Fundamental Phenomena in the Materials Sciences: Volume 2: Surface Phenomena

ISBN-13: 9781468487053 / Angielski / Miękka / 2012 / 208 str.

L. J. Bonis; H. H. Hausner

Opis

wcrd than surface because-unless the sclid is suspended in a vacuum-it is in ccntact with a gas, a liquid, cr ancther sclid, and it is the interface between the sclid and the cther body which is the fccus cf interest in surface phencmena). The literature dces nct ccntain any useful definiticn cf this term. The term surface cr interface can be defined cnly if cne ccnsiders the characteristics cf the bulk material, the ccnditicn cf the surface under discussicn, the envircnment, and its reacticn with the surface. The emphasis, hcwever, shculd be given to' the problem under which the surface is discussed. In this way, the basic questicn can be answered as to' whethe. r a surface is twc-dimensicnal cr whether it has depth and is, therefcre, three -dimensicnal. This vclume ccnsists cf a ccmpilaticn cf ten papers, tcgether with discussicns, presented at the 1964 Sympcsium. In the first chapter, H. C. Gatcs (Massachusetts Institute cf Technclcgy) dis- cusses the structure and electrcnic ccnfiguraticn cf crystalline surfaces. He ccvers three different aspects cf surfaces-their chemical behavicr, their structural prQperties, and their electrQnic prQperties. With respect to' chemical behaviQr, the interrelatiQn- ship between unsaturated bonds and lattice ccnfiguratiQn is Qf prime impQrtance. In a diamQnd cubic cQnfiguratiQn, as was shQwn in a mQdel, the degree Qf unsaturatiQn cr, in Qther wQrds, the density cf free bonds varies with the respective crystalline surface.

Spis treści

The Structure and Electronic Configuration of Crystalline Surfaces.- Present and Proposed Uses of Low-Energy Electron Diffraction in Studying Surfaces.- The Effects of Oxide and Organic Films on Sliding Friction.- The Deformational and Geometrical Aspect of Surfaces in Sliding Contact.- Effect of Surface Energy on Lubrication.- Problems of Producing a Clean Surface by Outgassing in Ultrahigh Vacuum.- Physical Adsorption by Homogeneous and Heterogeneous Solid Surfaces.- The Relation of the Attractive Forces at Interfaces to Wetting, Spreading, Adsorption, and Long-Range Attractive Forces.- Solid-to-Solid Adhesion.- Spreading, Penetration, and Capillary Flow in Metallic Systems.- Bibliography on Surface Phenomena (Selected References, 1963–1965).