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 hardness gradient, depth, microstructure and phases of nitrided layers were measured with Microhardness Apparatus, Microcopy and X-ray diffractometer.

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采用SEM、X射线、光学显微镜、显微硬度计等手段研究了高能密度光束表面合金化的机理和工艺。

In this paper the mechanism and process of light beam surface alloying were investigated by SEM, X-ray diffraction, optical microscope, microhardness etc.

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采用宏微观检验、显微硬度测定、X射线衍射等方法对汽车发动机连杆轴瓦的失效进行了分析。

Macro examination, metallographic microscope, microhardness tester and X ray diffractometer were utilized to study the failure reasons for connecting rode bearing bush of automobile engine.

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