CN108956741B - Preparation method of double-battery type chip oxygen sensor for motorcycle - Google Patents
Preparation method of double-battery type chip oxygen sensor for motorcycle Download PDFInfo
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Abstract
The invention discloses a novel double-cell type chip oxygen sensor for a motorcycle, which is formed by sintering a porous and outer protective layer, an oxygen pumping cell, a reference cell and a heating layer, wherein the oxygen pumping cell comprises the following components in parts by weight: comprises a first substrate, an external pump oxygen electrode and an internal pump oxygen electrode; the reference cell comprises a second substrate, a test electrode and a reference electrode; and a diffusion barrier and a diffusion cavity are arranged between the oxygen pumping cell and the reference cell. A preparation method of an oxygen sensor comprises the steps of preparing zirconia ceramic slurry, alumina ceramic slurry and porous alumina ceramic slurry and preparing a substrate by adopting a tape casting method; preparing an electrode, a diffusion barrier, a diffusion cavity, a heater and pins by adopting screen printing, and sintering at high temperature. According to the invention, the heating layer adopts the alumina casting substrate and adopts a double-battery structure, so that the testing precision is improved, and the heater is prevented from being directly contacted with the zirconia in the second substrate, therefore, an insulating layer is not required to be added, and the volume of the chip is reduced.
Description
Technical Field
The invention relates to the technical field of oxygen sensors for motorcycles, in particular to a double-battery type chip oxygen sensor for a motorcycle and a preparation method thereof.
Background
In view of environmental protection and energy conservation, and in the face of increasingly strict motorcycle emission regulations, closed-loop control of electronic fuel injection systems has become an important means for controlling exhaust emission, wherein an oxygen sensor is an essential element on closed-loop feedback electronic fuel injection motorcycles. The oxygen sensor on the motorcycle cannot block the exhaust pipe to influence the flow of the exhaust gas, and the oxygen sensor with small size must be adopted. At present, most of motorcycle oxygen sensors on the market are tubular chips, and the tubular type oxygen sensors are long in response time and large in size. The chip with a chip structure on the market is mainly of a full zirconia structure, and the volume of the chip cannot be small enough due to the existence of an insulating layer. And all these oxygen sensor output signals for motorcycle are the switching value, and its control accuracy is not high.
Disclosure of Invention
The invention aims to provide a double-battery type chip oxygen sensor for a motorcycle and a preparation method thereof, which are used for solving the problems that in the prior art, a chip with a chip structure is mainly of a full zirconia structure, the structure has a large volume due to the existence of an insulating layer, and the chip with the chip structure in the prior art has poor precision due to the fact that output signals of the chip are on-off values.
The invention solves the problems through the following technical scheme:
a sheet type oxygen sensor for dual-battery motorcycle is prepared from porous and external protecting layers, oxygen pumping battery, reference battery and heating layer through sintering,
pumping an oxygen battery: the porous and external protective layer is arranged on the upper surface of the first substrate, and the pump oxygen external electrode is arranged on the lower surface of the first substrate;
reference cell: the test device comprises a second substrate, a test electrode arranged on the upper surface of the second substrate and a reference electrode arranged on the lower surface of the second substrate;
a diffusion barrier and a diffusion cavity are arranged between the oxygen pumping cell and the reference cell, the diffusion cavity is located between the first substrate and the second substrate, the diffusion barrier is arranged between the diffusion cavity and the two sides of the first substrate and the second substrate, a channel for tail gas to enter the diffusion cavity is formed, and the oxygen pumping inner electrode and the testing electrode are located in the diffusion cavity.
Preferably, the porous and outer protective layer, the first substrate and the second substrate are made of a ceramic material having high temperature resistance, high conductivity and high mechanical strength.
Preferably, the porous and outer protective layer is made of an alumina substrate, and the first and second substrates are made of zirconia substrates.
Preferably, the porous and outer protection layer comprises an alumina layer made of an alumina substrate and a porous alumina layer made of a porous alumina substrate, the porous alumina layer and the alumina layer are spliced together and respectively cover two ends of the first substrate, and the alumina layer is provided with a through hole and a pin for leading out a signal.
