Search
نمایش تعداد 1-10 از 18
Effect of silicon and manganese on the kinetics and morphology of the intermetallic layer growth during hot-dip aluminizing
Hot dip aluminizing (HDA) of low carbon steel in aluminum bath containing various amounts of silicon and manganese was studied in this work. The effect of bath alloying elements on the morphology and growth kinetics of intermetallic layer during...
Thermal Stability of ALD Lanthanum Aluminate Thin Films on Si (100)
Influence of fuel type on microwave-enhanced fabrication of KOH/Ca 12 Al 14 O 33 nanocatalyst for biodiesel production via microwave heating
Microwave irradiation has attracted a great deal of attention when it comes to synthesis of organic and inorganic materials. In the present study, a microwave heating system was utilized to prepare KOH/Ca 12 Al 14 O 33 ...
Influence of carbon source content on the structure and performance of KOH/Ca12Al14O33eC nanocatalyst used in the transesterification reaction via microwave irradiation
KOH/Ca12Al14O33 nanocatalyst as solid base nanocatalyst was utilized in the microwave-assisted transesterification reaction that it was modified with carbon group to enhance its ability for absorption of
microwave ...
Effect of substituted IIIB transition metals on The Energy Gap of α–Al2O3 By First - Principle calculations
Abstract
Self-consistent band structure and density of state calculations were performed for the pure Alumina (corundum phase) and the aluminates α–Al2-xTxO3 where T is a transition metal and stands for Sc, Y, La and Ac with x = 0...
Study on the kinetics of the growth of intermetallic layer on the surface of CK45 steel during hot dipping process in molten aluminium
Aluminizing is one of the processes that increases the resistance to corrosion and oxidation of the steels at high temperatures. During this process, the intermetallic compounds that formed on the steel surface, causes desirable properties. Among...
Effect of Steel Substrate Microstructure on Intermetallic Layer Growth during Hot Dipping in Aluminum
In this study, aluminizing of carbon steel with different microstructures was investigated by hot dipping into molten pure aluminum. For this purpose, low carbon and medium carbon steel samples were annealed, normalized and quenched to achieve...
Optimization of the activity of KOH/calcium aluminate nanocatalyst for biodiesel production using response surface methodology
In this study, alumina and calcium aluminate were prepared through microwave combustion method (MCM) and then were modified by potassium hydroxide as solid base catalysts. The catalytic activities were evaluated in the transesterification reaction...
First-principles study of the optical properties of pure α-Al2O3 and La aluminates
Abstract
The optical properties of high k-gate α-Al2O3 and the effect of doping La have been studied by first principles using the density functional theory. The calculations were performed using the full ...