磷酸锆对铜铋-钢背双层金属复合材料性能的影响  

Effect of ZrP on properties of CuBi-steel-backed double-layer metal composites

作　　者：丁晓龙 杨兆方 郑合静 DING Xiaolong;YANG Zhaofang;ZHENG Hejing(Hefei Bolin Advanced Materials Co.,Ltd.,Hefei 230088,China)

机构地区：[1]合肥波林新材料股份有限公司,合肥230088

出　　处：《粉末冶金技术》2024年第2期128-134,共7页Powder Metallurgy Technology

摘　　要：采用烧结压轧复合工艺制备了铜铋-钢背双层金属复合材料板材,研究了磷酸锆对铜铋-钢背复合材料板材结合强度、硬度及摩擦学性能的影响。结果表明:磷酸锆的添加可以有效改善铜铋-钢背复合材料板材减摩耐磨性能,并能够提升其抗承载能力。随着磷酸锆质量分数的增加,铜铋-钢背复合材料板材的结合强度逐渐减小,硬度先增大后减小。在定速定载寿命试验中,与未添加磷酸锆的铜铋-钢背复合材料板材相比,添加质量分数为2%和4%的磷酸锆可以有效改善铜铋-钢背复合材料板材的减摩耐磨性能,降低摩擦副摩擦系数,有利于表面温升。在定速变载荷试验中,磷酸锆的添加可以显著提升铜铋-钢背双层材料的摩擦抗承载能力。在端面油循环条件下,添加质量分数4%磷酸锆的铜铋-钢背复合材料板材极限PV值(摩擦副接触面压强与摩擦线速度乘积)可以达到14 MPa∙m∙s^(-1),而未添加磷酸锆的铜铋-钢背复合材料板材极限PV值仅8 MPa∙m∙s^(-1),提升约75%。The copper-bismuth(CuBi)-steel-backed double-layer metal composite plates were prepared by the sintering and pressrolling composite technology,the effect of zirconium phosphate(ZrP)on the bonding strength,hardness,and tribological properties of the CuBi-steel-backed composite plates was studied.In the results,the addition of ZrP can effectively improve the anti-friction and wear resistance of the CuBi-steel-backed composite plates and enhance the load-bearing capacity.As the ZrP mass fraction increases,the bonding strength of the CuBi-steel-backed composite plates gradually decreases,and the hardness first increases and then decreases.In the constant speed and load test,compared with the CuBi-steel-backed composite plates without ZrP,the addition of 2%and 4%ZrP by mass can effectively improve the friction and wear resistance of the CuBi-steel-backed composite plates,reduce the friction coefficient of the friction pair,and rise the surface temperature.In the constant-speed variable-load test,the addition of ZrP can significantly improve the frictional bearing capacity of the CuBi-steel-backed double-layer materials.Under the condition of end face oil circulation,the limit PV value(friction pair contact surface pressure×friction linear velocity)of the CuBi-steel-backed composite plates by adding ZrP with the mass fraction 4%reaches 14 MPa∙m∙s^(-1),which is about 75%higher than that without ZrP(8 MPa∙m∙s^(-1)).

关 键 词：磷酸锆 双层金属复合材料 自润滑 摩擦学特性 

分 类 号：TF125[冶金工程—粉末冶金] TB331[冶金工程—冶金物理化学]