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Metallic glasses are metastable amorphous structures produced by quenching-rapid cooling. Due to very high cooling rates during the production process it is very difficult to produce homogenous samples with the same chemical composition. We present the results of examination of homogeneity and structure of CuZrAlY metallic glass ribbons. The ribbons, approximately 1.5 m long and 1 mm wide were produced using melt spinning technique. The investigated samples, 1 cm long and 1 mm wide were chosen from the middle and the end of produced ribbons. The surface of the samples was examined by metallographic and electron scanning microscopy. Chemical composition in different areas of each sample was checked by energy-dispersive X-ray spectroscopy. The differences in structure of the samples were investigated using X-ray diffraction. Electrical resistivity measurement in temperature range from 80 to 300 K are presented also.

This paper presents the results of an extensive research of two partially crystalline samples Ni23Zr73 (indicated numbers refer to atomic percentages) metallic glasses produced by chill block melt-spinning (CBMS) under different conditions. Keeping all other CBMS parameters constant we have varied only pressure which ejects a stream of liquid onto the wheel. Partially crystalline structure of the samples was confirmed by X-ray characterization (XRD). The samples were also investigated by scanning electron microscopy and energy-dispersive X-ray spectroscopy (EDX). The results showed the very homogenous distribution of nickel and zirconium in the samples and chemical composition near Ni23Zr77. Crystallization and thermal stability were studied by meaning of differential scanning calorimetry (DSC). DSC analysis indicates a simple thermally activated process for both samples. Microhardness was also measured on both sides the samples.