CN103592329A - Method for testing heat insulation temperature of thermal barrier coating - Google Patents
Method for testing heat insulation temperature of thermal barrier coating Download PDFInfo
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- CN103592329A CN103592329A CN201310508093.4A CN201310508093A CN103592329A CN 103592329 A CN103592329 A CN 103592329A CN 201310508093 A CN201310508093 A CN 201310508093A CN 103592329 A CN103592329 A CN 103592329A
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- thermal barrier
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- 238000009413 insulation Methods 0.000 title claims abstract description 32
- 238000000034 method Methods 0.000 title claims abstract description 20
- 239000012720 thermal barrier coating Substances 0.000 title claims abstract description 19
- 238000012360 testing method Methods 0.000 title claims abstract description 7
- 239000011248 coating agent Substances 0.000 claims abstract description 27
- 238000000576 coating method Methods 0.000 claims abstract description 27
- 238000003466 welding Methods 0.000 claims abstract description 20
- 230000000694 effects Effects 0.000 claims abstract description 8
- 238000010438 heat treatment Methods 0.000 claims abstract description 8
- 238000001816 cooling Methods 0.000 claims abstract description 4
- 239000000919 ceramic Substances 0.000 claims description 10
- 239000011159 matrix material Substances 0.000 claims description 7
- 229910005883 NiSi Inorganic materials 0.000 claims description 6
- QFXZANXYUCUTQH-UHFFFAOYSA-N ethynol Chemical group OC#C QFXZANXYUCUTQH-UHFFFAOYSA-N 0.000 claims description 4
- 230000006641 stabilisation Effects 0.000 claims description 4
- 238000005516 engineering process Methods 0.000 claims description 3
- 239000007921 spray Substances 0.000 claims description 3
- 238000010998 test method Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract 1
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 4
- 238000005507 spraying Methods 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 2
- 239000012774 insulation material Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000007750 plasma spraying Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- 229910006295 Si—Mo Inorganic materials 0.000 description 1
- LIXXICXIKUPJBX-UHFFFAOYSA-N [Pt].[Rh].[Pt] Chemical compound [Pt].[Rh].[Pt] LIXXICXIKUPJBX-UHFFFAOYSA-N 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- VNNRSPGTAMTISX-UHFFFAOYSA-N chromium nickel Chemical compound [Cr].[Ni] VNNRSPGTAMTISX-UHFFFAOYSA-N 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 239000010431 corundum Substances 0.000 description 1
- 238000013480 data collection Methods 0.000 description 1
- 238000005238 degreasing Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910001120 nichrome Inorganic materials 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000005488 sandblasting Methods 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
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Abstract
The invention discloses a method for testing heat insulation temperature of a thermal barrier coating. The method comprises the following steps: (1) respectively welding K-type thermocouples on backs of a coating sample and a coating-free sample of a same base material, and respectively and fixedly mounting the thermocouples in two through holes of an improved heat insulation furnace door of a resistance furnace, wherein the backs of the samples are directly contacted with the atmosphere, and the front surface of each sample faces a hearth; (2) mounting two S-shaped thermocouples on the heat insulation furnace door, wherein a contact of each S-shaped thermocouple is tightly attached to the front center of one sample; (3) electrifying and heating a resistance furnace, transmitting a temperature signal to a digital temperature recorder through the S-shaped thermocouples, stopping heating when the internal furnace temperature reaches 1100 DEG C and is stabilized for a period of time, performing furnace cooling on the samples, and drawing a temperature curve according to temperature data of the temperature recorder, wherein the heat insulation effect DeltaT of the thermal barrier coating is the difference of the back temperature of the coating-free sample and the back temperature of the coating sample.
Description
Technical field
The present invention relates to a kind of measuring technique of thermal barrier coating heat-proof quality, be specifically related to the measuring method of the heat insulation temperature of a kind of thermal barrier coating.
Background technology
At present, the method that thermal barrier coating temperature differential method is surveyed heat-proof quality has: flame flame stream method, specifically in graphite or other matrix surface spraying one deck coating, oxyacetylene torch heated sample surface, temperature with thermocouple measurement sample surfaces and the back side, the difference of the temperature before and after sample is heat insulation temperature, the method shortcoming is there is no comparative sample, and the heat time is short, sample surfaces and back temperature are short stabilization time, also easily be subject to the impact of surrounding environment, can not test preferably the heat insulation temperature of thermal barrier coating.