Preferably, the heating layer comprises a first alumina casting substrate, a second alumina casting substrate and a heater, the heater is arranged between the lower surface of the first alumina casting substrate and the upper surface of the second alumina casting substrate by screen printing, and a heater pin for introducing heating voltage is arranged on the second alumina casting substrate.
Preferably, the diffusion cavity is a cavity formed between the pump oxygen inner electrode and the test electrode, and the cavity is formed by preparing screen printing slurry from carbon powder, then screen printing the slurry on the pump oxygen inner electrode, and volatilizing the carbon after sintering.
Preferably, the sheet type oxygen sensor for the double-battery motorcycle adopts an internal reference as a reference atmosphere, and the pump current of the sheet type oxygen sensor is 7-15 muA.
A preparation method of a sheet type oxygen sensor for a double-battery motorcycle comprises the following steps:
step S1: preparing a zirconium oxide substrate, an aluminum oxide substrate and a porous aluminum oxide substrate, and then punching positioning holes and through holes on the zirconium oxide substrate and the aluminum oxide substrate in a mechanical punching mode;
step S2: preparing pump oxygen electrode slurry and diffusion barrier slurry;
step S3: preparing a porous and outer protective layer, an oxygen pumping battery, a reference battery and a heating layer, wherein the method specifically comprises the steps of filling through holes on the porous and outer protective layer and screen printing electrode pins;
printing an oxygen pumping outer electrode and a lead on the upper surface of the first substrate in a screen printing manner, printing an oxygen pumping inner electrode and a lead on the lower surface of the first substrate in a screen printing manner, and filling the oxygen pumping inner electrode and the oxygen pumping outer electrode through holes to be led out from electrode pins on the upper surfaces of the porous and outer protective layers;
printing carbon slurry with the same size on the pump oxygen inner electrode in a screen printing manner, and printing diffusion barrier slurry on two sides of the pump oxygen inner electrode in a screen printing manner, wherein the printing thickness of the diffusion barrier is the same as the thickness of the pump oxygen electrode plus the carbon slurry;
printing a test electrode on the upper surface of the second substrate in a screen printing manner, printing a reference electrode on the lower surface of the second substrate in a screen printing manner, and leading the test electrode and the reference electrode out of the upper surfaces of the porous and outer protection layers through filling of the through holes;
printing a heater on the upper surface of the second aluminum oxide casting substrate by a screen printing mode, and simultaneously filling through holes and printing pins of the heater on the lower surface;
step S4: laminating the porous and outer protective layers, the oxygen pumping battery, the reference battery and the heating layer from top to bottom, pressing the laminated porous and outer protective layers into a whole by using warm water isostatic pressure, and cutting the ceramic block into a chip green body by adopting mechanical cutting;
step S5: placing the chip green body into a burning board, and placing the burning board into an air circulating furnace for slow glue discharging, wherein the highest glue discharging temperature is 600-800 ℃; and putting the chip green body with the discharged glue into a sintering furnace, sintering at 1350-1500 ℃ for 2 hours to form a product.
Preferably, the step S1 specifically includes:
step S11: preparing zirconia ceramic slurry, alumina ceramic slurry and porous alumina ceramic slurry;
step S12: respectively preparing the zirconia substrate, the alumina substrate and the porous alumina substrate by adopting a tape casting method from the zirconia ceramic slurry, the alumina ceramic slurry and the porous alumina ceramic slurry.
