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SiO_2-Al_2O_3-FeO体系中制备莫来石连续纤维 被引量:1

Preparing of Mullite Continuous Fiber from SiO_2-Al_2O_3-FeO System
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摘要 以Al2O3、SiO2、Fe2O3、Fe粉末为原料,通过熔融拉丝法制备了多晶莫来石连续纤维;通过XRD、SEM及EDS分析,讨论了莫来石纤维的形成过程及机理。结果表明,采用熔融法从SiO2-Al2O3-FeO体系中能够制备出组织形态为针状的莫来石连续纤维;含有一定玻璃相的纤维在20%的氢氟酸溶液中浸泡,烧结后能够得到莫来石质量分数较高的连续纤维。 Mullite continuous fibers were prepared by melt drawing method, using Al2O3 , SiO2, Fe2O3, Fe powder as main raw materials. Forming mechanism of the mullite was investigated by means of XRD, SEM and EDS, respectively. The resuits show that the mullite continuous fibers with needle structures, can be prepared from SiO2-Al2O3-FeO system, and high quality-fractional mullite continuous fibers can be obtained after dipping the fibers with definite glass phases in 20% hydrofluoric acid and then sintering.
出处 《金属热处理》 EI CAS CSCD 北大核心 2007年第6期30-33,共4页 Heat Treatment of Metals
基金 科技部国际合作重点项目(2005DFA70480)
关键词 SiO2-Al2O3-FeO体系 熔融拉丝法 制备 莫来石连续纤维 SiO2-Al2O3 -FeO system melt-drawing method preparation mullite continuous fiber
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