The corrosion and passivity of sputtered Mg–Ti alloys
- Song, Guang-Ling [ Center for Marine Materials Corrosion and Protection, College of Materials, Xiamen University, China ]
- Unocic, Kinga A. [ Oak Ridge National Laboratory, Oak Ridge, TN ]
- Meyer, Harry III [ Oak Ridge National Laboratory, Oak Ridge, TN ]
- Cakmak, Ercan [ Oak Ridge National Laboratory, Oak Ridge, TN ]
- Brady, Michael P. [ Oak Ridge National Laboratory, Oak Ridge, TN ]
- Gannon, Paul E. [ Montana State University: Chemical & Biological Engineering ]
- Himmer, Phil [ Montana State University: Electrical & Computer Engineering ]
- Andrews, Quinn [ Montana State University: Chemical & Biological Engineering ]
This study explored the possibility of forming a “stainless†Mg–Ti alloy. The electrochemical behavior of magnetron-sputtered Mg–Ti alloys was measured in a NaCl solution, and the surface films on the alloys were examined by XPS, SEM and TEM. Increased corrosion resistance was observed with increased Ti content in the sputtered Mg–Ti alloys, but passive-like behavior was not reached until the Ti level (atomic %) was higher than the Mg level. The surface film that formed on sputtered Mg–Ti based alloys in NaCl solution was thick, discontinuous and non-protective, whereas a thin, continuous and protective Mg and Ti oxide film was formed on a sputtered Ti–Mg based alloy.