Abstract
A nano-thin TiO2 layer was uniformly coated on spherical Ni particles for applications in multilayer ceramic capacitors via a controlled hydrolysis process using TiCl4, (C2H5)2NH (diethylamine, DEA), and C4H9OH as Ti-source, gradual (OH)- former, and solvent, respectively. At the constant [DEA]/[TiCl4] = 10.6, the Ti-hydroxide could be coated uniformly using the dilute source solution ([TiCl4] ≤ 0.2 M) while the Ti-hydroxide powder in a separated form was frequently observed at [TiCl4] ≥ 0.4 M. A uniform coating was attained at the slower precipitation, and the kinetics of precipitation was controlled by tuning the trace amount of water in the solution. The TiO2-coating not only prevented Ni oxidation but also retarded the sintering between the Ni particles to a large extent.
| Original language | English |
|---|---|
| Pages (from-to) | 1669-1675 |
| Number of pages | 7 |
| Journal | Journal of Materials Research |
| Volume | 19 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - 2004 Jun 1 |
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ASJC Scopus subject areas
- Materials Science(all)
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Coating of TiO2 nanolayer on spherical Ni particles using a novel sol-gel route. / Lee, Jae Young; Hong, Seong Hyeon; Lee, Jong Heun; Lee, Yong Kyun; Choi, Jae Young.
In: Journal of Materials Research, Vol. 19, No. 6, 01.06.2004, p. 1669-1675.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Coating of TiO2 nanolayer on spherical Ni particles using a novel sol-gel route
AU - Lee, Jae Young
AU - Hong, Seong Hyeon
AU - Lee, Jong Heun
AU - Lee, Yong Kyun
AU - Choi, Jae Young
PY - 2004/6/1
Y1 - 2004/6/1
N2 - A nano-thin TiO2 layer was uniformly coated on spherical Ni particles for applications in multilayer ceramic capacitors via a controlled hydrolysis process using TiCl4, (C2H5)2NH (diethylamine, DEA), and C4H9OH as Ti-source, gradual (OH)- former, and solvent, respectively. At the constant [DEA]/[TiCl4] = 10.6, the Ti-hydroxide could be coated uniformly using the dilute source solution ([TiCl4] ≤ 0.2 M) while the Ti-hydroxide powder in a separated form was frequently observed at [TiCl4] ≥ 0.4 M. A uniform coating was attained at the slower precipitation, and the kinetics of precipitation was controlled by tuning the trace amount of water in the solution. The TiO2-coating not only prevented Ni oxidation but also retarded the sintering between the Ni particles to a large extent.
AB - A nano-thin TiO2 layer was uniformly coated on spherical Ni particles for applications in multilayer ceramic capacitors via a controlled hydrolysis process using TiCl4, (C2H5)2NH (diethylamine, DEA), and C4H9OH as Ti-source, gradual (OH)- former, and solvent, respectively. At the constant [DEA]/[TiCl4] = 10.6, the Ti-hydroxide could be coated uniformly using the dilute source solution ([TiCl4] ≤ 0.2 M) while the Ti-hydroxide powder in a separated form was frequently observed at [TiCl4] ≥ 0.4 M. A uniform coating was attained at the slower precipitation, and the kinetics of precipitation was controlled by tuning the trace amount of water in the solution. The TiO2-coating not only prevented Ni oxidation but also retarded the sintering between the Ni particles to a large extent.
UR - http://www.scopus.com/inward/record.url?scp=3142704440&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=3142704440&partnerID=8YFLogxK
U2 - 10.1557/JMR.2004.0213
DO - 10.1557/JMR.2004.0213
M3 - Article
AN - SCOPUS:3142704440
VL - 19
SP - 1669
EP - 1675
JO - Journal of Materials Research
JF - Journal of Materials Research
SN - 0884-2914
IS - 6
ER -