H13鋼在鋁液中的熔蝕-磨損行為與交互作用機理H13鋼在鋁液中的熔蝕-磨損行為與交互作用機理Corrosion-wear behavior and synergy mechanism of H13 tool steel in molten aluminum 通過對比分析H13鋼在高溫干摩擦磨損及熔蝕-磨損兩種條件下的磨痕形貌、磨損產物及材料流失特征，研究H13鋼在鋁液中的熔蝕-磨損行為以及腐蝕與磨損的交互作用機理。結果表明：H13鋼在鋁液中熔蝕-磨損的材料流失量遠高于其單純腐蝕及單純磨損條件下材料流失量之和。在本實驗條件下，熔蝕與磨損的交互作用率均不小于93.9%。對已生成界面金屬間化合物為典型腐蝕特征的這一類材料而言，其在鋁液中的熔蝕-磨損性能主要由界面金屬間化合物的性質、生成速度及其與基體的界面結合情況所決定。 Through analyzing and comparing the surface morphologies, wear debris and material loss of H13 tool steel both under high temperature dry sliding wear and corrosion-wear in molten aluminum conditions, the corrosion-wear behavior and synergy mechanism between corrosion and wear of H13 tool steel in molten aluminum were investigated. The results show that the material loss of corrosion-wear is much higher than the total material loss of purely corrosion and purely wear. The synergy rate of corrosion-wear is not less than 93.9% in our experiments. For those materials, the typical corroded feature is to generate intermetallic compound layer between the substrate and molten aluminum, the corrosion-wear resistance of material is depended on the formation rate and characterization of intermetallic compound layer, as well as the combination between the substrate and the intermetallic zone.
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