Study on interface bonding properties of Ni-gate layer enhanced alloy layer
With the development of heavy machinery such as wire rolling mill to heavy load and high speed,the service performance of plain bearings is more stringent.Under the condition of high speed and heavy load,the bearing is easy to wear,burn and even fall off the wear reduction layer.Adding nickel gate layer between alloy layers can effectively enhance the binding energy between alloy layers and reduce the probability of abrasion reduction layer falling off,which is one of the methods to solve the above problems.Taking the plain bearings of high-speed wire rod mills as the research object,Multilayer composite materials(steel back/cop-Pb alloy/nickel gate layer/lead-base babbitt alloy)were tested by scanning electron microscope(SEM),energy dispersive spectrometer(EDS)and X-ray diffractometer(XRD).A three-layer molecular model(copper-lead alloy/nickel-gate layer/lead-based babbitt alloy)and a two-layer molecular model(copper-lead alloy/lead-based babbitt alloy)were constructed using molecular dynamics simulation software Materials Studio.The mechanism of improving the bonding properties of copper-lead alloy and lead-base babbitt alloy with nickel gate layer was studied.The results show that the addition of nickel gate layer prevents the diffusion of elements at the macro level,helps to maintain the good properties of the alloy both sides,and effectively improves the bonding properties between alloy layers at the micro level.
万方数据
维普
