Results 261 to 270 of about 103,994 (289)
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Abrasion and surface structure
Wear, 1969Abstract The nature of the surface structure of abraded materials is described, mainly as it is shown, very sensitively, by electron diffraction at grazing incidence. The Presence, nature and orientation of abrasive particles embedded in the surface, when bonded abrasives are used, is indicated. Other impurities, e.g.
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Surface Finishing Using Soft Abrasives
1983In an effort to produce scratch- and damage-free flat surfaces, two non-conventional polishing techniques, mechano-chemical and float, were recently introduced by Yasunaga et al. and Namba and Tsuwa, respectively. The emphasis in both these techniques is on employing an abrasive whose hardness is less than that of the workpiece.
H Vora, RH Anderson, RJ Stokes
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Improvement of Local Surface Quality by Using Single Abrasive Abrasion Process
Tribology Letters, 2007AFM-based wear process actually is single abrasive abrasion process. It is widely employed in the surface micro/nano machining for fabrication of structures at the nanometer scale exhibiting high removing ability of nanometer scale materials. In this study, application of AFM-based single abrasive abrasion process in the local surface quality (surface ...
Yongda Yan, Tao Sun, Shen Dong
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The particle size effect in abrasion studied by controlled abrasive surfaces
Wear, 1999The effect of abrasive particle size on the wear rate is well known. For small particles the wear rate increases with increasing particle size. Above some critical size the wear rate becomes almost independent of further size increases. Several theories have been presented to explain the size effect.
Rickard Gåhlin, Staffan Jacobson
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Abrasives selection for surface pretreatment
Transactions of the IMF, 2009Choosing the correct abrasive for impact treatment processes is a bewildering process. There are three different types of fused alumina, there are glass beads and ceramic beads, steel shot, chilled iron and steel grit, plastic abrasives, vegetable abrasives, silicon carbide – the list is almost endless!
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Sharpness of abrasive particles and surfaces
Wear, 2004Abstract The concept of asperity sharpness has recently been developed into a technique for the description of abrasive particle shape. This paper reveals further discoveries on the nature of particle shape and applies sharpness concepts to nominally planar abrasive surfaces composed of self-arranged particle stacks.
D.V De Pellegrin, G.W Stachowiak
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Abrasion Damage to Lightguide Fiber Surfaces
MRS Proceedings, 1998AbstractThe two general types of strength-reducing defects most commonly found in lightguide fibers are those due to chemical interactions of refractory particles with the hot glass and those due to mechanical damage resulting from indentation or scratching. In this paper we review some work on the mechanical damage in silica lightguide fibers and some
C. R. Kurkjian +2 more
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Abrasion Resistance of Surface-Treated Concrete
Cement, Concrete, and Aggregates, 1988Abstract This paper describes a laboratory study of surface treatments on the abrasion resistance of concrete. A test method based on rotating steel wheels running in a circular path was adopted to assess the abrasion resistance. The reported data are from a series of tests performed on relatively large slabs so that power trowelling and
M Sadegzadeh, RJ Kettle
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Surfaces created by abrasive waterjet
2011Abrasive waterjet is one of the most rapidly improving technologal methods of cutting materials. AWJ represents cold, precise, computer controlled shape cutting without any strain. These attributes pose this technology to the position of permanent use in the future.
Valiček, Jan +4 more
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Surface roughness in diamond abrasive finishing
Journal of Superhard Materials, 2009Polished surface roughness is shown to depend on a ratio of natural vibration frequencies of molecular fragments on the tool and workpiece surface. The factors that have the greatest effect on the machined surface roughness are the following: (a) the number of molecular fragments the debris particles consist of, (b) the most probable size of the ...
Yu. D. Filatov +5 more
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