Compressibility and thermal expansion of LaNi5 and its substitutional derivatives (LaNi5−xMx; M=Mn, Al, Co)

Examination of Multiphase (Zr,Ti)(V,Cr,Mn,Ni)2 Ni-MH Electrode Alloys: Part II. Solid-State Transformation of the Interdendritic B2 Phase

“…[8] Joubert et al later refined the structure as centrosymmetic Cmca (a = 1.2381 nm, b = 0.9185 nm, c = 0.9221 nm). [9] The metastable tetragonal structure of Zr 7 Ni 10 with space group I4/mmm was shown to form after dehydrogenation of its corresponding hydride or by rapid melt quenching. [10,11] The dominating crystal structure of Ti x Zr 7-x Ni 10 (x between 0 and 2.5) is also orthorhombic before and turns into tetragonal after hydrogenation.…”

Studies on La based intermetallic hydrides to determine their suitability in metal hydride based cooling systems

“…The XRD patterns for the LaNi 5 , LaNi 4.7 Al 0.3 and LaNi 4. 6 Al 0.4 alloys were previously reported [1]. The XRD patterns ( Fig.…”

“…Therefore, in the present study, we tried to fine tune some La based (La 0.9 Ce 0.1 Ni 5 , La 0.8 Ce 0.2 Ni 5 , LaNi 4.7 Al 0.3 and LaNi 4. 6 Al 0.4 ) intermetallic hydrides to identify the MH pair which gives the best MHCS performance. It brings a systematic study on the effects of MH bed composition and hydrogen concentration on the parameters like reaction enthalpy, driving potential, and rate and amount of hydrogen transfer between metal hydride beds, which influence the cooling system performance.…”

Numerical simulation of the parametric influence on the wall strain distribution of vertically placed metal hydride based hydrogen storage container

“…The stress state on any diametral plane will be identical. As the hydride volume increases linearly with hydrogen concentration [14], an effective expansion coefficient which accounts for both thermal expansion and volume expansion of alloy particles during hydriding is formulated as given below.…”