Simultaneous chromizing ? Aluminizing coating of low-alloy steels by a halide-activated, pack-cementation process

Chromizing-aluminizing and Chromizing-siliconizing Coating of a Ferritic Steel

Fundamental aspects of high-temperature corrosion

Some recent considerations in three widely different aspects of high-temperature corrosion are summarized: 1) reactions at the metavscale interface in support of scale growth; 2) mass transfer effects in the control of evaporation of volatile reaction products; and 3) the codeposition of multiple elements for diffusion coatings using halide-activated cementation packs. The climb of misfit edge ...

Neural Network Modeling of Oxidation Kinetics in Air of Steel- T21 Alloy Coated by Simultaneous Germanium-Doped Aluminizing-Siliconzing Process

In this work a pack cementation of germanium-doped aluminum and silicon coatings on low alloy steel type-T21 has been applied. This gives significant improvement in the oxidation. Steel-T21 was coated with germanium-doped aluminizing-siliconizing. Diffusion coating was carried out at 1050C for 6 h under an Ar atmosphere by simultaneous germanium-doped aluminizing-siliconzing process. Cyclic oxi...

thermodynamic investigation of pack aluminizing process of pure titanium

in this research, aluminizing packs containing naf and nh4cl activators were used for aluminizing of pure titanium samples at 1100 ºc. the results showed that the layers of tial3, tial2, γ-tial, α2-ti3al, and α-solid solution are formed on titanium samples in both cases. however, the weight gain and the thickness of tial3 layer in treated samples with nh4cl activator are greater than those when...

Modelling Simultaneous Alloy Carbide Sequence in Power Plant Steels