AI Article Synopsis
- A new method has been developed to prepare ultrafine grain-sized Sm2Co17 nanocrystalline bulk material with a hexagonal crystal structure.
- This nanocrystalline form exhibits enhanced thermal stability and significantly higher intrinsic coercivity compared to the traditional polycrystalline alloy, which has a rhombohedral structure.
- Additionally, the nanocrystalline Sm2Co17 demonstrates substantial increases in microhardness and elastic modulus, achieving improvements of 1.8 and 2.6 times, respectively, over its polycrystalline counterpart.
Article Abstract
A novel route for the preparation of the single-phased Sm2Co17 nanocrystalline bulk with ultrafine grain sizes was proposed. It was found that the nanocrystalline Sm20Co17 has a hexagonal crystal structure at the room temperature, which shows a different thermal stability from the conventional polycrystalline alloy. The intrinsic coercivity of the nanocrystalline Sm2Co17 with a hexagonal crystal structure was greatly increased as compared with the single-phased polycrystalline alloy with a rhombohedral structure. The microhardness and the elastic modulus of the nanocrystalline Sm2Co17 bulk were increased as high as 1.8 and 2.6 times, respectively, when compared with the polycrystalline parent alloy.
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| http://dx.doi.org/10.1166/jnn.2009.1203 | DOI Listing |
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Preparation and properties characterization of the single-phased Sm2Co17, nanocrystalline alloy.
J Nanosci Nanotechnol
September 2009
College of Materials Science and Engineering, Key Lab of Advanced Functional Materials, Chinese Education Ministry, Beijing University of Technology, Beijing 100124, China.
Article Synopsis
- A new method has been developed to prepare ultrafine grain-sized Sm2Co17 nanocrystalline bulk material with a hexagonal crystal structure.
- This nanocrystalline form exhibits enhanced thermal stability and significantly higher intrinsic coercivity compared to the traditional polycrystalline alloy, which has a rhombohedral structure.
- Additionally, the nanocrystalline Sm2Co17 demonstrates substantial increases in microhardness and elastic modulus, achieving improvements of 1.8 and 2.6 times, respectively, over its polycrystalline counterpart.
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