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    • 4. 发明申请
    • FUNCTIONALLY GRADED ALUMINA-BASED THIN FILM SYSTEMS
    • 功能分级的基于铝的薄膜系统
    • WO2005113175A2
    • 2005-12-01
    • PCT/US2005/017818
    • 2005-05-19
    • COLORADO SCHOOL OF MINESMOORE, John, J.ZHONG, Dalong
    • MOORE, John, J.ZHONG, Dalong
    • B22C3/00
    • B22C3/00
    • The present invention provides coating systems that minimize thermal and residual stresses to create a fatigue-and soldering-resistant coating for aluminum die casting dies. The coating systems include at least three layers. The outer layer is an alumina or boro-carbide-based outer layer that has superior non-wettability characteristics with molten aluminum coupled with oxidation and wear resistance. A functionally-graded intermediate layer or “interlayer” enhances the erosive wear, toughness, and corrosion resistance of the die. A thin adhesion layer of reactive metal is used between the die substrate and the interlayer to increase adhesion of the coating system to the die surface.
    • 本发明提供了使热和残余应力最小化的涂层系统,以产生用于铝压铸模的疲劳和耐焊接涂层。 涂层系统至少包括三层。 外层是氧化铝或碳化硼的外层,其与熔融铝具有优异的非润湿性,同时具有抗氧化和耐磨性。 功能梯度中间层或“中间层”增强了模具的腐蚀磨损,韧性和耐腐蚀性。 在模具基板和中间层之间使用反应性金属的薄粘合层,以增加涂层体系与模具表面的粘合性。