CN108956741A - A kind of automobile-used chip oxygen sensor of Novel double-battery type motor and preparation method thereof - Google Patents
A kind of automobile-used chip oxygen sensor of Novel double-battery type motor and preparation method thereof Download PDFInfo
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Abstract
The invention discloses a kind of automobile-used chip oxygen sensors of Novel double-battery type motor, are sintered by porous and external protection, pump oxygen cell, reference cell and heating layer, pump oxygen cell: including electrode in the first substrate, pump oxygen external electrode and pump oxygen；Reference cell includes the second substrate, test electrode and reference electrode；It pumps and is equipped with diffusion barrier and diffusion chamber between oxygen cell and reference cell.A kind of preparation method of lambda sensor, including prepare zirconia ceramics slurry, aluminium oxide ceramics slurry and porous alumina ceramic slurry and substrate is prepared using the tape casting；Electrode, diffusion barrier, diffusion chamber, heater and pin, high temperature sintering are prepared using silk-screen printing.Heating layer is cast substrate using aluminium oxide in the present invention, uses dual-battery structure, improves measuring accuracy, avoid heater and directly contact with the zirconium oxide in the second substrate, there is no need to add insulating layer again, reduce the volume of chip.
Description
Technical field
The present invention relates to motor lambda sensor technical fields, are that a kind of Novel double-battery type motor is automobile-used specifically
Chip oxygen sensor and preparation method thereof.
Background technique
The considerations of for environmental protection and energy conservation aspect, while increasingly strict Emission Regulation for Motorcycles Running is faced, closed-loop control
Electric injection system has become the important means of Exhaust Emission Control, wherein lambda sensor be must not on closed-loop feed-back type motorcycle with electronic fuel injection system
The element that can lack.Lambda sensor on motorcycle cannot block exhaust pipe and influence exhaust gas flowing, it is necessary to using the oxygen of small size
Sensor.Currently, oxygen sensor of motorcycle on the market is still in the majority with tubular type chip, due to being tubular type, its response is just determined
Time is long, and volume is larger.Slice structure chip on the market based on all-zirconium oxide structure, deposited due to insulating layer by this structure
Result in its volume can not accomplish it is sufficiently small.And all these motor oxygen sensor used in vehicle output signals are switch
Amount, control precision be not high.
Summary of the invention
The purpose of the present invention is to provide a kind of automobile-used chip oxygen sensor of Novel double-battery type motor and preparation method thereof,
For solving, based on all-zirconium oxide structure, this structure is caused slice structure chip due to the presence of insulating layer in the prior art
The larger problem of its volume, and in the prior art slice structure chip signal output is that precision caused by switching value is poor
Problem.
The present invention is solved the above problems by following technical proposals:
A kind of automobile-used chip oxygen sensor of Novel double-battery type motor, by the porous and outer protection successively stacked from top to bottom
Layer, pump oxygen cell, reference cell and heating layer are sintered, wherein
Pump oxygen cell: including the first substrate, pump oxygen external electrode that first substrate upper surface is arranged in and setting be the
Electrode in the pump oxygen of one substrate lower surface, the pump oxygen external electrode are covered by described porous and external protection；
Reference cell: including the second substrate, the test electrode of second substrate upper surface is set and is arranged second
The reference electrode of substrate lower surface；
Diffusion barrier and diffusion chamber are provided between pump oxygen cell and the reference cell, the diffusion chamber is located at described first
Between substrate and the second substrate, it is provided with diffusion barrier between the first substrate and the two sides and diffusion chamber of the second substrate, forms tail gas
Into the channel of diffusion chamber, electrode and test electrode are in diffusion chamber in the pump oxygen.
Preferably, described porous and external protection, the first substrate and the second substrate use high temperature resistant, high conductance and high machine
The ceramic material of tool intensity is made.
Preferably, described porous and external protection is made of alumina substrate, and first substrate and the second substrate are adopted
It is made of zirconium oxide substrate.
Preferably, described porous and external protection includes the alumina layer made of alumina substrate, further includes by porous
Porous alumina layer made of alumina substrate, the porous alumina layer and alumina layer are stitched together, are respectively overlay in
The both ends of first substrate are provided with the through-hole and pin drawn for signal on the alumina layer.
