JPH0185663U - - Google Patents
Info
- Publication number
- JPH0185663U JPH0185663U JP18206387U JP18206387U JPH0185663U JP H0185663 U JPH0185663 U JP H0185663U JP 18206387 U JP18206387 U JP 18206387U JP 18206387 U JP18206387 U JP 18206387U JP H0185663 U JPH0185663 U JP H0185663U
- Authority
- JP
- Japan
- Prior art keywords
- zirconia tube
- zirconia
- sensor
- ittria
- oxygen sensor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims description 26
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 4
- 229910052760 oxygen Inorganic materials 0.000 claims description 4
- 239000001301 oxygen Substances 0.000 claims description 4
- 238000010304 firing Methods 0.000 claims description 3
- 230000004913 activation Effects 0.000 claims 1
- RUDFQVOCFDJEEF-UHFFFAOYSA-N yttrium(III) oxide Inorganic materials [O-2].[O-2].[O-2].[Y+3].[Y+3] RUDFQVOCFDJEEF-UHFFFAOYSA-N 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Measuring Oxygen Concentration In Cells (AREA)
Description
第１図および第２図は本考案の実施例を示し、
第１図はジルコニアチユーブの縦断面図、第２図
は仮焼成後のジルコニアチユーブをイツトリアペ
ースト中に浸漬させた状態を示す縦断面図、第３
図ないし第７図は従来技術を示し、第３図は酸素
センサの縦断面図、第４図はジルコニアチユーブ
の縦断面図、第５図はジルコニアチユーブの先端
側を拡大して示す部分詳細断面図、第６図は周囲
温度と検出信号との関係を示す特性線図、第７図
はジルコニアチユーブのイツトリア含有量と比抵
抗との関係を示す特性線図である。
１…センサ本体、２…ホルダ、３…キヤツプ、
４…絶縁筒体、７…内側電極、８…外側電極、１
１…コンタクトプレート、１２…リード線、２１
…ジルコニアチユーブ、２２…イツトリア高比率
層、２３…浴槽、２４…イツトリアペースト。
1 and 2 show an embodiment of the present invention,
Fig. 1 is a longitudinal cross-sectional view of a zirconia tube, Fig. 2 is a longitudinal cross-sectional view showing the zirconia tube immersed in itria paste after pre-firing, and Fig. 3
7 to 7 show the prior art, FIG. 3 is a vertical cross-sectional view of an oxygen sensor, FIG. 4 is a vertical cross-sectional view of a zirconia tube, and FIG. 5 is a partially detailed cross-section showing an enlarged view of the tip side of the zirconia tube. FIG. 6 is a characteristic diagram showing the relationship between ambient temperature and detection signal, and FIG. 7 is a characteristic diagram showing the relationship between itria content and specific resistance of the zirconia tube. 1...Sensor body, 2...Holder, 3...Cap,
4... Insulating cylinder, 7... Inner electrode, 8... Outer electrode, 1
1... Contact plate, 12... Lead wire, 21
... Zirconia tube, 22... Ittria high ratio layer, 23... Bathtub, 24... Ittria paste.
Claims (1)
、ジルコニアにイツトリアを所定比率で混合して
焼成することにより形成されたジルコニアチユー
ブと、該ジルコニアチユーブの内、外面に設けら
れた内側電極、外側電極とからなる酸素センサに
おいて、前記ジルコニアチユーブの活性化温度を
下げるべく、該ジルコニアチユーブの少なくとも
内面または外面側にイツトリア高比率層を形成し
たことを特徴とする酸素センサ。 (2) 前記イツトリア高比率層は、前記ジルコニ
アチユーブの仮焼成後に、該ジルコニアチユーブ
の内面または外面側から所定濃度のイツトリアペ
ーストを含浸させることにより形成してなる実用
新案登録請求の範囲(1)項記載の酸素センサ。[Claims for Utility Model Registration] (1) A sensor body, a zirconia tube attached to the sensor body and formed by mixing and firing zirconia and itria in a predetermined ratio, and the inner and outer surfaces of the zirconia tube. An oxygen sensor comprising an inner electrode and an outer electrode provided in the oxygen sensor, characterized in that a high yttria ratio layer is formed on at least the inner or outer surface of the zirconia tube in order to lower the activation temperature of the zirconia tube. sensor. (2) The high ittria ratio layer is formed by impregnating ittria paste at a predetermined concentration from the inner or outer surface of the zirconia tube after pre-firing the zirconia tube. Oxygen sensor described in ).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18206387U JPH0185663U (en) | 1987-11-30 | 1987-11-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18206387U JPH0185663U (en) | 1987-11-30 | 1987-11-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0185663U true JPH0185663U (en) | 1989-06-07 |
Family
ID=31473519
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18206387U Pending JPH0185663U (en) | 1987-11-30 | 1987-11-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0185663U (en) |
-
1987
- 1987-11-30 JP JP18206387U patent/JPH0185663U/ja active Pending
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