Preferably, the step S11 specifically includes:
step S111: zirconium oxide, yttrium oxide, aluminum oxide 1, a solvent, a dispersant, a binder and a plasticizer are mixed according to the mass percentage: (40-50): (4.5-6.5): (5-10): (25-35): (1-3): (3-5): (3-5), mixing materials, and then performing ball milling to form zirconia ceramic slurry;
step S112: aluminum oxide 1, aluminum oxide 2, sintering aid, solvent, dispersant, binder and plasticizer are mixed according to the mass percentage: (40-50): (2-4): (2-5): (30-40): (1-2): (3-5): (3-5), mixing materials, and then performing ball milling to form alumina ceramic slurry;
step S113: aluminum oxide 1, aluminum oxide 2, carbon powder, a solvent, a dispersant, a binder and a plasticizer are mixed according to the mass percentage: (25-35): (4-8): (4-8): (40-50): (1-2): (5-7): (2-4), burdening, and then ball-milling to form porous alumina ceramic slurry;
wherein the particle size range of alumina 1 (D50): 0.1-0.8 μm, specific surface area range: 6 to 12m2(ii)/g; particle size range of alumina 2 (D50): 2-5 μm, specific surface area range: 20 to 60m2/g。
Preferably, the step S2 specifically includes: platinum powder and carbon are mixed according to the mass percentage: (70-85): (15-30), and adding an organic solvent to prepare the pump oxygen electrode slurry; zirconium oxide and carbon are mixed according to the mass percentage: (40-70): (30-60), and adding an organic solvent to prepare the diffusion barrier slurry.
Compared with the prior art, the invention has the following advantages and beneficial effects:
(1) the invention cancels the traditional air reference cavity, adopts an internal reference mode to provide measurement reference for the sensor, reduces the size of a chip, simultaneously has more stable reference mode, is not influenced by air pollution, and improves the precision and the stability of output signals of the sensor; the structure is free from diffusion of the air cavity to the heat of the heater, so that the functional layer can reach the working temperature quickly and is heated more uniformly, and the response time and the signal stability of the sensor are improved.
(2) In the structure of the invention, no insulating layer is needed to be added, the width can not be influenced by the insulating layer, and the volume of the chip is further reduced; the double-battery structural design is adopted, and the output limit current corresponds to the air excess ratio lambda in a linear one-to-one manner, so that compared with the conventional switch type micro oxygen sensor, the invention can output a linear lambda value, and greatly improves the test precision and the test accuracy.
Drawings
FIG. 1 is a schematic structural view of the present invention;
1-porous and outer protective layer; 2-pump oxygen battery; 3-a reference cell; 4-heating layer; 11-a porous alumina layer; 12-an aluminum oxide layer; 13-a first pin; 14-a second pin; 15-a third pin; 21-oxygen pumping external electrode; 22-pump oxygen inner electrode; 23-a diffusion chamber; 24-diffusion barrier; 31-a test electrode; 32-a reference electrode; 41-a heater; 42-heater pin.
Detailed Description
The present invention will be described in further detail with reference to examples, but the embodiments of the present invention are not limited thereto.
Example 1:
as shown in figure 1, the sensor comprises a porous and outer protective layer 1, an oxygen pumping cell 2, a reference cell 3 and a heating layer 4, wherein the layers are stacked from top to bottom in sequence and then sintered. The porous and outer protection layer 1 is formed by combining a porous alumina layer 11 made of a porous alumina casting substrate and an alumina layer 12 made of an alumina casting substrate, the porous alumina layer 11 completely covers an oxygen pumping outer electrode 21, the alumina layer 12 covers an outer electrode lead, a sensor signal is led out from a through hole and an electrode pin in the alumina layer 12, and the electrode pin comprises a first pin 13, a second pin 14 and a third pin 15. The oxygen pumping battery 2 comprises a first zirconium oxide casting substrate, wherein an oxygen pumping outer electrode 21 is arranged on the upper surface of the first zirconium oxide casting substrate, the oxygen pumping outer electrode 21 is covered by a porous aluminum oxide layer 11, and a signal of the oxygen pumping outer electrode is led out from a first pin 13. The lower surface of the first zirconia casting substrate is provided with a pump oxygen internal electrode 22, the pump oxygen internal electrode 22 is positioned in a diffusion cavity 23, and the signal of the pump oxygen internal electrode is led out from a third pin 15. The diffusion barrier 24 and the diffusion cavity 23 are positioned between the oxygen pumping inner electrode 22 of the oxygen pumping cell 2 and the testing electrode 31 of the reference cell 3, the diffusion barrier 24 is formed by screen printing slurry prepared by adding carbon powder into zirconia powder, and the diffusion barrier 24 is positioned on two sides of the first zirconia casting substrate and the second zirconia casting substrate to form two channels which are used for tail gas to enter the diffusion cavity 