Structure and properties of ZrO2 and Al2O3 powders produced using plasma chemical technique were studied in the framework of this research. Obtained Al2O3 powder was used for reinforcement of Al alloy. Improvement of mechanical properties of Al alloy associated with introduction of alumina particles into the melt was demonstrated.

Plasma-chemical method for producing metal oxide powders and their application

The paper presents data on the structure, phase composition and other properties of zirconia and alumina powders obtained by electric explosion of wire and plasma-chemical deposition methods. Scanning and transmission electron microscopy reveal that the nanoscale powders are composed of spherical particles and aggregates formed by these particles. X-ray diffraction is used to identify the parameters of the crystal structure of these powders. Specific surface area is determined for all powders by BET method. Powders are used to improve the mechanical properties of aluminum alloys. For the optimization of introduction reinforcement nanoparticles used ultrasonic treatment of the melt.

The Use of Alumina and Zirconia Nanopowders for Optimization of the Al‐Based Light Alloys

In this work we report the results of experimental studies of the phase composition and structure of the nanodispersed Al–O powder produced by the plasmodynamic method. Using X-ray diffractometry and transmission electron microscopy, we show that the product contains σ-Al2O3 and MgAl2O4. The phase composition evolution of the initial product of plasmodynamic synthesis is studied during its heat treatment. Thermogravimetric analysis in an argon atmosphere shows no changes in mass of the sample weighed when it is heated, while differential scanning calorimetry studies indicate a marked manifestation of the endothermic effect.

Study of the Phase Composition and Structure of the Nanodispersed Al–O Powder Produced by a Plasmodynamic Method

Indoor PM2.5, home environmental factors and lifestyles are related to sick building syndrome among residents in Nanjing, China

Using modern methods of analysis, investigations of the phase composition, structure, and properties of powders of aluminum oxide synthesized by the plasmochemical method are carried out. The possibility of plasmochemical technology of treatment of dispersed raw materials for obtaining submicrometer and nanodimensional particles of aluminum oxide is shown.

Structure and properties of plasmochemical powders of aluminum oxide

Corrigendum to <’Linking indoor particulate matter and black carbon with sick building syndrome symptoms in a public office building’> <[Atmospheric Pollution Research 13 (2022) 101292]>

N. I. Sitnikov

Papers

Structure and properties of plasmochemical powders of aluminum oxide

Corrigendum to <’Linking indoor particulate matter and black carbon with sick building syndrome symptoms in a public office building’> <[Atmospheric Pollution Research 13 (2022) 101292]>