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1 2009

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Formation and structure of Co50Cr15Mo14C15B6 bulk metallic glasses

Nowosielski R., Witrak A.

Archives of Materials Science and Engineering

2009

Vol. 36, nr 1

28-33

Purpose: In the present paper thermal stability and structure of Co50Cr15Mo14C15B6 (numbers indicate at.%) glassy alloys were investigated. Design/methodology/approach: The following experimental techniques were used: scanning electron microscopy (SEM) and X-ray diffraction (XRD) phase analysis method to the test the structure. The thermal properties associated with crystallization temperature of the glassy samples were measured using differential thermal analysis and differential scanning calorimetry. Findings: The structural studies revealed an amorphous structure for the rods with thicknesses up to 3 mm, regardless of their thickness. Research limitations/implications: During thermal activation of metallic glasses two processes can be distinguished: structural relaxation and complex relaxation process of the alloy. Practical implications: The Co-rich amorphous alloys have attracted great interest for a basic research on the materials as well as for variety application. Originality/value: The obtained results confirm the utility of applied investigation methods in the thermal and structure analysis of examined amorphous alloys.