Zobrazeno 1 - 10
of 45
pro vyhledávání: '"Seung Kun Lee"'
Autor:
Seung Kun Lee, Readey, Michael J.
Publikováno v:
Journal of the American Ceramic Society. Jun2002, Vol. 85 Issue 6, p1435. 6p. 4 Black and White Photographs, 3 Graphs.
Publikováno v:
Journal of the American Ceramic Society. 81:1509-1520
A model of strength degradation for ceramics subject to damage from contact with hard spheres is developed. Primary attention is focused on tough ceramics with heterogeneous microstructures which deform in a quasi-plastic mode. Brief consideration is
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::87484d1d85d67fa223fb610042289a50
https://doi.org/10.1111/j.1151-2916.1998.tb02510.x
https://doi.org/10.1111/j.1151-2916.1998.tb02510.x
Publikováno v:
Journal of the American Ceramic Society. 81:571-580
An analysis of transverse cracks induced in brittle coatings on soft substrates by spherical indenters is developed. The transverse cracks are essentially axisymmetric and geometrically conelike, with variant forms dependent on the location of initia
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::de34cba87fc4a0899a177933aeff5b15
https://doi.org/10.1111/j.1151-2916.1998.tb02376.x
https://doi.org/10.1111/j.1151-2916.1998.tb02376.x
Publikováno v:
Journal of the American Ceramic Society. 81:225-228
The evolution of deformation—;microfracture damage below Hertzian contacts in a coarse-grain Ti3SiC2 is studied. The Hertzian indentation stress—;strain response deviates strongly from linearity beyond a well-defined maximum, with pronounced stra
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1c9297bdb8c71f70688c5d5c60cc59a6
https://doi.org/10.1111/j.1151-2916.1998.tb02320.x
https://doi.org/10.1111/j.1151-2916.1998.tb02320.x
Publikováno v:
Journal of the American Ceramic Society. 81:2394-2404
A study is made of the damage resistance of silicon nitride bilayers consisting of a hard overlayer (coating) on a soft underlayer (substrate). The two layers are fabricated with different starting powders, to provide distinctive elongate-grain micro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::80f2565ed6f623c41a9988f6e7a066ea
https://doi.org/10.1111/j.1151-2916.1998.tb02635.x
https://doi.org/10.1111/j.1151-2916.1998.tb02635.x
Autor:
Seung Kun Lee, Brian R. Lawn
Publikováno v:
Journal of the American Ceramic Society. 81:997-1003
In this Part II of a two-part study of the role of microstructure on Hertzian contact damage in silicon nitride we determine strength degradation properties. As previously, three microstructures are investigated: fine (F), medium (M) and coarse (C),
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4f78552fda4ae237d3e15e027a5e52c8
https://doi.org/10.1111/j.1151-2916.1998.tb02437.x
https://doi.org/10.1111/j.1151-2916.1998.tb02437.x
Role of Microstructure in Hertzian Contact Damage in Silicon Nitride: I, Mechanical Characterization
Publikováno v:
Journal of the American Ceramic Society. 80:2367-2381
In this Part I of a two-part study of Hertzian indentation in silicon nitride we characterize irreversible contact damage as a function of microstructure. Three controlled silicon nitride microstructures are examined, representing a progression towar
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::976e29c15c5dd0d479e1ba7e946c5a6b
https://doi.org/10.1111/j.1151-2916.1997.tb03129.x
https://doi.org/10.1111/j.1151-2916.1997.tb03129.x
Publikováno v:
Journal of the American Ceramic Society. 81:2061-2070
The role of starting powder in the resistance of silicon nitride (Si 3 N 4 ) ceramics to strength-impairing contact damage is studied. Si 3 N 4 materials are prepared from three starting powders, at selectively increasing hot-pressing temperatures to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::75eaf94c9e168c26397efbd3c1df1ee3
https://doi.org/10.1111/j.1151-2916.1998.tb02588.x
https://doi.org/10.1111/j.1151-2916.1998.tb02588.x
Autor:
Seung Kun Lee, Brian R. Lawn
Publikováno v:
Journal of the American Ceramic Society. 82:1281-1288
A study of contact fatigue in silicon nitride is reported. The contacts are made using WC spheres, principally in cyclic but also in static loading, and mainly in air but also in nitrogen and water. Damage patterns are examined in three silicon nitri
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1e9a9330734dc3acb568a7ee489e7429
https://doi.org/10.1111/j.1151-2916.1999.tb01908.x
https://doi.org/10.1111/j.1151-2916.1999.tb01908.x
Publikováno v:
Journal of the American Ceramic Society. 83:1428-1432
Scratch damage modes in zirconia-based ceramics-Mg-PSZ, Y-TZP, and Ce-TZP-are investigated. Precursor indentation tests with a tungsten carbide sphere foreshadow the nature of damage: in Mg-PSZ, extensive (quasi-)plastic deformation in the region out
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::926ae261dc76993eeb61a9503bcb538e
https://doi.org/10.1111/j.1151-2916.2000.tb01406.x
https://doi.org/10.1111/j.1151-2916.2000.tb01406.x