CN107219276A - A kind of lambda sensor comprising tooth plate transition zone and its preparation technology - Google Patents
A kind of lambda sensor comprising tooth plate transition zone and its preparation technology Download PDFInfo
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Abstract
The invention discloses a kind of lambda sensor for including tooth plate transition zone, including signals layer, intermediate layer, transition zone and the zone of heating that stacked above one another is set；Transition zone includes the first zirconium oxide green sheet, the first tooth plate layer, insulating trip, the second tooth plate layer and the second zirconium oxide green sheet that stacked above one another is set, and the first zirconium oxide green sheet is disposed adjacent with signals layer.Transition zone is set between intermediate layer and zone of heating, it have matched the contraction of each layer, the coefficient of expansion, reduce the probability that the lambda sensor semi-finished product obtained after each stacking pressure ftracture in sintering process or during product use, extend the service life of sensor, transition zone also acts the effect of insulation simultaneously, and transition layer structure is simple, it is easy to manufacture, suitable for industrialized mass production.The preparation technology of the lambda sensor is also disclosed, compared with existing gradient laminates transition layer process, preparation technology has been obtained significantly simplifying, and technique productions difficulty is significantly reduced, and product yield yield is obviously improved.
Description
Technical field
The invention belongs to lambda sensor technical field, it is related to a kind of lambda sensor comprising transition zone and its preparation technology,
Relate in particular to a kind of lambda sensor comprising tooth plate transition zone and its preparation technology.
Background technology
Automotive oxygen sensor is to feed back to engine control by detecting the oxygen content in tail gas, and being translated into electric signal
Unit processed, so that the key device of engine air-fuel ratio is accurately controlled, so as to enable the engine to realize with excess air factor
For the closed-loop control of target, it is ensured that three-way catalytic converter is to the hydrocarbon in exhaust, carbon monoxide and oxynitrides
Three kinds of pollutants have the transformation efficiency of maximum.
Lambda sensor is usually heated sensors, can be divided into hot type tubular oxygen sensor and heating according to its structure
What is applied on type chip oxygen sensor, current automobile is chip oxygen sensor mostly, and its main preparation method is flow casting molding system
Standby sensor substrate, signal line and heating line are obtained by typography, and oxygen sensor chip is obtained after laminating sintering.
There are the following problems for this method：Green compact after laminating are in sintering process, the constriction coefficient between layers of material
It is inconsistent, cause that oxygen sensor chip is easy to crack, make product failure, meanwhile, if lambda sensor runs into temperature in the work environment
Each layer expansion rate is mismatched in the situation of acute variation, lambda sensor, is caused lambda sensor to ftracture, is reduced the use of sensor
Life-span.
In order to solve the above-mentioned technical problem, Chinese patent 201410324058.1 discloses a kind of sheet type sensor and its system
Preparation Method, it includes signals layer, air duct supporting layer and the zone of heating of stacking, and zone of heating includes the First Transition being stacked
Layer, the first insulating barrier, heating electrode, the second insulating barrier, the second transition zone, heating substrate, First Transition layer and the 5th transition zone
It is symmetrical arranged, while First Transition layer, the material of the second transition zone are consistent with other layers of property, solve each layer matching and ask
Topic, but First Transition layer, the second transition zone are constituted by 5 layers of Gradient Film, complicated, fabrication processing length, difficulty are big,
Product yield is low.
The content of the invention
Therefore, the present invention will exactly solve above-mentioned technical problem, thus propose it is a kind of it is simple in construction, be readily produced making and
The high lambda sensor comprising tooth plate transition zone of product yield and its preparation technology.
In order to solve the above technical problems, the technical scheme is that：
The invention provides a kind of lambda sensor for including tooth plate transition zone, the lambda sensor is set including stacked above one another
Be used for detect and transmitting telecommunication number signals layer, intermediate layer, transition zone and zone of heating；The transition zone is set including stacked above one another
The first zirconium oxide green sheet, the first tooth plate layer, insulating trip, the second tooth plate layer and the second zirconium oxide green sheet put, described first
Zirconium oxide green sheet is disposed adjacent with the intermediate layer.
Preferably, the first tooth plate layer and the second tooth plate layer are convex including the first raised line being arranged alternately and second
Bar, the spacing of adjacent first raised line and the second raised line is 0.025-0.5mm.
Preferably, the material of first raised line is aluminum oxide, the material of second raised line is yttrium stabilized chlorine
Zirconium and/or aluminum oxide.
