【摘要】 研究了等离子渗氮压力对H13模具钢渗层组织、显微硬度和摩擦学性能的影响,对磨损后的显微形貌进行了分析,对磨损机理进行了探讨。结果表明:选择N2与H2的体积比为2∶1,渗氮温度为540℃,渗氮压力为1066 Pa的工艺条件,渗氮层厚度值最大,硬度曲线最平缓,摩擦因数低,磨损量最小,具有相对较好的耐摩擦磨损性能。更多还原

【Abstract】 Effect of plasma nitriding pressure on nitriding layer microstructure,microhardness and wear resistance of H13 tool steel was studied,morphologies were analyzed and wear mechanism was discussed.The results show that under the volume of nitrogen and hydrogen ratio 2∶1,nitriding temperature 540 ℃,nitriding pressure 1066 Pa,the nitriding thickness is the largest,the hardness profile is relatively flat,the friction coefficient is the lowest and the wear is the smallest,so the nitrided layer has good abrasion wear resistance.更多还原