Abstract

The temperature conditions of sintering of corundum ceramics affect the rate of subsequent metallization and the catalytic activity of metallized high-porosity cellular material. The process of chemical silvering of the material under study from a solution containing (g L^–1): 2 silver nitrate, 54 glucose, and 1,5-oxyethylidene diphosphonic acid, as complexing ligand, was developed. The influence of the velocity of electrolyte flow on the uniformity of metal distribution within the high-porosity cellular material was determined. A technology was developed for the surface pretreatment of corundum ceramics before metallization, including degreasing with white spirit, etching in a mixture of hydrofluoric and sulfuric acids, and palladium activation, which makes it possible to obtain continuous, fine-crystalline coatings with good adhesion and high catalytic activity.

中文翻译：

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高孔隙度蜂窝陶瓷材料的镀银

摘要

刚玉陶瓷的烧结温度条件影响随后的金属化速率和金属化的高孔隙度多孔材料的催化活性。从含（g L ^–1）溶液中对所研究材料进行化学镀银的过程）：开发了2个硝酸银，54个葡萄糖和1,5-氧亚乙二膦酸作为络合配体。确定了电解液流速对高孔隙率多孔材料中金属分布均匀性的影响。开发了一种技术，用于在金属化之前对刚玉陶瓷进行表面预处理，包括用白酒精进行脱脂，在氢氟酸和硫酸的混合物中进行蚀刻以及钯活化，这使得可以获得具有良好附着力和抗拉强度的连续，微晶涂层成为可能。高催化活性。