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- Title
Effect Of The Desorption-Recombination Temperature On The Microstructure And Magnetic Properties Of HDDR Processed Nd-Fe-B Powders.
- Authors
Lee, J.-G.; Cha, H.-R.; Liu, S.; Yu, J.-H.; Baek, Y.-K.; Kwon, H.-W.
- Abstract
The effect of the desorption-recombination temperature on the microstructure and magnetic properties of hydrogenation-disproportionation-desorption-recombination (HDDR) processed Nd-Fe-B powders was studied. The Nd xB6.4Ga0.3Nb0.2Fe bal (x=12.5-13.5, at.%) casting alloys were pulverized after homogenizing annealing, and then subjected to HDDR treatment. During the HDDR process, desorption-recombination (DR) reaction was induced at two different temperature, 810°C and 820°C. The higher Nd content resulted in enhanced coercivity of the HDDR powder, and which was attributed to the thicker and more uniform Nd-rich phase along grain boundaries. But this uniform Nd-rich phase induced faster grain growth. The remanence of the powder DR-treated at 820°C is higher than that DR-treated at 810°C. In addition, it was also confirmed that higher DR temperature is much more effective to improve squareness.
- Subjects
SYNTHETIC biosilk; MECHANICAL behavior of materials; TITANIUM alloy metallography; RAPID prototyping; FABRICATION (Manufacturing)
- Publication
Archives of Metallurgy & Materials, 2015, Vol 60, Issue 2, p1499
- ISSN
1733-3490
- Publication type
Article
- DOI
10.1515/amm-2015-0160