STRUCTURAL PHASE STATES OF Cu-Zn-Al ALLOY POWDERS PRODUCED BY HF–PLASMA-CHEMICAL DENITRATION

Yu.F. Ivanov, A.A. Klopotov, N.V. Dedov, N.A. Popova

DOI: 10.26456/pcascnn/2015.7.232

Original article

Abstract: The paper presents a study of Cu–Zn–Al alloy that is proved to be a multiphase material. In the equilibrium state, α–phase (fcc crystal lattice) and β – phase (simple centered cubic lattice) can be formed in this alloy based on copper. It is shown that γ – phase can be formed due to the threecomponent alloy composition, and the different chemical composition of the Cu – based solid solution (Zn or Al alloys), the different concentrations of its second element result in the formation of a certain amount of α – and β – phases within the one type of the crystal lattice that differ in its parameter. The possibility of the alloy powder synthesis is shown using the plasma-chemical techniques that allows the formation of X-ray amorphous and nanocrystal structure. A variety of binary phases characterized by Zn and Al concentration in the Cu – based solid solution is described in this paper. The experimental results show that plasma-chemical synthesis of metal alloy powders is accompanied by decomposition of chemical elements. Powders of the triple composition were not observed.

Keywords:

• Yu.F. Ivanov
• A.A. Klopotov
• N.V. Dedov
• N.A. Popova

Reference:

Ivanov Yu.F., Klopotov A.A., Dedov N.V., Popova N.A. Strukturno-fazovye sostoyaniya poroshkov splava Cu-Zn-Al , poluchennykh metodom VCh – plazmokhimicheskoj denitratsii [STRUCTURAL PHASE STATES OF Cu-Zn-Al ALLOY POWDERS PRODUCED BY HF–PLASMA-CHEMICAL DENITRATION], Fiziko-khimicheskie aspekty izucheniya klasterov, nanostruktur i nanomaterialov [Physical and chemical aspects of the study of clusters, nanostructures and nanomaterials], 2015, issue 7, pp. 232-241. DOI: 10.26456/pcascnn/2015.7.232. ⎘

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