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Proton-assisted low-temperature sintering of Cu fine particles stabilized by a proton-initiating degradable polymer

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Title: Proton-assisted low-temperature sintering of Cu fine particles stabilized by a proton-initiating degradable polymer
Authors: Matsubara, Masaki Browse this author
Yonezawa, Tetsu Browse this author →KAKEN DB
Minoshima, Takato Browse this author
Tsukamoto, Hiroki Browse this author
Yong, Yingqiong Browse this author
Ishida, Yohei Browse this author
Mai Thanh Nguyen Browse this author
Tanaka, Hiroki Browse this author
Okamoto, Kazuki Browse this author
Osaka, Takuya Browse this author
Issue Date: 2015
Publisher: Royal Society of Chemistry
Journal Title: RSC advances
Volume: 5
Issue: 124
Start Page: 102904
End Page: 102910
Publisher DOI: 10.1039/c5ra21402e
Abstract: Metallic copper fine particles were prepared by chemical reduction of CuO in the presence of thermally degradable poly-1,4-butanediol-divinylether (BDVE). Because a BDVE thin layer formed on the particle surfaces, the obtained copper particles were stable and did not undergo obvious oxidation under ambient conditions. The ether groups of BDVE were hydrolyzed with protons, and this generated small fragment molecules. The BDVE-stabilized copper fine particles and their pastes can be therefore sintered at 150 degrees C in the presence of protons. Electro-conductive films with a relatively low resistivity of 8.5 x 10(-5) Omega cm were obtained on a alumina substrate in the presence of formic acid, and hot pressed conductive pellets with a resistivity of 2.9 x 10(-5) Omega cm were also obtained without any pre-oxidative annealing in the presence of proton generator molecules at very low temperatures. The hot pressed pellets show a high anti-oxidative ability and their corrosion tests revealed their good anti-corrosion property.
Type: article
Appears in Collections:工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 米澤 徹

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