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Effect of QPQ Nitriding Parameters on Properties of Pearlite Ductile Cast Iron

机译:QPQ氮化参数对珠光体铸铁性能的影响

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摘要

The effects of nitriding temperature and time on properties of pearlite ductile cast iron were studied by wear and corrosion resistance tests. The results show that the main phases of oxide layer are Fe3O4 and Li2Fe3O4, and the main phases of compound layer are Fe3N and Fe4N. With the increase of nitriding temperature, the micro-hardness and wear resistance increase first and then decrease. The micro-hardness and wear resistance increase continuously with the prolongation of nitriding time. The corrosion resistance of the sample is relatively good when nitriding at 640 degrees C for 120 min.
机译:耐磨性试验研究了氮化温度和时间对珠光体铸铁性能的影响。 结果表明,氧化物层的主要相是Fe3O4和Li 2 Fe 3 O 4,复合层的主要相是Fe3N和Fe4N。 随着氮化温度的增加,微硬度和耐磨性首先增加然后减少。 微硬度和耐磨性连续增加,随着氮化时间的延长而延长。 当在640℃下氮化120分钟时,样品的耐腐蚀性相对较好。

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