Abstract: The present invention relates to a multicomponent-alloy material layer and a method of manufacturing the multicomponent-alloy material layer and a capacitor structure of a semiconductor device comprising the multicomponent-alloy material layer. The multicomponent-alloy material layer has four to six metal elements and has specific two kinds of metal components, and the two kinds of metal components have a specific content ratio, such that without a thermal annealing treatment, the multicomponent-alloy material layer has a specific work function for an application in the capacitor structure of the semiconductor device.

Abstract: A multi-layered ceramic tube having an inner layer of high purity beta phase stoichiometric silicon carbide, a central composite layer of continuous beta phase stoichiometric silicon carbide fibers, and an outer layer of fine-grained silicon carbide. The ceramic tube is particularly suited for use as cladding for a fuel rod used in a power plant or reactor. The ceramic tube has a desirable combination of high initial crack resistance, stiffness, ultimate strength, and impact and thermal shock resistance.