SENSOR ELEMENT AND GAS SENSOR

PROBLEM TO BE SOLVED: To improve water resistance of an element body of a sensor element.SOLUTION: A sensor element 101 includes an element body 101a of oxygen ion conducting solid electrolyte layers (1-6); and a porous protective layer 90 covering at least part of the element body 101a. The porous...

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Main Authors WATANABE ATSUSHI, IWAI SHIHO, OZAWA SHUICHI, KIYOTA HIROHITO, SUZUKI TAKASHI, MORIYAMA SATOKO
Format Patent
LanguageEnglish
Japanese
Published 12.10.2017
Subjects
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
MEASURING
PHYSICS
TESTING
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Summary:PROBLEM TO BE SOLVED: To improve water resistance of an element body of a sensor element.SOLUTION: A sensor element 101 includes an element body 101a of oxygen ion conducting solid electrolyte layers (1-6); and a porous protective layer 90 covering at least part of the element body 101a. The porous protective layer 90 includes: a porous inside protection layer 92; and a porous outer protective layer 91 positioned outwardly from the inside protection layer 92 and having an average pore diameter smaller than that of the inside protection layer 92.SELECTED DRAWING: Figure 2 【課題】センサ素子の素子本体の耐被水性を向上させる。【解決手段】センサ素子１０１は、酸素イオン伝導性の固体電解質層（１〜６）を備えた素子本体１０１ａと、素子本体１０１ａの少なくとも一部を被覆する多孔質保護層９０と、を備えている。多孔質保護層９０は、多孔質の内側保護層９２と、内側保護層９２よりも外側に位置し且つ平均気孔径が内側保護層９２よりも小さい多孔質の外側保護層９１と、を有している。【選択図】図２
Bibliography:Application Number: JP20170058596