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。
The hardness distribution without obviously declining gradient in one range of the hardened layer produced by plasma quenching is rather different from that by conventional quenching.
等离子表面淬火硬化层的硬度分布，在某一区域内无明显的硬度梯度，这与常规淬火方法的结果不太一样。
The result shows that the argon gas can effectively decrease the hardness gradient and improve the thermal fatigue behavior of ion nitriding steel H13.
结果表明：氩气能有效降低渗层的硬度梯度，提高离子渗氮h 13钢的热疲劳性能。
The results show that, compared with the boronizing, the case of RE B Ti coating has higher microhardness and smoother hardness gradient;
和纯渗硼层相比，发现共渗层具有高的显微硬度和低的硬度梯度、高耐磨性和热疲劳性；
The result showed that the centrifugal casting made the WC particles appear gradient distribution, the hardness of composites displayed gradual lower inward, and the transition zone was strengthened.
结果表明，离心铸造使WC颗粒呈梯度分布，硬度由表及里呈现逐渐降低的趋势，过渡区得到强化；
High heat treatment performance of roller sleeve (1), uniform hardness, reasonable hardness gradient, thus ensure the long service life of inlaid backup roller.
辊套(1)的热处理性能好，硬度均匀，硬度梯度从表面层向芯部下降梯度小。因此镶套支承辊的使用寿命长。
The results show that the distribution of macro-hardness presents gradient change, the subsurface layer's hardness is highest, its is 542 HV.
结果表明：渗层到基体的显微硬度呈梯度变化，最高硬度出现在亚表层，硬度为542HV ；
Vickers hardness (HV2) along the gradient changes regularly from high to low, then from low to high, corresponding to the microstructure change in the alloy.
合金截面的小负荷维氏硬度出现由高变低再由低变高的规律性变化， 与合金内部微观组织结构的变化相对应。
The hardness and wear resistance of Al 20Si alloy FGM reduced gradually from the inside to the outside of the specimen, changed in gradient.
材料内层硬度较高、耐磨性较好，由内向外硬度逐渐减小、耐磨性变差，呈梯度变化。
The hardness and wear resistance of Al 20Si alloy FGM reduced gradually from the inside to the outside of the specimen, changed in gradient.
材料内层硬度较高、耐磨性较好，由内向外硬度逐渐减小、耐磨性变差，呈梯度变化。
应用推荐