Solubility limit for sulphur in nickel between 637° and 1400° C

摘要: Abstract The activity of sulphur in α -solid nickel and the solubility limit solid with respect to liquid sulphide has been determined range 850° 1400°C by equilibration dilute alloys H2S/H2 mixtures. Estimates down eutectic at 637°C have obtained extrapolation from mechanical tests. is retrograde. At maximum near 1250°C it takes value 430 ± 50 wt ppm temperature inferred be 20 12 ppm. standard free energy change for reactionH2S ⇌ H2 +S (in Ni)based on a state 1 atomic per cent is∆Fo= 6070 − 10.13T Resume Les auteurs ont determine la solubilite du soufre dans Ie et les limites de solide en equilibre avec sulfite liquide un domaine tamperature 850 amenant alliages melange S/H2...