CATALYTIC EFFECT OF FORMIC ACID UPON AMORPHOUS CHROMIUM ELECTRODEPOSITION

来源期刊：中国有色金属学报(英文版)1995年第4期

论文作者：Wang Xianyou Jiang Hanying Guo Bingkun

文章页码：49 - 52

Key words：amorphous materials; electrodeposition; catalysis; formic acid; chromium

Abstract: The characteristics and properties of amorphous chromium deposited from sulphuric acid-catalyzed chromic acidic solution containing formic acid have been investigated. Both bright and satisfactory amorphous chromium deposits have been obtained.The polarization curves on copper and vitreous carbon electrode and current efficiency of the electrolyte have also been examined.The results showed that formic acid was an effective catalyst for electrodeposition of amorphous chromium, which can inhibit reduction of Cr(Ⅵ) to Cr(Ⅲ) and hydrogen evolution,and increase cathodic current efficiency of amorphous chromium deposition.