Abstract: The present invention provides an Nb—Al alloy powder for electrolytic capacitors. The powder is useful in manufacturing a component of an electrolytic capacitor which has a high capacitance and dielectric constant and which includes stable dielectric layers. The powder includes particles, which are covered with dielectric layers when the powder is processed into an anode of an electrolytic capacitor. The particles have dendritic microstructures principally containing NbAl3, Nb2Al, Nb3Al, or Nb and matrices containing Al or eutectic structures containing at least two selected from the group consisting of NbAl3, Nb2Al, Nb3Al, and Nb. The eutectic structures or the matrices surround the dendritic microstructures.

Abstract: The present invention provides a metal powder production process capable of efficiently producing a metal at high purity directly from a metal compound, and preferably enables the process to be carried out continuously. The metal powder production process according to the present invention is a process for producing a metal powder by using a metal compound for the raw material and reducing said metal compound, comprising: a molding step in which the metal compound is mixed with a binder, is molded, and is sintered to produce a metal compound feed compact; and, a reducing step in which a metal is formed by reducing the metal compound by contacting the metal compound feed compact with an active metal.

Abstract: A method for manufacturing high tensile-high toughness steel plate, which the first step 15 preparing a steel slab or ingot consisting essentially, by weight, of0.03 to 0.20% C0.01 to 0.70% Si0.50 to 1.80% Mnlesser concentrations of titanium, zirconium, and mobium, and balac iron.The second step is rolling the slab or ingot with an accumulated rolling reduction of at least 30% in a temperature range between (Ar.sub.3 +150.degree. C.) and Ar.sub.3 in a cooling after casting, or in another cooling after reheating a cold steel slab in a temperature range between 1000.degree. C. and 1300.degree. C.The third step is quenching the rolled steel from a temperature not less than (Ar.sub.3 -30.degree. C.) within a period of time in which neither recovering nor recrystallization substantially occur.The fourth step is tempering at a temperature of not higher than Ac.sub.1.

Abstract: A process for producing high-tension bainitic steel having high-toughness and excellent weldability by subjecting a bainitic steel of a specific composition to a low-temperature heating and subsequently rolling the steel under specific conditions.