CN110172661A - A kind of thermal spraying pyrostat thermometric coating and preparation method - Google Patents
A kind of thermal spraying pyrostat thermometric coating and preparation method Download PDFInfo
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- CN110172661A CN110172661A CN201910402462.9A CN201910402462A CN110172661A CN 110172661 A CN110172661 A CN 110172661A CN 201910402462 A CN201910402462 A CN 201910402462A CN 110172661 A CN110172661 A CN 110172661A
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- 238000000576 coating method Methods 0.000 title claims abstract description 37
- 239000011248 coating agent Substances 0.000 title claims abstract description 36
- 238000002360 preparation method Methods 0.000 title claims abstract description 17
- 238000007751 thermal spraying Methods 0.000 title claims abstract description 17
- 238000000034 method Methods 0.000 claims abstract description 50
- 238000007750 plasma spraying Methods 0.000 claims abstract description 44
- 239000011159 matrix material Substances 0.000 claims abstract description 30
- 239000000843 powder Substances 0.000 claims description 136
- 229910045601 alloy Inorganic materials 0.000 claims description 88
- 239000000956 alloy Substances 0.000 claims description 88
- 229910018487 Ni—Cr Inorganic materials 0.000 claims description 44
- 239000007921 spray Substances 0.000 claims description 41
- 238000005507 spraying Methods 0.000 claims description 27
- 229910002482 Cu–Ni Inorganic materials 0.000 claims description 26
- 229910003310 Ni-Al Inorganic materials 0.000 claims description 20
- 239000002184 metal Substances 0.000 claims description 19
- 229910052751 metal Inorganic materials 0.000 claims description 19
- 239000000919 ceramic Substances 0.000 claims description 18
- 229910052759 nickel Inorganic materials 0.000 claims description 13
- 238000009413 insulation Methods 0.000 claims description 12
- 239000000758 substrate Substances 0.000 claims description 9
- 229910052581 Si3N4 Inorganic materials 0.000 claims description 8
- 238000002203 pretreatment Methods 0.000 claims description 7
- 238000005488 sandblasting Methods 0.000 claims description 7
- 230000003746 surface roughness Effects 0.000 claims description 7
- 229910001209 Low-carbon steel Inorganic materials 0.000 claims description 5
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 5
- 229910052802 copper Inorganic materials 0.000 claims description 5
- 229910052593 corundum Inorganic materials 0.000 claims description 5
- 229910001845 yogo sapphire Inorganic materials 0.000 claims description 5
- 238000001514 detection method Methods 0.000 claims 1
- 239000000463 material Substances 0.000 description 7
- 229910000906 Bronze Inorganic materials 0.000 description 5
- 239000010974 bronze Substances 0.000 description 5
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 5
- 238000009529 body temperature measurement Methods 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009530 blood pressure measurement Methods 0.000 description 1
- 238000005524 ceramic coating Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 208000002925 dental caries Diseases 0.000 description 1
- 238000005183 dynamical system Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 230000003862 health status Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001141 propulsive effect Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 229910000601 superalloy Inorganic materials 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
- C23C4/06—Metallic material
- C23C4/08—Metallic material containing only metal elements
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
- C23C4/10—Oxides, borides, carbides, nitrides or silicides; Mixtures thereof
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/12—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
- C23C4/134—Plasma spraying
Abstract
The invention discloses a kind of thermal spraying pyrostat thermometric coating and preparation methods, belong to technical field of hot, the present invention use plasma spraying method on pretreated metallic matrix coating thickness for 200 ~ 300 μm of insulating layer, then using plasma spraying method again, successively pyrostat thermometric coating is finally prepared for thermometric layer, 80 ~ 100 μm of insulating layers, 300 ~ 400 μm of outer thermometric layers in 300 ~ 400 μm in coating thickness on the insulating layer；In the sensor thermometric coating, interior thermometric layer connect to form measuring junction with outer thermometric layer the same end with conducting wire in thermometric layer, the other end is separately connected secondary meter positive and negative terminal with conducting wire, thermometric layer directly measures temperature, and temperature signal is converted to thermo-electromotive force signal, the temperature of measured medium is converted by secondary meter.
