ELECTROCHEMICAL REDUCTION OF THERMALLY PREPARED OXIDES OF IRON AND IRON CHROMIUM-ALLOYS STUDIED BY INSITU RAMAN-SPECTROSCOPY

被引：16

作者：

THANOS, ICG ^{[1
]}

机构：

[1] CASE WESTERN RESERVE UNIV HOSP,CASE CTR ELECTROCHEM SCI,CLEVELAND,OH 44106

来源：

ELECTROCHIMICA ACTA | 1986年 / 31卷 / 12期

关键词：

ELECTROCHEMISTRY - IRON CHROMIUM ALLOYS - Oxidation - IRON COMPOUNDS - Spectroscopic Analysis - OXIDES - Reduction - SPECTROSCOPY; RAMAN; -; Applications;

D O I：

10.1016/0013-4686(86)87079-7

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Pure Fe and Fe/Cr alloys (3% and 12% Cr) were oxidized at 250-260 degree C and subsequently electrochemically reduced in borate buffer, pH 8. 4. The reduction was followed by in situ Raman spectroscopy as well as chronopotentiometric and chronoamperometric measurements. At several time intervals ex situ Raman control investigations and ESCA analyses were undertaken. Although at minus 0. 7 V vs sce partial reduction of the oxide film was observed, alpha -Fe//2O//3 remained unchanged and reduced at minus 0. 9 V. A. mixture of spinel structured oxide, possibly Fe//3O//4, and a ferrous deposit were observed when the oxide film was galvanostatically reduced at 100 mu A cm** minus //2; after prolonged reduction the bare metal resulted.

引用

页码：1585 / 1595

页数：11