نتایج جستجو برای: cr2o3 refractory

تعداد نتایج: 58607  

Journal: :International Materials Reviews 2023

The performance of the refractory lining in glass melters used for nuclear waste vitrification is critical to melter reliability long-term continuous operation. Monofrax® K-3, a high Cr2O3 fused cast material, has been widely build liners United States. Corrosion behaviour K-3 evaluated based on crucible-scale testing, inspection components following scaled and inspections Defense Waste Process...

Journal: :Coatings 2023

In this study, Cr2O3, Cr2O3-SiO2-TiO2 and Cr2O3-SiO2-TiO2-graphite coatings were formed by atmospheric plasma spraying. The influence of SiO2-TiO2 SiO2-TiO2-graphite reinforcements on the surface morphology, elemental composition, structure tribological properties chromia was determined. friction coefficients specific wear rates investigated a ball-on-flat configuration using 1 N 3 loads under ...

2006
Gwen D. Goodman-Lowe Shannon Atkinson James R. Carpenter G. D. Goodman-Lowe S. Atkinson J. R. Carpenter

In an effort to gain a better understanding of the digestive physiology of the Hawaiian monk seal, Monachus schauinslandi, we measured the initial defecation time and rate of digesta passage using chromic oxide (Cr2O3) and frozen corn kernels as markers. IDT ranged from 9.5 to 19 h (mean 14 + 4.8 h), which was a longer period of time than that reported for any other pinniped. Rate of digesta pa...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس - دانشکده فنی 1392

در این پژوهش شیشه سرامیک شفاف اکسی فلورایدی sio2-cao-caf2-na2o به روش ذوب و ریخته گری تهیه شد و خواص نشری آن در حضور یون های آلاینده مورد بررسی قرار گرفت. به منظور دست یابی به ریزساختار یکنواخت و حاوی نانوبلور، شیشه ها در دو مرحله جوانه زنی و رشد عملیات حرارتی شدند و اثر دمای تبلور بر اندازه و درصد فاز بلوری و میزان شفافیت مورد بررسی قرار گرفت. هم چنین به منظور ایجاد خاصیت نورتابی در شیشه مذک...

ژورنال: نانو مواد 2016
امیر حسین اسراری بهروز شایق بروجنی

نانواکسیدهای عناصر واسطه جایگاه ویژه‫ای را در ساخت الکترود آند باتری‌های یون لیتیمی دارند. در این تحقیق میکروکره‫های Cr2O3/C با استفاده از روش سولوترمال به صورت یک مرحله‫ای برای اولین بار تولید شد. آنالیز پراش پرتو ایکس (XRD) و میکروسکوپ الکترونی روبشی SEM)) جهت آنالیز محصولات استفاده شد. تعیین مقدار کربن در نمونه‌های سنتز شده با استفاده از آنالیز حرارتی (TGA) انجام شد. نتایج به دست آمده نشان م...

Journal: :The British journal of nutrition 1996
P van Leeuwen A Veldman S Boisen K Deuring G J Van Kempen G B Derksen M W Verstegen G Schaafsma

Two experiments were conducted to determine apparent ileal DM and crude-protein (CP) digestibilities in rations fed to pigs. An evaluation was made of Cr2O3 and HCl-insoluble ash as digestive markers. In addition, the effects of body weight (BW) on apparent ileal DM and CP (N x 6.25) digestibilities were studied. In Expt 1, thirteen barrows averaging 35 kg BW were fitted with post-valve T-caecu...

Journal: :Chinese Journal of Catalysis 2021

Investigation of the charge dynamics and roles cocatalysts is crucial for understanding reaction photocatalytic water splitting on semiconductor photocatalysts. In this work, photogenerated electrons in Ga2O3 loaded with Cr2O3-Rh was studied using time-resolved mid-infrared spectroscopy. The structure these identified high-resolution transmission electron microscopy CO adsorption Fourier-transf...

Journal: :Journal of animal science 2015
B J Kerr T E Weber C J Ziemer

Use of indigestible markers such as Cr2O3, Fe2O3, and TiO2 are commonly used in animal studies to evaluate digesta rate of passage and nutrient digestibility. Yet, the potential impact of indigestible markers on fecal microbial ecology and subsequent VFA generation is not known. Two experiments utilizing a total of 72 individually fed finishing pigs were conducted to describe the impact of diet...

2002
e. goering m. justen j. geissler u. rüdiger m. rabe g. güntherodt

Highly a-axis-textured CrO2 films have been deposited on Al2O3 (0001) substrates by chemical vapor deposition. CrO2 has been found to have highly a-axis (010)-oriented columnar growth on a Cr2O3 (0001) initial layer. The sixfold surface symmetry of the Cr2O3 initial layer leads to three equivalent in-plane orientations of the a-axis-oriented CrO2 unit cell. We report Cr L2,3 X-ray magnetic circ...

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