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    杨发平. ZG45铸钢表面Ni/ZrO2复合铸渗层的组织与耐磨性能[J]. 机械工程材料, 2011, 35(8): 1-4.
    引用本文: 杨发平. ZG45铸钢表面Ni/ZrO2复合铸渗层的组织与耐磨性能[J]. 机械工程材料, 2011, 35(8): 1-4.
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    YANG Fa-Ping. Microstructure and Wear Resistance of the Ni/ZrO2 Composite Casting-Infiltration Layer on ZG45 Catt Steel Surface[J]. Materials and Mechanical Engineering, 2011, 35(8): 1-4.
    Citation: YANG Fa-Ping. Microstructure and Wear Resistance of the Ni/ZrO2 Composite Casting-Infiltration Layer on ZG45 Catt Steel Surface[J]. Materials and Mechanical Engineering, 2011, 35(8): 1-4.
    shu

    ZG45铸钢表面Ni/ZrO2复合铸渗层的组织与耐磨性能

    Microstructure and Wear Resistance of the Ni/ZrO2 Composite Casting-Infiltration Layer on ZG45 Catt Steel Surface

      摘要
    • 摘要: 采用负压铸渗技术在ZG45铸钢表面制备了Ni/ZrO2 复合铸渗层, 并对其显微组织、硬度以及常温摩擦学性能进行了研究。结果表明:铸渗层的主要相组成为ZrO2, Cr2B, NiB化合物和Fe(Ni)固溶体相;其表面硬度可达60~64HRC, 显微硬度由铸渗层表面至基体呈梯度变化, 最大硬度在铸渗层的次表层, 最大值为8.5GPa;在100N 和250N 载荷下基体的磨损率分别是铸渗层的22.6倍和21.9倍。

       

      Abstract: Ni/ZrO2 composite casting-infiltration layer on ZG45 steel surface was prepared by negative pressure technology. The microstructure, hardness and tribology property at room-temperature of composite casting-infiltration layer were studied. The results show that the main phases of the composite casting-infiltration layer were ZrO2, Cr2B, NiB, and Fe(Ni). The surface hardness of composite casting-infiltration layer couldreach 60-64HRC, and the microhardness presented change of gradient from the surface of casting-infiltration layer to substrate. The zone with maximum value was the subsurface of casting-infiltration layer and the maximum value was 8.5 GPa. The wear rate of the substrate under the load of 100 N and 250 N were 22.6 and 21.9 times of casting-infiltration layer respectively.

       

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