磷含量对青铜基含油轴承力学性能与摩擦性能的影响  

Effect of phosphorus content on the mechanical and friction properties of oil-impregnated bronze bearings

作　　者：范心怡 胡林桂 邓泽浩晨 杨加其 申小平 FAN Xinyi;HU Lingui;DENG Zehaochen;YANG Jiaqi;SHEN Xiaoping(School of Material Science and Engineering,Nanjing University of Science and Technology,Nanjing 210094,China;Engineering Training Center,Nanjing University of Science and Technology,Nanjing 210094,China)

机构地区：[1]南京理工大学材料科学与工程学院,南京210094 [2]南京理工大学工程训练中心,南京210094

出　　处：《粉末冶金技术》2024年第2期200-206,共7页Powder Metallurgy Technology

基　　金：国家级本科生科研训练项目。

摘　　要：以青铜作为轴承基体,通过改变磷含量(0~1%,质量分数)和烧结温度,在一定转速和载荷下,测量轴承的摩擦系数和磨损量,并测定了轴承的开环强度,研究了磷含量对青铜基含油轴承的摩擦性能和力学性能的影响,获得一定工作条件下轴承配方和烧结工艺参数。结果表明:随着磷含量的增加,含油轴承的磨损量降低,力学性能提高,但磷含量过高时,轴承的含油率降低并低于轴承最低标准;随着烧结温度的增加,试样力学性能提高,但摩擦因数不稳定。当磷质量分数为0.7%、烧结温度为650℃时,含油轴承拥有良好的综合性能,开环强度和含油率分别为22 MPa和13.52%,摩擦因数稳定,呈最佳烧结状态。Oil-impregnated bronze bearings with the different phosphorus contents(0~1%,mass fraction)were produced at the different sintering temperatures.To study the effect of P content on the friction and mechanical properties of the bearings,the friction coefficient and wear loss at the certain speed and load were measured,and the open-loop strength of bearings was examined.In addition,the optimized bearing content and sintering process parameters under the certain working conditions were obtained.The results show that,with the increase of P content,the wear loss of the bearings reduces,while the mechanical performances are improved.However,when the P content is excessed,the oil content reduces which is lower than the minimum standard.As the sintering temperature increases,the mechanical properties of the bearings are improved,but the friction coefficient is unstable.The open-loop strength and oil content of the oil-impregnated bronze bearing samples with 0.7%P content by mass after sintering at 650℃are 22 MPa and 13.52%,respectively,showing the good comprehensive performance as the stable friction factor and the best sintering state.

关 键 词：青铜 含油轴承 磷含量 力学性能 摩擦性能 

分 类 号：TF125[冶金工程—粉末冶金] TG146.1[冶金工程—冶金物理化学]