پديد آورنده :
ورديان، محمد مهدي
عنوان :
مشخصه يابي و ارزيابي رفتار خوردگي پوشش هاي بين فلزي نيكل تيتانيم اعمال شده به روش هاي پاشش حرارتي HVOF و APS
مقطع تحصيلي :
كارشناسي ارشد
گرايش تحصيلي :
خوردگي و حفاظت از مواد
محل تحصيل :
اصفهان: دانشگاه صنعتي اصفهان، دانشكده مواد
صفحه شمار :
ده،86ص.:مصور،جدول،نمودار
يادداشت :
ص.ع.به فارسي و انگليسي
استاد راهنما :
مهدي صالحي،كيوان رئيسي
توصيفگر ها :
پاشش پلاسمايي اتمسفري , پاشش شعله اي- انفجاري , فولاد زنگ نزن 316L , طيف سنجي امپدانس الكتروشيميايي
تاريخ نمايه سازي :
8/3/89
استاد داور :
سعيدرضا بخشي،محمدعلي گلعذار
تاريخ ورود اطلاعات :
1396/09/29
چكيده فارسي :
به فارسي و انگليسي: قابل رويت در نسخه ديجيتالي
چكيده انگليسي :
Characterization and corrosion behavior of APS and HVOF thermally sprayed Ni Ti intermetallic coatings Mohammad Mehdi Verdian m verdianrizi@ma iut ac ir Date of Submission 2010 02 10 Department of Materials Engineering Isfahan University of Technology Isfahan 84156 83111 Iran Degree M Sc Language Farsi Supervisor Mehdi Salehi isrec@cc iut ac ir Keyvan Raeissi k raeissi@cc iut ac ir Abstract In this study NiTi intermetallic coatings were deposited on 316L stainless steel and 1045 steel using high velocity oxy fuel HVOF and air plasma spraying APS processes In this regard amorphous nanocrystalline Ni Ti powders produced by low energy mechanical alloying were used as feedstock According to characterization results the phase composition of both optimum HVOF and APS coatings consisted of NiTi Ni4Ti3 Ni and NiTiO3 On the other hand TiO phase were found only in optimum APS coating The microstructural evaluations showed that HVOF NiTi coating was less oxidized than APS one In addition no visible microcracks were detected in HVOF coating while the microcracks were evidently observed in APS one The result showed that corrosion resistance of HVOF coating on 1045 steel is better than that of APS one Here the corrosion performance of HVOF coating improved at long times while delamination of APS coating was observed It was indicated that the passive behavior and corrosion performance of the HVOF coating on 316L stainless steel were far better than those of the APS coating The study also showed that the solution had penetrated through the coating defects and caused interior corrosion of APS coating while the HVOF coating was immune from interior corrosion attack and consequently exhibited a good passive behavior during long term immersion Keywords Atmospheric plasma spraying High velocity oxy fuel spraying 316L stainless steel Ni Ti alloys Intermetallic coatings Electrochemical impedance spectroscopy
استاد راهنما :
مهدي صالحي،كيوان رئيسي
استاد داور :
سعيدرضا بخشي،محمدعلي گلعذار
