The production of pieces or powders in a compound of silicon or of a metal, by reaction of pieces or silicon powders or of a metal in the solid state to a gas

摘要

The production of pieces or powders in a compound of silicon or of a metal by the exothermic reaction of the pieces or silicon powders or of a metal in the solid state to a gas, in which it stores the flow differential or the pressure variation of the gas 19 in contact with the workpiece or the powder, and the reaction is carried out at temperatures, increasing as a function of the flow differential or of the pressure of the gas 19. / p & & p & will determine the maximum differential prior a flow of gas 19 as a function of the chemical nature of the pieces or powders, and possibly the density and the dimensions of the pieces, and suspended the rise in temperature when the flow differential or the speed of the fall of pressure of the gas reactifatteignent the maximum value determined, to the - above which the reaction become excessive and would not make it possible to obtain a complete conversion of the pieces or powders. / p & & p & a nitriding of pieces or silicon powders.