复合材料工艺的研究工作很多,这里只简单地对硼—铝材料的制备工艺作一简介,因为硼纤维还将用碳化硅和氮化硼涂层,所以也略介绍碳化硅纤维的有关问题。 (一)硼纤维的制取目前有四种方法: 1.用H_2还原氯化硼沉积在加热的钨丝上; 2.氢化硼(B_2H_6)热解; 3.有机硼化物的热解; There are a lot of research work on the composites technology. Here we only briefly introduce the preparation process of the boron-aluminum material. Since the boron fiber will be coated with silicon carbide and boron nitride, we also introduce the related problems of the silicon carbide fibers. (A) Preparation of boron fiber At present, there are four ways: 1. H_2 reduction of boron chloride deposited on the heated tungsten filament; 2. Boron hydride (B_2H_6) pyrolysis; 3. Organoboron pyrolysis;