Silvering of High-Porosity Cellular Ceramic Materials

被引：1

作者：

Asnis, N. A. ^{[1
]}

Vasilenko, O. A. ^{[1
]}

Gasparyan, M. D. ^{[1
]}

Speshilov, I. O. ^{[2
]}

Vagramyan, T. A. ^{[1
]}

Aleshina, V. Kh ^{[1
]}

机构：

[1] Mendeleev Univ Chem Technol, Moscow 125047, Russia

[2] Joint Stock Co, Glushko Energomash Res & Prod Assoc, Chimki 141400, Moscow Oblast, Russia

来源：

RUSSIAN JOURNAL OF APPLIED CHEMISTRY | 2020年 / 93卷 / 10期

关键词：

chemical metallization; silvering; high-porosity cellular material; catalytic activity;

D O I：

10.1134/S1070427220100055

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

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.

引用

页码：1518 / 1524

页数：7

共 8 条

[1]

[Anonymous], CN Patent, Patent No. [102481549B., 102481549]

[2]

Antsiferov VN, 1997, RUSS J APPL CHEM+, V70, P104

[3] ZrO2 - Al2O3 CERAMIC WITH EUTECTIC ADDITIVES [J].