23; the diffusion chamber 23 is prepared by screen printing slurry prepared from carbon powder, the shape of the diffusion chamber is formed on the pump oxygen internal electrode 22 through screen printing, and carbon is volatilized after sintering, namely, a cavity is formed between the pump oxygen internal electrode 22 and the test electrode 31. The reference cell 3 comprises a second zirconium dioxide casting substrate, a test electrode 31 and a reference electrode 32, wherein the test electrode 31 is arranged on the upper surface of the second zirconium dioxide casting substrate and is positioned in the diffusion cavity 23, the reference electrode 32 is arranged on the lower surface of the second zirconium dioxide casting substrate, the second zirconium dioxide casting substrate is provided with an electrode lead-out hole, and the reference electrode 32 is connected with the second pin 14 through hole filling. When the sensor works, the reference battery 3 needs to apply a pump current of 7-15 muA to the sensor as a test reference. The heating layer 4 is composed of a first alumina casting substrate, a second alumina casting substrate and a heater 41, the heater 41 is firstly formed on the upper surface of the second alumina casting substrate through screen printing, and heating voltage is introduced through a heater pin 42 and a through hole on the reverse side of the second alumina casting substrate. The first alumina casting substrate was provided in order to avoid short-circuiting of the heater 41 caused by direct contact of the heater 41 with the second zirconia casting substrate of the reference cell 3.
Example 2:
a manufacturing method of a sheet type oxygen sensor for a double-battery motorcycle comprises the following steps:
step S1: preparing zirconia ceramic slurry, alumina ceramic slurry and porous alumina ceramic slurry:
(1) zirconium oxide, yttrium oxide, aluminum oxide 1, a solvent, a dispersant, a binder and a plasticizer are mixed according to the mass percentage: 40: 6: 10: 35: 1: 5: 3, preparing materials, and then performing ball milling to form zirconia ceramic slurry;
wherein the particle size range of alumina 1 (D50): 0.1 μm, specific surface area range: 10m2(ii)/g; particle size range of alumina 2 (D50): 5 μm, specific surface area range: 40m2/g；
Step S2: respectively carrying out tape casting on the three ceramic slurries by adopting a tape casting method to respectively prepare a zirconia substrate, an alumina substrate and a porous alumina substrate, wherein the thicknesses of all the substrates are 0.1mm, and then punching positioning holes and through holes on the zirconia substrate and the alumina substrate by adopting a mechanical punching mode;
step S3: platinum powder and carbon are mixed according to the mass percentage: 70: 30, and adding an organic solvent to prepare pump oxygen electrode slurry; zirconium oxide and carbon are mixed according to the mass percentage: 70: 30, mixing, and adding an organic solvent to prepare diffusion barrier slurry;
step S4: preparing a porous and external protective layer, an oxygen pumping battery, a reference battery and a heating layer, specifically comprising printing an oxygen pumping external electrode and a lead on the upper surface of the oxygen pumping battery by adopting screen printing, then printing an oxygen pumping internal electrode and a lead on the lower surface, leading out the oxygen pumping internal electrode and the oxygen pumping external electrode from the upper surface of the porous and external protective layer through filling of through holes, printing carbon slurry with the same size on the oxygen pumping internal electrode, printing diffusion barrier slurry on two sides of the oxygen pumping internal electrode, wherein the printing thickness of the diffusion barrier is the same as the thickness of the oxygen pumping electrode and the carbon slurry;
and printing a test electrode on the upper surface of the reference cell by adopting screen printing, and printing a reference electrode on the lower surface of the reference cell. Similarly, two electrodes are led out from the upper surfaces of the porous and outer protective layers through the through hole filling;
a heater is printed on the upper surface of the lower alumina casting substrate of the heating layer by screen printing, and meanwhile through hole filling and pin printing of the heater on the lower surface are carried out. So far, the porous and outer protective layers, the oxygen pumping cell, the reference cell and the heating layer are prepared;
step S5: laminating the porous and outer protective layers, the oxygen pumping battery, the reference battery and the heating layer from top to bottom, pressing the laminated porous and outer protective layers into a whole by using warm water isostatic pressure, and cutting the ceramic block into a chip green body by adopting mechanical cutting;
step S6: placing the chip green body into a burning board, and placing the burning board into an air circulating furnace for slow glue discharging, wherein the highest glue discharging temperature is 700 ℃; and putting the chip green body after the glue is discharged into a sintering furnace to be sintered at 1350 ℃ to form a product.