Preferably, the intermediate layer includes packed layer and the 3rd zirconium oxide green sheet being stacked, the packed layer
It is disposed adjacent with the signals layer, the 3rd zirconium oxide green sheet is disposed adjacent with the first zirconium oxide green sheet.
Preferably, the signals layer includes signal substrate, a surface of the signal substrate is provided with the first signal
Electrode, the first signal electrode surface is provided with electrode protecting layer, and the surface relative with first signal electrode is provided with
Secondary signal electrode, the second electrode is disposed adjacent with the packed layer, and the signal substrate is further opened with signal via, institute
The first signal electrode, secondary signal electrode is stated to connect by the signal via；Air duct, institute are offered in the packed layer
The size for stating air duct is less than the size of secondary signal electrode.
Preferably, the zone of heating includes heating substrate, the heating substrate is close to the second zirconium oxide green sheet
One side be provided with heating electrode, the relative one side of the heating electrode is provided with heating pin, the heating substrate is also set
Heating through hole is equipped with, the heating electrode is connected with the heating pin by heating through hole.
Preferably, the second raised line material is the mixture of yttrium-stabile zirconium dioxide and aluminum oxide, the mixture
In, the mass percent of the yttrium-stabile zirconium dioxide is 20-99%；The signal substrate, the first zirconium oxide green sheet, second
Zirconium oxide green sheet, the 3rd zirconium oxide green sheet, packed layer, the material of heating substrate are yttrium stable zirconium oxide, the insulation
Piece material includes aluminum oxide.
The present invention also provides a kind of preparation technology of the lambda sensor comprising tooth plate transition zone, comprises the following steps：
A, making zone of heating, are made on heating substrate after heating through hole, and heating through hole slurry is printed in heating through hole
Layer, heating electrode and heating pin, the pulp layer, heating electrode and heating pin are made in the positive and negative of heating substrate respectively
It is Pt；
B, making signals layer, make signal via on signal substrate, the printing signal through hole pulp layer in signal via,
The first signal electrode and secondary signal electrode are made respectively in the positive and negative of signal substrate, and are made on the first signal electrode surface
Electrode protecting layer；
C, the first tooth plate layer is made on the surface of the first zirconium oxide green sheet, by aluminum oxide and yttrium-stabile zirconium dioxide and/
Or aluminum oxide is alternately printed in the first zirconium oxide green sheet surface, similarly, second is made on the surface of the second zirconium oxide green sheet
Tooth plate layer；
D, packed layer laminated in the 3rd zirconium oxide green sheet, obtain intermediate layer；
E, sequentially by signals layer, intermediate layer, making have the first tooth plate layer the first zirconium oxide green sheet, insulating trip, making
There are the second zirconium oxide green sheet of the second tooth plate layer, zone of heating to laminate, obtain chip green compact；
F, the sintering chip green compact, produce lambda sensor.
Preferably, also including preparing signal substrate, the first zirconium oxide green sheet, the second zirconium oxide green sheet, the 3rd oxygen
Change the process of zirconium green sheet, heating substrate and packed layer：First in parts by weight, by 100 parts of yttrium stable zirconium oxide powder and 32-
After 40 parts of alcohol, 32-40 parts of toluene and 1-3 parts of fish oil grinding distribution 11-13h, add 13-15 parts of polyvinyl butyrals, 7-9 parts
BBP(Butyl Benzyl Phthalate and 5-8 parts of polyethylene glycol grinding 9-11h, obtain casting slurry, blank are produced after drying.
Preferably, the raw material of the heating through hole pulp layer, heating electrode and heating pin is that platinum is starched, its viscosity is
60-90Pas, surface resistance is 35-45m Ω/square；The signal via pulp layer, the first signal electrode, secondary signal electricity
The raw material of pole is the mixture of porous platinum slurry and carbon dust, and its viscosity is 50-90Pas, and surface resistance is 20-40m Ω/square,
The electric motor protecting layer raw material is the mixture of porous zirconia slurry and carbon dust, and viscosity is 300-500Pas；The sintering
Temperature be 1400-1500 DEG C, sintering time is 1.8-2.2h.
