Advanced Wear-Resistant Nano-composites for Increased Energy Efficiency

Personnel

Overview

AlMgB14-based composites are a new class of super-hard materials developed at Ames Laboratory. Initial studies of AlMgB14 composites demonstrate the potential for obtaining a high-wear-resistance material through powder metallurgy processing. However, the approach employed to prepare these composite samples is based on research-scale mechanical alloying and hot pressing. To be used commercially, the composites need production in larger quantities and in a more cost efficient manner.

The goals of this project are to increase operating efficiency and operating lifetime of industrial pumping systems and other wear-intensive industrial components. This is achieved by developing and commercializing a family of ceramic-based composites, that show outstanding wear-resistance in laboratory tests. A major objective of the proposed effort is to develop a cost-effective, industrial-scale processing, and synthesis method for making AlMgB14 composites capable of producing bulk materials possessing comparable or even improved wear-resistance properties compared to the research-scale compacts. Optimization of composition and processing on the laboratory scale will serve as an initial milestone, providing industrial processing partners with a "template" for developing their industrial-scale procedures. Emphasis will be placed on examining alternate powder processing techniques, and powder blending and densification methods to eliminate porosity and achieve products exhibiting a maximum combination of hardness and toughness. Successful development of these new wear-resistant composites is expected to result in U.S. energy savings of 31 trillion BTU/year by 2030.

Publications

2010
Cook B A; Russell A M; Peters J; Harringa J L . 2010. Estimation of surface energy and bonding between AlMgB14 and TiB2. Journal of Physics and Chemistry of Solids. 71:824-826. abstract
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2009
Ahmed A; Bahadur S; Russell A M; Cook B A . 2009. Belt abrasion resistance and cutting tool studies on new ultra-hard boride materials. Tribology International. 42:706-713. abstract
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Peters J S; Cook B A; Harringa J L; Russell A M . 2009. Erosion resistance of TiB2-ZrB2 composites. Wear. 267:136-143. abstract
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Chen Q; Li D Y; Cook B . 2009. Is porosity always detrimental to the wear resistance of materials?-A computational study on the effect of porosity on erosive wear of TiC/Cu composites. Wear. 267:1153-1159. abstract
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Peters J S; Cook B A; Harringa J L; Russell A M . 2009. Microstructure and wear resistance of low temperature hot pressed TiB2. Wear. 266:1171-1177. abstract
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