CN206256158U - A kind of plasma spraying aluminium base electrothermal device - Google Patents
A kind of plasma spraying aluminium base electrothermal device Download PDFInfo
- Publication number
- CN206256158U CN206256158U CN201621255811.7U CN201621255811U CN206256158U CN 206256158 U CN206256158 U CN 206256158U CN 201621255811 U CN201621255811 U CN 201621255811U CN 206256158 U CN206256158 U CN 206256158U
- Authority
- CN
- China
- Prior art keywords
- layer
- plasma spraying
- aluminium base
- powder
- electrothermal device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
The utility model discloses a kind of plasma spraying aluminium base electrothermal device, its aluminium base surface is by plasma spraying mode blasting medium layer, dielectric layer outer surface sprays resistive layer by plasma spraying mode, resistive layer outer surface sprays encapsulated layer by plasma spraying mode, and resistive layer sets the electrode for exposing to encapsulated layer.The plasma spraying aluminium base electrothermal device has advantages below, specially：1st, breach original base material and be confined to the limitation of stainless steel, ceramics and glass, and can effectively mitigate the weight of electrothermal device and reduce material cost；2nd, dielectric layer, resistive layer, encapsulated layer use powder direct spraying one-shot forming, and production efficiency is high and product percent of pass is high；3rd, dielectric layer, resistive layer, encapsulated layer are sprayed by plasma spraying mode and formed, and the adhesion between each layer is strong, and product reliability is good.
Description
Technical field
The utility model is related to thermo electric material technical field, more particularly to a kind of plasma spraying aluminium base electrothermal device.
Background technology
Plasma spraying is to use rigidity plasma arc for thermal source, the heat spraying method based on dusty spray material, etc.
Ion arc is the abbreviation of plasma arcs；Plasma refers to that gas is partly or entirely ionized under superelevation temperature state, is formed
Negative ions（Electronics）Quantity is equal and the overall electric conductor in electroneutral.Electric arc is in itself plasma, but only works as electric arc
Compressed by thermal pinch, from magnetic compression effect, mechanical compress effect, during as compression arc with higher temperature,
Just it is referred to as plasma arcs, its central temperature can reach 10000 DEG C -50000 DEG C, and temperature so high makes all of metal and pottery
Ceramic material can be sprayed.
Need to be explained further, plasma spraying technology has been widely used in space technology, and gradually start to answer
For automobile, the advantage of this technology is good heat-insulation effect, can bear high temperature and high pressure, technical maturity, steady quality；Be up to
To the target of low heat emission, ceramic spraying, such as zirconium oxide of piston top spray, the oxygen of cylinder sleeve spray can be carried out to engine chamber part
Change zirconium etc., can reduce radiation loss by the engine of this treatment, mitigate engine sole mass, reduction engine chi
Very little, reduction fuel consumption.With the progress of technology, it is each that plasma spraying technology will widely be applied to each row
Industry.
It should further be noted that existing thick-film electric heater part dielectric layer is main in stainless steel substrate, ceramic base material, glass baseplate
It is upper to be completed by silk-screen repeatedly/sintered glass glaze, low production efficiency, high cost, and product defects is difficult to control to, material is selected
Select be limited in scope, performance is difficult to be lifted.
Utility model content
The purpose of this utility model is in view of the shortcomings of the prior art and provides a kind of plasma spraying aluminium base electric heating
Device, the plasma spraying aluminium base electrothermal device has advantages below, specially：1st, breach original base material be confined to it is stainless
The limitation of steel, ceramics and glass, and can effectively mitigate the weight of electrothermal device and reduce material cost；2nd, dielectric layer,
Resistive layer, encapsulated layer use powder direct spraying one-shot forming, and production efficiency is high and product percent of pass is high；3rd, dielectric layer, resistance
Layer, encapsulated layer are sprayed by plasma spraying mode and formed, and the adhesion between each layer is strong, and product reliability is good.
To reach above-mentioned purpose, the utility model is achieved through the following technical solutions.
A kind of plasma spraying aluminium base electrothermal device, includes aluminium base, and the surface of aluminium base passes through plasma spraying
Mode is coated with dielectric layer, and the outer surface of dielectric layer is coated with resistive layer, the outer surface of resistive layer by plasma spraying mode
Encapsulated layer is coated with by plasma spraying mode, resistive layer is provided with the electrode for exposing to encapsulated layer；
Dielectric layer is ceramic powder last layer or glass dust last layer；
Resistive layer is that molybdenum powder last layer, niobium powder layer, nickel powder last layer, molybdenum alloy powder last layer, niobium alloy powder layer or nickel are closed
Bronze last layer；
Encapsulated layer is ceramic powder last layer or glass dust last layer.