The above-mentioned technical proposal of the present invention has advantages below compared with prior art：
(1) lambda sensor of the present invention for including tooth plate transition zone, including stacked above one another set be used for detect and
Transmit signals layer, intermediate layer, transition zone and the zone of heating of voltage signal；The transition zone includes the first oxygen that stacked above one another is set
Change zirconium green sheet, the first tooth plate layer, insulating trip, the second tooth plate layer and the second zirconium oxide green sheet, the first zirconium oxide green compact
Piece is disposed adjacent with the signals layer.Transition zone is set between intermediate layer and zone of heating, and it have matched the contraction of each layer, expansion
Coefficient, reduce that obtained lambda sensor semi-finished product after each stacking pressure ftracture in sintering process or during product use is several
Rate, extends the service life of sensor, while transition zone also acts the effect of insulation, and transition layer structure is simple, easily
In the manufacturing, suitable for industrialized mass production.
(2) the lambda sensor preparation technology of the present invention for including tooth plate transition zone, makes zone of heating, signal respectively
Behind layer, tooth plate transition zone, intermediate layer, from it is upper it is straight under each stacking pressure and then sintering are produced into lambda sensor in order.With it is existing
Gradient laminates transition layer process and compared, and preparation technology has been obtained significantly simplifying, and technique productions difficulty is significantly reduced, and product yield is good
Rate is obviously improved.
Brief description of the drawings
In order that present disclosure is more likely to be clearly understood, specific embodiment and combination below according to the present invention
Accompanying drawing, the present invention is further detailed explanation, wherein
Fig. 1 is the lambda sensor structural representation for including tooth plate transition zone described in the embodiment of the present invention；
Fig. 2 is the lambda sensor sectional view for including tooth plate transition zone described in the embodiment of the present invention.
Reference is expressed as in figure：1- the first zirconium oxide green sheets；The tooth plates of 2- first layer；3- insulating trips；The teeth of 4- second
Flaggy；5- the second zirconium oxide green sheets；6- signal substrates；The signal electrodes of 7- first；8- electrode protecting layers；9- secondary signals electricity
Pole；10- signal vias；11- packed layers；The zirconium oxide green sheets of 12- the 3rd；13- air ducts；14- heats substrate；15- is heated
Electrode；16- heats pin；17- heats through hole.
Embodiment
Embodiment 1
The present embodiment provides a kind of lambda sensor for including tooth plate transition zone, and as shown in Figure 1-2, the lambda sensor is by upper
Including being used for of setting of stacked above one another signals layer, intermediate layer, transition zone and the zone of heating of voltage signal are detected and transmit to lower, its
In, the transition zone from top to bottom include stacked above one another set the first zirconium oxide green sheet 1, the first tooth plate layer 2, insulating trip 3,
Second tooth plate layer 4 and the second zirconium oxide green sheet 5, the first zirconium oxide green sheet 1 are disposed adjacent with intermediate layer.Specifically, it is described
First tooth plate the 2, second tooth plate of layer layer 4 is by convex along parallel the first raised line being arranged alternately of tooth plate layer length direction and second
Bar, the material of first raised line is aluminum oxide, and the material of the second raised line is 5% yttrium-stabile zirconium dioxide (5YSZ), adjacent two
The spacing of the raised line of bar first and the second raised line is that 0.2mm, thickness are 0.05mm.The first zirconium oxide green sheet 1, second is aoxidized
Zirconium green sheet 5 is the sheet material suppressed by 5% yttrium-stabile zirconium dioxide (5Y5Z), and thickness is 0.2mm, the insulating trip 3
Primary raw material is aluminum oxide, and thickness is 0.1mm.
The signals layer includes signal substrate 6, and a surface of the signal substrate 6 is provided with the first signal electrode 7, this
In embodiment, as illustrated, the first signal electrode 7 is arranged at the upper surface of signal substrate 6, the surface of the first signal electrode 7 is also
Electrode protecting layer 8 is provided with, the lower surface of signal substrate 6 is provided with secondary signal electrode 9, secondary signal electrode 9 and intermediate layer
It is disposed adjacent, signal via 10 is offered on signal substrate 6, the first signal electrode 7, secondary signal electrode 9 passes through signal via
It is printed with 10 connections, signal via 10 and plays the porous platinum slurry of conducting effect and the mixture of carbon dust, the first signal electrode 7,
Secondary signal electrode 9 is also starched by porous platinum and the mixture printing of carbon dust is formed, and the material of the signal substrate 6 is 5YSZ, thick
Spend for 0.2mm, the material of electrode protecting layer 8 is porous zirconia slurry and the mixture of carbon dust.
