Zobrazeno 1 - 10
of 70
pro vyhledávání: '"Choon-W. Nahm"'
Autor:
Choon‑W. Nahm
Publikováno v:
Journal of the Korean Ceramic Society. 57:65-72
This study elucidates the effect of sintering temperature on the nonlinearity and surge degradation characteristics of Mn3O4/Nb2O5/Er2O3–doped ZnO–V2O5-based varistors. With increasing sintering temperature, the average grain size increased from
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a3ba4c443ca6b6ea48412a841fbb920e
https://doi.org/10.1007/s43207-019-00009-9
https://doi.org/10.1007/s43207-019-00009-9
Autor:
Choon-W. Nahm
Publikováno v:
Journal of the Korean Ceramic Society. 56:84-90
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::62689186a436619f6b48faf787f3ab36
https://doi.org/10.4191/kcers.2019.56.1.11
https://doi.org/10.4191/kcers.2019.56.1.11
Autor:
Choon-W. Nahm
Publikováno v:
Journal of the Korean Ceramic Society. 55:504-509
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b342cc32f2552d3a793bec8263b9075d
https://doi.org/10.4191/kcers.2018.55.5.10
https://doi.org/10.4191/kcers.2018.55.5.10
Autor:
Choon-W. Nahm
Publikováno v:
Transactions on Electrical and Electronic Materials. 19:330-336
A stress behavior of non-ohmic properties for ZPCCD (ZnO–Pr1.83–CoO–Cr2O3–Dy2O3) varistors was investigated for different amounts of the doped Er2O3. With the amount of the doped Er2O3 increased, the density of the sintered pellet decreased f
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::eaebedc0ac8f74c0c75d9224010834c8
https://doi.org/10.1007/s42341-018-0060-6
https://doi.org/10.1007/s42341-018-0060-6
Autor:
Choon-W. Nahm
Publikováno v:
Journal of Materials Science: Materials in Electronics. 29:2958-2965
This paper deals with a major effect of ytterbium on microstructure, electrical and dielectric properties, and aging characteristics of ZVM (ZnO–V2O5–Mn3O4) system. With the amount of the ytterbium increased, the average grain size decreased from
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0504442bbe19027db9b292f11ddeed5c
https://doi.org/10.1007/s10854-017-8226-2
https://doi.org/10.1007/s10854-017-8226-2
Autor:
Choon-W. Nahm
Publikováno v:
Journal of Materials Science: Materials in Electronics. 28:17063-17069
ZnO–V2O5–Mn3O4–Bi2O3 (ZVMB) varistor ceramics were sintered at a low temperature range of 800–875 °C, and the microstructure, electrical properties, dielectric characteristics, and DC-accelerated aging behavior were systematically investigat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bc3c5ec736f5d7c86c520aabe16c7834
https://doi.org/10.1007/s10854-017-7632-9
https://doi.org/10.1007/s10854-017-7632-9
Autor:
Choon-W. Nahm
Publikováno v:
Journal of Materials Science: Materials in Electronics. 28:903-908
In this study, the effect of Bi2O3 doping on microstructure and electrical properties of ZnO–V2O5–Mn3O4 semiconducting ceramics was investigated through the sintering temperature as low as 825 °C. Analysis of the microstructure revealed that ZnO
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9d4227ae28adf2a189b74083200c81e1
https://doi.org/10.1007/s10854-016-5605-z
https://doi.org/10.1007/s10854-016-5605-z
Autor:
Choon-W. Nahm
Publikováno v:
Journal of Materials Science: Materials in Electronics. 27:9520-9525
This study analyzed the effects of sintering temperature on the microstructure and electrical properties of ZVMND (ZnO–V2O5–MnO2–Nb2O5–Dy2O3) ceramic semiconductors. The average grain size increased from 4.0 to 11.5 μm with the increase of s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e5522f6ee190659030366d038d332624
https://doi.org/10.1007/s10854-016-5003-6
https://doi.org/10.1007/s10854-016-5003-6
Autor:
Choon-W. Nahm
Publikováno v:
Microelectronics Reliability. 55:2299-2305
We introduced the varistor having more powerful surge suppression capability. This research focuses on the effect of sintering time on electrical properties and pulse current degradation of Pr/Co/Cr/Y/Mg co-doped zinc oxide varistors for surge suppre
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b8b2c04ec1f4fa6fe0bace6ae46fb892
https://doi.org/10.1016/j.microrel.2015.08.001
https://doi.org/10.1016/j.microrel.2015.08.001
Autor:
Choon-W. Nahm
Publikováno v:
Journal of Materials Science: Materials in Electronics. 26:10217-10224
The effect of Dy2O3 doping on the microstructure, electrical and dielectric properties of ZnO–V2O5-based varistor ceramics was systematically investigated. The average grain size decreased from 5.5 to 5.2 μm to a small extent until the amount of t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3c69bdfe0f99bc7f9420f51be3871d30
https://doi.org/10.1007/s10854-015-3874-6
https://doi.org/10.1007/s10854-015-3874-6