硼纤维的研究概述

Study on boron fiber: review

采用化学气相沉积法（CVD）制备硼纤维.硼可沉积于钨丝、玻璃或石墨长丝上.采用此种方法得到的硼纤维的公称直径为0.1～0.2 mm.硼纤维密度低、拉伸强度高、弹性模量较高,且纤维非常硬,其硬度是玻璃纤维的5倍.高硬度使硼纤维难以进行织造或编织,但其可制成树脂浸渍带,用于手糊成型和纤维卷绕加工.硼纤维的高成本限制了它在实验型飞机和航空航天领域的应用.

Boron filaments produced by a chemical vapor deposition（ CVD） process. Boron can be deposited on a tungsten wire core,and on a glass or graphite filament core. The filaments thus produced have nominal diameters ranging from 0. 1 ~ 0. 2 mm. They are characterized by low density,high tensile strength and high modulus of elasticity. They are extremely stiff,e. g. 5 times stiffer than glass fibers. This stiffness makes boron filaments difficult to weave,braid or twist,but they can be formed into resin impregnated tapes for hand lay-up and filament winding processes. The high cost of boron filaments has limited their use to experimental aircraft and aero-space applications.