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
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。
显微组织
硬度
摩擦学性能
Ni/ZrO2 composite casting-infiltration layer
microstructure
hardness
tribology property
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.
中图分类号 TG174.445
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收稿日期 2010/8/19
修改稿日期 2011/6/30
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备注杨发平(1964-), 男, 四川达州人, 高级工程师, 学士。
引用该论文: YANG Fa-Ping. Microstructure and Wear Resistance of the Ni/ZrO2 Composite Casting-Infiltration Layer on ZG45 Catt Steel Surface[J]. Materials for mechancial engineering, 2011, 35(8): 1～4
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
被引情况:
【1】程仕李,钟黎声,付永红,王亮亮, "灰铸铁表面碳化钨层的制备与耐磨性能",机械工程材料 40, 16-20(2016)
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