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Meeting Materials Science & Technology 2019
Symposium Multifunctional Ceramic- and Metal-matrix Composites: Processing, Microstructure, Properties and Performance
Presentation Title Thermally-Conductive, Mechanically-Robust, Net-Shape Ceramic/Metal Composites for High-Temperature Concentrated Solar Power
Author(s) Kenneth H. Sandhage, Mario Caccia, Meysam Tabandeh-Khorshi, Grigorios Itskos, Alex Strayer, Adam Caldwell, Supattra Singnisai, Anthony Schroeder, Mark Anderson, Andres Marquez-Rossy, Edgar Lara-Curzio, Sandeep Pidaparti, Devesh Ranjan, Andrew Rohskopf, Asegun Henry
On-Site Speaker (Planned) Kenneth H. Sandhage
Abstract Scope The cost of electricity from concentrated solar power plants may be significantly reduced by operating at higher temperatures. However, a major hurdle has been the development of compact heat exchangers (HEXs) for >750oC operation with high-pressure working fluids. The maximum stresses that can be sustained by conventional stainless steels and Ni-based alloys decline rapidly above 550oC. In this talk, multifunctional cermets, such as ZrC/W composites, will be discussed as attractive alternative HEX materials.[1] At 800oC, ZrC/W composites are stiff, possess relatively high failure strengths (>350 MPa), and are 2-3 times more thermally conductive than stainless steels and Ni-based alloys. ZrC/W composites are thermally cyclable, owing to similarly low CTEs for ZrC and W. ZrC/W composites can also be fabricated in complex shapes via a cost-effective, shape-preserving reactive infiltration process. [1] M. Caccia, et al., "Ceramic-Metal Composites for Heat Exchangers in Concentrated Solar Power Plants," Nature, 562 (7727) 406-409 (2018).


Comparison of In-situ Aluminum Metal Matrix Composite Processes
Fabrication and High-temperature Bending Strength of Fully-dense ZrB2/50vol%B4C Composites
Fabrication of Stainless Steel Matrix Composite Reinforced with 3D Networked TiN
Mechanical Response of Graphene-Loaded Silicon Oxycarbide
Mechanical Strengthening of Aluminosilicate Composites with Graphene Oxide Fillers
Nanocarbon-reinforced Metal-matrix Nanocomposites
P2-66: Test and Evaluation of SiC/SiC Composites for High Temperature Components of the H-class Gas Turbine
P2-67: Hybrid Ceramic Matrix Composites
Shear-Assisted Processing and Extrusion: A novel solid phase processing of making bulk size metal-matrix-composite without agglomeration
Thermally-Conductive, Mechanically-Robust, Net-Shape Ceramic/Metal Composites for High-Temperature Concentrated Solar Power

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