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- W2087859969 abstract "Abstract The hydrogenation, disproportionation, desorption and recombination (HDDR) process in Sm 2 Fe 17 , Sm 10.2 Fe 85.8 Nb 4 and Sm 9.5 Fe 80.5 Nb 10 alloys has been investigated by means of hydrogen absorption and desorption studies, electrical resistivity measurements and microstructural observations. Thermopiezic analysis (TPA) shows that the addition of Nb increases the disproportionation temperature of the Sm 2 Fe 17 matrix phase. Differences in reaction rates of disproportionation and recombination during solid-HDDR processing for the alloys with various Nb contents at T = 800°C and p (H 2 ) = 1.0 bar have been revealed, showing that the 4 at% Nb-containing alloy has the lowest reaction rates. The disproportionated mixture consists of rods of Sm hydride embedded in an α-Fe matrix; the distribution of the paramagnetic NbFe 2 -type Laves phase remains unchanged during the overall process. A coarsening of the eutectic mixture was observed during recombination. The 2 17 -matrix phase of the fully recombined material exhibits a uniform, submicron grain size." @default.
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- W2087859969 date "1996-01-01" @default.
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- W2087859969 title "Studies of HDDR processes in Sm2Fe17, Sm10.2Fe85.8Nb4 and Sm9.5Fe80.5Nb10 alloys" @default.
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- W2087859969 doi "https://doi.org/10.1016/0925-8388(95)02041-1" @default.
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