Abstract: A process for manufacturing amorphous alloy powders is provided, wherein, a high-speed fluid jet is blown against a flowing melt of an alloy which can be formed into amorphous powders, thereby powerizing the melt and rapidly cooling and solidifying the melt. Use is made of an action tube in which pressure is reduced and turbulent flow is caused so as to increase the cooling rate of the powderized alloy and to form particles of irregular shape. Further, the powderized alloy particles are forced to forcibly collide against a block to increase the cooling rate of the alloy and to form particles of irregular shape.

Abstract: A semiconductor circuit comprising a reactor including a closed magnetic path core of a compression molding which is formed of a mixture of an insulating material and particles of magnetic substance and a conductor magnetically interlinking to the core, and a semiconductor element connected in series with the reactor.

Abstract: A continuously cast slab for steel sheets having excellent workabilities which comprises not more than 0.02% of carbon, not more than 0.6% of manganese, not more than 0.005% of sol. aluminum, not more than 0.005% of titanium with a reduced silicon content of less than 0.02% and a reduced content of silica inclusions and the balance being iron and unavoidable impurities and a method for producing the steel slab.