Wherein, the thickness of the dielectric layer is 30 μm -500 μm.
Wherein, the thickness of the resistive layer is 20 μm -80 μm.
Wherein, the thickness of the encapsulated layer is 10 μm -50 μm.
Wherein, the aluminium base is fine aluminium base material or aluminum alloy base material.
Wherein, the ceramic powders are oxide ceramic powder, nitride ceramic powders, carbide ceramic powder, boronation
A kind of or at least two mixed-powders for being constituted in thing ceramic powders.
Wherein, the ceramic powders are alumina ceramic powder.
The beneficial effects of the utility model are：A kind of plasma spraying aluminium base electrothermal device described in the utility model,
By plasma spraying mode blasting medium layer, dielectric layer outer surface sprays electricity by plasma spraying mode on its aluminium base surface
Resistance layer, resistive layer outer surface sprays encapsulated layer by plasma spraying mode, and resistive layer sets the electrode for exposing to encapsulated layer；It is situated between
Matter layer is ceramic powder last layer or glass dust last layer；Resistive layer is molybdenum powder last layer, niobium powder layer, nickel powder last layer, molybdenum alloy powder
Layer, niobium alloy powder layer or nickel alloy powder last layer；Encapsulated layer is ceramic powder last layer or glass dust last layer.The plasma spraying
Aluminium base electrothermal device has advantages below, specially：1st, breach original base material and be confined to stainless steel, ceramics and glass
Limitation, and can effectively mitigate the weight of electrothermal device and reduce material cost；2nd, dielectric layer, resistive layer, encapsulated layer are used
Powder direct spraying one-shot forming, production efficiency is high and product percent of pass is high；3rd, dielectric layer, resistive layer, encapsulated layer pass through etc. from
Sub- spraying method spraying is formed, and the adhesion between each layer is strong, and product reliability is good.
Brief description of the drawings
The utility model is further detailed below with accompanying drawing, but the embodiment in accompanying drawing do not constitute it is right
Any limitation of the present utility model.
Fig. 1 is the structural representation of aluminium base electrothermal device of the present utility model.
Fig. 2 is the structural representation at another visual angle of aluminium base electrothermal device of the present utility model.
Include in fig. 1 and 2：
1 --- aluminium base 2 --- dielectric layer
3 --- resistive layer 4 --- encapsulated layers
5 --- electrode.
Specific embodiment
The utility model is illustrated with reference to specific embodiment.
As shown in figure 1, a kind of electrothermal device of plasma spraying aluminium base 1, includes aluminium base 1, the surface of aluminium base 1 leads to
Cross plasma spraying mode and be coated with dielectric layer 2, the outer surface of dielectric layer 2 is coated with resistive layer 3 by plasma spraying mode,
The outer surface of resistive layer 3 is coated with encapsulated layer 4 by plasma spraying mode, and resistive layer 3 is provided with the electricity for exposing to encapsulated layer 4
Pole 5；
Dielectric layer 2 is ceramic powder last layer or glass dust last layer；
Resistive layer 3 is that molybdenum powder last layer, niobium powder layer, nickel powder last layer, molybdenum alloy powder last layer, niobium alloy powder layer or nickel are closed
Bronze last layer；
Encapsulated layer 4 is ceramic powder last layer or glass dust last layer.
Wherein, the thickness of dielectric layer 2 is 30 μm -500 μm, and the thickness of resistive layer 3 is 20 μm -80 μm, the thickness of encapsulated layer 4
It is 10 μm -50 μm to spend, and aluminium base 1 is fine aluminium base material 1 or aluminum alloy base material；Ceramic powders are oxide ceramic powder, nitridation
A kind of or at least two mixed-powders for being constituted in thing ceramic powders, carbide ceramic powder, boride ceramic powders,
Preferably, ceramic powders are alumina ceramic powder.
By said structure design, the electrothermal device of plasma spraying aluminium base 1 has advantages below, specially：1st, dash forward
Break original base material and be confined to the limitation of stainless steel, ceramics and glass, and can effectively mitigate the weight of electrothermal device simultaneously
Reduce material cost；2nd, dielectric layer 2, resistive layer 3, encapsulated layer 4 use powder direct spraying one-shot forming, and production efficiency is high and produces
Product qualification rate is high；3rd, dielectric layer 2, resistive layer 3, encapsulated layer 4 are sprayed by plasma spraying mode and formed, the combination between each layer
Power is strong, and product reliability is good.