Preferably, the heating layer is made of the first aluminium oxide curtain coating substrate, the second aluminium oxide curtain coating substrate and heater,
The heater is using the lower surface and the second aluminium oxide curtain coating substrate for being screen printed onto the first aluminium oxide curtain coating substrate
Between upper surface, the heater pin for introducing heating voltage is provided on the second aluminium oxide curtain coating substrate.
Preferably, the diffusion chamber is in the cavity formed between electrode and test electrode in pump oxygen, and the cavity is by carbon
Powder be prepared into screen printing sizing agent then be screen printed onto be sintered on electrode in pump oxygen after carbon volatilize to be formed.
Preferably, the automobile-used chip oxygen sensor of Novel double-battery type motor is used as using internal reference ratio and refers to atmosphere,
Pump electric current is 7 μ A-15 μ A.
A kind of preparation method of the automobile-used chip oxygen sensor of Novel double-battery type motor, comprising:
Step S1: being prepared zirconium oxide substrate, alumina substrate and porous oxidation aluminium substrate, then using mechanical punching
Mode charge and attack location hole and through-hole in zirconium oxide substrate and alumina base on piece；
Step S2: preparation pump oxygen electrode slurry and diffusion barrier slurry；
Step S3: preparing porous and external protection, pump oxygen cell, reference cell and heating layer, specifically include,
Through-hole filling and screen printing electrode pin are carried out on porous and external protection；
Oxygen dispatch from foreign news agency grade and conducting wire are pumped in the upper surface silk-screen printing of the first substrate, in the lower surface silk-screen printing of the first substrate
Electrode and conducting wire in oxygen are pumped, pumps electrode in oxygen, pump oxygen external electrode is filled by through-hole from porous and external protection upper surface electricity
Pole pin is drawn；
An equal amount of carbon pastes of silk-screen printing on electrode, the electrode two sides silk-screen printing diffusion barrier in pump oxygen in pump oxygen
The print thickness of slurry, diffusion barrier should be identical plus the thickness of carbon pastes as pump oxygen electrode；
Electrode is tested in the upper surface silk-screen printing of the second substrate, in the lower surface silk-screen printing reference electricity of the second substrate
Pole, test electrode, reference electrode are filled from porous and external protection upper surface by through-hole and are drawn；
The second aluminium oxide curtain coating substrate upper surface silk-screen printing formed heater, while carry out through-hole filling and under
The printing of surface heater pin；
Step S4: by porous and external protection, pump oxygen cell, reference cell, heating layer in accordance with the order from top to bottom into
Then row lamination is compressed into entirety using static pressure such as warm water, ceramic block is cut into chip green compact using machine cuts；
Step S5: chip green compact are put into load bearing board, and load bearing board is put into air circulating oven and carries out slow dumping, row
Glue maximum temperature is 600~800 DEG C；The chip green compact of drained glue are put into sintering furnace, are burnt at 1350 DEG C~1500 DEG C
Knot is sintered 2 hours, forms product.
Preferably, the step S1 is specifically included:
Step S11: zirconia ceramics slurry, aluminium oxide ceramics slurry and porous alumina ceramic slurry are prepared；
Step S12: stream is respectively adopted in zirconia ceramics slurry, aluminium oxide ceramics slurry and porous alumina ceramic slurry
Prolong legal system and obtains zirconium oxide substrate, alumina substrate and porous oxidation aluminium substrate.
Preferably, the step S11 is specifically included:
Step S111: zirconium oxide, yttrium oxide, aluminium oxide 1, solvent, dispersing agent, binder, plasticizer are pressed into quality percentage
Than: (40~50): (4.5~6.5): (5~10): (25~35): (1~3): (3~5): (3~5) carry out ingredient, then ball
Mill forms zirconia ceramics slurry；
Step S112: aluminium oxide 1, aluminium oxide 2, sintering aid, solvent, dispersing agent, binder, plasticizer are pressed into quality hundred
Divide ratio: (40~50): (2~4): (2~5): (30~40): (1~2): (3~5): (3~5), carries out ingredient, then ball milling shape
At aluminium oxide ceramics slurry；
Step S113: aluminium oxide 1, aluminium oxide 2, carbon dust, solvent, dispersing agent, binder, plasticizer are pressed into quality percentage
Than: (25~35): (4~8): (4~8): (40~50): (1~2): (5~7): (2~4) carry out ingredient, and then ball milling is formed
Porous alumina ceramic slurry；
The wherein particle size range (D50) of aluminium oxide 1: 0.1~0.8 μm, specific surface area range: 6~12m2/g；Aluminium oxide 2
Particle size range (D50): 2~5 μm, specific surface area range: 20~60m2/g。
Preferably, the step S2 is specifically included: by mass percentage by platinum powder, carbon: (70~85): (15~30) are mixed
It closes, adds organic solvent and pump oxygen electrode slurry is prepared；By mass percentage by zirconium oxide, carbon: (40~70): (30~
60) it mixes, adds organic solvent and diffusion barrier slurry is prepared.