The intermediate layer includes the zirconium oxide green sheet 12 of packed layer 11 and the 3rd being from top to bottom stacked, the filling
Layer 11 is disposed adjacent with signals layer, and the material of the zirconium oxide green sheet 12 of packed layer 11 and the 3rd is 5YSZ, the thickness of packed layer
Spend for 0.1mm, the thickness of the 3rd zirconium oxide green sheet 12 is to offer air duct 13, the air on 0.2mm, packed layer 11
Length direction of the passage 13 along packed layer 11 is opened up, and its length and width size is less than secondary signal electrode 9.
The zone of heating includes heating substrate 14, and the heating substrate 14 is close to the one of the second zirconium oxide green sheet 5
Face (upper surface) is provided with heating electrode 15, and the one side (lower surface) relative with the heating electrode is provided with heating pin 16,
The material of the heating substrate 14 is 5YSZ, and thickness is 0.2mm, and heating electrode 15, heating pin 16 are made by platinum slurry printing,
It is additionally provided with heating substrate 14 and heats through hole 17, the platinum slurry for playing conducting effect is printed with heating through hole 17, so as to will adds
Thermode 15 and heating pin 16 are connected.
The integral thickness of the lambda sensor is not more than 1.2mm,
The present embodiment also provides a kind of lambda sensor preparation technology for including tooth plate transition zone, and it comprises the following steps：
A, making zone of heating, prepare heating substrate 14, take 100g5YSZ powder, be placed in ball grinder, add 32g wine first
After essence, 32g toluene and 1g fish oil, ball milling disperses 11h, then adds 13g polyvinyl butyrals (PVB), 7g phthalic acid fourths
Benzyl ester (BBP) and 5g PEG-4000s, ball milling 9h obtain the casting slurry of solid content 52.1%, by the slurry in casting machine
Upper curtain coating, produces curtain coating blank, blank is cut into thickness 0.2mm produces signal substrate 6, the first zirconium oxide green sheet after drying
1st, the second zirconium oxide green sheet 5, the 3rd zirconium oxide green sheet 12 and heating substrate 14, are drilled with the predeterminated position of heating substrate 14
Through hole 17 is heated, the printing platinum pulp layer in heating through hole 17 is made in front (upper surface) the printing platinum slurry of heating substrate 14 and added
Thermode 15, heating pin 16 is made in the heating reverse side of substrate 14 (lower surface) printing platinum slurry, wherein, platinum slurry viscosity is 60Pa
S, surface resistance is 35m Ω/square.
B, making signals layer, are drilled with signal via 10 in the predeterminated position of obtained signal substrate 6, are printed in signal via
Brush is mixed with the porous platinum slurry of carbon dust, and the porous platinum slurry for being mixed with carbon dust in front (upper surface) printing of signal substrate 6 is made first
Secondary signal electrode 9 is made in signal electrode 7, the porous platinum slurry for being mixed with carbon dust in reverse side (lower surface) printing of signal substrate 6,
Electrode protecting layer 8 is made in the surface printing porous zirconia of first signal electrode 7 slurry, wherein the porous platinum slurry viscosity for being mixed with carbon dust is
50Pas, surface resistance is 20m Ω/square, and the viscosity of porous zirconia slurry is 300Pas.
C, make transition zone, the first zirconium oxide green sheet 1 surface make the first tooth plate layer 2, by alumina slurry,
5YSZ slurry alternating parallels are printed in the surface of the first zirconium oxide green sheet 1, respectively obtain the first raised line and the second raised line, and first is convex
Bar, the sectional view of the second raised line are rectangle, and the second tooth plate layer 4 is similarly made on the surface of the second zirconium oxide green sheet 5.
D, the curtain coating blank obtained in step a is cut into thickness 0.1mm, produces packed layer, cut on the surface of packed layer 11
Air duct 13 is cut out, and is laminated in the 3rd zirconium oxide green sheet 12, obtaining pressure in intermediate layer, lamination process is
10MPa, temperature is 70 DEG C, preheats 5min, and pressurize 10min produces intermediate layer.
E, insulating trip is prepared, weigh 100g Al2O3Powder, is placed in ball grinder, then adds 38g alcohol, 38g toluene
With 2g fish oil, after ball milling is scattered 12 hours, add behind 15g PVB, 10g BBP and 5g PEG -400, ball milling 10 hours is obtained
Solid content is 47.6% casting slurry, and slurry is cast on casting machine, can obtain being cast green compact after drying, green compact are cut into
Thickness 0.1mm, produces insulating trip, the first zirconium oxide green sheet that signals layer, intermediate layer, making are sequentially had to the first tooth plate layer 2
1st, insulating trip 3, making have the second zirconium oxide green sheet 5 of the second tooth plate layer 4, zone of heating to laminate, and obtain chip green compact, wherein the
Binary signal electrode 9 is contacted with packed layer 11, and the bottom surface of the second zirconium oxide green sheet 5 is contacted with heating electrode 15, in lamination process,
Pressure is 25MPa, and temperature is 75 DEG C, preheats 5min, pressurize 25min produces chip green compact.
