AN IMPEDANCE STUDY OF TITANIUM PASSIVATION FILMS IN SULFURIC-ACID MEDIA

被引：0

作者：

DAFONSECA, C

FATY, S

FERREIRA, MG

BELO, MD

机构：

[1] INST SUPER TECN,LISBON 1,PORTUGAL

[2] UNIV DAKAR,DAKAR,SENEGAMBIA

来源：

COMPTES RENDUS DE L ACADEMIE DES SCIENCES SERIE II | 1993年 / 316卷 / 12期

关键词：

D O I：

暂无

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Capacitance-potential measurements by a.c. impedance methods have shown that in the potential range 0.5 to 0.7 V the titanium passive films formed between 0.2 and 2 V show linear Mott-Schottky plots with frequency dependent slopes. The study develops a theoretical approach to this fact which takes into account of both the dielectric relaxation phenomena and allows the determination of flat band potentials, the Helmholtz capacitance and the donor density for each film.

引用

页码：1703 / 1709

页数：7

共 5 条

[1]

DIPAOLA A, 1989, ELECTROCHIM ACTA, V34, P203

[2] INVESTIGATION ON FREQUENCY-DEPENDENCE OF IMPEDANCE OF NEARLY IDEALLY POLARIZABLE SEMICONDUCTOR ELECTRODES CDSE, CDS AND TIO2 [J].

DUTOIT, EC ;

VANMEIRHAEGHE, RL ;

CARDON, F ;

GOMES, WP .

BERICHTE DER BUNSEN-GESELLSCHAFT-PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 1975, 79 (12) :1206-1213

[3]

GOMES W, 1984, INTERFACE SEMICONDUC

[4] ANODIC GROWTH OF PASSIVE FILMS ON TITANIUM [J].

HURLEN, T ;

HORNKJOL, S .

ELECTROCHIMICA ACTA, 1991, 36 (01) :189-195

[5]

TOMKIEWICZ M, 1979, J ELECTROCHEM SOC, V126, P1506

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