CAJ | 학술논문

采用碱洗除去铝箔表面的富铅层，在其表面沉积出高度弥散的锡晶核，通过扫描电镜观察铝箔表面沉积锡晶核的分布，并对铝箔腐蚀后的表面形貌以及对腐蚀孔孔径大小进行统计。结合极化曲线测量铝箔的腐蚀电位，研究电沉积弥散锡晶核对高压阳极铝箔电解腐蚀特性的影响。结果表明：沉积锡晶核的电流密度越大，铝箔表面得到的锡晶核面密度越高，晶核越细小；弥散的锡晶核能够和铝基体组成腐蚀微电池，有效地引导铝箔腐蚀发孔，提高铝箔发孔的均匀性，从而提高铝箔的比电容；相对于表面富铅的铝箔，电沉积弥散锡晶核的铝箔表面微电池数量显著下降，使得腐蚀电位提高，铝箔表面未沉积锡晶核处表面活性低，从而导致铝箔的腐蚀减薄减少。
채용감세제거려박표면적부연층，재기표면침적출고도미산적석정핵，통과소묘전경관찰려박표면침적석정핵적분포，병대려박부식후적표면형모이급대부식공공경대소진행통계。결합겁화곡선측량려박적부식전위，연구전침적미산석정핵대고압양겁려박전해부식특성적영향。결과표명：침적석정핵적전류밀도월대，려박표면득도적석정핵면밀도월고，정핵월세소；미산적석정핵능구화려기체조성부식미전지，유효지인도려박부식발공，제고려박발공적균균성，종이제고려박적비전용；상대우표면부연적려박，전침적미산석정핵적려박표면미전지수량현저하강，사득부식전위제고，려박표면미침적석정핵처표면활성저，종이도치려박적부식감박감소。
The trace amount of lead at the surface of Al foils was removed by alkaline washing, and then, the tin nuclei were electrodeposited on the surface. The surface morphologies of the Al foils electrodeposited tin nuclei were observed by scanning electron microscopy. The size distribution of pits was calculated and the corrosion potential was analyzed by polarization curve. The influence of electrodepositing tin nuclei on the etching ability was studied. The results show that the surface density of the tin nuclei increases with the current density increase, and accompany with the volume of nuclei decreasing. The tin nuclei can form a lot of micro-batteries with Al foils so as to effectively initiate pitting, which promote the uniform distribution of pits and increase the specific capacitance of etched Al foils. Compared with lead-riched Al foils at the surface, the numbers of micro-batteries of the Al foils electrodeposited tin nuclei are far less than that of the lead-riched Al foils at the surface, which can decrease the corrosion thickness of the Al foils.