Description
Technical field
The present invention relates to a kind of thermal spraying pyrostat thermometric coating and preparation methods, belong to technical field of hot.
Background technique
Pyrostat thermometric is in fields such as space flight, aviation, national defense construction, energy development and life common heater parts
There is wide application demand.Temperature measurement, the measurement of various engine cavities intracorporal temperature, spaceship in high-temperature oil well and
The gesture stability of aerospace craft, the temperature measurement of life common heater part, high-speed aircraft or long-range hypervelocity missile
The temperature measurement of the heat-resisting cavitys such as control, jet engine, rocket, guided missile, satellite and the surface each section of flying, especially in weapon
System high temperature sensor thermometric is that dynamical system institute is indispensable.Therefore, to the research and development of pyrostat thermometric
It is of great significance.The power-equipments such as rocket engine, aero-engine, heavy duty gas turbine, coal burning and gas burning boiler it is main
Component is in high-temperature severe environment, and chamber temperature is even more than 2000 DEG C.It can be to jet combustion room, pressure using pyrostat
The parameters such as pressure, the temperature of the key positions such as mechanism of qi, blade carry out real-time monitoring, improve combustibility and propulsive efficiency, and right
Component health status is assessed.Pyrostat thermometric is constantly subjected to height with its excellent high temperature operation capability in the sensor
Degree is paid attention to, and is that one of key areas of sensor research and national governments make great efforts one of high-tech technology grasped.With section
The continuous development of technology, pyrostat thermometric will be towards sensitive material diversification, processing technology diversification, multifunctional unit
Change, intelligent, the diversified direction of research method are developed, and should guarantee that sensor thermometric works normally at high temperature, Er Qiexin
It is number undistorted.
Currently, traditional sensors thermometric is limited using temperature, mainly based on silicon based sensor thermometric, work at 100 DEG C
In temperature range, commercialized silicon based sensor thermometric technical maturity, small in size, performance is good, but when it is in more than 120 DEG C rings
In use, internal PN junction will appear electric leakage, sensor performance decline is even failed in border.In addition, silica-base material is when being greater than 500 DEG C
It also occur that plastic deformation, is not able to satisfy the demand of pressure measurement under hot environment.
Summary of the invention
Aiming at the problem that conventional high-temperature sensor temperature measurement fraction, the present invention provides a kind of thermal spraying pyrostat thermometric painting
Layer preparation method, the present invention use plasma spraying method on pretreated metallic matrix coating thickness for 200 ~ 300 μm
Insulating layer, then use again plasma spraying method on the insulating layer successively coating thickness for thermometric layer, 80 ~ 100 in 300 ~ 400 μm
μm insulating layer, 300 ~ 400 μm of outer thermometric layers, are finally prepared pyrostat thermometric coating；In the sensor thermometric coating,
Interior survey layer is connect to form measuring junction with conducting wire with exterior measuring layer the same end in thermometric layer, and the other end is separately connected secondary instrument with conducting wire
Table positive and negative terminal, thermometric layer directly measures temperature, and temperature signal is converted to thermo-electromotive force signal, is converted by secondary meter
The temperature of measured medium.
Insulating layer high-temperature insulation Al2O3、Si3N4Or BN ceramic powders are prepared using plasma spraying method, are had excellent
Different insulating properties, good heat-resisting quantity；Thermometric layer using two kinds of different-alloy powder by one circuit of conducting wire composition, two kinds
The connection of different-alloy powder, inside and outside thermometric layer temperature is different, generates thermo-electromotive force.