F, the chip green compact 2.2h is sintered at 1400 DEG C, produce lambda sensor.
Embodiment 2
The present embodiment provides a kind of lambda sensor for including tooth plate transition zone, and its structure is substantially the same manner as Example 1, different
Part is that the material of the second raised line is aluminum oxide, and signal substrate 6, the thickness of heating substrate 14 are 0.4mm.
The present embodiment also provides a kind of lambda sensor preparation technology for including tooth plate transition zone, and it comprises the following steps：
A, making zone of heating, prepare heating substrate 14, take 100g5YSZ powder, be placed in ball grinder, add 40g wine first
After essence, 40g toluene and 3g fish oil, ball milling disperses 13h, then adds 15g polyvinyl butyrals (PVB), 9g phthalic acid fourths
Benzyl ester (BBP) and 8g PEG-4000s, ball milling 11h obtain the casting slurry of solid content 51.5%, by the slurry in casting machine
Upper curtain coating, curtain coating blank is produced after drying, and blank is cut into thickness 0.4mm produces signal substrate 6 and heating substrate 14, thick
Degree be 0.2mm for the first zirconium oxide green sheet 1, the second zirconium oxide green sheet 5, the 3rd zirconium oxide green sheet 12, in heating base
The predeterminated position of plate 14 is drilled with heating through hole 17, platinum pulp layer is printed in heating through hole 17, in the front (upper table of heating substrate 14
Face) the obtained heating electrode 15 of printing platinum slurry, the obtained heating pin 16 of the reverse side of substrate 14 (lower surface) printing platinum slurry is being heated, its
In, platinum slurry viscosity is 90Pas, and surface resistance is 45m Ω/square.
B, making signals layer, are drilled with signal via 10 in the predeterminated position of obtained signal substrate 6, are printed in signal via
Brush is mixed with the porous platinum slurry of carbon dust, and the porous platinum slurry for being mixed with carbon dust in front (upper surface) printing of signal substrate 6 is made first
Secondary signal electrode 9 is made in signal electrode 7, the porous platinum slurry for being mixed with carbon dust in reverse side (lower surface) printing of signal substrate 6,
Electrode protecting layer 8 is made in the surface printing porous zirconia of first signal electrode 7 slurry, wherein the porous platinum slurry viscosity for being mixed with carbon dust is
90Pas, surface resistance is 40m Ω/square, and the viscosity of porous zirconia slurry is 500Pas.
C, making transition zone, the first tooth plate layer 2 is made on the surface of the first zirconium oxide green sheet 1, alumina slurry is handed over
The surface of the first zirconium oxide green sheet 1 is printed in for parallel, the first raised line and the second raised line is respectively obtained, it is the first raised line, second convex
The sectional view of bar is rectangle, and the second tooth plate layer 4 is similarly made on the surface of the second zirconium oxide green sheet 5.
D, the curtain coating blank that step a is obtained is cut into thickness 0.1mm, packed layer produced, in the cutting of the surface of packed layer 11
Go out air duct 13, and laminated in the 3rd zirconium oxide green sheet 12, obtaining pressure in intermediate layer, lamination process and be
10MPa, temperature is 70 DEG C, preheats 5min, and pressurize 10min produces intermediate layer.
E, insulating trip is prepared, weigh 100g Al2O3Powder, is placed in ball grinder, then adds 38g alcohol, 38g toluene
With 2g fish oil, after ball milling is scattered 12 hours, add behind 15g PVB, 10g BBP and 5g PEG -400, ball milling 10 hours is obtained
Solid content is 47.6% casting slurry, and slurry is cast on casting machine, can obtain being cast green compact after drying, green compact are cut into
Thickness 0.1mm, produces insulating trip, the first zirconium oxide green sheet that signals layer, intermediate layer, making are sequentially had to the first tooth plate layer 2
1st, insulating trip 3, making have the second zirconium oxide green sheet 5 of the second tooth plate layer 4, zone of heating to laminate, and obtain chip green compact, wherein the
Binary signal electrode 9 is contacted with packed layer 11, and the bottom surface of the second zirconium oxide green sheet 5 is contacted with heating electrode 15, in lamination process,
Pressure is 25MPa, and temperature is 75 DEG C, preheats 5min, pressurize 25min produces chip green compact.
