Alloy single crystal

Potter HC, Blakeley JM (1975) LEED, Auger spectroscopy, and contact potential studies of copper-gold alloy single crystal surfaces. J Vac Sci Technol 12 635-642... 

C.2.1. PdlAl20s Preparation and Structural Properties. To prepare a thin well-ordered AI2O3 model support, a NiAl(l 10) alloy single crystal was oxidized in 10 mbar of O2 at 523 K (290). The structure of the alumina film was examined by a variety of techniques (see Reference (101) and references cited therein), and recently it was even possible to image its atomic structure by STM at 4K (Fig. 19) (215). The alumina film was only approximately 0.5 nm thick and hydroxyl-free, and one should also keep in mind that its exact structure may deviate from those of bulk aluminas (101,215,292,293). Its properties are certainly influenced by the observed line defects (antiphase domain boundaries and reflection domain boundaries). 

Scheme 2.1 Reaction network for crotonaldehyde hydrogenation over Pt and Pt-Sn alloy single crystals...

Table 8.1 Hexagonal structures identified in a variety of metal and metal-oxide overlayers on metallic and alloy single-crystal substrates... 

Bimetallic alloy surfaces are also of great importance. Most metallic materials used commercially, and in particular metal-based, heterogenous catalysts, have multicomponent alloy phases. Despite their obvious importance, alloy single-crystal surfaces have not been studied so extensively in the past. A first step in understanding the chemistry of these surfaces is a thorough characterization of the structure of such surfaces. These attempts are part of efforts to overcome the material gap between commercial catalysts and surface-science studies. 

Available forms Ingots sheet wire tubing powder leaf alloys with copper or other metals, the gold content being expressed in carats (the number of parts of gold in 24 parts of alloy). Single crystals and aqueous colloidal suspensions. Leaf may be made in near-colloidal thickness one troy ounce covers 68 sq ft at 0.0001 inch thickness. 

Determination of non-stoichiometric behavior (i.e., minerals, alloys, single crystals, etc.). 

X-ray Photoelectron Spectroscopy and Scanning Tunneling Microscopy Studies of Thin Anodic Oxide Overlayers on Metal and Alloy Single-Crystal Surfaces... 

AR-XPS has been extensively used to investigate the chemical composition, the chemical states and the thickness of thin anodic oxide overlayers (passive films) formed on well-defined metal and alloy single crystal surfaces. More recently direct imaging of the surface structure by STM with atomic resolution provided new data on the crystallinity, the epitaxy and the nature of the structural defects existing in the thin oxide layers. Such data are useful... 

Adsorption-induced reconstruction, surface metal atom, 245 Adsorption isotherms, development, 4/,5 Alcohols, role in photooxidation reaction of water on n-Ti02 electrode, 297-308 Alloy single-crystal surface, thin anodic oxide overlayers, 236-244 Alloy surfaces, chemical reconstruction, 246-247... 

Watson DJ, Attard GA. The electro-oxidation of glucose using platinum-palladium bulk alloy single crystals. Electrochim Acta 2001 46 3157-61. 

For all but a few very specialised applications, e.g. magnet alloys, single crystal turbine blades, fine-grained equiaxed structures are... 

Kloske, R.A. Solid solution strengthening and yield drop effects in Au-Ag alloy single crystals containing 1 to 5 and 95 to 99 at. pet. Ag. Trans. Metall. Soc AIME 1969, 245, 217-225. 

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