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   Influences of Bath Stirring Rate on Synetics of Nano Composite Ni-Sic-Gr Coatings on St37 Via Electrodeposition Process  
   
نویسنده رستمی محسن ,ابراهیمی کهریزسنگی رضا ,ساعتچی احمد
منبع Journal Of Advanced Materials And Processing - 2012 - دوره : 1 - شماره : 2 - صفحه:11 -19
چکیده    In this study, electrochemical deposition of ni-sic-gr nano composites was studied. the watts bath was used for electrodeposition. the sic and graphite powders were suspended in the electrolyte and stirred. the effects of changes in bath stirring rate on the composite coating were investigated. the x-ray diffraction (xrd), scanning electron microscopy (sem) and field emission scanning electron microscopy (fe-sem) methods were used to characterize the micro structure of deposited layer. the results showed that the micro-hardness at the first stage increases with increases in stirring rate value. the coating that precipitated at 500 rpm showed maximum hardness. analysis of microstructure with sem showed a homogeneous and uniform distribution of elements in the coated layer. the optimum condition for electrodeposition were as: ph=4.2, current density= 4a/dm2, stirring rate =500 rpm and 45?c.
کلیدواژه Electrodeposition ,Stirring Rate ,Micro-Hardness ,Ni-Sic-Gr ,Coating
آدرس دانشگاه آزاد اسلامی واحد نجف آباد, کارشناس ارشد-دانشگاه آزاد اسلامی واحد نجف آباد, ایران, دانشگاه آزاد اسلامی واحد نجف آباد, دانشیار-دانشگاه آزاد اسلامی واحد نجف آباد, ایران, دانشگاه صنعتی اصفهان, استاد-دانشگاه صنعتی اصفهان, ایران
 
     
   
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