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Structure and thermo-physical properties of selected ceramic coatings deposited on the heat resistant nickel alloy.

100%

Kobylańska-Szkaradek K. , Kusiński J. , Swadźba L.

tom R. XIX, nr 4

1073-1076

The results of an investigation of the structure, phase composition, physical and thermo-physical properties of mono- and double-layerd ZrO2-Y2O3 and ZrO2-Y2O3/NiCrAlY plasma sprayed coatings have been presented. In addition applicable properties of coatings have been determined. Presented results are the part of the large research project.

Manufacturing of Mo-Al intermetallics by SHS.

86%

Mania R.

tom R. XIX, nr 4

921-924

The self propagation high-temperature synthesis (SHS) was carried out in the equimolar powder mixture of molybdenum and aluminium. The reaction products Mo3Al8 and Mo3Al were analysed to determine chemical composition and microstructure. Density measurements using helium pycnometer permitted determination of molar fractions of molybdenum aluminides in the reaction product. Thus, the equimolar mixture of molybdenum and aluminium yielded about 23mol% Mo3Al8 and about 77mol% Mo3Al. The SHS products were densified by hot pressing (HP).

Manufacturing of intermetallic materials in Ti-Al and Fe-Al systems by SHS.

86%

Godlewska E. , Koziński S. , Mania R. , Wsołek M.

tom R. XIX, nr 4

929-932

The paper presents investigations on manufacturing titanium aluminide, TiAl, and iron aluminide, FeAl, by self-propagating high-temperature synthesis (SHS) combined with hot pressing (HP) or hot forging (HF). TiAl was prepared from equimolar powder mixture of titanium hydride and aluminium. FeAl was obtained directly from metal powders, the Fe/Al atomic ratio being 60:40. The SHS process was carried out in an Ar/H2 gas mixtures, using global ignition technique. Chemical and phase composition as well as morphology, density and porosity were analysed after each processing step. Selected samples were subjected to mechanical testing.