THE BEHAVIOR OF TIN DIOXIDE SENSORS IN EXHAUST ENVIRONMENTS AT LOW AND INTERMEDIATE TEMPERATURES

被引：6

作者：

EASTWOOD, PG ^{[1
]}

CLAYPOLE, TC ^{[1
]}

WATSON, J ^{[1
]}

COLES, GSV ^{[1
]}

机构：

[1] UNIV COLL SWANSEA, DEPT ELECT & ELECTR ENGN, SWANSEA SA2 8PP, W GLAM, WALES

来源：

MEASUREMENT SCIENCE AND TECHNOLOGY | 1993年 / 4卷 / 04期

关键词：

D O I：

10.1088/0957-0233/4/4/015

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Tin dioxide has been employed for at least 20 years in solid-state gas sensors and their general purpose usage in the ambient atmosphere is contrasted with that of some other metal oxides conventionally employed in the exhaust environment. Electron transfer mechanisms are thought to be predominant in the former, whilst the effect of oxygen vacancies is more often invoked as an explanation of behaviour in the latter. This difference has arisen largely as a result of the respective application temperatures. Some tin dioxide-based sensors are tested in an exhaust stream alongside two conventional oxides (niobia and titania), in order to determine their suitability for indicating air : fuel ratio (AFR) at the temperatures at which tin dioxide sensors are commonly operated.

引用

页码：524 / 533

页数：10

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