AL2O3复合镀毕业论文讲课.doc

西安科技大学 硕 士 学 位 论 文 铝合金表面 Ni-P-β-SiC 化学复合镀层制备及应用 专业名称： 材料物理与化学 作者姓名： 郝丽丽 指导老师： 王晓刚 Subject : Preparation and Application of Electroless Ni-P-β-SiC composition coating on Aluminum alloy Specialty : Materials physics and chemistry Name :Hao Lili (Signature) Instructor :Wang Xiaogang (Signature) ABSTRACT With the rapid development of aluminum alloy application, its disadvantag- es o f low hard ness, lo w wear re s is ta nce a nd eas y to oc cur inter crys ta l co rros io n affec t its app licatio n range s. Elec tro le ss co mpos ite plating is o ne o f the ne w type me thod in the surface treatme nt o f a luminum a llo y, whic h ca n end ued good high wear re s is ta nce to s urface o f a luminum a llo y. So N i-P- β-SiC co mpos ite co atings has bee n beca me rescarc h e mp has is ,whic h aro used wide atte ntio n to by do mes it- ic and foreign scientists. In this pape r, Ni-P-β-SiC co mpo s ite coa tings was prepa red o n a luminum allo y s urface b y e lec tro le ssdepos ito n. The N i- P-β-SiC co mpo s ite co atings micros tructure was obse rved with the op tica l microscope, sca nning e lectron microscope (SEM).And p has e tra ns formatio n a nd the c he mica l co mpos itio n o f compo s ite coa tings were a na lyzed with X-ray d iffractio n (XRD) a nd e ne rgy dispers ive spe ctroscop y(EDS). The adhe s ive stre ngth o f coating was q ua ntita tiv- ely meas ured b y Type WS-2005 coating ad hes io n scra tc h tes ter. The e ffec ts o f zinc immers io n process variab le o n the ad hes ive s tre ngth a re stud ied.The hard nes s a nd dry frictio n a nd wear performa nc e o f N i-P-β- SiC co mpo s ite coating was s tud ied b y EM- 1500L mic ro vicke rs hard nes s tes