This thermal spraying pyrostat thermometric coating the preparation method is as follows:
(1) metallic matrix polished, cleaned, the pre-treatment of sandblasting makes metal base surface roughness Ra > 24；
The metallic matrix is mild steel (45# steel), cobalt-base alloys (K640) or nickel-base alloy (DZ125, IN738), the gold
Category matrix thickness is 1.6 ~ 4.8mm；
The metallic matrix is circular ring shape or bulk；
(2) using plasma spraying method, spraying high-temperature insulation ceramic powders are formed on step (1) treated metallic matrix
The insulating layer that 200 ~ 300 μm of thickness, wherein the spraying current of plasma spraying method is 525 ~ 550A, N2Rate be 1800 ~
2200mL/h, spray distance are 80 ~ 90mm, powder feeding voltage is 9 ~ 10V, 450 ~ 750 DEG C of metallic matrix preheating temperature to be sprayed；
The high-temperature insulation ceramic powders are Al2O3Powder, Si3N4Powder or BN powder；
(3) E type alloy powder is sprayed on the insulating layer of step (2) using plasma spraying method or K-type alloy powder forms E type
Pyrostat thermometric coating is made in thermometric layer or K-type thermometric layer；Wherein the spraying current of plasma spraying method be 475 ~
500A、N2Rate is 1900 ~ 2300mL/h, spray distance is 90 ~ 100mm, powder feeding voltage is 8 ~ 9V；
The E type alloy powder is Cu-Ni alloy powder and Ni-Cr alloy powder, Cu-Ni alloy powder and Ni-Cr alloy powder
The quality such as end, wherein the mass percent of Cu is 60% ~ 70% in Cu-Ni alloy powder, remaining is Ni；In Ni-Cr alloy powder
The mass percent of Ni is 80% ~ 90%, remaining is Cr；E type alloy powder uses single channel powder feeding to spray to form inside as Cu-Ni
Layer, the thermometric layer that outside is Ni-Cr layers, every layer with a thickness of 300 ~ 400 μm；
The K-type alloy powder is Ni-Cr alloy powder and Ni-Al alloy powder, Ni-Cr alloy powder and Ni-Al alloyed powder
The quality such as end；Wherein the mass percent of Ni is 70% ~ 80% in Ni-Cr alloy powder, remaining is Ni；Wherein Ni-Al alloyed powder
The mass percent of Ni is 90% ~ 95% in end, remaining is Al；K-type alloy powder uses single channel powder feeding to spray to form inside as Ni-
Cr layers, the thermometric layer that outside is Ni-Al layers, every layer with a thickness of 300 ~ 400 μm；
High-temperature insulation ceramic powders are wherein sprayed using plasma spraying method between the inside temperature layer and outer thermometric layer of thermometric layer
80 ~ 100 μm of thickness of insulating layer is formed, wherein the spraying current of plasma spraying method is 500 ~ 525A, N2Rate be 2000 ~
2200mL/h, spray distance are 80 ~ 90mm, powder feeding voltage is 8 ~ 10V；
The high-temperature insulation ceramic powders are Al2O3Powder, Si3N4Powder or BN powder；
Temperature is detected at 400 ~ 800 DEG C, sprays E type alloy powder；Temperature is detected at 800 ~ 1200 DEG C, sprays K-type alloy
Powder.
Another object of the present invention is to provide the above method and pyrostat thermometric coating is made.
Beneficial effects of the present invention:
(1) the method for the present invention measures temperature by thermometric layer, and temperature signal is converted to thermo-electromotive force signal, passes through secondary instrument
Table is converted into the temperature of measured medium；
(2) the method for the present invention obtains sensor thermometric coating using plasma spraying, and realization simplifies the structure and multifunctional unit
Change；
(3) the method for the present invention insulating layer is Al2O3、Si3N4Or BN ceramic coating, both avoided metallic matrix, interior thermometric layer, exterior measuring
Short circuit between warm layer also has good heat-resisting quantity.
Detailed description of the invention
Fig. 1 circular ring shape pyrostat thermometric coating；
Fig. 2 bulk pyrostat thermometric coating.
Specific embodiment
Invention is further described in detail With reference to embodiment, but protection scope of the present invention and unlimited
In the content.
