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Titolo:
Anisotropy of surface roughness on aluminium sheet studied by atomic forcemicroscopy
Autore:
Ryan, GW;
Indirizzi:
La Trobe Univ, Sch Phys, Bundoora, Vic 3083, Australia La Trobe Univ Bundoora Vic Australia 3083 , Bundoora, Vic 3083, Australia
Titolo Testata:
MICROSCOPY AND MICROANALYSIS
fascicolo: 2, volume: 6, anno: 2000,
pagine: 137 - 144
SICI:
1431-9276(200003/04)6:2<137:AOSROA>2.0.ZU;2-4
Fonte:
ISI
Lingua:
ENG
Soggetto:
SCANNING TUNNELING MICROSCOPY;
Keywords:
surface roughness; atomic force microscopy; aluminium sheet; mean roughness; root mean square roughness; lubrication; rolling contacts;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Physical, Chemical & Earth Sciences
Citazioni:
10
Recensione:
Indirizzi per estratti:
Indirizzo: Ryan, GW La Trobe Univ, Sch Phys, Bundoora, Vic 3083, Australia La Trobe Univ Bundoora Vic Australia 3083 a, Vic 3083, Australia
Citazione:
G.W. Ryan, "Anisotropy of surface roughness on aluminium sheet studied by atomic forcemicroscopy", MICROS MICR, 6(2), 2000, pp. 137-144

Abstract

Atomic force microscope images of aluminium sheet are used to calculate the mean roughness Rd and the root mean square roughness Rq for different directions (theta) across the samples. The angle determined values of Ra(theta) and Rq(theta) are significantly lower in the rolling direction than in any other direction. The results provide a clear demonstration of the vector nature of surface roughness. Local features in an angle determined Ra(theta) profile are also compared with the positions of peaks and valleys in the matching topographical cross-section of the surface running at right anglesto theta. It is further found that the distribution of z heights for an imaged sample is usually not Gaussian in shape unless the z heights are measured about mean lines constructed across the surface parallel with the rolling direction. The results are relevant for controlling lubrication performance in the aluminium rolling process.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 11/07/20 alle ore 21:14:21