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交番電流電解法による化学発色ステンレス「ルミナカラー」の開発

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川崎製鉄技報

KAWASAKI STEEL GIHO Vol.21 (1989) No.1

交番電流電解法による化学発色ステンレス「ルミナカラー」の開発

Development of Colored Stainless Steel "LUMINA COLOR" by Using Alternating Current Electrolyzing Method

曽根 雄二(Yuji Sone) 石井 美佐子(Misako Ishii) 吉岡 啓一(Keiichi Yoshioka) 橋 本 修(Osamu Hashimoto) 倉橋 速生(Hayao Kurahashi) 広野 種生(Taneo Hirono) 要旨 : ステンレス鋼板の発色法として,従来のインコ法と全く異なる交番電流電解法を考案し, ルミナカラーを開発した。ルミナカラーの特徴は次のとおりである。(1)ルミナカラーは, 交番電流電解法により硫酸-クロム酸浴中で,着色と硬膜を1液1工程で行うことが特徴で 従来のインコ法の浸漬着色,硬膜処理という2液2工程とは異なる。(2)インコ法のブラッ ク発色は別の専用溶液が必要であるが,交番法はブラック,ブロンズ,ブルー,ゴールド などの色調を単一の溶液で発色できる。(3)ルミナカラーは耐食性に優れているので内装材 のみならず外装材にも適する。 Synopsis :

A unique coloring process named the "slternating current electrolyzing method" has been developed, which is entirely different from the conventional, so called "INCO method" and has succeeded in producing colored stainless steel, "LUMINA COLOR". Features of LUMINA COLOR are as follows: (1) the INCO method used a two-solution and two-step process, i.e., coloring in a sulfuric acid-chromate solution and colored-oxide-film hardening by the cathodic electrolysis, whereas LUMINA COLOR is produced by a one-solution and one-step process using alternating current electrolyzing. (2) Alternating current electrolyzing method can produce stainless steel with several colors such as black, bronze, blue or gold only in a single solution, while coloring in black by the INCO method requires another specific solution. (3) Being superior in corrosion resistance, LUMINA COLOR is suitable for exterior panels in addition to interior decorative materials.

(c)JFE Steel Corporation, 2003

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