Investigation into Absorption Properties of Ultradispersed Powder of the Alloy with the Composition Al–1,5%Ca–1,5%La before and after Treatment with Water

Abstract

The dispersed composition and morphology of the particles of metal powders of the composition Al–1,5%Ca–1,5%La before and after interaction with water are investigated using a complex of methods including low-temperature nitrogen adsorption, scanning electron microscopy, X-ray phase analysis, etc. It is shown that the treatment of this metallic powder with water leads to the formation of slit-like and cylindrical pores in interaction products. The specific surface increases from 9 to 182 m²/g in this case. It is confirmed by the X-ray phase analysis that thermal treatment of aluminum powders right up to 200 °C leads to the formation of the particles of gel-like boehmite AlOOH on the surface. The results of investigations showed that hydrotreating allows one to vary the texture characteristics of ultradispersed powder.