-
公开(公告)号:US20130104625A1
公开(公告)日:2013-05-02
申请号:US13665731
申请日:2012-10-31
发明人: Sigehiro OTSUKA , Masaki ONKAWA , Toru IWANO , Satoshi TERAMOTO , Kuniharu TANAKA , Ken MITSUOKA , Takeshi Mitsuoka
IPC分类号: G01N33/00
CPC分类号: G01N27/4077 , G01N33/0014 , G01N33/0037 , Y02A50/245
摘要: A gas sensor element (100) includes a laminate of a detection element (300) and a heater (200), and a porous protection layer (20) covering a forward end portion thereof. The laminate has a measuring chamber (107c) into which a gas-to-be-measured is introduced via a diffusion resistor (115). The porous protection layer includes an inner porous layer (21), and an outer porous layer (23). The inner porous layer has a higher porosity than the outer porous layer and the diffusion resistor. As viewed in a plurality of 100 μm×100 μm regions a1 to a3 and b1 to b3 on sections of the inner porous layer and the diffusion resistor, respectively, a pore diameter greater than the greatest pore diameter CDIF in the regions of the diffusion resistor exists in each of the regions of the inner porous layer.
摘要翻译: 气体传感器元件(100)包括检测元件(300)和加热器(200)的层叠体,以及覆盖其前端部的多孔保护层(20)。 层压体具有经由扩散电阻器(115)引入待测气体的测量室(107c)。 多孔保护层包括内多孔层(21)和外多孔层(23)。 内部多孔层具有比外部多孔层和扩散电阻器更高的孔隙率。 从内部多孔层和扩散电阻的各部分的多个100mum×100mum区域a1〜a3,b1〜b3分别观察到,扩散电阻区域的孔径大于最大孔径CDIF 存在于内部多孔层的每个区域中。