以Al2O3、SiO2、Na2CO3粉末为原料,通过熔融拉丝法制备了莫来石连续纤维;通过X-ray衍射、扫描电镜、能谱及差示扫描量热法(DSC)等分析,讨论了莫来石纤维的形成过程及机理.实验表明,采用熔融法,从Si2-Al2O3-Na2O体系中能够制备出组织形态为针状的莫来石连续纤维,纤维的主晶相为莫来石和玻璃相;部分玻璃相在热处理过程中能够转变为莫来石晶相,从而进一步提高了纤维的耐火度.
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