Embodiment 1: this thermal spraying pyrostat thermometric coating the preparation method is as follows:
(1) circular ring metal matrix polished, cleaned, the pre-treatment of sandblasting makes circular ring metal Substrate Surface Roughness Ra
>24；Wherein circular ring metal matrix is cobalt-base alloys (K640), and basis material is with a thickness of 1.6mm；
(2) Al is sprayed on step (1) treated cobalt-base alloys matrix using plasma spraying method2O3Ceramic powders form thickness
The insulating layer of 200 μm of degree, wherein the spraying current of plasma spraying method is 525A, N2Rate is 1800mL/h, spray distance is
80mm, powder feeding voltage are 9V, 450 DEG C of metallic matrix preheating temperature to be sprayed；
(3) E type alloy powder is sprayed on the insulating layer of step (2) using plasma spraying method and forms E type thermometric layer, E type closes
Bronze end be Cu-Ni alloy powder and Ni-Cr alloy powder, the quality such as Cu-Ni alloy powder and Ni-Cr alloy powder, wherein
The mass percent of Cu is 60% in Cu-Ni alloy powder, remaining is Ni；The mass percent of Ni is in Ni-Cr alloy powder
80%, remaining is Cr；E type alloy powder sprays to be formed with a thickness of thermometric layer in 300 μm of Cu-Ni and 300 μm using single channel powder feeding
The outer thermometric layer of Ni-Cr, wherein the spraying current of plasma spraying method is 475A, N2Rate is 1900mL/h, spray distance is
90mm, powder feeding voltage are 8V；
It between thermometric layer, i.e., is being sprayed on thermometric layer using plasma spraying method in Cu-Ni outside thermometric layer in Cu-Ni and Ni-Cr
Apply high-temperature insulation Si3N4Ceramic powders form 80 μm of thickness of insulating layer, then spray the outer thermometric layer of Ni-Cr again；Its it is medium from
The spraying current of sub- spray coating method is 500A, N2Rate is 2000mL/h, spray distance 80mm, powder feeding voltage are 8V, and height is made
Temperature sensor thermometric coating (Fig. 1).
Embodiment 2: this thermal spraying pyrostat thermometric coating the preparation method is as follows:
(1) reguline metal matrix polished, cleaned, the pre-treatment of sandblasting makes reguline metal Substrate Surface Roughness reach Ra
>24；Wherein reguline metal matrix is nickel-base alloy (DZ125), and basis material is with a thickness of 4.8mm；
(2) Al is sprayed in step (1) treated Superalloy Substrate using plasma spraying method2O3Ceramic powders form thickness
The insulating layer of 300 μm of degree, wherein the spraying current of plasma spraying method is 550A, N2Rate is 2200mL/h, spray distance is
90mm, powder feeding voltage are 10V, 750 DEG C of metallic matrix preheating temperature to be sprayed；
(3) K-type alloy powder is sprayed on the insulating layer of step (2) using plasma spraying method and forms K-type thermometric layer, K-type is closed
Bronze end be Ni-Cr alloy powder and Ni-Al alloy powder, the quality such as Ni-Cr alloy powder and Ni-Al alloy powder, wherein
The mass percent of Ni is 70% in Ni-Cr alloy powder, remaining is Cr；The mass percent of Ni is in Ni-Al alloy powder
90%, remaining is Al；K-type alloy powder sprays to be formed with a thickness of thermometric layer in 400 μm of Ni-Cr and 400 μm using single channel powder feeding
The outer thermometric layer of Ni-Al, wherein the spraying current of plasma spraying method is 500A, N2Rate is 2300mL/h, spray distance is
100mm, powder feeding voltage are 9V；
It between thermometric layer, i.e., in Ni-Cr on thermometric layer, is being sprayed using plasma spraying method outside thermometric layer in Ni-Cr and Ni-Al
It applies high-temperature insulation BN ceramic powders and forms 100 μm of thickness of insulating layer, then spray the outer thermometric layer of Ni-Al；Wherein plasma spray
The spraying current of coating is 525A, N2Rate is 2200mL/h, spray distance 90mm, powder feeding voltage are 10V, and high temperature is made and passes
Sensor thermometric coating (Fig. 2).
