(1. 貴州大學(xué) 機(jī)械工程學(xué)院，貴陽 550025；
2. 華南理工大學(xué) 國家金屬材料近凈成形工程技術(shù)研究中心，廣州 510640)
摘 要: 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(chǎn)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(jī)理。結(jié)果表明：H13鋼在鋁液中熔蝕-磨損的材料流失量遠(yuǎn)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(shí)驗(yàn)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(zhì)、生成速度及其與基體的界面結(jié)合情況所決定。
關(guān)鍵字: 熔蝕-磨損；金屬間化合物；交互作用；鋁液
（1. School of Mechanical Engineering, Guizhou University, Guiyang 550025, China;
2. School of Mechanical and Automotive Engineering, South China University of Technology, Guangzhou 510640, China）
Abstract: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.
Key words: corrosion-wear; intermetallics; synergy; molten aluminum