Example 3:
step S1: preparing zirconia ceramic slurry, alumina ceramic slurry and porous alumina ceramic slurry:
zirconium oxide, yttrium oxide, aluminum oxide 1, a solvent, a dispersant, a binder and a plasticizer are mixed according to the mass percentage: 48: 6.5: 9: 25: 2.5: 4.5: 4.5, preparing materials, and then performing ball milling to form zirconia ceramic slurry;
Step S2: respectively carrying out tape casting on the three ceramic slurries by adopting a tape casting method to respectively prepare a zirconia substrate, an alumina substrate and a porous alumina substrate, wherein the thicknesses of all the substrates are 0.2mm, and then punching positioning holes and through holes on the zirconia substrate and the alumina substrate by adopting a mechanical punching mode;
step S3: platinum powder and carbon are mixed according to the mass percentage: 85: 15 mixing, and adding an organic solvent to prepare pump oxygen electrode slurry; zirconium oxide and carbon are mixed according to the mass percentage: 55: 45, mixing, and adding an organic solvent to prepare diffusion barrier slurry; step S4 and step S5 are the same as in example 2; step S6: placing the chip green body into a burning board, and placing the burning board into an air circulating furnace for slow glue discharging, wherein the glue discharging maximum temperature is 800 ℃; and putting the chip green body after the glue is discharged into a sintering furnace to be sintered at the high temperature of 1500 ℃ to form a product.
Example 4:
step S1: preparing zirconia ceramic slurry, alumina ceramic slurry and porous alumina ceramic slurry:
zirconium oxide, yttrium oxide, aluminum oxide 1, a solvent, a dispersant, a binder and a plasticizer are mixed according to the mass percentage: 50: 4.5: 5: 29.5: 3: 3: 5, preparing materials, and then performing ball milling to form zirconia ceramic slurry;
wherein the particle size range of alumina 1 (D50): 0.4 μm, specific surface area range: 12m2(ii)/g; particle size range of alumina 2 (D50): 3.5 μm, specific surface area range: 20m2/g；
Step S2: respectively carrying out tape casting on the three ceramic slurries by adopting a tape casting method to respectively prepare a zirconia substrate, an alumina substrate and a porous alumina substrate, wherein the thicknesses of all the substrates are 0.3mm, and then punching positioning holes and through holes on the zirconia substrate and the alumina substrate by adopting a mechanical punching mode;
step S3: platinum powder and carbon are mixed according to the mass percentage: 78: 22, mixing, and adding an organic solvent to prepare pump oxygen electrode slurry; zirconium oxide and carbon are mixed according to the mass percentage: 40: 60, mixing, and adding an organic solvent to prepare diffusion barrier slurry;
steps S4 to S5 are the same as in embodiment 2, and step S6: placing the chip green body into a burning board, and placing the burning board into an air circulating furnace for slow glue discharging, wherein the glue discharging maximum temperature is 600 ℃; and (4) putting the chip green body after the glue is discharged into a sintering furnace to be sintered at the high temperature of 1450 ℃ to form a product.
The formulation ratios used in examples 2-4 were designed to match the shrinkage, rate of shrinkage, and coefficient of thermal expansion of the two materials, alumina and zirconia, respectively, used in the construction.