Embodiment 3: this thermal spraying pyrostat thermometric coating the preparation method is as follows:
(1) circular ring metal matrix polished, cleaned, the pre-treatment of sandblasting reaches circular ring metal Substrate Surface Roughness
To Ra > 24；Wherein circular ring metal matrix is nickel-base alloy (IN738), and basis material is with a thickness of 3.2mm；
(2) Si is sprayed on step (1) treated cobalt-base alloys matrix using plasma spraying method3N4Ceramic powders form thickness
The insulating layer of 250 μm of degree, wherein the spraying current of plasma spraying method is 537A, N2Rate is 2000mL/h, spray distance is
85mm, powder feeding voltage are 9.5V, 600 DEG C of metallic matrix preheating temperature to be sprayed；
(3) E type alloy powder is sprayed on the insulating layer of step (2) using plasma spraying method and forms E type thermometric layer, E type closes
Bronze end be Cu-Ni alloy powder and Ni-Cr alloy powder, the quality such as Cu-Ni alloy powder and Ni-Cr alloy powder, wherein
The mass percent of Cu is 70% in Cu-Ni alloy powder, remaining is Ni；The mass percent of Ni is in Ni-Cr alloy powder
90%, remaining is Cr；E type alloy powder sprays to be formed with a thickness of thermometric layer in 350 μm of Cu-Ni and 350 μm using single channel powder feeding
The outer thermometric layer of Ni-Cr, wherein the spraying current of plasma spraying method is 488A, N2Rate is 2100mL/h, spray distance is
95mm, powder feeding voltage are 8V；
It between thermometric layer, i.e., is being sprayed on thermometric layer using plasma spraying method in Cu-Ni outside thermometric layer in Cu-Ni and Ni-Cr
Apply high-temperature insulation Si3N4Ceramic powders form 90 μm of thickness of insulating layer, then spray the outer thermometric layer of Ni-Cr again；Its it is medium from
The spraying current of sub- spray coating method is 515A, N2Rate is 2100mL/h, spray distance 85mm, powder feeding voltage are 9V, and height is made
Temperature sensor thermometric coating.
Embodiment 4: this thermal spraying pyrostat thermometric coating the preparation method is as follows:
(1) reguline metal matrix polished, cleaned, the pre-treatment of sandblasting makes reguline metal Substrate Surface Roughness reach Ra
>24；Wherein reguline metal matrix is mild steel (45# steel), and basis material is with a thickness of 2.0mm；
(2) Si is sprayed on step (1) treated low carbon steel substrate using plasma spraying method3N4Ceramic powders form thickness
200 μm of insulating layer, wherein the spraying current of plasma spraying method is 525A, N2Rate is 1900mL/h, spray distance is
80mm, powder feeding voltage are 9V, 500 DEG C of metallic matrix preheating temperature to be sprayed；
(3) K-type alloy powder is sprayed on the insulating layer of step (2) using plasma spraying method and forms K-type thermometric layer, K-type is closed
Bronze end be Ni-Cr alloy powder and Ni-Al alloy powder, the quality such as Ni-Cr alloy powder and Ni-Al alloy powder, wherein
The mass percent of Ni is 80% in Ni-Cr alloy powder, remaining is Cr；The mass percent of Ni is in Ni-Al alloy powder
95%, remaining is Al；K-type alloy powder sprays to be formed with a thickness of thermometric layer in 400 μm of Ni-Cr and 400 μm using single channel powder feeding
The outer thermometric layer of Ni-Al, wherein the spraying current of plasma spraying method is 500A, N2Rate is 2300mL/h, spray distance is
100mm, powder feeding voltage are 9V；
It between thermometric layer, i.e., in Ni-Cr on thermometric layer, is being sprayed using plasma spraying method outside thermometric layer in Ni-Cr and Ni-Al
It applies high-temperature insulation BN ceramic powders and forms 80 μm of thickness of insulating layer, then spray the outer thermometric layer of Ni-Al；Wherein plasma spraying
The spraying current of method is 500A, N2Rate is 2000mL/h, spray distance 80mm, powder feeding voltage are 8V, and high temp sensitive is made
Device thermometric coating.
