An Analysis of Metallic Glasses by Mossbauer Spectroscopy.

摘要

Several models have been used to describe the structure of iron-phosphorous-carbon amorphous alloys. In this study a twelve site substitutional solid model is used to describe the Mossbauer spectra obtained from six different metallic amorphous alloys. Spectra were obtained at room and at liquid nitrogen temperatures for the parent material, as well as for alloys containing various percentages of boron or silicon. Each spectrum is fit with a sum of Lorenzian profiles describing the twelve site model. The results indicate that the model is inadequate in fully describing the structure of the various materials. The results also indicate a difference in structure between the materials, and, in two cases, significant changes in structure with decreased temperature. (Author)