COBALT-FREE CHEMICAL CONVERSION COATING TREATMENT SOLUTION AND METHOD FOR TREATING CHEMICAL CONVERSION COATING USING THE SAME

To provide a cobalt-free chemical conversion coating treatment solution capable of forming a chemical conversion coating excellent in corrosion resistance and scratch resistance and having excellent solution stability, and a method for treating the chemical conversion coating using the same.SOLUTION...

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Bibliographische Detailangaben
Hauptverfasser:	TAMURA NAOYA, KANEDA HIROYUKI, TAKASHINO ATSUSHI
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	CHEMICAL SURFACE TREATMENT CHEMISTRY COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING MATERIAL WITH METALLIC MATERIAL COATING METALLIC MATERIAL DIFFUSION TREATMENT OF METALLIC MATERIAL INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL METALLURGY SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION
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Beschreibung
Zusammenfassung:	To provide a cobalt-free chemical conversion coating treatment solution capable of forming a chemical conversion coating excellent in corrosion resistance and scratch resistance and having excellent solution stability, and a method for treating the chemical conversion coating using the same.SOLUTION: A cobalt-free chemical conversion coating treatment solution includes (A) trivalent chromium ions, (B) colloidal silica, (C) two kinds of carboxylic compounds described in any one of the following (1)-(6), (1) an oxalic acid compound and a malonic acid compound, (2) an oxalic acid compound and a tartaric acid compound, (3) an oxalic acid compound and a malic acid compound, (4) an oxalic acid compound and an acetic acid compound, (5) a tartaric acid compound and a citric acid compound, (6) a tartaric acid compound and a malonic acid compound, (D) titanium compound and (E) one or two or more kinds of a groups consisting of sulfate ions, nitrate ions and chloride ions.SELECTED DRAWING: None 【課題】耐食性及び耐傷性に優れた化成皮膜を形成することができ、良好な液安定性を有するコバルトフリーの化成皮膜処理液、及び、それを用いた化成皮膜処理方法を提供する。【解決手段】（Ａ）三価クロムイオン、（Ｂ）コロイダルシリカ、（Ｃ）下記（１）～（６）のいずれか一つに記載の二種類のカルボン酸化合物、（１）シュウ酸化合物とマロン酸化合物、（２）シュウ酸化合物と酒石酸化合物、（３）シュウ酸化合物とリンゴ酸化合物、（４）シュウ酸化合物と酢酸化合物、（５）酒石酸化合物とクエン酸化合物、（６）酒石酸化合物とマロン酸化合物、（Ｄ）チタン化合物、及び、（Ｅ）硫酸イオン、硝酸イオン及び塩化物イオンからなる群のうちの一種または二種以上を含有するコバルトフリーの化成皮膜処理液。【選択図】なし