Embodiment 5: this thermal spraying pyrostat thermometric coating the preparation method is as follows:
(1) circular ring metal matrix polished, cleaned, the pre-treatment of sandblasting reaches circular ring metal Substrate Surface Roughness
To Ra > 24；Wherein circular ring metal matrix is mild steel (45# steel), and basis material is with a thickness of 4.8mm；
(2) using plasma spraying method, spraying BN ceramic powders form thickness on step (1) treated cobalt-base alloys matrix
300 μm of insulating layer, wherein the spraying current of plasma spraying method is 550A, N2Rate is 2200mL/h, spray distance is
90mm, powder feeding voltage are 10V, 750 DEG C of metallic matrix preheating temperature to be sprayed；
(3) E type alloy powder is sprayed on the insulating layer of step (2) using plasma spraying method and forms E type thermometric layer, E type closes
Bronze end be Cu-Ni alloy powder and Ni-Cr alloy powder, the quality such as Cu-Ni alloy powder and Ni-Cr alloy powder, wherein
The mass percent of Cu is 65% in Cu-Ni alloy powder, remaining is Ni；The mass percent of Ni is in Ni-Cr alloy powder
85%, remaining is Cr；E type alloy powder sprays to be formed with a thickness of thermometric layer in 300 μm of Cu-Ni and 300 μm using single channel powder feeding
The outer thermometric layer of Ni-Cr, wherein the spraying current of plasma spraying method is 475A, N2Rate is 1900mL/h, spray distance is
90mm, powder feeding voltage are 8V；
It between thermometric layer, i.e., is being sprayed on thermometric layer using plasma spraying method in Cu-Ni outside thermometric layer in Cu-Ni and Ni-Cr
Apply high-temperature insulation Si3N4Ceramic powders form 100 μm of thickness of insulating layer, then spray the outer thermometric layer of Ni-Cr again；Its is medium
The spraying current of plasma spray method is 525A, N2Rate is 2200mL/h, spray distance 90mm, powder feeding voltage are 10V, is made
Pyrostat thermometric coating;
。
Claims (6)
1. a kind of preparation method of thermal spraying pyrostat thermometric coating, which is characterized in that specific step is as follows:
(1) metallic matrix polished, cleaned, the pre-treatment of sandblasting makes metal base surface roughness Ra > 24；
(2) using plasma spraying method, spraying high-temperature insulation ceramic powders are formed on step (1) treated metallic matrix
The insulating layer that 200 ~ 300 μm of thickness, wherein the spraying current of plasma spraying method is 525 ~ 550A, N2Rate be 1800 ~
2200mL/h, spray distance are 80 ~ 90mm, powder feeding voltage is 9 ~ 10V, 450 ~ 750 DEG C of metallic matrix preheating temperature to be sprayed；
(3) E type alloy powder is sprayed on the insulating layer of step (2) using plasma spraying method or K-type alloy powder forms E type
Pyrostat thermometric coating is made in thermometric layer or K-type thermometric layer；Wherein the spraying current of plasma spraying method be 475 ~
500A、N2Rate is 1900 ~ 2300mL/h, spray distance is 90 ~ 100mm, powder feeding voltage is 8 ~ 9V；
The E type alloy powder is Cu-Ni alloy powder and Ni-Cr alloy powder, Cu-Ni alloy powder and Ni-Cr alloy powder
The quality such as end, wherein the mass percent of Cu is 60% ~ 70% in Cu-Ni alloy powder, remaining is Ni；In Ni-Cr alloy powder
The mass percent of Ni is 80% ~ 90%, remaining is Cr；E type alloy powder uses single channel powder feeding to spray to form inside as Cu-Ni
Layer, the thermometric layer that outside is Ni-Cr layers, every layer with a thickness of 300 ~ 400 μm；
The K-type alloy powder is Ni-Cr alloy powder and Ni-Al alloy powder, Ni-Cr alloy powder and Ni-Al alloyed powder
The quality such as end；Wherein the mass percent of Ni is 70% ~ 80% in Ni-Cr alloy powder, remaining is Ni；Wherein Ni-Al alloyed powder
The mass percent of Ni is 90% ~ 95% in end, remaining is Al；K-type alloy powder uses single channel powder feeding to spray to form inside as Ni-
Cr layers, the thermometric layer that outside is Ni-Al layers, every layer with a thickness of 300 ~ 400 μm；
Wherein formed between the la m and outer layer of thermometric layer using plasma spraying method spraying high-temperature insulation ceramic powders
The insulating layer that 80 ~ 100 μm of thickness, wherein the spraying current of plasma spraying method is 500 ~ 525A, N2Rate be 2000 ~
2200mL/h, spray distance are 80 ~ 90mm, powder feeding voltage is 8 ~ 10V.
