Abstract: The interface characteristics of refractory materials and molten alloys have long been studied for the selection of appropriate refractory materials for alloy smelting. Herein, the high-temperature wettability and permeability characteristics of nickel-based superalloys with white fused corundum, sintered magnesia-alumina spinel, and magnesia stabilized zirconia at 1 600 ℃ for 1 h under an Ar atmosphere were studied. The results indicate that the white fused corundum did not exhibit wetting with the nickel-based superalloy, with a contact angle of 92.1°. Furthermore, the surface morphology of the substrate remained unchanged, and the penetration depth was about 1.4 mm. However, wetting of white fused corundum occurred with sintered magnesium aluminium spinel, with a contact angle of 82.6° and substrate penetration depth of about 0.38 mm. In addition, the surface was eroded, depressed, and cracked. For the wetting of white fused corundum with magnesia stabilized zirconia, the contact angle was 52.9°, and the substrate surface remained intact with almost no permeability, but a large amount of contaminated alloy was formed. Based on a comprehensive analysis of performance and cost, white fused corundum and sintered magnesium aluminium spinel were identified as the primary raw materials, with magnesium stabilized zirconium oxide addtion to improve erosion resistance and permeability. The combination is expected to yield optimal refractory crucibles with superior performance and durability for high-temperature alloy smelting.
潘元帅, 王刚, 冯海霞, 柳军, 袁波, 田朋丹, 韩艺辉. 镍基高温合金与耐火材料界面特性研究[J]. 材料导报, 2025, 39(3): 22100206-7.
PAN Yuanshuai, WANG Gang, FENG Haixia, LIU Jun, YUAN Bo, TIAN Pengdan, HAN Yihui. Research on the Interface Properties of Nickel-based Superalloy and Refractories. Materials Reports, 2025, 39(3): 22100206-7.
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2025, Vol. 39 