Although the present invention has been described herein with reference to the illustrated embodiments thereof, which are intended to be preferred embodiments of the present invention, it is to be understood that the invention is not limited thereto, and that numerous other modifications and embodiments can be devised by those skilled in the art that will fall within the spirit and scope of the principles of this disclosure.
Claims (3)
1. A preparation method of a sheet type oxygen sensor for a double-battery motorcycle is characterized by comprising the following steps: the double-cell type motorcycle chip oxygen sensor is formed by sintering a porous and outer protective layer, an oxygen pumping cell, a reference cell and a heating layer which are sequentially stacked from top to bottom,
pumping an oxygen battery: the porous and external protective layer is arranged on the upper surface of the first substrate, and the pump oxygen external electrode is arranged on the lower surface of the first substrate;
reference cell: the test device comprises a second substrate, a test electrode arranged on the upper surface of the second substrate and a reference electrode arranged on the lower surface of the second substrate;
a diffusion barrier and a diffusion cavity are arranged between the oxygen pumping cell and the reference cell, the diffusion cavity is positioned between the first substrate and the second substrate, the diffusion barrier is arranged between the diffusion cavity and the two sides of the first substrate and the second substrate to form a channel for tail gas to enter the diffusion cavity, and the oxygen pumping inner electrode and the test electrode are positioned in the diffusion cavity;
the porous and outer protection layer comprises an alumina layer made of an alumina substrate and a porous alumina layer made of a porous alumina substrate, the porous alumina layer and the alumina layer are spliced together and respectively cover two ends of the first substrate, a through hole and a pin for signal extraction are arranged on the alumina layer, the first substrate and the second substrate are made of zirconia substrates, the heating layer is composed of a first alumina casting substrate, a second alumina casting substrate and a heater, the heater is formed between the lower surface of the first alumina casting substrate and the upper surface of the second alumina casting substrate by screen printing, and a heater pin for introducing heating voltage is arranged on the second alumina casting substrate; the sheet type oxygen sensor for the double-battery motorcycle adopts an internal reference as a reference atmosphere, the pump current of the sheet type oxygen sensor is 7 muA-15 muA, and the preparation method comprises the following steps:
step S1: preparing a zirconium oxide substrate, an aluminum oxide substrate and a porous aluminum oxide substrate, and then punching positioning holes and through holes on the zirconium oxide substrate and the aluminum oxide substrate in a mechanical punching mode;
the step S1 specifically includes:
step S11: preparing zirconia ceramic slurry, alumina ceramic slurry and porous alumina ceramic slurry;
step S111: zirconium oxide, yttrium oxide, aluminum oxide 1, a solvent, a dispersant, a binder and a plasticizer are mixed according to the mass percentage: (40-50): (4.5-6.5): (5-10): (25-35): (1-3): (3-5): (3-5), mixing materials, and then performing ball milling to form zirconia ceramic slurry;
step S112: aluminum oxide 1, aluminum oxide 2, sintering aid, solvent, dispersant, binder and plasticizer are mixed according to the mass percentage: (40-50): (2-4): (2-5): (30-40): (1-2): (3-5): (3-5), mixing materials, and then performing ball milling to form alumina ceramic slurry;
step S113: aluminum oxide 1, aluminum oxide 2, carbon powder, a solvent, a dispersant, a binder and a plasticizer are mixed according to the mass percentage: (25-35): (4-8): (4-8): (40-50): (1-2): (5-7): (2-4), burdening, and then ball-milling to form porous alumina ceramic slurry;
wherein the particle size range of alumina 1 (D50): 0.1-0.8 μm, specific surface area range: 6 to 12m2(ii)/g; particle size range of alumina 2 (D50): 2-5 μm, specific surface area range: 20 to 60m2/g；
Step S12: respectively preparing a zirconia substrate, an alumina substrate and a porous alumina substrate from the zirconia ceramic slurry, the alumina ceramic slurry and the porous alumina ceramic slurry by adopting a tape casting method; step S2: preparing pump oxygen electrode slurry and diffusion barrier slurry;
