Sökning: "carburization"
Visar resultat 1 - 5 av 16 avhandlingar innehållade ordet carburization.
1. Mechanisms of Metal Dusting
Sammanfattning : The primary intention with this Doctoral thesis is to fillin the knowledge gaps and raise the level of understandingregarding the different metal dusting mechanisms in general andexplain the process in detail for high alloyed materials.Considerable effort is put into identifying the driving forcesand elucidating the diffusional processes in metal dusting. LÄS MER
2. Mechanisms of metal dusting on stainless steels
Sammanfattning : .... LÄS MER
3. Thermochemical processing of nanostructured W-Co and WC-Co powders
Sammanfattning : .... LÄS MER
4. Investigations of the Kinetics of Reduction and Reduction/Carburization of NiO-WO3 Precursors
Sammanfattning : Kinetic studies of reduction of the mixtures of NiO and WO3 having different Ni/(Ni+W) molar ratios in flowing hydrogen gas were investigated by means of Thermo Gravimetric Analysis (TGA), Fluidized Bed (FB) technique as well as Thermal diffusivity measurements under isothermal conditions. In the case of TGA, the reaction progress was monitored by mass loss, while evolved gas analysis by a gas chromatograph was the indicator of the reaction progress in the case of FB. LÄS MER
5. Modelling of reactive gas transport
Sammanfattning : A rather general microscopic model for reactive gastransport in porous media is developed and applied to twodifferent processes in powder metal technology: carburization,and reduction of surface oxides.The carburization model is developed from the kinetic modelproposed by Grabke and applied to a 2-D porous geometryobtained from images. LÄS MER