The role of titanium content in (Ni75Cr15Si10)100−x Ti x bulk metallic glass systems to elevate mechanical and corrosion properties

Abstract

ABSTRACT Bulk metallic glass (BMG) samples are amalgamated by high-energy ball milling using the general formula (Ni75Cr15Si10)100−x Ti x (labelled as NCST x , where x\u2009=\u20090,4, 8 and 12\u2005at.%). The crystallinity and phase attribution properties of nickel (Ni), chromium (Cr), silicon (Si) and titanium (Ti) are scrutinized using the XRD analysis. The trend related to glass-forming ability (ΔT) and the GFA parameter (γ) is NCST8\u2009>\u2009NCST12\u2009>\u2009NCST4\u2009>\u2009NCST0, which confirms that NCST8 sample shows superior glass-forming ability. The reduced glass transition temperature (T rg) for all the present BMG systems is greater than 0.5, which offers its good thermal stability and glass-forming ability (GFA). Corrosion studies suggested that a sample, having dynamic nature towards corrosion resistance and potential (E c) (NCST8, (Ni75Cr15Si10)92Ti8), exhibits relatively lower values of both i c (4.7\u2009×\u200910−4\u2005A/cm2) and i p (0.0079\u2005A/cm2), as recommended in potentio-dynamic findings.