Surface segregation in an Ir-2%Pt alloy studied using Auger electron spectroscopy |
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| Affiliation: | 1. Department of Chemistry, University of the Western Cape, 7535 Cape Town, South Africa;2. Collaborative Innovation Center of Sustainable Energy Materials, Guangxi Key Laboratory of Electrochemical Energy Materials, State Key Laboratory of Processing for Non-Ferrous Metal and Featured Materials, Guangxi University, Nanning 530004, China;3. Department of Chemistry, College of Science, University of Basrah, Basrah, Iraq;4. Laboratory of Electrochemical Devices Based on Solid Oxide Proton Electrolytes, Institute of High Temperature Electrochemistry (RAS), Yekaterinburg 620990, Russia;5. Laboratory of Materials and Devices for Clean Energy, Ural Federal University, 19 Mira Str., Yekaterinburg 620002, Russia;6. Laboratory of Alternative Energy Conversion Systems, Department of Mechanical Engineering, School of Engineering, University of Thessaly, Pedion Areos, Volos 383 34, Greece;1. Clean Energy Automotive Engineering Center, Tongji University (Jiading Campus), 4800 Caoan Road, Shanghai, 201804, China;2. School of Automotive Studies, Tongji University (Jiading Campus), 4800 Caoan Road, Shanghai, 201804, China;3. Department of Electrical and Computer Engineering, Florida A&M University-Florida State University College of Engineering, FL, 32310, USA;1. Fuel Cell Institute, Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Selangor, Malaysia;2. Department of Chemical and Process Engineering, Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Selangor, Malaysia |
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| Abstract: | The surface segregation in an Ir-2%Pt alloy has been studied using Auger electron spectroscopy. The variation of the probing depth with Auger electron energy was utilized for estimating the in-depth segregation profile. After annealing at 950°C and cooling to room temperature, Auger spectra were recorded in five different kinetic energy regions. The quantitative analysis of four of these spectra was performed using computer added spectra from pure Ir and Pt. A strong segregation of Pt to the surface layer was observed. |
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