Compared with prior art, the present invention have the following advantages that and the utility model has the advantages that
(1) present invention cancels conventional air reference cavity, takes the mode of interior reference to provide measurement reference to sensor, reduces
Chip size, while this reference mode is more stable, not by air pollution effect, improve the essence of sensor output signal
Degree and stability；There is no air chamber in structure to the diffusion of heater heat, functional layer is enable quickly to reach operating temperature
And it is uniformly heated, the response time of sensor and signal stabilization is made all to be improved.
(2) without adding any insulating layer in structure of the invention, width can be unaffected, has further reduced core
The volume of piece；It is designed using dual-battery structure, the carrying current and the linear one-to-one correspondence of excess air ratio λ of output, therefore
Compared to the miniature lambda sensor of current switching mode, the present invention can export linear λ value, and measuring accuracy greatly improved and test is quasi-
True property.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention；
1- is porous and external protection；2- pumps oxygen cell；3- reference cell；4- heating layer；11- porous alumina layer；12- oxygen
Change aluminium layer；The first pin of 13-；14- second pin；15- third pin；21- pumps oxygen external electrode；22- pumps electrode in oxygen；23- expands
Dissipate chamber；24- diffusion barrier；31- tests electrode；32- reference electrode；41- heater；42- heater pin.
Specific embodiment
The present invention is described in further detail below with reference to embodiment, embodiments of the present invention are not limited thereto.
Embodiment 1:
As shown in Figure 1, the sensor includes porous and external protection 1, pump oxygen cell 2, reference cell 3 and heating layer 4, respectively
Layer is sintered after from top to bottom successively overlapping.Described porous and external protection 1 includes made of porous aluminas curtain coating substrate
Alumina layer 12 made of porous alumina layer 11 and aluminium oxide curtain coating substrate is combined into, and porous alumina layer 11 is completely covered
Pump oxygen external electrode 21, alumina layer 12 cover external electrode lead, sensor signal by alumina layer 12 through-hole and electrode draw
Foot is drawn, and electrode pin includes the first pin 13, second pin 14 and third pin 15.Pumping oxygen cell 2 includes the first zirconium oxide
It is cast substrate, the first zirconium oxide is cast substrate upper surface setting pump oxygen dispatch from foreign news agency grade 21, pumps oxygen dispatch from foreign news agency grade 21 by porous alumina layer
11 coverings, signal are drawn by the first pin 13.First zirconium oxide is cast electrode 22 in substrate lower surface setting pump oxygen, pumps in oxygen
Electrode 22 is in diffusion chamber 23, and signal is drawn by third pin 15.Diffusion barrier 24 and diffusion chamber 23 are in pump oxygen cell 2
It pumps in oxygen between electrode 22 and the test electrode 31 of reference cell 3, diffusion barrier 24 is to add carbon dust to be prepared into silk screen by zirconia powder
Then printing slurry is formed by silk-screen printing, be located at the first zirconium oxide curtain coating substrate, the second zirconium oxide is cast the two of substrate
Side forms binary channels, is the channel that tail gas enters diffusion chamber 23；Diffusion chamber 23 is to be prepared into screen printing sizing agent by carbon dust, is led to
It crosses silk-screen printing its shape is formed in pump oxygen on electrode 22, carbon volatilizees after sintering, i.e., electrode 22 and test electricity in pump oxygen
Cavity is formed between pole 31.Reference cell 3 includes that the second zirconium oxide curtain coating substrate, test electrode 31 and reference electrode 32 form,
Second zirconium oxide is cast substrate upper surface setting test electrode 31, and in diffusion chamber 23, the second zirconium oxide is cast under substrate
Reference electrode 32 is arranged in surface, and the second zirconium oxide curtain coating substrate is provided with electrode leadout hole, and reference electrode 32 is filled by through-hole
It is connected with second pin 14.Reference cell 3 needs to apply it in working sensor the pump electric current of 7~15 μ A as test ginseng
Than.Heating layer 4 is made of the first aluminium oxide curtain coating substrate, the second aluminium oxide curtain coating substrate and heater 41, in the second aluminium oxide
The upper surface of curtain coating substrate first passes through silk-screen printing and forms heater 41, and heating voltage is cast substrate reverse side by the second aluminium oxide
Heater pin 42 and through-hole introduce.First aluminium oxide curtain coating substrate is in order to avoid the of heater 41 and reference cell 3
Zirconium dioxide curtain coating substrate, which directly contacts, to be led to the short circuit of heater 41 and is arranged.
