GAS SENSOR

摘要

An exhaust gas sensor (10) includes a first electrode (16), a second electrode (14), and an electrolyte (20) disposed between the first electrode (16) and the second electrode (14). The electrolyte (20) includes a first portion (12) disposed at least in partial physical contact and in ionic communication with a second portion (18). The first portion (12) has a first portion grain size which is different than a second portion grain size. Further, a method for manufacturing a gas sensor (10) includes forming a multiple portion electrolyte (20). The electrolyte (20) is formed with a first portion (12) having one grain size, and a second portion (18) at least in partial physical contact and in ionic contact with the first portion (12), the second portion (18) having a second portion grain size different from the first portion grain size. The electrolyte (20) may be fired before or after application of an electrode (16) in ionic contact with the first portion (12) and a second electrode (14) in ionic contact with said second portion (18).