在铁铬铝合金丝网上,以电泳沉积制备了铝颗粒涂层,覆铝改性后的金属丝网是制备丝网整体催化剂支撑体的合适材料.考察了乙醇、丁酮两类悬浮液体系中各操作参数对电泳沉积的影响,获得了制备均匀涂层的适宜条件,即:在乙醇体系中,聚乙烯吡咯烷酮0.2%(质量分数),AlCl32.5 mmol/L,铝粉1%(质量分数),电场强度30 V/cm,沉积时间10 min;在丁酮体系中,硝化纤维0.06%(质量分数),正丁胺10%(体积分数),铝粉0.2%(质量分数),电场强度50 V/cm,沉积时间30 min.通过氮气保护气氛下的热处理,使铝颗粒与合金丝以及涂层中铝颗粒之间结合牢固.
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