Embodiment 2:
A kind of production method of the automobile-used chip oxygen sensor of Novel double-battery type motor the following steps are included:
Step S1: zirconia ceramics slurry, aluminium oxide ceramics slurry and porous alumina ceramic slurry are prepared:
(1) by mass percentage by zirconium oxide, yttrium oxide, aluminium oxide 1, solvent, dispersing agent, binder, plasticizer: 40:
6:10:35:1:5:3 carries out ingredient, and then ball milling forms zirconia ceramics slurry；
By mass percentage by aluminium oxide 1, aluminium oxide 2, sintering aid, solvent, dispersing agent, binder, plasticizer: 40:
4:4:40:2:5:5 carries out ingredient, and then ball milling forms aluminium oxide ceramics slurry；
By mass percentage by aluminium oxide 1, aluminium oxide 2, carbon dust, solvent, dispersing agent, binder, plasticizer: 25:8:7:
50:1:5:4 carries out ingredient, and then ball milling forms porous alumina ceramic slurry；
The wherein particle size range (D50) of aluminium oxide 1: 0.1 μm, specific surface area range: 10m2/g；The partial size model of aluminium oxide 2
It encloses (D50): 5 μm, specific surface area range: 40m2/g；
Step S2: three of the above ceramic slurry is cast respectively using the tape casting, oxidation zirconium base is prepared respectively
Piece, alumina substrate and porous oxidation aluminium substrate, wherein the thickness of all substrates is 0.1mm, then using mechanical punching
Mode charges and attacks location hole and through-hole in zirconium oxide substrate and alumina base on piece；
Step S3: by mass percentage by platinum powder, carbon: 70:30 mixing adds organic solvent and pump oxygen electrode is prepared
Slurry；By mass percentage by zirconium oxide, carbon: 70:30 mixing adds organic solvent and diffusion barrier slurry is prepared；
Step S4: preparing porous and external protection, pump oxygen cell, reference cell and heating layer, specifically include,
Using the upper surface printing pump oxygen dispatch from foreign news agency grade and conducting wire for being screen printed onto pump oxygen cell, then prints and pump in lower surface
Electrode and conducting wire in oxygen, pump oxygen internal and external electrode are filled from porous and external protection upper surface by through-hole and are drawn, the electricity in pump oxygen
The extremely upper an equal amount of carbon pastes of printing, diffusion barrier slurry is printed in electrode two sides in pump oxygen, and the print thickness of diffusion barrier should be with
The thickness that oxygen electrode is pumped plus carbon pastes is identical；
Test electrode is printed using the upper surface for being screen printed onto reference cell, prints reference electrode in lower surface.Equally
Two electrodes are filled from porous and external protection upper surface by through-hole and are drawn；
Heater is printed using the upper surface that the lower aluminium oxide for being screen printed onto heating layer is cast substrate, while carrying out through-hole
Filling and the printing of its lower surface heater pin.So far, porous and external protection, pump oxygen cell, reference cell and heating layer
All prepare；
Step S5: by porous and external protection, pump oxygen cell, reference cell, heating layer in accordance with the order from top to bottom into
Then row lamination is compressed into entirety using static pressure such as warm water, ceramic block is cut into chip green compact using machine cuts；
Step S6: chip green compact are put into load bearing board, and load bearing board is put into air circulating oven and carries out slow dumping, row
Glue maximum temperature is 700 DEG C；The chip green compact of drained glue are put into sintering furnace and carry out 1350 DEG C of sintering, form product.
