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Abstract
Abstract
The crystal structure of the orthorhombic ε-Al4Cr phase in the Al–Cr system was determined by single crystal X-ray structure analysis: space group Cmcm (No. 63), a = 12.521(1)Å, b = 34.705(2) Å, c = 20.223(1) Å, V = 8787.7(9) Å, Pearson symbol oC58420.48, Z = 8, Mr
= 2256, composition Al56.23Cr14.21, D
x = 3.41 g/cm3; F(000) = 8576, λ (MoKα
) = 0.71069 Å, μ = 4.510 mm−1, room temperature, R = 0.068 for 2839 reflections, goodness of fit S = 1.084. There are 55 (13Cr + 42 Al) independent atoms in the unit cell, in which 12 Cr atoms and 28 Al atoms have icosahedral coordination. Interatomic distances cover the ranges of 2.570 Å ∼ 2.646 Å, 2.421 Å ∼ 2.978 Å, and 2.480 Å ∼ 2.983 Å, for Cr–Cr, Cr–Al and Al–Al atomic pairs, respectively. The crystalline phase appears obviously as a layered structure perpendicular to the a-axis. A typical aggregation of the icosahedral clusters in the structure of the ε-Al4Cr phase has been pointed out.
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Erratum to “Nanoscale effects on interfacial reactions”. J Electroanal Chem (Lausanne) 2005. [DOI: 10.1016/j.jelechem.2005.04.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Bergman C, Gas P, Mangelinck D. Nanoscale effects on interfacial reactions. J Electroanal Chem (Lausanne) 2004. [DOI: 10.1016/j.jelechem.2004.06.025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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