F, the chip green compact 2h is sintered at 1450 DEG C, produce lambda sensor.
Embodiment 3
The present embodiment provides a kind of lambda sensor for including tooth plate transition zone, and its structure is substantially the same manner as Example 1, different
Part is that the material of the second raised line is 5YSZ and the mixture of aluminum oxide, wherein, 5YSZ mass percent is 80%, signal
Substrate 6, the thickness of heating substrate 14 are 0.4mm.
The present embodiment also provides a kind of lambda sensor preparation technology for including tooth plate transition zone, and it comprises the following steps：
A, making zone of heating, prepare heating substrate 14, take 100g5YSZ powder, be placed in ball grinder, add 35g wine first
After essence, 36g toluene and 2g fish oil, ball milling disperses 12h, then adds 14g polyvinyl butyrals (PVB), 8g phthalic acid fourths
Benzyl ester (BBP) and 6g PEG-4000s, ball milling 10h obtain the casting slurry of solid content 46.7%, by the slurry in casting machine
Upper curtain coating, curtain coating blank is produced after drying, and blank is cut into thickness 0.4mm produces signal substrate 6 and heating substrate 14, thick
Degree be 0.2mm for the first zirconium oxide green sheet 1, the second zirconium oxide green sheet 5, the 3rd zirconium oxide green sheet 12, in heating base
The predeterminated position of plate 14 is drilled with heating through hole 17, platinum pulp layer is printed in heating through hole 17, in the front (upper table of heating substrate 14
Face) the obtained heating electrode 15 of printing platinum slurry, the obtained heating pin 16 of the reverse side of substrate 14 (lower surface) printing platinum slurry is being heated, its
In, platinum slurry viscosity is 70Pas, and surface resistance is 40m Ω/square.
B, making signals layer, are drilled with signal via 10 in the predeterminated position of obtained signal substrate 6, are printed in signal via
Brush is mixed with the porous platinum slurry of carbon dust, and the porous platinum slurry for being mixed with carbon dust in front (upper surface) printing of signal substrate 6 is made first
Secondary signal electrode 9 is made in signal electrode 7, the porous platinum slurry for being mixed with carbon dust in reverse side (lower surface) printing of signal substrate 6,
Electrode protecting layer 8 is made in the surface printing porous zirconia of first signal electrode 7 slurry, wherein the porous platinum slurry viscosity for being mixed with carbon dust is
70Pas, surface resistance is 30m Ω/square, and the viscosity of porous zirconia slurry is 400Pas.
C, make transition zone, the first zirconium oxide green sheet 1 surface make the first tooth plate layer 2, by alumina slurry,
5YSZ and the mixture alternating parallel of aluminum oxide are printed in the surface of the first zirconium oxide green sheet 1, respectively obtain the first raised line and
Two raised lines, the first raised line, the sectional view of the second raised line are rectangle, similarly make the on the surface of the second zirconium oxide green sheet 5
Two tooth plates layer 4.
D, will curtain coating blank be cut into thickness 0.1mm, produce packed layer, air duct cut out on the surface of packed layer 11
13, and it is 10MPa to be laminated in the 3rd zirconium oxide green sheet 12, obtaining pressure in intermediate layer, lamination process, temperature is 70
DEG C, 5min is preheated, pressurize 10min produces intermediate layer.
E, insulating trip is prepared, weigh 100g Al2O3Powder, is placed in ball grinder, then adds 38g alcohol, 38g toluene
With 2g fish oil, after ball milling is scattered 12 hours, add behind 15g PVB, 10g BBP and 5g PEG -400, ball milling 10 hours is obtained
Solid content is 47.6% casting slurry, and slurry is cast on casting machine, can obtain being cast green compact after drying, green compact are cut into
Thickness 0.1mm, produces insulating trip, the first zirconium oxide green sheet that signals layer, intermediate layer, making are sequentially had to the first tooth plate layer 2
1st, insulating trip 3, making have the second zirconium oxide green sheet 5 of the second tooth plate layer 4, zone of heating to laminate, and obtain chip green compact, wherein the
Binary signal electrode 9 is contacted with packed layer 11, and the bottom surface of the second zirconium oxide green sheet 5 is contacted with heating electrode 15, in lamination process,
Pressure is 25MPa, and temperature is 75 DEG C, preheats 5min, pressurize 25min produces chip green compact.
