(1. 華南理工大學(xué) 機(jī)械與汽車工程學(xué)院，廣州 510640；
2. 海南大學(xué) 機(jī)電工程學(xué)院，海口 570228)
摘 要: 通過鋁液中的靜態(tài)腐蝕，高溫下的摩擦磨損和鋁液中的腐蝕-磨損試驗(yàn)，對(duì)鎢和H13鋼的耐鋁液腐蝕-磨損性能和機(jī)理進(jìn)行研究。結(jié)果表明：鎢在鋁液中的平均腐蝕速率約為H13鋼的1/14，在高溫下的摩擦磨損性能與H13鋼的相當(dāng)，在腐蝕-磨損條件下鎢的材料損失率僅約為H13鋼的1/24，遠(yuǎn)遠(yuǎn)優(yōu)于H13鋼的耐鋁液腐蝕-磨損性能。在腐蝕-磨損過程中，試驗(yàn)材料均發(fā)生了磨粒磨損，而鎢的腐蝕-磨損表面生成的產(chǎn)物起到了很好的保護(hù)基體材料的作用。腐蝕和磨損的交互作用是造成試驗(yàn)材料在腐蝕-磨損條件下材料損失急劇增大的主要原因。
關(guān)鍵字: 鎢；H13鋼；鋁液；腐蝕；磨損
（1. School of Mechanical and Automotive Engineering, South China University of Technology, Guangzhou 510640, China;
2. Institute of Electrical and Mechanical Engineering, Hainan University, Haikou 570228, China）
Abstract:The corrosion-wear resistant performance and mechanisms of tungsten and H13 steel in molten aluminum were investigated through static corrosion in molted aluminum, friction-wear tests in air at high temperature, and corrosion-wear experiments in molten aluminum. The results show that the average corrosion rate of tungsten in molten aluminum is about 1/14 of H13 steel’s, and the performances of these two materials at high temperature friction-wear condition are nearly the same. The loss rate of tungsten under corrosion-wear condition is only about 1/24 of H13 steel’s, demonstrating that the corrosion-wear resistance of tungsten is much superior to that of H13 steel. Abrasive wear occurs in the corrosion-wear tests of these two experimental materials. In addition, the matrix is well protected by reaction products of tungsten on the corrosion-wear surface. The interaction behavior of corrosion and wear under corrosion-wear condition is the main reason for the rapid increment mass loss of the test materials.
Key words: tungsten; H13 steel; molten aluminum; corrosion; wear
