NO.sub.x sensor for exhaust gas, and process for producing the s

Details NO.sub.x sensor for exhaust gas, and process for producing the s NO.sub.x sensor for exhaust gas, and process for producing the s

1997-11-07

1999-10-12

Williams, Hezron

Measuring and testing

Gas analysis

With compensation detail

73 3106, 73 3102, 422 90, 422 98, 29 2501, 324 715, 338 34, G01N 2712, G01N 2900, H01C 700

Patent

active

059658029

ABSTRACT:
An NO.sub.x sensor is produced by sintering a plurality of columnar crystals of .beta.-type Nb.sub.2 O.sub.5. The average value M of aspect ratios b/a (wherein a represents a width and b represents a length) in the columnar crystals is set in a range of 2.11<M.ltoreq.5. The NO.sub.x sensor has a high sensitivity to NO.sub.x via an enhancement attained by control of crystal type and structure.

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