Embodiment 3:
Step S1: zirconia ceramics slurry, aluminium oxide ceramics slurry and porous alumina ceramic slurry are prepared:
By mass percentage by zirconium oxide, yttrium oxide, aluminium oxide 1, solvent, dispersing agent, binder, plasticizer: 48:6.5:
9:25:2.5:4.5:4.5 carries out ingredient, and then ball milling forms zirconia ceramics slurry；
By mass percentage by aluminium oxide 1, aluminium oxide 2, sintering aid, solvent, dispersing agent, binder, plasticizer:
48.5:3:5:35:1.5:4:3 carrying out ingredient, then ball milling forms aluminium oxide ceramics slurry；
By mass percentage by aluminium oxide 1, aluminium oxide 2, carbon dust, solvent, dispersing agent, binder, plasticizer: 33.5:4:
4:48:1.5:6:3 carries out ingredient, and then ball milling forms porous alumina ceramic slurry；The wherein particle size range of aluminium oxide 1
(D50): 0.8 μm, specific surface area range: 6m2/g；The particle size range (D50) of aluminium oxide 2: 2 μm, specific surface area range: 60m2/g；
Step S2: three of the above ceramic slurry is cast respectively using the tape casting, oxidation zirconium base is prepared respectively
Piece, alumina substrate and porous oxidation aluminium substrate, wherein the thickness of all substrates is 0.2mm, then using mechanical punching
Mode charges and attacks location hole and through-hole in zirconium oxide substrate and alumina base on piece；
Step S3: by mass percentage by platinum powder, carbon: 85:15 mixing adds organic solvent and pump oxygen electrode is prepared
Slurry；By mass percentage by zirconium oxide, carbon: 55:45 mixing adds organic solvent and diffusion barrier slurry is prepared；Step
S4, step S5 are in the same manner as in Example 2；Step S6: chip green compact are put into load bearing board, and load bearing board is put into air circulating oven
Interior to carry out slow dumping, dumping maximum temperature is 800 DEG C；The chip green compact of drained glue are put into 1500 DEG C of height of progress in sintering furnace
Temperature sintering, forms product.
Embodiment 4:
Step S1: zirconia ceramics slurry, aluminium oxide ceramics slurry and porous alumina ceramic slurry are prepared:
By mass percentage by zirconium oxide, yttrium oxide, aluminium oxide 1, solvent, dispersing agent, binder, plasticizer: 50:4.5:
5:29.5:3:3:5 carries out ingredient, and then ball milling forms zirconia ceramics slurry；
By mass percentage by aluminium oxide 1, aluminium oxide 2, sintering aid, solvent, dispersing agent, binder, plasticizer: 50:
2:2:38:1:3:4 carries out ingredient, and then ball milling forms aluminium oxide ceramics slurry；
By mass percentage by aluminium oxide 1, aluminium oxide 2, carbon dust, solvent, dispersing agent, binder, plasticizer: 35:6:8:
40:2:7:2 carries out ingredient, and then ball milling forms porous alumina ceramic slurry；
The wherein particle size range (D50) of aluminium oxide 1: 0.4 μm, specific surface area range: 12m2/g；The partial size model of aluminium oxide 2
It encloses (D50): 3.5 μm, specific surface area range: 20m2/g；
Step S2: three of the above ceramic slurry is cast respectively using the tape casting, oxidation zirconium base is prepared respectively
Piece, alumina substrate and porous oxidation aluminium substrate, wherein the thickness of all substrates is 0.3mm, then using mechanical punching
Mode charges and attacks location hole and through-hole in zirconium oxide substrate and alumina base on piece；
Step S3: by mass percentage by platinum powder, carbon: 78:22 mixing adds organic solvent and pump oxygen electrode is prepared
Slurry；By mass percentage by zirconium oxide, carbon: 40:60 mixing adds organic solvent and diffusion barrier slurry is prepared；
Step S4 is same as Example 2 to step S5, step S6: chip green compact being put into load bearing board, load bearing board is put
Enter and carry out slow dumping in air circulating oven, dumping maximum temperature is 600 DEG C；The chip green compact of drained glue are put into sintering furnace
1450 DEG C of high temperature sinterings are carried out, product is formed.
The formula rate used in embodiment 2-4, be because structure in use two kinds of materials of aluminium oxide and zirconium oxide,
It is designed to match mutual shrinking percentage, contraction rate and thermal expansion coefficient.