F, the chip green compact 1.8h is sintered at 1500 DEG C, produce lambda sensor.
Experimental example
1st, the visual condition of the lambda sensor described in testing example 3：
Without buckling deformation and cracking situation after sintering.
2nd, the insulating properties of the lambda sensor described in testing example 3：
A 500V will be connected between lambda sensor and lead socket, 50/60Hz voltmeter constitutes loop, sensor is without hitting
Wear, discharge, flashover or sending the phenomenons such as crack sound.
3rd, the adding thermal resistance of the lambda sensor described in testing example 3：
Lambda sensor is arranged on comprehensive experiment table, startup power supply starts test, sets DC voltage as 12V, recorded
The normal temperature resistance value of adding thermal resistance, until heating temp is no longer raised, records the heating-up time, off voltage reads electricity immediately
Resistance is simultaneously recorded simultaneously with corresponding temperature.Repeated multiple times, test result is as shown in table 1.
Table 1
| Test event | Test result |
| Heating voltage (V) | 13 |
| Adding thermal resistance (25 DEG C) (Ω) | 9±1 |
| Warming temperature (DEG C) | 350 |
| Heat up power (W) | 7 |
4th, electric signal of the lambda sensor described in testing example 3 in tail gas environment：
Lambda sensor is arranged on simulated engine, equipment is opened, opening valve makes burning gases and air enter combustion
Burn room, ignition.When exhaust outlet exhaust temperature reaches 350 DEG C, lambda sensor output voltage signal is recorded, air-fuel is adjusted
Than observation signal waveform change, test result is as shown in table 2.
Table 2
It can be seen from the results above that the lambda sensor containing tooth plate transition zone described in the present embodiment has good thing
Rationality energy and electrical property, the startup time fast to vehicle exhaust corresponding speed are short.
Obviously, above-described embodiment is only intended to clearly illustrate example, and the not restriction to embodiment.It is right
For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of change or
Change.There is no necessity and possibility to exhaust all the enbodiments.And the obvious change thus extended out or
Among changing still in the protection domain of the invention.
Claims (10)
1. a kind of lambda sensor for including tooth plate transition zone, it is characterised in that the lambda sensor includes what stacked above one another was set
For detecting signals layer, intermediate layer, transition zone and zone of heating with transmitting telecommunication number；The transition zone is set including stacked above one another
The first zirconium oxide green sheet, the first tooth plate layer, insulating trip, the second tooth plate layer and the second zirconium oxide green sheet, first oxygen
Change zirconium green sheet to be disposed adjacent with the intermediate layer.
2. the lambda sensor according to claim 1 for including tooth plate transition zone, it is characterised in that the first tooth plate layer and
Second tooth plate layer includes the first raised line and the second raised line being arranged alternately, and the spacing of adjacent first raised line and the second raised line is
0.025-0.5mm。
3. the lambda sensor according to claim 2 for including tooth plate transition zone, it is characterised in that the material of first raised line
Matter is aluminum oxide, and the material of second raised line is yttrium-stabile zirconium dioxide and/or aluminum oxide.
4. the lambda sensor for including tooth plate transition zone according to claim any one of 1-3, it is characterised in that the centre
Layer includes packed layer and the 3rd zirconium oxide green sheet being stacked, and the packed layer is disposed adjacent with the signals layer, described
3rd zirconium oxide green sheet is disposed adjacent with the first zirconium oxide green sheet.
5. the lambda sensor according to claim 4 for including tooth plate transition zone, it is characterised in that the signals layer includes letter
Number substrate a, surface of the signal substrate is provided with the first signal electrode, and the first signal electrode surface is provided with electricity
Pole protective layer, the surface relative with first signal electrode is provided with secondary signal electrode, and the second electrode is filled out with described
Fill layer to be disposed adjacent, the signal substrate is further opened with signal via, first signal electrode, secondary signal electrode pass through institute
State signal via connection；Air duct is offered in the packed layer, the size of the air duct is less than secondary signal electrode
Size.
6. the lambda sensor according to claim 5 for including tooth plate transition zone, it is characterised in that the zone of heating includes adding
Hot substrate, the heating substrate is provided with heating electrode close to the one side of the second zirconium oxide green sheet, with the heating electricity
Extremely relative one side is provided with heating pin, and the heating substrate is additionally provided with heating through hole, and the heating electrode adds with described
Hot pin is connected by heating through hole.
