Author's Name:	E. Jonda, K. Labisz & L. Siomin
Subject Area:	Science and Engineering
Subject	Engineering
Section	Research Paper

Zinc alloys, microstructure, microhardness, recycling, alloying additives.

This paper presents especially the results of microstructure and mechanical properties investigation results of selected zinc (Zn) and zinc alloys (ZnAl15). In the frame work of this paper were performed investigations of the microstructure using light and scanning electron microscopy as well as analysis of the chemical composition of the tested materials, there are also carried out. The investigations were performed on samples of pure Zn as well as of zinc-aluminium alloy ZnAl115 with the chemical composition conforming with the commercial standard concerning especially the yield strength obtained after chemical composition modification and the measurement of the impurities amount as well as the hardness and microhardness of the tested commercially available and modified Zn alloys. The presented tests results carried out using light microscopy allowed the determination of the microstructures obtained after the production process of materials from pure zinc and selected zinc alloys.