Silvering of High-Porosity Cellular Ceramic Materials

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...

Full description

Saved in:
Bibliographic Details
Published inRussian journal of applied chemistry Vol. 93; no. 10; pp. 1518 - 1524
Main Authors Asnis, N. A., Vasilenko, O. A., Gasparyan, M. D., Speshilov, I. O., Vagramyan, T. A., Aleshina, V. Kh
Format Journal Article
LanguageEnglish
Published Moscow Pleiades Publishing 01.10.2020
Subjects
Chemistry
Chemistry and Materials Science
Chemistry/Food Science
Industrial Chemistry/Chemical Engineering
Inorganic Synthesis and Industrial Inorganic Chemistry
chemical metallization
high-porosity cellular material
catalytic activity
silvering
Online AccessGet full text

Cover

More Information
Summary: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.
ISSN:1070-4272
1608-3296
DOI:10.1134/S1070427220100055