Although reference be made herein to invention has been described for explanatory embodiment of the invention, and above-described embodiment is only this hair
Bright preferable embodiment, embodiment of the present invention are not limited by the above embodiments, it should be appreciated that those skilled in the art
Member can be designed that a lot of other modification and implementations, these modifications and implementations will fall in principle disclosed in the present application
Within scope and spirit.
Claims (10)
1. a kind of automobile-used chip oxygen sensor of Novel double-battery type motor, which is characterized in that more by what is successively stacked from top to bottom
Hole and external protection, pump oxygen cell, reference cell and heating layer are sintered, wherein
Pump oxygen cell: including the first substrate, the pump oxygen external electrode of first substrate upper surface is set and is arranged in the first base
Electrode in the pump oxygen of piece lower surface, the pump oxygen external electrode are covered by described porous and external protection；
Reference cell: including the second substrate, the test electrode of second substrate upper surface is set and is arranged in the second substrate
The reference electrode of lower surface；
Diffusion barrier and diffusion chamber are provided between pump oxygen cell and the reference cell, the diffusion chamber is located at first substrate
And second between substrate, and diffusion barrier is provided between the first substrate and the two sides and diffusion chamber of the second substrate, tail gas is formed and enters
The channel of diffusion chamber, electrode and test electrode are in diffusion chamber in the pump oxygen.
2. a kind of automobile-used chip oxygen sensor of Novel double-battery type motor according to claim 1, which is characterized in that described
Porous and external protection is made of alumina substrate, and first substrate and the second substrate are made of zirconium oxide substrate.
3. a kind of automobile-used chip oxygen sensor of Novel double-battery type motor according to claim 2, which is characterized in that described
Porous and external protection includes the alumina layer made of alumina substrate, further includes porous made of porous oxidation aluminium substrate
Alumina layer, the porous alumina layer and alumina layer are stitched together, and are respectively overlay in the both ends of first substrate, institute
State the through-hole and pin for being provided on alumina layer and drawing for signal.
4. a kind of automobile-used chip oxygen sensor of Novel double-battery type motor according to claim 1, which is characterized in that described
Heating layer is made of the first aluminium oxide curtain coating substrate, the second aluminium oxide curtain coating substrate and heater, and the heater uses silk screen
It is printed between the lower surface of the first aluminium oxide curtain coating substrate and the upper surface of the second aluminium oxide curtain coating substrate, described second
The heater pin for introducing heating voltage is provided on aluminium oxide curtain coating substrate.
5. a kind of automobile-used chip oxygen sensor of Novel double-battery type motor described in any one of -4 according to claim 1,
It is characterized in that, the diffusion chamber is in the cavity formed between electrode and test electrode in pump oxygen, and the cavity is prepared by carbon dust
Carbon after being sintered on electrode in pump oxygen is then screen printed at screen printing sizing agent to volatilize to be formed.
6. a kind of automobile-used chip oxygen sensor of Novel double-battery type motor according to claim 1, which is characterized in that described
The automobile-used chip oxygen sensor of Novel double-battery type motor is used as using internal reference ratio refers to atmosphere, and pump electric current is 7 μ A-15 μ A.
