mould with gradient hardness 梯度硬度模具
The hardness gradient, depth, microstructure and phases of nitrided layers were measured with Microhardness Apparatus, Microcopy and X-ray diffractometer.
利用显微硬度计、金相显微镜和X射线衍射仪测定了渗氮层的硬度梯度、层深、显微组织和相组成。
The results showed that the hardening layer has better hardness gradient and high wear resistance.
结果表明，表面熔化处理后的硬化层的硬度梯度平缓，耐磨性高。
The result showed that there was obvious gradient in the distribution of the hardness and microstructure of the composite layer.
研究结果表明，复合材料层的硬度及显微组织分布均存在明显的梯度。
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