نتایج جستجو برای: refractory metal
تعداد نتایج: 254511 فیلتر نتایج به سال:
Future improvements to jet engine performance will require materials which are lower in density and can withstand higher temperatures; thus increasing the thrust-to-weight ratio and the engine efficiency. The intermetallic compound IB-NiA1 is a prime candidate for this new high temperature material. This intermetallic offers a low density, a high melting temperatme, and excellent oxidation resi...
Nanomaterials are widely used in modern technologies due to their unique properties. Developing methods for production is one of the most important scientific problems. In this review, advantages electrochemical synthesis molten salts nanostructured coatings and nanomaterials different applications were discussed. It was determined that Mo2C on a molybdenum substrate obtained by galvanostatic e...
Introduction: Alloys of refractory metals are expected as first condensates from a cooling nebular gas [1]. Complex particles (tenths of μm) containing the most refractory metals Re, Os, W, Ir, Mo, Ru, Pt and Rh in approximately solar abundances were first reported by [1,2]. These opaque assemblages (OA) were found to be affected by exsolution, oxidation and sulfurization, leading to the redist...
The problem of the malleability rhenium at room temperature is discussed. It has shown that manufactured by mean electron beam melting able to mechanical treatment rolling temperature. primary condition for minor share tensile stress in processing scheme. suppresses grain boundary sliding a coarse-grained workpiece this refractory HCP-metal.
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