کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9803159 | 1516463 | 2005 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Thermodynamic characteristics of the Al- and Cu-doped NdNiIn hydrides
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The Pressure-Composition-Temperature (P-C-T) relationships in the NdNiIn-based Cu- and Al-containing Nd(Ni1âxCux)(In1âyAly)-H systems were measured volumetrically in the temperature range of 298-348âK. The P-C-T diagrams show clear plateaux regions indicating a formation of two hydride phases, β- (â¼ 0.6âat.âH/f.u.) and γ- (1.3-1.5âat.âH/f.u.) hydrides. The β-hydride is rather stable and does not decompose at hydrogen pressures above 10â3âMPa within the applied range of temperatures. The substitutions cause significant modifications of the P-C-T diagrams. These changes proceed differently for the Cu- and Al-containing systems. The relative partial molar thermodynamic properties for the studied system are: ÎHH=â19.4±0.6 âkJâ(molH)â1, ÎSH=â56.0±1.4 âJâ(Kâ
molH)â1 for NdNiIn-H; ÎHH=â22.6±1.6 âkJâ(molH)â1, ÎSH=â68.8±3.6 âJâ(Kâ
molH)â1 for NdNi0.98Cu0.02In-H; ÎHH=â23.5±1.3 âkJâ(molH)â1, ÎSH=â72.2±3.1 âJâ(Kâ
molH)â1 for NdNiIn0.95Al0.05-H systems.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volumes 404â406, 8 December 2005, Pages 43-46
Journal: Journal of Alloys and Compounds - Volumes 404â406, 8 December 2005, Pages 43-46
نویسندگان
Masashi Sato, R.V. Denys, A.B. Riabov, V.A. Yartys,