پديد آورنده :
كريمي، يلدا
عنوان :
شناسايي و بررسي كامپوزيت نانو و ميكروذرات سيليسيم كاربيد با زمينه سراميكي پيوندهاي سيماني
مقطع تحصيلي :
كارشناسي ارشد
گرايش تحصيلي :
شناسايي ، انتخاب و روش ساخت مواد
محل تحصيل :
اصفهان: دانشگاه صنعتي اصفهان، دانشكده مواد
صفحه شمار :
چهارده،111ص.: مصور،جدول،نمودار
يادداشت :
ص.ع.به فارسي و انگليسي
استاد مشاور :
حسن حدادزاده
توصيفگر ها :
سيمان سورل , نمك منيزيم كلريد
تاريخ نمايه سازي :
29/1/90
استاد داور :
رحمت ا.. عمادي، كاظم كرمي
چكيده فارسي :
به فارسي و انگليسي: قابل رويت در نسخه ديجيتالي
چكيده انگليسي :
551 Recognition and making nano and micro composites of silicon carbide in ceramic matrix of cement binders Yalda Karimi y karimi@ma iut ac ir Department of Materials Engineering Isfahan University of Technology Isfahan 84156 83111 IranDegree M Sc Language FarsiSupervisor Ahmad Monshi a monshi@cc iut ac irHasan Hadadzade hadad@cc iut ac irAbstract In this work Sorel cement was produced in two stages one with classic method by using magnesiumchloride and the other one with in situ method by using hydrochloridric acid The results showed that Insitu production of cement effectively concerned to the heat reaction of magnesium oxide withhydrochloridric acid and setting time Cement with 6 moles of magnesium oxide 5 moles of water and67 97 ml of hydrochloridric acid showed the highest CCS with respect to the cement produced by classicmethods The density of cements produced by in situ method were more than the density of cementproduced by classic method Proper compositions of cement was investigated in two stages In first stage the mole amount of magnesium oxide and water were changed and mole amount of magnesium chloridewas kept constant 13 moles of magnesium oxide and 12 moles of water showed the best results ofmechanical properties and setting time In second stage mole amount of magnesium oxide and water wereconstant and mole amount of magnesium chloride changed from 0 5 to 1 9 moles Results showed that byincreasing the moles of magnesium chloride CCS porosity setting time and water dissolution increased By increasing the magnesium chloride concentration the amount of needle shaped crystals of phase 5increased 1 5 moles of magnesium chloride showed the highest CCS through the other compositions Strength changes of cement by time for cement by 13 moles of magnesium oxide 12 moles of water and1 5 moles of magnesium chloride had the highest slope and setting time between the other samples Sorelcement by 13 moles of magnesium oxide 12 moles of water and 1 5 moles of magnesium chloride wereselected for the composite matrix Effect of different particle sizes of silicon carbide from 1190 to 15 m onthe strength physical and abration properties were investigated The results showed that by decreasing theparticle size of silicon carbide the CCS increased Effect of different weight percents of 5 to 20 Wt silicon carbide was evaluated Composite reinforced by 15 wt silicon carbide had highest CCS and theresults of abration test showed that the 15 wt silicon carbide had the best abration resistance between theother samples Effect of addition of nano particles of silicon carbide on bending properties of cement wasstudied Ethanol solvent was used to increase the wettability of silicon carbide Due to dispersion stabilityof particles in ethanol and keep away from the pH in Isoelectric point in suspention hydrochloridric acidwas used Agglomeration of nano particles was decreased and the addition of 5 nano silicon carbideparticles increased the bending strength of nano composite Keywords Sorel cement Magnesium chloride salt Composite Silicon carbide particle
استاد مشاور :
حسن حدادزاده
استاد داور :
رحمت ا.. عمادي، كاظم كرمي
