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Title:
TREATMENT LIQUID FOR FORMING PROTECTIVE FILM FOR STEEL MEMBER HAVING NITROGEN COMPOUND LAYER, AND COMPOUND LAYER PROTECTIVE FILM
Document Type and Number:
WIPO Patent Application WO/2011/013361
Kind Code:
A1
Abstract:
Disclosed is a means for preventing oxidation of a compound layer by high-frequency hardening, said compound layer having been formed on the surface of a steel material by nitriding. Specifically disclosed is a treatment liquid for forming a compound layer protective film, which is a nonaqueous treatment liquid for forming a protective film on a nitride layer for the purpose of protecting the compound, said nitride layer having been formed on a steel material after nitriding. The treatment liquid for forming a compound layer protective film is characterized by containing at least one molten metal alkoxide, metal acetylacetonate and/or metal carboxylate of a metal selected from the metal group consisting of Si, Ti, Zr, Hf, V, Ta, Ca, Ce, Sc, Nb, Cr, W, Al, Sr, Zn, Mg and Mo.

Inventors:
KONISHI, Tomoyoshi (15-1, Nihonbashi 1-chome, Chuo-k, Tokyo 27, 〒1030027, JP)
小西知義 (〒27 東京都中央区日本橋一丁目15番1号日本パーカライジング株式会社内 Tokyo, 〒1030027, JP)
IKEDA, Yoshihiro (15-1, Nihonbashi 1-chome, Chuo-k, Tokyo 27, 〒1030027, JP)
Application Number:
JP2010/004781
Publication Date:
February 03, 2011
Filing Date:
July 28, 2010
Export Citation:
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Assignee:
NIHON PARKERIZING CO., LTD. (15-1, Nihonbashi 1-chome Chuo-k, Tokyo 27, 〒1030027, JP)
日本パーカライジング株式会社 (〒27 東京都中央区日本橋一丁目15番1号 Tokyo, 〒1030027, JP)
KONISHI, Tomoyoshi (15-1, Nihonbashi 1-chome, Chuo-k, Tokyo 27, 〒1030027, JP)
小西知義 (〒27 東京都中央区日本橋一丁目15番1号日本パーカライジング株式会社内 Tokyo, 〒1030027, JP)
International Classes:
C23C28/00; C21D1/06; C21D1/10; C21D1/70; C21D6/00; C23C8/26; C23C8/32; C23C8/38; C23C8/50; C23C26/00
Domestic Patent References:
1996-04-11
Foreign References:
JPS5183846A1976-07-22
Attorney, Agent or Firm:
ITOH, Atsushi (Horidome First Bldg. 8F, 1-11-10Nihonbashi Horidome-cho, Chuo-k, Tokyo 12, 〒1030012, JP)
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