Abstract
The beta gamma alloys of Ti - 43.8Al - 4Nb - 2Cr - 0.2B - 0.2C at % (9CN) were prepared using induction skull melted (ISM) cast ingots. In order to make a fine fully lamellar structure with some minor phases, two step cooling was performed using two furnaces after..... More

Abstract
This study investigated the microstructure and mechanical properties of 17-4PH precipitation hardened martensite stainless steel and Fe-Cr-B based alloy mixed material manufactured using powder injection molding. 17-4PH stainless steel powder was mixed with 5 wt%, 10 wt% and 20 wt% Fe-Cr-B based alloy (M alloy) powder to manufacture three different..... More

Abstract
When 2.25Cr-1Mo steel was hot-dip aluminized, a coating consisting of (Al-rich topcoat)/(Al₁₃Fe₄ layer)/(Al₅Fe₂ layer) formed. With increment of oxidation temperature, the transform of Al→Al₁₃Fe₄→Al₅Fe₂→AlFe→AlFe₃→α-Fe(Al)→α-Fe occurred through interdiffusion between the coating and the substrate as follows. The oxidation at 700 ^oC changed the coating to (α-Al₂O₃ scale)/(α-Al₂O₃, Al₁₃Fe₄, Al₅Fe₂)-mixed layer)/(Al₅Fe₂ layer)/(AlFe..... More

Abstract
This study attempted to utilizing the kinetic spray process to manufacture tantalum coating layer and investigated the effect of carrier gas on the microstructure and macroscopic properties of the coating layer. The initial powder feed stock was a massive powder with an average particle size of 24.35 μm and 99.99%..... More

Abstract
This study examined the effects of the Sn content in a pure active metal filler Ag-Cu-Ti for the brazing of a Cu/ Al₂O₃ joint. The optimal content of Sn to effectively wet alumina was 5 wt%. The microstructure of the brazed joint showed the presence of an Ag-rich matrix and..... More

Abstract
Microstructure evolution and the creep fracture characteristics of dissimilar welds between Ni-based superalloy Inconel 740H and High Cr ferritic steel Gr.92 were investigated. The dissimilar welds were fabricated by shielded metal arc (SMA) welding process with Ni-based austenitic Inconel 182 superalloy. Postweld heat treatment at 760 ^oC for 4 hours..... More

Abstract
The methane reduction (MR) of SnO₂ has been proposed as a highly efficient method for recovering Sn from SnO₂ containing industrial wastes. The MR of SnO₂ also produces a mixture of H₂ and CO, which can be further utilized as a syngas for the production of various fuels through the..... More

Abstract
The addition of CMC (Carboxymethylcellulose, Sodium Salt) may improve the hydriding and dehydriding properties of Mg since it has a relatively low melting point and the melting of CMC during transformation-involving milling may put the milled samples in good states to absorb and release hydrogen rapidly. Samples with compositions of..... More

Abstract
Aluminum-induced crystallization(AIC) is one of the ways to improve characteristics of thin-film poly-crystalline (TFPC) silicon solar cell since it shows large grain size and good properties for TFPC silicon solar cell. In AIC process, aluminum is firstly deposited on foreign substrate. Then, silicon is deposited on aluminum. Annealing was done..... More

Abstract
Industrially meaningful hydrogen production process from mixture or syngas certainly must have a cooling process, which is typically pressure swing adsorption (PSA). However, the PSA process involves an exothermic reaction during adsorption. Recently, hydrogen separation research has been in progress in order to develop a cooling process to minimize or..... More