摘要
玻璃纤维核化晶化的研究从七十年代初兴起。微晶化被作为改善纤维力学性能、耐高温性能、抗化学腐蚀性能的一种崭新途径,到目前为止,工艺方面的摸索居多,而理论研究极少。1980年,Jones & McMillan研究了微晶化对Li<sub>2</sub>O-SiO<sub>2</sub>系统玻璃纤维抗拉强度的影响,发现随热处理温度的升高和时间的延长,纤维抗拉强度都逐渐降低。1981年起,Meriani、Benedetti等人系统地研究了Li<sub>2</sub>O-ZnO-SiO<sub>2</sub>系统微晶玻璃纤维的核化晶化机理,发现Li<sub>2</sub>O·SiO<sub>2</sub>在纤维表面具有定向作用,其（002）面平行于纤维表面,形成垂直于纤维轴向的棒状晶体,并且晶化前进行核化处理可以削弱这种定向效应。1983年。
Glass-ceramic fiber is a new inorganic fiber which has been studied since early 70's to improve its mechanical property and refractory property as well as chemical durability of glass fiber by crystallizing. But only a little theoretical work has been done since that. In this paper, effects of heat treatment on the tensile strength of Li2O-Al2O3-SiO2-B2O3 system glass fiber (diam. 20~22μ) has been studied by SEM and TBM. It is shown that the tensile strength of glass fiber decreases gradually as the heat treatment temperature rises until bar-like crystals appear in the fiber at about 450℃, then the tensile strength of glass fiber begins to increase and reaches its maximum at about 480℃.
出处
《玻璃与搪瓷》
CAS
北大核心
1989年第6期7-11,共5页
Glass & Enamel
基金
中国科学院科学基金
