Oxidation behavior of the TiNi shape memory alloy with a laser surface melted layer

The isothermal oxidation behavior of TiNi specimens with or without laser surface melted (LSM) layers in pure oxygen over the temperature range of 600—800◦C was studied. Characterization of the specimens after oxidation was conducted using X-ray diffraction (XRD), scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS). The oxidation resistance of the LSM specimens has been improved significantly. The formation of a compact oxide layer on the LSM specimens contributes to good oxidation resistance. C 2006 Springer Science + Business Media, Inc.