电镀与涂饰
電鍍與塗飾
전도여도식
ELECTROPLATING & FINISHING
2014年
5期
197-200
,共4页
铝%镍%碳纳米管%复合镀层%电沉积%耐蚀性
鋁%鎳%碳納米管%複閤鍍層%電沉積%耐蝕性
려%얼%탄납미관%복합도층%전침적%내식성
aluminum%nickel%carbon nanotube%composite coating%electrodeposition%corrosion resistance
采用电沉积法在铝基体上制备了镍-碳纳米管复合镀层，探讨了镀液中碳纳米管含量、电流密度、搅拌速率、温度、电镀时间等因素对镀层碳纳米管含量和厚度的影响，得出制备镍-碳纳米管复合镀层的适宜工艺条件为：碳纳米管质量浓度4 g/L，电流密度8 A/dm2，搅拌速率440 r/min，温度40°C，沉积时间40 min。采用扫描电镜和X射线衍射仪对镀层表面形貌和成分进行分析，通过电化学测试比较了不同镀层在不同腐蚀介质中的耐腐蚀性。与纯镍镀层相比，镍-碳纳米管复合镀层的晶粒尺寸更小，表面更粗糙，耐腐蚀性更好。
採用電沉積法在鋁基體上製備瞭鎳-碳納米管複閤鍍層，探討瞭鍍液中碳納米管含量、電流密度、攪拌速率、溫度、電鍍時間等因素對鍍層碳納米管含量和厚度的影響，得齣製備鎳-碳納米管複閤鍍層的適宜工藝條件為：碳納米管質量濃度4 g/L，電流密度8 A/dm2，攪拌速率440 r/min，溫度40°C，沉積時間40 min。採用掃描電鏡和X射線衍射儀對鍍層錶麵形貌和成分進行分析，通過電化學測試比較瞭不同鍍層在不同腐蝕介質中的耐腐蝕性。與純鎳鍍層相比，鎳-碳納米管複閤鍍層的晶粒呎吋更小，錶麵更粗糙，耐腐蝕性更好。
채용전침적법재려기체상제비료얼-탄납미관복합도층，탐토료도액중탄납미관함량、전류밀도、교반속솔、온도、전도시간등인소대도층탄납미관함량화후도적영향，득출제비얼-탄납미관복합도층적괄의공예조건위：탄납미관질량농도4 g/L，전류밀도8 A/dm2，교반속솔440 r/min，온도40°C，침적시간40 min。채용소묘전경화X사선연사의대도층표면형모화성분진행분석，통과전화학측시비교료불동도층재불동부식개질중적내부식성。여순얼도층상비，얼-탄납미관복합도층적정립척촌경소，표면경조조，내부식성경호。
A nickel–carbon nanotube composite coating was electrodeposited on aluminum substrate. The effects of carbon nanotube concentration in bath, current density, stirring rate, temperature, and deposition time on carbon nanotube content and thickness of the composite coating were studied. The suitable process conditions for preparation of nickel–carbon nanotube composite are as follows:carbon nanotube 4 g/L, current density 8 A/dm2, stirring rate 440 r/min, temperature 40 °C, and deposition time 40 min. The surface morphology and composition of the coating were characterized by scanning electronic microscope and X-ray diffractometer. The corrosion resistance of the coating in different corrosive media were examined by electrochemical test. The results showed that the nickel–nanotube composite coating has smaller grain size, rougher surface, and better corrosion resistance than a pure nickel coating.
