Electrochemical Passivation for Sm2Fe17N3 Magnetic Powders in Non-Aqueous Solvents

Mariko Kadowaki, Izumi Muto, Yu Sugawara, Takashi Ishikawa, Yukinobu Yoneyama, Nobuyoshi Hara

研究成果: Article査読

1 被引用数 (Scopus)

抄録

Potentiodynamic polarization measurements for Sm2Fe17N3 magnetic powders in organic solvents with H3PO4 were performed to determine which additives promote passivation in the ball-milling process and improve the coercivity of the ball-milled powders at high temperatures. Surface films that contained FePO4 formed on the Sm2Fe17N3 powders in the solvents with H3PO4 and inhibited the dissolution reaction during anodic polarization. It would appear that the FePO4-containing surface film acts as a barrier against oxidation at high temperatures. It was demonstrated that the addition of either PO(OCH3)3 or HNO3 to an isopropyl alcohol solution in the ball-milling process suppressed the decrease in coercivity above 500 K.

本文言語English
ページ(範囲)386-396
ページ数11
ジャーナルElectrochimica Acta
224
DOI
出版ステータスPublished - 2017 1 10

ASJC Scopus subject areas

  • 化学工学(全般)
  • 電気化学

フィンガープリント

「Electrochemical Passivation for Sm<sub>2</sub>Fe<sub>17</sub>N<sub>3</sub> Magnetic Powders in Non-Aqueous Solvents」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル