Electrochemical and Corrosion Behavior of Metallic Glasses

Abstract

ReferencesCHAPTER 2 Metallic Glasses and Rapid Solidification 2.1. Metallic Glass Synthesis 2.2. Processing and Microstructure Characterization 2.3. Applications of Metallic Glasses 2.4. Corrosion Mechanisms in Metallic Glasses References CHAPTER 3 Zirconium (Zr)-based Bulk Metallic Glasses and Their Composites 3.1. Zr-based Bulk Metallic Glasses 3.2. Corrosion Behavior of Zr-Based Metallic Glasses 3.3. Effect of Alloying Elements 3.3.1. Effect of Copper (Cu) Addition 3.3.2. Effects of Niobium (Nb) and Cobalt (Co) Addition 3.3.3. Effect of Silver (Ag) Addition 3.3.4. Effect of Rare-Earth (RE) Elements Addition 3.4. Combined Effects of Mechanical Loading and Corrosion 3.5. Effects of Structure and Crystallinity 3.6. Zr-Based Bulk Metallic Glasses Composites 3.7. Effect of Test Environment References CHAPTER 4 High-Density Metallic Glasses 4.1. Iron (Fe)-based Metallic Glasses 4.1.1. Effect of Alloying Elements 4.1.1.1. Effect of Chromium (Cr) Addition 4.1.1.2. Effect of Molybdenum (Mo) Addition 4.1.1.3. Effect of Other Metals 4.1.1.4. Effect of Metalloid Addition 4.1.2. Effects of Structure and Crystallinity 4.1.3. Effect of Test Environment Ni-Based Metallic Glasses4.2.1. Effect of Alloying Elements 4.2.2. Effects of Structure and Crystallinity 4.2.3. Effects of Test Environment 4.3. Cobalt (Co)-Based Metallic Glasses 4.4. Copper (Cu)-Based Metallic Glasses 4.4.1. Effect of Alloying Elements 4.4.2. Effect of Test Environment4.5. Chromium (Cr)-Based Metallic Glasses References CHAPTER 5 Low-Density Metallic Glasses 5.1. Titanium (Ti)-Based Metallic Glasses and Composites 5.1.1. Effect of Alloying Elements 5.1.2. Effects of Structure and Crystallinity 5.2. Ti-Based Bulk Metallic Glass Composites 5.3. Magnesium (Mg)-Based Metallic Glasses 5.3.1. Effect of Alloying Elements 5.3.2. Effects of Structure and Crystallinity 5.3.3. Mg-Based Metallic Glass Composites 5.4. Calcium (Ca)-Based Bulk Metallic Glasses 5.5. Aluminum (Al)-Based Bulk Metallic Glasses References CHAPTER 6 Noble Metal-and Rare-Earth-Based Metallic Glasses 6.1. Noble Metal-Based BMGs 6.2. Rare-Earth Elements-Based BMGs References CHAPTER 7 Concluding Remarks ix About the Authors Vahid Hasannaeimi obtained his Ph.D. in Materials Science and Engineering from the University of North Texas (2019), where he studied electrochemical and catalytic behavior of metallic glasses. He is currently a Postdoctoral Research Associate in the Department of Materials Science and Engineering at UNT. He received his M.S. from Tarbiat Modares University (2011) in Materials Science and Engineering, where he worked on the development of corrosion-resistant nanocomposite coatings. His research interests include surface degradation mechanisms in materials, functional and structural coatings, and in situ corrosion mechanisms in multiphase alloys.

Acid Treatments of Ti-Based Metallic Glasses for Improving Corrosion Resistance in Implant Applications

“…While the free corrosion activity expressed in the i corr value was similarly low as for cp-Ti, an early pitting event began upon anodic polarization at a potential of around −100 mV vs. SCE. The presence of Cu in the nearsurface regions of the alloy reduced the continuity of the Ti-and Zr-oxide passive film (or increased its defectiveness), which provoked the development of pitting corrosion [34,35]. This is similar to Zr-Cu-based bulk glass-forming alloys, for which the clear dependence of the pitting potential on the Cu content of the alloy was demonstrated and attributed to a Cu enrichment underneath the growing Zr-oxide passive films [21,32].…”