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pro vyhledávání: '"N. X. Randall"'
Despite active development over the past 15 years, contemporary nanoindentation methods still suffer serious drawbacks, particularly long thermal stabilization and thermal drift, which limit the duration of the measurements to only a short period of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::db50d1830cd2a96cd13e383d48d8fb26
http://doc.rero.ch/record/289441/files/S0884291400032350.pdf
http://doc.rero.ch/record/289441/files/S0884291400032350.pdf
Autor:
N. X. Randall, David F. Bahr, E. W. Osborne, M. G. Norton, Mohamad B. Zbib, M. C. Tarun, R. Nair
Publikováno v:
Journal of Materials Science. 45:1560-1566
Polysilicon granular beads grown via a fluidized bed reactor, a feedstock for silicon solar cell production, were annealed, sectioned, and indented using a combination of nanoindentation and microhardness testing to determine the mechanical response
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8815d316e8dc000770eb445be675ec7f
https://doi.org/10.1007/s10853-009-4124-1
https://doi.org/10.1007/s10853-009-4124-1
Autor:
N. X. Randall
Publikováno v:
Tribotest. 10:365-374
The purpose of tribology is to improve the service life and efficiency of machines and their elements. This paper describes certain tests that can be done on a modified pin-on-disc apparatus to match in-service conditions more closely. The three exam
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5f5e1bed3fe3ddfa68e688fbb7cdcee1
https://doi.org/10.1002/tt.3020100406
https://doi.org/10.1002/tt.3020100406
Autor:
R. Consiglio, N. X. Randall
Publikováno v:
Review of Scientific Instruments. 71:2796-2799
Quantitative instrumentation has become a necessity for adequate evaluation of material properties, particularly scratch resistance and adhesion at the film-substrate interface. The nanoscratch tester is a new instrument that combines the features of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::18fcd00eb6da68726957ddadb3a8f7d0
https://doi.org/10.1063/1.1150695
https://doi.org/10.1063/1.1150695
Publikováno v:
Surface and Coatings Technology. 125:179-184
Due to its excellent oxidation and wear resistance, CrN is a prominent material for protective coatings. Still, its comparatively low hardness prevents CrN from being widely used in industrial applications. Thin films of Cr 1− x W x N y with 0≤ x
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6577cee32f948261fabf32d7eaf5c007
https://doi.org/10.1016/s0257-8972(99)00541-1
https://doi.org/10.1016/s0257-8972(99)00541-1
Publikováno v:
Journal of Materials Research. 14:3623-3629
Among the oxides, Cr2O3 exhibits the highest hardness value and a low coefficient of friction. These properties make chromium oxide an excellent coating material for tribological applications. Cr2O3 thin films were deposited by radio-frequency reacti
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ada184bc2b1373cc79bd8f8fbb10504c
https://doi.org/10.1557/jmr.1999.0489
https://doi.org/10.1557/jmr.1999.0489
Autor:
N. X. Randall, Jean-Luc Bozet
Publikováno v:
Wear. 212:18-24
In conventional pin-on-disk testing of the tribological characteristics of two different materials in sliding contact, the main parameters of interest are notably the friction and wear properties of the material pair. However, when two bodies consist
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4de4d9be25708a45a42225b1b0eb962a
https://doi.org/10.1016/s0043-1648(97)00145-2
https://doi.org/10.1016/s0043-1648(97)00145-2
Publikováno v:
Packaging Technology and Science. 9:73-85
Water and oxygen permeability measurements on two polymers, poly(ethylene terephthalate) and polypropylene, are presented as a function of diamond-like carbon coating thickness. Results show that reliable and reproducible coatings can be achieved on
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::21e6aebee327c6d086301122874211a4
https://doi.org/10.1002/(sici)1099-1522(199603)9:2<73::aid-pts353>3.0.co
https://doi.org/10.1002/(sici)1099-1522(199603)9:2<73::aid-pts353>3.0.co
Publikováno v:
Geophysical Research Letters. 39
[1] The mechanical response of geomaterials is highly influenced by geometrical and material heterogeneity. To date, most modeling practices consider heterogeneity qualitatively and their choice of input parameters can be subjective. In this study, a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f208027af0b2073358ccd37a2a0a1aaa
https://doi.org/10.1029/2011gl050411
https://doi.org/10.1029/2011gl050411
Autor:
N. X. Randall
Publikováno v:
ASME/STLE 2007 International Joint Tribology Conference, Parts A and B.
This presentation will focus on recent developments in the localized characterization of the mechanical properties of Microsystems and MEMS devices and structures. Conventional indentation techniques provide a highly powerful method for measuring the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ec1b9bf4caa2c11a87b444f4ed3eef44
https://doi.org/10.1115/ijtc2007-44018
https://doi.org/10.1115/ijtc2007-44018