THE EFFECT OF CHLORINE ON THE HIGH-TEMPERATURE CORROSION OF SIO2-COATED INCOLOY 800H

被引：1

作者：

HAANAPPEL, VAC ^{[1
]}

VANCORBACH, HD ^{[1
]}

HOFMAN, R ^{[1
]}

FRANSEN, T ^{[1
]}

GELLINGS, PJ ^{[1
]}

机构：

[1] TWENTE UNIV TECHNOL,DEPT CHEM TECHNOL,POB 217,7500 AE ENSCHEDE,NETHERLANDS

来源：

JOURNAL DE PHYSIQUE IV | 1993年 / 3卷 / C9期

关键词：

D O I：

10.1051/jp4:1993995

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The effect of chlorine in coal gasification atmospheres was investigated on the high temperature corrosion of Incoloy 800H coated with SiO2. The experiments were performed in a representative gas mixture between 450 and 750-degrees-C. The weight gain in this environment was significantly decreased with coating thicknesses to about 1.4 mum. Larger thicknesses led to an increased corrosion attack. The coating contained small cracks filled with iron-nickel sulphides. Probably, pre-existing cracks in the SiO2-coating due to internal stresses, were responsible for this behaviour of the coating. With increasing temperature or p(Cl2), the corrosion rate increased. The mechanism of the chlorine-induced corrosion is unclear as yet.

引用

页码：921 / 930

页数：10

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