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Additive manufacturing synthesis using laser engineered net shaping (LENS) is utilized to rapidly print libraries of mischmetal (MM = La, Ce, Nd, and Pr) containing RTMB alloys (R = MM + separated Nd and TM = Fe and Co) enabling robust evaluation of physical properties over a wide composition range. High throughput characterization of the magnetic and thermal properties are used to identify compositions for potential high temperature, high-performance permanent magnets with reduced critical rare-earth elements. Improved Curie temperature (T~500°C) is obtained with substitution of Fe by Co in pseudo-ternary RTMB alloys. Furthermore, a four-fold decrease in the Nd content can be achieved through substitution with less critical Ce- and La-rich MM, while retaining high T. Guided by the properties of the LENS printed samples, selected compositions with and without TiC additions are synthesized via melt-spinning techniques to produce nanostructured ribbons. The maximum room temperature coercivity (H) and energy product ((BH)) without TiC are found to be 5.8 kOe, 8.5 MGOe, respectively, while TiC additions as a grain refiner gave H and (BH) of 4.9 kOe, 9.8 MGOe, respectively. Structural characterization of the melt-spun ribbons shows homogenous grain refinement with TiC additions, which leads to an increase in the energy product.
This article was published in the following journal.
Name: ACS combinatorial science
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Alloys that contain a high percentage of gold. They are used in restorative or prosthetic dentistry.
Rapid methods of measuring the effects of an agent in a biological or chemical assay. The assay usually involves some form of automation or a way to conduct multiple assays at the same time using sample arrays.
The fusion of ceramics (porcelain) to an alloy of two or more metals for use in restorative and prosthodontic dentistry. Examples of metal alloys employed include cobalt-chromium, gold-palladium, gold-platinum-palladium, and nickel-based alloys.
Large collections of small molecules (molecular weight about 600 or less), of similar or diverse nature which are used for high-throughput screening analysis of the gene function, protein interaction, cellular processing, biochemical pathways, or other chemical interactions.
Specific alloys not less than 85% chromium and nickel or cobalt, with traces of either nickel or cobalt, molybdenum, and other substances. They are used in partial dentures, orthopedic implants, etc.