The V2O5 sol was fabricated by ultra-fast quenching.The vanadium with low valence (V4+) was found in V2O5 xerogel films by XPS analysis.The technology of oxygen
The solidification features,micro-segregation,and fracture characteristics of cobalt-based alloy on the substrate of 20CrMo steel by laser cladding were studied
The characteristic of combustion wave and its change were analyzed by numerical value calculation and computer simulation,based on the combustion dynamical mode