7. the lambda sensor according to claim 6 for including tooth plate transition zone, it is characterised in that the second raised line material
For yttrium-stabile zirconium dioxide and the mixture of aluminum oxide, in the mixture, the mass percent of the yttrium-stabile zirconium dioxide
For 20-99%；The signal substrate, the first zirconium oxide green sheet, the second zirconium oxide green sheet, the 3rd zirconium oxide green sheet, fill out
It is yttrium stable zirconium oxide to fill layer, the material of heating substrate, and the insulating trip material includes aluminum oxide.
8. a kind of preparation technology of the lambda sensor comprising tooth plate transition zone, it is characterised in that comprise the following steps：
A, making zone of heating, are made on heating substrate after heating through hole, and heating through hole pulp layer is printed in heating through hole,
The positive and negative of heating substrate makes heating electrode and heating pin respectively, and the pulp layer, heating electrode and heating pin are
Pt；
B, making signals layer, make signal via on signal substrate, the printing signal through hole pulp layer in signal via, in letter
The positive and negative of number substrate makes the first signal electrode and secondary signal electrode respectively, and makes electrode on the first signal electrode surface
Protective layer；
C, surface making the first tooth plate layer in the first zirconium oxide green sheet, by aluminum oxide and yttrium-stabile zirconium dioxide and/or oxygen
Change aluminium and be alternately printed in the first zirconium oxide green sheet surface, similarly, the second tooth plate is made on the surface of the second zirconium oxide green sheet
Layer；
D, packed layer laminated in the 3rd zirconium oxide green sheet, obtain intermediate layer；
E, sequentially there are the first zirconium oxide green sheet of the first tooth plate layer, insulating trip, making to have the signals layer, intermediate layer, the making
Second zirconium oxide green sheet of two tooth plates layer, zone of heating are laminated, and obtain chip green compact；
F, the sintering chip green compact, produce lambda sensor.
9. the preparation technology of the lambda sensor according to claim 8 comprising tooth plate transition zone, it is characterised in that also include
Prepare signal substrate, the first zirconium oxide green sheet, the second zirconium oxide green sheet, the 3rd zirconium oxide green sheet, heating substrate and fill out
Fill the process of layer：First in parts by weight, by 100 parts of yttrium stable zirconium oxide powder and 32-40 parts of alcohol, 32-40 parts of toluene and
After 1-3 parts of fish oil grinding distribution 11-13h, 13-15 parts of polyvinyl butyrals, 7-9 parts of BBP(Butyl Benzyl Phthalates and 5-8 are added
Part polyethylene glycol grinding 9-11h, obtains casting slurry, blank is produced after drying.
10. the preparation technology of the lambda sensor according to claim 9 comprising tooth plate transition zone, it is characterised in that described
Heat through hole pulp layer, heating electrode and heat the raw material of pin and starched for platinum, its viscosity is 60-90Pas, and surface resistance is 35-
45mΩ/square；The signal via pulp layer, the first signal electrode, the raw material of secondary signal electrode are starched and carbon for porous platinum
The mixture of powder, its viscosity is 50-90Pas, and surface resistance is 20-40m Ω/square, and the electric motor protecting layer raw material is many
The mixture of hole zirconia slurry and carbon dust, viscosity is 300-500Pas；The temperature of the sintering is 1400-1500 DEG C, is burnt
The knot time is 1.8-2.2h.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108760822A (en) * | 2018-06-06 | 2018-11-06 | 成都科锐传感技术有限公司 | A kind of chip oxygen sensor and preparation method thereof containing two parts zirconia structure |
| CN109709193A (en) * | 2019-03-13 | 2019-05-03 | 常州君堃电子有限公司 | Nitrogen oxides ammonia gas sensor |
| CN109709194A (en) * | 2019-03-13 | 2019-05-03 | 常州君堃电子有限公司 | Nitrogen oxides ammonia integral sensor |
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2017
- 2017-04-10 CN CN201710231179.5A patent/CN107219276A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108760822A (en) * | 2018-06-06 | 2018-11-06 | 成都科锐传感技术有限公司 | A kind of chip oxygen sensor and preparation method thereof containing two parts zirconia structure |
| CN109709193A (en) * | 2019-03-13 | 2019-05-03 | 常州君堃电子有限公司 | Nitrogen oxides ammonia gas sensor |
| CN109709194A (en) * | 2019-03-13 | 2019-05-03 | 常州君堃电子有限公司 | Nitrogen oxides ammonia integral sensor |
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