The effect of SrSO4 and BaSO4 on the corrosion and wetting by molten aluminum alloys of mullite ceramics
作者： M.N. Ibarra Castro , J.M. Almanza Robles , D.A. Cortés Hernandez , J.C. Escobedo Bocardo , J. Torres Torres
DOI: 10.1016/J.CERAMINT.2010.01.015
关键词: Metallurgy 、 Celsian 、 Wetting 、 Alloy 、 Aluminosilicate 、 Mullite 、 Contact angle 、 Aluminium 、 Corrosion 、 Materials science
摘要: In order to improve the corrosion resistance of aluminosilicate refractories by molten aluminum, SrSO4 and BaSO4 powders were used. Mullite substrates with without addition 20 wt.% or sintered at 1400 °C for 6 h. Corrosion wetting experiments pure Al Al–7.5Si carried out 900 °C 24 h 2 h, respectively. The layer was thicker in mullite sample (≥2 mm) than that SrSO4- BaSO4-containing samples (<50 μm). contact angles containing higher (≈118° 149°) those (≈109° 127°), both aluminum Al–7Si alloy. This increase angle improves means non-wetting effect.
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