(1. 吉林大學(xué) 材料科學(xué)與工程學(xué)院 教育部汽車(chē)材料重點(diǎn)實(shí)驗(yàn)室，長(zhǎng)春 130025；
2. 吉林科爾物流涂裝設(shè)備有限公司，長(zhǎng)春 130000)
摘 要: 研究電鑄鎳層的微觀結(jié)構(gòu)和表面氧化膜的形成、硫酸酸蝕去除氧化膜的過(guò)程及其對(duì)非連續(xù)電鑄后鎳層結(jié)合致密度的影響。利用X射線衍射儀(XRD)和掃描電鏡(SEM)對(duì)電鑄鎳層的微觀結(jié)構(gòu)進(jìn)行表征，利用能譜儀(EDS)和高精度電子天平研究鎳層表面氧元素含量，采用掃描電鏡觀測(cè)二次電鑄后鎳層間結(jié)合致密度。結(jié)果表明：電鑄鎳層具有明顯的(100)晶面擇優(yōu)取向，120 min后，鎳層表面基本氧化完全；氧化膜隨著硫酸酸蝕時(shí)間的增加而不斷損失，10%質(zhì)量分?jǐn)?shù)的硫酸酸蝕60 min可以除去氧化完全的鎳層表面的氧化膜，非連續(xù)電鑄所得雙層鎳層之間結(jié)合致密。
關(guān)鍵字: 電鑄鎳；氧化膜；酸蝕；非連續(xù)電鑄
（1. Key Laboratory of Automobile Materials of Ministry of Education, Department of Materials Science & Engineering, Jilin University, Changchun 130025, China;
2. Jilin Core Technology Co. LTD, Changchun 130000, China）
Abstract:The formation of oxide film on the nickel surface and the effect of sulfuric acid erosion on the remain of the oxide film and the binding densification between two electroformed nickel layers were investigated. The microstructure of electroformed nickel layer was characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM). The oxygen content on the surface of the nickel layer was characterized by energy dispersive spectroscopy (EDS) and high precision electronic scale, the binding density between two electroformed nickel layers was observed by SEM. The results show that the electroformed nickel crystal orientation prefers (100), the electroformed nickel is substantially oxidized after 120 min. The oxide film decreases with the increase of the etching time, and disappears completely after etched in 10% (mass fraction) sulfuric acid for 60 min, and the two nickel layers combine densely.
Key words: electroformed nickel; oxide film; etching; discontinuous electroforming
