Crystal Structure and Bonding in Intermetallic Compounds

2019 ◽  
Author(s):  
Yuri Grin
Keyword(s):  
Crystal Structure ◽  
Intermetallic Compounds ◽  
Structure And Bonding

Intermetallics of Aluminum

2019 ◽  
Author(s):  
Georg Frommeyer ◽  
Sven Knippscheer
Keyword(s):  
Crystal Structure ◽  
Mechanical Properties ◽  
Plastic Deformation ◽  
High Temperature ◽  
Physical Properties ◽  
Intermetallic Compounds ◽  
Oxidation Behavior ◽  
Physical And Mechanical Properties ◽  
Structural Materials

Aluminum-rich intermetallic compounds of the Al3X-type with transmission metals (X = Ti. Zr, Nb, V) of Groups IVb and Vb are of interest in the development of novel high-temperature and lightweight structural materials. This article describes the important physical and mechanical properties of trialuminides with DO22 structure and their L12 variations. Topical coverage includes: crystal structure and selected physical properties, plastic deformation, oxidation behavior, and applications.

NEW INTERMETALLIC COMPOUNDS IN THE TERNARY SYSTEM Yb-T-Al (T=Ag, Au, Pd, Pt)

1993 ◽  
Vol 07 (01n03) ◽  
pp. 391-394 ◽  
Author(s):  
G. CORDIER ◽  
R. HENSELEIT
Keyword(s):  
Crystal Structure ◽  
Rare Earth ◽  
Transition Metal ◽  
Ternary System ◽  
Crystal Structures ◽  
Intermetallic Compounds ◽  
Structural Characteristics ◽  
Type Structure ◽  
Structural Elements ◽  
New Compounds

Structural characteristics of a number of ternary rare earth/transition metal/aluminium compounds are hexagonal nets of the AlB 2-type, Kagomé nets and tetragonal pyramides. Crystal structures of the new compounds in the ternary Yb-T-Al systems contain units and sections of them. Kagomé nets stacked in an ..ABAB.. sequence are observed in YbAg1.5Al0.5 ( MgZn 2-type). The crystal structure of Yb8Ag21Al45 is related to the BaHg 11-type. YbAu0.8Al3.2 ( CaZn 2 Al 2-type) contains tetragonal pyramides which are connected by common edges. Fragments of the AlB 2- and BaAl 4-type structure are present in Yb5Au15Al16. YbPdAl2 and YbPtAl2 ( YbPdAl 2-type) contain pentagonal prisms as the characteristic structural elements.

scholarly journals Crystal Structure and Bonding in BaAu5Ga2 and AeAu4+xGa3–x (Ae = Ba and Eu): Hexagonal Diamond-Type Au Frameworks and Remarkable Cation/Anion Partitioning in the Ae–Au–Ga Systems

2014 ◽  
Vol 54 (3) ◽  
pp. 1010-1018 ◽  
Author(s):  
Volodymyr Smetana ◽  
Simon Steinberg ◽  
Nathan Card ◽  
Anja-Verena Mudring ◽  
Gordon J. Miller
Keyword(s):  
Crystal Structure ◽  
Hexagonal Diamond ◽  
Structure And Bonding ◽  
Diamond Type

Structure and Bonding of Bromoantimonate (III) Complexes with Unusual Valency by Means of NQR and Powder X-Ray Diffraction

1994 ◽  
Vol 49 (1-2) ◽  
pp. 185-192 ◽  
Author(s):  
Tsutomu Okuda ◽  
Yoshihiro Kinoshita ◽  
Hiromitsu Terao ◽  
Koji Yamada
Keyword(s):  
Crystal Structure ◽  
Phase Transition ◽  
Bond Length ◽  
X Ray Diffraction ◽  
X Ray ◽  
Structure And Bonding ◽  
Bond Character

Abstract NQR and powder X-ray diffraction were observed for several bromoantimonate (III) complexes which contain CnH2n+1NH3 (n = 1 -3) or (CnH2n+1)2NH2(n = 1 -4) as a cation. The bond character, anion structure, crystal structure, and phase transition are discussed on the basis of the three-center-four-electron bond. A good correlation was found between the halogen NQR frequency and the Sb-X bond length.

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