2. the preparation method of thermal spraying pyrostat thermometric coating according to claim 1, it is characterised in that: Metal Substrate
Body is mild steel, cobalt-base alloys or nickel-base alloy.
3. the preparation method of thermal spraying pyrostat thermometric coating according to claim 2, it is characterised in that: Metal Substrate
Body thickness is 1.6 ~ 4.8mm.
4. the preparation method of thermal spraying pyrostat thermometric coating according to claim 1, it is characterised in that: high temperature resistant
Insulating ceramics powder is Al2O3Powder, Si3N4Powder or BN powder.
5. the preparation method of thermal spraying pyrostat thermometric coating according to claim 1, it is characterised in that: detection temperature
Degree sprays E type alloy powder at 400 ~ 800 DEG C；Temperature is detected at 800 ~ 1200 DEG C, sprays K-type alloy powder.
6. high temp sensitive made from the preparation method of the described in any item thermal spraying pyrostat thermometric coatings of claim 1-5
Device thermometric coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910402462.9A CN110172661B (en) | 2019-05-15 | 2019-05-15 | Thermal spraying high-temperature sensor temperature measurement coating and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910402462.9A CN110172661B (en) | 2019-05-15 | 2019-05-15 | Thermal spraying high-temperature sensor temperature measurement coating and preparation method thereof |
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| EP2915591A4 (en) * | 2012-10-31 | 2016-05-11 | Hyundai Kefico Corp | Oxygen sensor having porous ceramic coating layer formed thereon and method for forming porous ceramic coating layer |
| CN105779924A (en) * | 2016-03-24 | 2016-07-20 | 上海交通大学 | Method for manufacturing high-temperature insulated wire by spraying thermal barrier coating to wrap surface of Pt metal wire |
| CN107881457A (en) * | 2017-11-13 | 2018-04-06 | 周宇杰 | A kind of temperature sensor fire resistant anticorrosive wear-resistant coating, temperature sensor and application |
| CN108531848A (en) * | 2017-12-27 | 2018-09-14 | 中国航发四川燃气涡轮研究院 | A kind of thick film thermocouple sensor manufacturing process based on plasma spraying |
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| US20020153121A1 (en) * | 2001-04-18 | 2002-10-24 | Ford Motor Company | Automated sprayform cell |
| EP2915591A4 (en) * | 2012-10-31 | 2016-05-11 | Hyundai Kefico Corp | Oxygen sensor having porous ceramic coating layer formed thereon and method for forming porous ceramic coating layer |
| CN103924184A (en) * | 2014-04-30 | 2014-07-16 | 绍兴斯普瑞微纳科技有限公司 | WO3 gas sensitive coating in porous micro-nano structure and preparation method thereof |
| CN105779924A (en) * | 2016-03-24 | 2016-07-20 | 上海交通大学 | Method for manufacturing high-temperature insulated wire by spraying thermal barrier coating to wrap surface of Pt metal wire |
| CN107881457A (en) * | 2017-11-13 | 2018-04-06 | 周宇杰 | A kind of temperature sensor fire resistant anticorrosive wear-resistant coating, temperature sensor and application |
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