公开(公告)号：US11782017B2

公开(公告)日：2023-10-10

申请号：US15742148

申请日：2016-07-04

Applicant: DENSO CORPORATION

Inventor： Mitsunobu Nakatou ,  Keigo Mizutani ,  Takashi Araki ,  Tadashi Nakamura

IPC: G01N27/41 ,  G01N27/407 ,  G01N27/409 ,  G01N27/419

CPC classification number: G01N27/41 ,  G01N27/409 ,  G01N27/4074 ,  G01N27/4075 ,  G01N27/419

Abstract: On a cross sectional surface X1 of a pump electrode 3 in a gas sensor element forming a gas sensor, a noble metal area 31 having Pt—Au aggregations, a solid electrolyte area 32 having solid electrolyte aggregations, a mixture area in which Pt—Au alloy and solid electrolyte are distributed, and pores 34. The mixture area 33 is formed within a range of 30 to 90% in an overall area of the cross sectional surface X1, excepting the pores 34. The pores are formed adjacent to the mixture area 33.

公开(公告)号：US11085895B2

公开(公告)日：2021-08-10

申请号：US14646914

申请日：2013-11-18

Applicant: DENSO CORPORATION

Inventor： Norikazu Kajiyama ,  Tadashi Nakamura

IPC: G01N27/407

Abstract: In a gas sensor element 1 capable of detecting a concentration of a specific gas contained in a measuring target gas, an electrode 12 formed on a solid electrolyte body 11 having an oxygen ion conductivity is made of noble metal and solid electrolyte. The electrode 12 has a noble metal part 121 made of the noble metal, a solid electrolyte part 122 made of the solid electrolyte, and a mixture part 123 made of the noble metal and the solid electrolyte when a cross-sectional surface of the electrode 12 is observed. The mixture part 123 is formed along an interface part 120 between the noble metal part 121 and the solid electrolyte part 122.