Coating of TiO2 nanolayer on spherical Ni particles using a novel sol-gel route

Jae Young Lee; Seong Hyeon Hong; Jong Heun Lee; Yong Kyun Lee; Jae Young Choi

doi:10.1557/JMR.2004.0213

Coating of TiO₂ nanolayer on spherical Ni particles using a novel sol-gel route

Jae Young Lee, Seong Hyeon Hong, Jong Heun Lee, Yong Kyun Lee, Jae Young Choi

Research output: Contribution to journal › Article › peer-review

21 Citations (Scopus)

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	https://doi.org/10.1557/JMR.2004.0213
Publication status	Published - 2004 Jun

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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title = "Coating of TiO2 nanolayer on spherical Ni particles using a novel sol-gel route",

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.",

author = "Lee, {Jae Young} and Hong, {Seong Hyeon} and Lee, {Jong Heun} and Lee, {Yong Kyun} and Choi, {Jae Young}",

note = "Funding Information: This work was supported by Samsung Advanced Institute of Technology. J.-H. Lee was supported by the Korea University Grant (No. K0230000).",

year = "2004",

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doi = "10.1557/JMR.2004.0213",

language = "English",

volume = "19",

pages = "1669--1675",

journal = "Journal of Materials Research",

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publisher = "Materials Research Society",

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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

N1 - Funding Information: This work was supported by Samsung Advanced Institute of Technology. J.-H. Lee was supported by the Korea University Grant (No. K0230000).

PY - 2004/6

Y1 - 2004/6

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.

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DO - 10.1557/JMR.2004.0213

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JO - Journal of Materials Research

JF - Journal of Materials Research

SN - 0884-2914

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ER -

Coating of TiO₂ nanolayer on spherical Ni particles using a novel sol-gel route

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