نتایج جستجو برای: mgo al2o3

تعداد نتایج: 18273  

2015
Dongwei ZHAO Haibo LI Chunlin BAO Jian YANG

The production of clean steel involves the controlling, elimination, or modification of nonmetallic inclusions. In Al-killed steels, alumina is the main type of inclusion. Calcium treatment, by wire feeding, is commonly used to modify solid alumina inclusions to calcium aluminates, which exists in a fully or partially liquid phase. Liquid inclusions can improve steel castability, but make inclu...

2016
Chao Liu Yu-zhu Zhang Jie Li Jun-guo Li Yue Kang

It is necessary to elucidate the crystallization thermodynamic of mineralogical phases during the cooling process of the molten BFS with different chemical composition, because the high-melting point mineral phase maybe crystallized during the fiber forming and thereafter cooling process. Thermodynamic calculation software FactSage6.4 and the hot remelting experiments were performed to explore ...

2008
Teresa Durán Sara Serena Pilar Pena Ángel Caballero Salvador De Aza Antonio H. De Aza

The isoplethal sections CaAl2O4–MgO and CaAl4O7–MgO of the Al2O3–MgO–CaO ternary system have been experimentally established at 1 bar total pressure and air of normal humidity. The sections obtained provide new data and information that are in disagreement with thermodynamic evaluations and optimizations of the Al2O3–MgO–CaO ternary system published to date. These differences arise mainly from ...

2008
Iftikhar Ahmad Yimin Zhao Andrew Kennedy Yanqiu Zhu

Carbon nanotubes (CNTs) are probably the strongest material ever known with outstanding mechanical, electrical and physical properties [1, 2]. It is postulated that by transferring these fabulous properties as reinforcements in inorganic matrices, a new class of nanocomposite to meet the requirement of advanced applications will be generated. Al2O3 ceramics have been widely used for structural,...

2016
J. L. Du Y. Fang E. G. Fu X. Ding K. Y. Yu Y. G. Wang Y. Q. Wang J. K. Baldwin P. P. Wang Q. Bai

Nb films are deposited on single crystal Al2O3 (110) and MgO(111) substrates by e-beam evaporation technique. Structure of Nb films and orientation relationships (ORs) of Nb/Al2O3 and Nb/MgO interface are studied and compared by the combination of experiments and simulations. The experiments show that the Nb films obtain strong (110) texture, and the Nb film on Al2O3(110) substrate shows a high...

2017
T. Yokota Lei Gao R. Zhang Leighann Nicholl M. L. Yan David J. Sellmyer Sy-Hwang Liou S. H. Liou

We have studied the magnetic properties of Au (2 nm)/Co50Pt50 (3 nm)/Au (2 nm) multilayer films prepared on amorphous Al2O3/Si and (0 0 1) MgO substrates. The as-deposited films on both substrates are magnetically soft with an FCC structure and exhibit a perpendicular anisotropy. After annealing at 500 °C, the sample on the Al2O3/Si substrate has become magnetically isotropic but the sample on ...

Journal: :international journal of nanoscience and nanotechnology(ijnn 0
md abdus subhan department of chemistry, shah jalal university of science and technology, sylhet, bangladesh

the mixed metal nanocomposite mgo∙al2o3∙zno has been prepared by coprecipitation method. the product was characterized by xrd. the average particle size was found to be 34.89 nm from xrd data. sem and sem-eds were studied for evaluating surface morphology and elemental composition. the ftir spectrum of prepared mixed metal nanocomposites mgo∙al2o3∙zno and mgo∙al2o3∙zno-curcumin were studied. th...

Journal: :Materiali in Tehnologije 2021

A sulphide capacity prediction model of CaO-SiO2-MgO-Al2O3 slags has been developed based on the ion and molecule coexistence theory(IMCT). Sulphide capacity(Cs) slag for blast furnace (BF) with high Al2O3 in system at 1773K were measured by applying slag-metal equilibrium method. The feasibility IMCT is verified experiment. Effects R(w(CaO)/w(SiO2)), w(MgO)/w(Al2O3) w(Al2O3) discussed. There a...

پایان نامه :دانشگاه آزاد اسلامی - دانشگاه آزاد اسلامی واحد یزد - دانشکده شیمی 1393

در این تحقیق نانو ذرات اکسیدهای فلزی و مخلوط اکسیدهای فلزی از جمله mgo, al2o3 و کامپوزیت mgo/al2o3 تهیه و اثر آنها در پایین آوردن دمای انجماد اتیلن گلیکول بررسی شد. طیف سنجی مادون قرمز، پراش اشعه x (pxrd)، برای تعیین ساختار پودر تهیه شده مورد استفاده قرار گرفت. توزیع ذرات و مورفولوژی به وسیله میکروسکوپ الکترونی روبشی (sem) آنالیز شد. نتایج xrd نشان می دهد که mgo با ساختار مکعبی تشکیل شده است. د...

Journal: :Isij International 2021

In this paper, slag-metal equilibrium experiments have been carried out for the determination of activity MgO in CaO–SiO2–MgO–Al2O3 melts blast furnace slag at T=1873 K using Sn as metal solvent and CaF2–MgO reference slag. Based on obtained experimental results, iso-activity contour system was plotted. The effects R(w(CaO)/w(SiO2)) w(MgO)/w(Al2O3) also discussed. R structure were analyzed by F...

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