7. a kind of preparation method of the automobile-used chip oxygen sensor of Novel double-battery type motor characterized by comprising
Step S1: being prepared zirconium oxide substrate, alumina substrate and porous oxidation aluminium substrate, then using the side of mechanical punching
Formula charges and attacks location hole and through-hole in zirconium oxide substrate and alumina base on piece；
Step S2: preparation pump oxygen electrode slurry and diffusion barrier slurry；
Step S3: preparing porous and external protection, pump oxygen cell, reference cell and heating layer, specifically include,
Through-hole filling and screen printing electrode pin are carried out on porous and external protection；
Oxygen dispatch from foreign news agency grade and conducting wire are pumped in the upper surface silk-screen printing of the first substrate, pumps oxygen in the lower surface silk-screen printing of the first substrate
Interior electrode and conducting wire pump electrode in oxygen, pump oxygen external electrode is filled from porous and external protection upper surface electrode by through-hole and drawn
Foot is drawn；
An equal amount of carbon pastes of silk-screen printing on electrode in pump oxygen, the electrode two sides silk-screen printing diffusion barrier slurry in pump oxygen
The print thickness of material, diffusion barrier should be identical plus the thickness of carbon pastes as pump oxygen electrode；
Electrode is tested in the upper surface silk-screen printing of the second substrate, in the lower surface silk-screen printing reference electrode of the second substrate, is surveyed
Try electrode, reference electrode is filled from porous and external protection upper surface by through-hole and drawn；
Heater is formed in the upper surface silk-screen printing of the second aluminium oxide curtain coating substrate, while carrying out through-hole filling and lower surface
The printing of heater pin；
Step S4: porous and external protection, pump oxygen cell, reference cell, heating layer are folded in accordance with the order from top to bottom
Layer, is then compressed into entirety using static pressure such as warm water, ceramic block is cut into chip green compact using machine cuts；
Step S5: chip green compact are put into load bearing board, and load bearing board is put into air circulating oven and carries out slow dumping, and dumping is most
High-temperature is 600~800 DEG C；The chip green compact of drained glue are put into sintering furnace, are sintered at 1350 DEG C~1500 DEG C, shape
At product.
8. a kind of preparation method of automobile-used chip oxygen sensor of Novel double-battery type motor according to claim 7, special
Sign is that the step S1 is specifically included:
Step S11: zirconia ceramics slurry, aluminium oxide ceramics slurry and porous alumina ceramic slurry are prepared；
Step S12: the tape casting is respectively adopted in zirconia ceramics slurry, aluminium oxide ceramics slurry and porous alumina ceramic slurry
Zirconium oxide substrate, alumina substrate and porous oxidation aluminium substrate is made.
9. a kind of preparation method of automobile-used chip oxygen sensor of Novel double-battery type motor according to claim 8, special
Sign is that the step S11 is specifically included:
Step S111: by mass percentage by zirconium oxide, yttrium oxide, aluminium oxide 1, solvent, dispersing agent, binder, plasticizer:
(40~50): (4.5~6.5): (5~10): (25~35): (1~3): (3~5): (3~5) carry out ingredient, then ball milling shape
At zirconia ceramics slurry；
Step S112: aluminium oxide 1, aluminium oxide 2, sintering aid, solvent, dispersing agent, binder, plasticizer are pressed into quality percentage
Than: (40~50): (2~4): (2~5): (30~40): (1~2): (3~5): (3~5) carry out ingredient, and then ball milling is formed
Aluminium oxide ceramics slurry；
Step S113: by mass percentage by aluminium oxide 1, aluminium oxide 2, carbon dust, solvent, dispersing agent, binder, plasticizer: (25
~35): (4~8): (4~8): (40~50): (1~2): (5~7): (2~4) carry out ingredient, and then ball milling forms porous oxygen
Change aluminium ceramic slurry；
The wherein particle size range (D50) of aluminium oxide 1: 0.1~0.8 μm, specific surface area range: 6~12m2/g；The partial size of aluminium oxide 2
Range (D50): 2~5 μm, specific surface area range: 20~60m2/g。
10. a kind of preparation method of automobile-used chip oxygen sensor of Novel double-battery type motor according to claim 7, special
Sign is that the step S2 is specifically included: by mass percentage by platinum powder, carbon: (70~85): (15~30) mixing adds
Pump oxygen electrode slurry is prepared in organic solvent；By mass percentage by zirconium oxide, carbon: (40~70): (30~60) mixing, then
Organic solvent is added, diffusion barrier slurry is prepared.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810574329.7A CN108956741B (en) | 2018-06-06 | 2018-06-06 | Preparation method of double-battery type chip oxygen sensor for motorcycle |
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| CN201810574329.7A CN108956741B (en) | 2018-06-06 | 2018-06-06 | Preparation method of double-battery type chip oxygen sensor for motorcycle |
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| CN108956741A true CN108956741A (en) | 2018-12-07 |
| CN108956741B CN108956741B (en) | 2020-05-01 |
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| CN201810574329.7A Active CN108956741B (en) | 2018-06-06 | 2018-06-06 | Preparation method of double-battery type chip oxygen sensor for motorcycle |
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| 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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