For the above-mentioned electrothermal device of plasma spraying aluminium base 1, it can be prepared from using following preparation method,
Specifically, a kind of preparation method of the electrothermal device of plasma spraying aluminium base 1, it is characterised in that include following processing step,
Specially：
A, cleaning aluminium base 1 simultaneously cause that aluminium base 1 keeps clean；
B, the surface that ceramic powders or glass powder are sprayed at aluminium base 1 by plasma spraying equipment, to spray
Form dielectric layer 2；
C, after dielectric layer 2 spraying finish after, by plasma spraying equipment by thermo electric material powder spray in dielectric layer 2
Outer surface, to form resistive layer 3；Wherein, thermo electric material powder is molybdenum powder, niobium powder, nickel by powder, molybdenum alloy powder, niobium conjunction
A kind of or at least two mixed-powders for being constituted in bronze end, Ni alloy powder；
D, after resistive layer 3 spraying finish after, prepare electrode 5 in resistive layer 3；
E, after electrode 5 prepare finish after, ceramic powders or glass powder are sprayed at by electricity by plasma spraying equipment
The outer surface of resistance layer 3, to form encapsulated layer 4.
Wherein, the power output of the plasma spraying equipment be 500w-500kw, plasma spraying equipment using nitrogen,
One or more mixed gas in argon gas, helium, hydrogen are protected, the spraying powder feeding pressure 0.1 of plasma spraying equipment
MPa -5MPa, powder pushing precision ± 0.1%- ± 1% of plasma spraying equipment, the kg/min of powder sending quantity 0 of plasma spraying equipment
-1kg/min。
Further, the electrothermal device dieletric strength of plasma spraying aluminium base 1：1000-3500V；Electrical insulating property：＞
108MΩ；Leakage current：＜ 0.5mA（1.06 times of operating voltages）；Thermal shock resistance properties：400 DEG C of water quenchings（20 DEG C of water temperature）It is 5 times, micro-
Sem observation flawless.
Carry out above-mentioned preparation method with a specific example below to be described in detail, specifically：1st, by 100*120*10mm
The cleaning of fine aluminium base material 1；2nd, it is 0.8MPa, powder feeding flow for 200kw, powder feeding pressure to use power by plasma apparatus
It is 150g/min, the parameter of powder pushing precision 0.5%, the alumina ceramic powder that granularity is 15 μm is sprayed on aluminium base 1, with
Dielectric layer 2 is formed, the thickness of dielectric layer 2 is 280 μm；3rd, with power it is then that 120kw, powder feeding pressure are 0.6MPa, powder feeding flow
It is 70g/min, the technological parameter of powder pushing precision 0.3%, by Ni28Cr70Al2 powder sprays that granularity is 20 μm in aluminium base 1
On dielectric layer 2, the thickness of resistive layer 3 of preparation is 35 μm, line width 3mm, spacing 0.1mm；4th, electrode 5 and spraying encapsulated layer 4 are prepared,
Encapsulated layer 4 is 20 microns of zirconia ceramics powder bed.The prepared electrothermal device general power of aluminium base 1 be 4500w,
TCR is 45ppm/ DEG C；Dieletric strength：3000V；Electrical insulating property：＞ 108MΩ；Leakage current：＜ 0.5mA（1.06 times of work electricity
Pressure）；Thermal shock resistance properties：500 DEG C of water quenchings（20 DEG C of water temperature）5 times, micro- sem observation flawless.
Above content is only preferred embodiment of the present utility model, for one of ordinary skill in the art, according to this reality
With new thought, will change in specific embodiments and applications, this specification content should not be construed as
To limitation of the present utility model.
Claims (7)
1. a kind of plasma spraying aluminium base（1）Electrothermal device, it is characterised in that：Include aluminium base（1）, aluminium base（1）'s
Surface is coated with dielectric layer by plasma spraying mode（2）, dielectric layer（2）Outer surface sprayed by plasma spraying mode
There is resistive layer（3）, resistive layer（3）Outer surface encapsulated layer is coated with by plasma spraying mode（4）, resistive layer（3）Set
Expose to encapsulated layer（4）Electrode（5）；
Dielectric layer（2）It is ceramic powder last layer or glass dust last layer；
Resistive layer（3）It is molybdenum powder last layer, niobium powder layer, nickel powder last layer, molybdenum alloy powder last layer, niobium alloy powder layer or nickel alloy
Powder bed；
Encapsulated layer（4）It is ceramic powder last layer or glass dust last layer.
