1.42 μm thick) and TiBx (0.65 μm thick) 100μm thick Ti-6Al-4V foils were hot isostatically pressed at 1173K to obtain composites.Using scanning electron microscopy (SEM), transmission electron microscopy (TEM), transmission electron energy spectroscopy (EELS) and Auger electron spectroscopy (AES) And scanning Auger electron microscopy (SAM) and other methods to observe the composite interface diffusion layer structure and elemental distribution.