My name is Gadang Priyotomo from Indonesia, i will carry out research for high temperature corrosion especially metal dusting failure. Producing chemical derivatives of the refining process often involves the creation of a synthesized gas (syngas) stream consisting of a mixture of CO, H2 and H2O with lower levels of CO2 and some CH4. The synthesis and reducing gases derived by reforming processes are used as the basic feedstock in the production of plastics, synthetics, fertilizers, fibers and pharmaceuticals. When such gas mixtures are present in the process stream in the critical temperature range of about 400° to 800°C, the phenomenon labeled “metal dusting” can potentially be a severe corrosion problem. Past and present failures resulting from metal dusting have prompted end users and material producers alike to examine the causes of and potential solutions to this often-disastrous problem. Metal dusting can be described as a catastrophic carburization phenomenon which occurs under conditions where the carbon activity of the gaseous atmosphere is greater than one. Metal dusting is manifested by the disintegration of the affected metal into a powdery mixture of graphite and metal particles. Oxides and carbides are also often present in the powdery mixture or 'dust'. in the global market, many material for resisting metal dusting process. mainly type of alloy base Fe-Ni-Cr. Is it possible to add Cu element (1 - 5%wt) can increase resistance of metal from its failure?

Hi. Addition of Copper is generally considered to be detrimental to achieve high temperature properties in Ni-Cr alloys. Kochappan.

I don’t think Cu element would increase metal dusting or carburisation resistence. It is not usual to use Cu above traces % in high temperature services. Maybe colorizing which is the process for the aluminising of steel surfaces by Al diffusion treatment will be the option. Colorized steel has excellent corrosion resistivity in H2S atmospheres under high temperature conditions and is also resistant to high temperature oxidation and carburisation due to Co gas and hydrocarbons. Luis Marques