2. a kind of plasma spraying aluminium base according to claim 1（1）Electrothermal device, it is characterised in that：The medium
Layer（2）Thickness be 30 μm -500 μm.
3. a kind of plasma spraying aluminium base according to claim 1（1）Electrothermal device, it is characterised in that：The resistance
Layer（3）Thickness be 20 μm -80 μm.
4. a kind of plasma spraying aluminium base according to claim 1（1）Electrothermal device, it is characterised in that：The encapsulation
Layer（4）Thickness be 10 μm -50 μm.
5. a kind of plasma spraying aluminium base according to claim 1（1）Electrothermal device, it is characterised in that：The aluminium base
Material（1）It is fine aluminium base material or aluminum alloy base material.
6. a kind of plasma spraying aluminium base according to claim 1（1）Electrothermal device, it is characterised in that：The ceramics
Powder be oxide ceramic powder, nitride ceramic powders, carbide ceramic powder, boride ceramic powders in one kind or
At least two mixed-powders for being constituted.
7. a kind of plasma spraying aluminium base according to claim 1（1）Electrothermal device, it is characterised in that：The ceramics
Powder is alumina ceramic powder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621255811.7U CN206256158U (en) | 2016-11-23 | 2016-11-23 | A kind of plasma spraying aluminium base electrothermal device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621255811.7U CN206256158U (en) | 2016-11-23 | 2016-11-23 | A kind of plasma spraying aluminium base electrothermal device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206256158U true CN206256158U (en) | 2017-06-16 |
Family
ID=59025001
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621255811.7U Active CN206256158U (en) | 2016-11-23 | 2016-11-23 | A kind of plasma spraying aluminium base electrothermal device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206256158U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106555151A (en) * | 2016-11-23 | 2017-04-05 | 东莞珂洛赫慕电子材料科技有限公司 | A kind of plasma spraying aluminium base electrothermal device and preparation method thereof |
-
2016
- 2016-11-23 CN CN201621255811.7U patent/CN206256158U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106555151A (en) * | 2016-11-23 | 2017-04-05 | 东莞珂洛赫慕电子材料科技有限公司 | A kind of plasma spraying aluminium base electrothermal device and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106555151A (en) | A kind of plasma spraying aluminium base electrothermal device and preparation method thereof | |
| CN102515850B (en) | Carbon/carbon composite material ultrahigh temperature oxidation resistant coating and preparation method thereof | |
| JP5665973B2 (en) | Ceramic heater | |
| CN101682936B (en) | Spray deposited heater element | |
| KR20070079862A (en) | Heating element using carbon nano tube | |
| CN110117762A (en) | Prepare method, the sheet metal, thermocouple, electric appliance of insulating coating | |
| US9365918B2 (en) | Method and apparatus for thermal spraying | |
| WO2010110137A1 (en) | Wafer retainer for improving a method of connecting a high-frequency electrode, and semiconductor production device on which the wafer retainer is mounted | |
| CN109600867A (en) | A kind of ceramic heating element and the device including the ceramic heating element | |
| CN110981546A (en) | Anti-oxidation ZrB on surface of C-C composite material2-SiC-Y2O3Coating and method for producing the same | |
| CN206256158U (en) | A kind of plasma spraying aluminium base electrothermal device | |
| CN206256157U (en) | A kind of plasma spraying stainless steel tube electrothermal device | |
| JP4482535B2 (en) | Heating device | |
| CN105931932B (en) | A kind of preparation method for nitrogenizing aluminum insulation layer cathode heater | |
| CN107695358B (en) | A kind of preparation method of welding electrode | |
| CN107312994A (en) | A kind of thermal spraying electrothermal device and preparation method thereof | |
| CN110129851B (en) | Thermocouple, preparation method thereof and electric appliance | |
| CN108715989B (en) | Preparation method of plasma spraying insulating coating | |
| JP2023159880A (en) | Ceramic, atomization core and atomizer | |
| CN106637043A (en) | Electric heating device with plasma-sprayed stainless steel tube | |
| CN109239149B (en) | A kind of electrochemical sensor and preparation method thereof monitoring Nitrogen in Hot Metal | |
| CN110395996A (en) | Improve the preparation method of electric field-assisted caking power | |
| CN106083057A (en) | A kind of silicon carbide-matrix multiphase ceramics material and preparation method thereof | |
| CN106676457A (en) | Preparation method for plasma spraying electric heating device dielectric layer | |
| CN115014084A (en) | Sintering furnace and method for preparing tantalum carbide coating on surface of graphite substrate |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant |