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.
用显微硬度仪测定合金的硬度，分析其硬度随氧化时间变化的情况，绘制该钢的显微硬度随时间变化的曲线。
The hardness of the alloy following the change of time was analyzed by micro- hardness instrument and the alloy's hardness curve following the change of time was drawn.
采用宏观分析、显微检验和硬度测定对压铸模进行了失效分析。
This failure analysis was performed by using macro check, micrography and hardness measurement.
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.
采用超音速电弧喷涂设备在不同工艺参数条件下制备JCW - S - AM涂层，利用显微硬度计测定各种涂层的显微硬度。
The microhardness of JCW-S-AM coatings prepared by high velocity electric arc spraying on conditions of different process parameters was tested by hardometer.
用显微硬度、电子拉伸等试验方法，测定了银、铜、钽的硬度、抗拉强度、延伸率与冷加工变形量的关系及冷加工态银、铜、钽退火软化曲线。
The hardness, tensile strength and elongation of Ag, cu and Ta, their relationship with the degree of cold work and soften annealing curves of cold-worked Ag, cu and Ta were investigated.
通过扫描电镜、X射线衍射及硬度测量，对镀层在稳定化处理过程中的显微组织及硬化效应进行了测定与分析。
The microstructure and hardening behavior of the NiP deposit during stabilizing treatment were determined and analysed by SEM, Xray diffraction and hardness measurement.
利用金相显微镜和SEM研究了合金的形貌，利用EDS和XRD研究了合金的成分，并测定了合金的密度和硬度。
The microstructure was observed through optical microscope and SEM. The composition was studied by EDS and XRD. And the density and hardness were also measured.
测定了不同工艺条件下获得的浸渗层深度和浸渗层显微硬度的分布。
The depth and microhardness distribution of alumetizing layer obtained on different technical conditions were measured.
借助EPMA，XRD和显微硬度计测定了熔覆涂层的化学成份、显微组织和显微硬度。
The composition, microstructure, and hardness of the ceramal layer were analysed with the help of EPMA, XRD and a microhardness measuring instrument.
研究了工业纯铁、20钢、45钢辉光离子渗铝层生长规律，测定了渗层铝浓度分布和显微硬度分布。
The growing principle of aluminizing layer is given for in-got iron, steel 20 and 45.
采用维氏显微硬度仪测定经饮料浸泡后牙釉质表面显微硬度的变化。
The enamel surface microhardness was measured by a Leitzs microhardness tester.
观察其显微组织和晶粒度，测定其显微硬度，分析了金相组织、晶粒度和硬度随固溶退火温度、保温时间、冷却速度的变化。
The microstructure was observed and the grain size and Vickers hardness were measured, the changes of microstructure, grain size, hardness and solid solution annealing process were discussed.
观察其显微组织和晶粒度，测定其显微硬度，分析了金相组织、晶粒度和硬度随固溶退火温度、保温时间、冷却速度的变化。
The microstructure was observed and the grain size and Vickers hardness were measured, the changes of microstructure, grain size, hardness and solid solution annealing process were discussed.
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