磷酸锆对铜铋-钢背双层金属复合材料性能的影响OA北大核心CSTPCD

The copper-bismuth(CuBi)-steel-backed double-layer metal composite plates were prepared by the sintering and press-rolling 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).