step S3: preparing a porous and external protective layer, an oxygen pumping cell, a reference cell and a heating layer, which specifically comprises,
filling through holes on the porous and outer protective layers and screen printing electrode pins;
printing an oxygen pumping outer electrode and a lead on the upper surface of the first substrate in a screen printing manner, printing an oxygen pumping inner electrode and a lead on the lower surface of the first substrate in a screen printing manner, and filling the oxygen pumping inner electrode and the oxygen pumping outer electrode through holes to be led out from electrode pins on the upper surfaces of the porous and outer protective layers;
printing carbon slurry with the same size on the pump oxygen inner electrode in a screen printing manner, and printing diffusion barrier slurry on two sides of the pump oxygen inner electrode in a screen printing manner, wherein the printing thickness of the diffusion barrier is the same as the thickness of the pump oxygen electrode plus the carbon slurry;
printing a test electrode on the upper surface of the second substrate in a screen printing manner, printing a reference electrode on the lower surface of the second substrate in a screen printing manner, and leading the test electrode and the reference electrode out of the upper surfaces of the porous and outer protection layers through filling of the through holes;
printing a heater on the upper surface of the second aluminum oxide casting substrate by a screen printing mode, and simultaneously filling through holes and printing pins of the heater on the lower surface;
step S4: laminating the porous and outer protective layers, the oxygen pumping battery, the reference battery and the heating layer from top to bottom, pressing the laminated porous and outer protective layers into a whole by using warm water isostatic pressure, and cutting the ceramic block into a chip green body by adopting mechanical cutting;
step S5: placing the chip green body into a burning board, and placing the burning board into an air circulating furnace for slow glue discharging, wherein the highest glue discharging temperature is 600-800 ℃; and putting the chip green body after the glue is discharged into a sintering furnace, and sintering at 1350-1500 ℃ to form a product.
2. The method for manufacturing a two-cell type chip oxygen sensor for motorcycles according to claim 1, wherein the step S2 specifically includes: platinum powder and carbon are mixed according to the mass percentage: (70-85): (15-30), and adding an organic solvent to prepare the pump oxygen electrode slurry; zirconium oxide and carbon are mixed according to the mass percentage: (40-70): (30-60), and adding an organic solvent to prepare the diffusion barrier slurry.
3. The method for preparing a chip oxygen sensor for a two-cell motorcycle of claim 1, wherein the diffusion chamber is a cavity formed between the pump oxygen internal electrode and the test electrode, and the cavity is formed by preparing screen printing slurry from carbon powder, then screen printing the screen printing slurry on the pump oxygen internal electrode, and volatilizing carbon after sintering.
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| CN109613099A (en) * | 2018-12-12 | 2019-04-12 | 厦门海赛米克新材料科技有限公司 | Chip oxygen sensing device, the exhaust pipe of engine and motor vehicle |
| CN109557151A (en) * | 2019-01-15 | 2019-04-02 | 中国电子科技集团公司第四十九研究所 | The manufacturing method of sensing unit based on ceramic co-fired technique, the electrochemical gas sensor containing the sensing unit and sensing unit |
| CN111505084A (en) * | 2019-01-31 | 2020-08-07 | 苏州工业园区传世汽车电子有限公司 | Sensing element and preparation method thereof |
| CN110988084A (en) * | 2019-12-27 | 2020-04-10 | 苏州溢亮材料科技有限公司 | Durable sheet type oxygen sensor |
| CN113125542A (en) * | 2021-04-19 | 2021-07-16 | 连云港感瓷电子科技有限公司 | Nitrogen oxygen sensor ceramic chip with low concentration and high measurement precision |
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| CN106370712A (en) * | 2016-09-28 | 2017-02-01 | 成都凯天电子股份有限公司 | Zirconium sheet type chip oxygen sensor and preparation method thereof |
| CN107741447A (en) * | 2017-11-13 | 2018-02-27 | 嘉兴佳利电子有限公司 | The chip oxygen sensor ceramic chip that a kind of zirconia ceramics burns altogether with aluminium oxide ceramics |
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| CN108956741A (en) | 2018-12-07 |
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