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1. WO2020065952 - CERAMIC STRUCTURE AND SENSOR ELEMENT FOR GAS SENSOR

Publication Number WO/2020/065952
Publication Date 02.04.2020
International Application No. PCT/JP2018/036400
International Filing Date 28.09.2018
IPC
C04B 38/00 2006.01
CCHEMISTRY; METALLURGY
04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
BLIME; MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
38Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
G01N 27/409 2006.01
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
27Investigating or analysing materials by the use of electric, electro-chemical, or magnetic means
26by investigating electrochemical variables; by using electrolysis or electrophoresis
403Cells and electrode assemblies
406Cells and probes with solid electrolytes
407for investigating or analysing gases
409Oxygen concentration cells
G01N 27/416 2006.01
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
27Investigating or analysing materials by the use of electric, electro-chemical, or magnetic means
26by investigating electrochemical variables; by using electrolysis or electrophoresis
416Systems
CPC
C04B 38/00
CCHEMISTRY; METALLURGY
04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE
38Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
G01N 27/409
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
27Investigating or analysing materials by the use of electric, electro-chemical, or magnetic means
26by investigating electrochemical variables; by using electrolysis or electrophoresis
403Cells and electrode assemblies
406Cells and probes with solid electrolytes
407for investigating or analysing gases
409Oxygen concentration cells
G01N 27/416
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
27Investigating or analysing materials by the use of electric, electro-chemical, or magnetic means
26by investigating electrochemical variables; by using electrolysis or electrophoresis
416Systems
Applicants
  • 日本碍子株式会社 NGK INSULATORS, LTD. [JP]/[JP]
Inventors
  • 藤▲崎▼ 恵実 FUJISAKI Megumi
  • 坪井 美香 TUBOI Mika
  • 冨田 崇弘 TOMITA Takahiro
Agents
  • 吉竹 英俊 YOSHITAKE Hidetoshi
  • 有田 貴弘 ARITA Takahiro
Priority Data
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) CERAMIC STRUCTURE AND SENSOR ELEMENT FOR GAS SENSOR
(FR) STRUCTURE CÉRAMIQUE ET ÉLÉMENT DÉTECTEUR POUR CAPTEUR DE GAZ
(JA) セラミックス構造体およびガスセンサのセンサ素子
Abstract
(EN)
A sensor element for a gas sensor, comprising: an element substrate being a ceramic structure comprising a detection unit for a gas component to be detected; and a protective layer provided on at least part of the outermost peripheral section of the element substrate. A plurality of convex sections having a size of no more than 1.0 µm and comprising fine ceramic particles having a particle diameter of 10 nm to 1.0 µm are formed discreetly on the protective layer, around a plurality of coarse ceramic particles having a particle diameter of 5.0–40 µm. The individual coarse ceramic particles are directly connected or are connected via the fine ceramic particles. The porosity of the protective layer is 5%–50%.
(FR)
La présente invention concerne un élément détecteur pour un capteur de gaz, comprenant : un substrat d'élément qui est une structure céramique comprenant une unité de détection pour un composant gazeux à détecter ; et une couche protectrice disposée sur au moins une partie de la section périphérique la plus à l'extérieur du substrat d'élément. Une pluralité de sections convexes d'une taille non supérieure à 1,0 µm et comprenant des particules céramiques fines ayant un diamètre de particule de 10 nm à 1,0 µm sont formées discrètement sur la couche protectrice, autour d'une pluralité de particules céramiques grossières ayant un diamètre de 5,0 à 40 µm.Les particules céramiques grossières individuelles sont directement reliées ou sont reliées par l'intermédiaire des particules céramiques fines.La porosité de la couche protectrice est de 5 % à 50 %.
(JA)
ガスセンサのセンサ素子が、検知対象ガス成分の検知部を備えたセラミックス構造体である素子基体と、素子基体の最外周部の少なくとも一部に設けられた保護層と、を備え、保護層においては、粒子径が5.0μm~40μmである多数のセラミックス粗粒子の周囲に、粒子径が10nm以上1.0μm以下のセラミックス微粒子からなる大きさが1.0μm以下の多数の凸部が離散的に形成されてなり、個々のセラミックス粗粒子が直接にまたはセラミックス微粒子を介して連接してなり、保護層の気孔率は5%~50%である、ようにした。
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