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Effect of SiAION addition on high temperature property of magnesia-based castables
Author(s): 
Pages: 44-46,53
Year: Issue:  1
Journal: REFRACTORIES

Keyword:  SiAlONMgO基浇注料高温力学性能热震稳定性;
Abstract: 以电熔镁砂为骨料,以电熔镁砂细粉、电熔白刚玉、矾土基β-SiAlON、α-Al2O3微粉和SiO2微粉为基质,固定电熔镁砂骨料与基质的质量比,并固定基质中各成分的质量分数,基质中用SiAlON逐步取代刚玉细粉,试样经1600℃3 h烧成后,考察SiAlON加入量(0、2.5%、5%、7.5%、10%)对浇注料热震稳定性、高温抗折强度(1400℃)等性能的影响,并对试样进行扫描电镜和能谱分析.结果表明:由于SiAlON的引入,在MgO基浇注料基质中起到了强化增韧作用,提高了浇注料的抗热震性能和高温抗折强度.
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