碳纤维表面氮化硼涂层的制备

Formation of BN Coating on PAN Carbon Fiber

用先驱体转化法,在碳纤维表面制备了涡轮层状氮化硼(t-BN)涂层。用SEM,XRD,IR等测试手段对涂层的结构、形貌进行了表征,并且测试了纤维的单丝拉伸强度。实验证明以硼酸为原料,利用先驱体转化法在碳纤维上成功地制备了连续且均匀的t-BN涂层;在氮气气氛中加入还原性气体,使得氮化硼涂层的热处理温度降低到400℃;碳纤维拉伸度基本得到保持。

By means of precursor conversion method, the turbostratic boron niteide（t BN） coating was formed on the surface of carbon fiber. The surface morphology, structure of the coating were characterized by SEM, XRD, IR, and the tensile strength was tested. Experiments show that the continuous and uniform t BN thin coating is successfully deposited on carbon fiber by dip-coating in boric acid; The heat treatment temperature is reduced to 400 ~C by adding a reducing atmosphere of in nitrogen atmosphere; The tensile strength is almost maitained.