Coating and Thin Film Materials for Energy, Aerospace, Environment and Biological Applications: Poster Session
Sponsored by: TMS Surface Engineering Committee, TMS Thin Films and Interfaces Committee
Program Organizers: Jing Zhang, Indiana University – Purdue University Indianapolis; Yeon-Gil Jung, Korea Institute of Ceramic Engineering & Technology; Albert Feuerstein, Praxair Surface Technologies, Inc. (retired); Raymond Sinatra, Rolls-Royce Corporation (retired); Li Li, Rolls-Royce Corporation
Tuesday 10:00 AM
November 3, 2020
Room: Poster Hall
Location: MS&T Virtual
Session Chair: Jing Zhang, Indiana University – Purdue University Indianapolis
Germanium Monochalcogenide Nanosheets as Anode in Metal-ion Batteries: Shakir Bin Mujib1; Maren Ellis1; Sophie Justus1; Porter Herold1; Gurpreet Singh1; 1Kansas State University
We present two-dimensional (2D) sheets of germanium sulfide (GeS) and germanium telluride (GeTe) as promising high-capacity and stable materials for energy storage. GeS and GeTe with layered structures are prepared via a simple liquid-phase exfoliation approach. As-synthesized 2D nanosheets can effectively increase the electrolyte-electrode interface area and facilitate metal ion transport. As a result, GeS and GeTe nanosheets deliver a high areal capacity of 1.76 mAh cm-2 and 1.05 mAh cm-2, respectively as anodes in lithium-ion batteries (LIBs). Further analysis of GeS and GeTe in sodium-ion batteries (SIBs) and potassium-ion batteries (KIBs) suggest that layered germanium monochalcogenides can be potential anodes in other metal-ion batteries.
Infiltration Behavior of Calcium Magnesium Alumina-Silicate (CMAS) in Thermal Barrier Materials of YSZ, LZ, and LZ–YSZ Composite: Guanlin Lyu1; Dowon Song2; Junseong Kim1; Janghyeok Pyeon1; SeungCheol Yang1; Yeon-Gil Jung1; 1Changwon National University; 2Hanyang University
Calcium magnesium alumina-silicate (CMAS) attack on TBCs is one of the reasons for the early delamination of TBCs. In this study, we evaluated the effects of CMAS on the microstructure evolution in yttria-stabilized zirconia (YSZ), lanthanum zirconate (LZ), and composite coating with a 50:50 volume ratio of YSZ and LZ (LZ–YSZ). YSZ was easily to be deteriorated by CMAS due to the de-stabilization of t’-YSZ. LZ showed the mitigated penetration of CMAS by reaction products, originated from high reactivity between LZ and molten CMAS. The LZ–YSZ composite showed a denser microstructure in the surface, resulting in retarding the penetration of CMAS. Therefore, the TBC with the LZ–YSZ composite will prolong the lifetime performance and protect the further corrosive degradation of TBCs in high-temperature environments. The infiltration behavior and the reaction mechanism of molten CMAS for the YSZ, LZ, and LZ–YSZ composite were discussed after CMAS attack for different periods.
Numerical Simulation of Temperature Swing Effect in Silica Reinforced Porous Anodized Aluminum Coatings: Abhilash Gulhane1; Jian Zhang1; Zhe Lu2; Bong-Gu Kim3; Yeon-Gil Jung3; Jing Zhang1; 1Indiana University – Purdue University Indianapolis, Indiana; 2University of Science and Technology Liaoning; 3Changwon National University
We present a finite element model to simulate the temperature swing effect of Silica Reinforced Porous Anodized Aluminum (SiRPA) coatings. Using a realistic 3D SiRPA coating microstructure derived from coating fabrication processing parameters, the coating thermophysical properties are first computed. A transient thermal analysis is conducted to model the temperature swing effect of the coating by comparing the temperature fluctuation of SiRPA coating with conventional Yttria Stabilized Zirconia (YSZ) based TBCs. The modeling data illustrate that SiRPA coating shows a higher fluctuation compared to YSZ based TBCs, suggesting its applicability in internal combustion engines.
Synthesis of Magnesium Oxide based Insulation Coating Powder by Co-precipitation: Bong-Gu Kim1; Hyun-Hee Choi2; Jung-Hun Son2; SeungCheol Yang2; Yun-ki Byeun3; Min Serk Kwon3; Asimiyu Tiamiyu1; Jing Zhang1; Yeon-Gill Jung2; 1Indiana University-Purdue University Indianapolis; 2Changwon National University; 3POSCO
Magnesia is currently employed as a coating material for forming insulation layers on semiconductors, metals, etc., due to its superior electrical insulation property compared to silicate or alumina. However, the insulating quality of MgO is degraded owing to high hygroscopicity, surface staining, and surface defects. In order to improve these problems, powders of a new binary system were synthesized by substituting various transition metal ions for some Mg ions in MgO, based on co-precipitation method using chloride precursors as starting materials. The characteristics of powders, such as size, shape, microstructure, were evaluated according to the type and content of substitutional element, slurry pH, and the amount and type of catalyst. As a result, the optimum powder composition in the binary system could be derived for forming the MgO-based insulation coating layer with the more improved characteristics, compared to that of the insulation layer using only MgO,