Summary of the invention
In order to represent quantitatively the variation of thermal barrier coating heat-proof quality, explore better the Changing Pattern of heat-proof quality, the object of this invention is to provide a kind of heat insulation curve of resistance furnace test sample that adopts to obtain the method for the heat insulation temperature of thermal barrier coating.
For reaching above object, the present invention takes following technical scheme to be achieved:
A method of testing the heat insulation temperature of thermal barrier coating, is characterized in that, comprises the steps:
(1) having coating sample and welding respectively K type thermopair without the back side of coating sample same matrix material, then be fixed on respectively in two through holes of the improved adiabatic fire door of resistance furnace, the back side of sample directly contacts with atmosphere, sample above towards burner hearth;
(2) two S type thermopairs are housed on adiabatic fire door, the contact of every S type thermopair is close to the front center of a sample, is responsible for measuring the surface temperature of sample; The K type thermopair of sample back side welding is responsible for measuring the temperature at the sample back side;
(3) to resistance furnace energising heating, S type thermopair is sent to digital temperature registering instrument by temperature signal, in stove, temperature reaches 1100 ℃, and after a period of stabilisation, stop heating, sample is cooling with stove, and the temperature data of moisture recorder is drawn to temperature curve, and the effect of heat insulation Δ T of thermal barrier coating is exactly without the back temperature of coating sample and back temperature poor that has coating sample.
In said method, the welding technology of described K type thermopair 7 is as follows:
A, by oxyacetylene torch spray gun welding for NiCr-NiSi silk;
B, the NiCr-NiSi contact after welding is welded in after sample with micro capacitance spot welding instrument.
The described rate of heat addition is 20 ℃/min.
Two through holes of described improved adiabatic fire door, its one end towards fire door the inside is hydraucone, this hydraucone is positioned on the boss of fire door the inside, equal ceramic embedded pipe in two through holes, sample is fixed on ceramic pipe end, near the hydraucone of through hole, described S type thermopair pierces into hydraucone from boss one side.
Compare with existing flame flame stream method, advantage of the present invention is:
1, before sample, S type thermopair directly contacts sample center, and sample back side welding K type thermopair, can measure before sample and the temperature at the back side really, can measure more accurately the heat insulation temperature of coating.
2, comparative sample is set, can obtain more accurately the heat insulation temperature that same matrix sample has or not thermal barrier coating, and effect of heat insulation is more directly perceived.
3, owing to using the method, coating is heated state, so the method not only can measure original effect of heat insulation, also can measure coating after certain times of thermal cycle, the heat insulation temperature variations of coating.
Accompanying drawing explanation
Below in conjunction with the drawings and the specific embodiments, the present invention is described in further detail.
Fig. 1 is the structural drawing of the heat insulation fire door of resistance furnace involved in the present invention.
Fig. 2 is the heat insulation fire door cut-open view of Fig. 1.
In Fig. 1, Fig. 2: 1, fire door; 2, S type thermopair; 3, boss; 4, hydraucone; 5, sample; 6, ceramic pipe; 7, K type thermopair; 8, insulation material; 9, burner hearth.
Fig. 3 is the heat insulation curve of Supersonic Plasma Spraying thermal barrier coating of embodiment of the present invention sample.
Embodiment
As Fig. 1, shown in Fig. 2, experimental provision of the present invention is conventional resistance furnace (heating can adopt Elema or Si-Mo rod), adopted a kind of improved heat insulation fire door, comprise fire door 1, fire door insulation material 8 is fiber alumina silicate, fire door the inside (towards the one side of burner hearth 9) is provided with a boss 3, on boss, cut a hole two through holes to fire door outside, by ceramic pipe 6 from inlaying outdoors in inlet hole, sample 5 is contained in ceramic pipe 6 ends, hydraucone 4 positions near through hole are also fixing, hydraucone before sample is provided with S type thermopair 2(and pierces into from boss 3 one sides), a welding K type thermopair 7 in center after sample.
Before experiment, prepare two samples, matrix material is height and closes 3030, diameter 30mm, and thickness 3mm, carries out purified treatment with acetone to matrix, sample is put into the beaker that fills acetone and carry out the clean 15min of ultrasonic vibration, carries out surface degreasing.Then use suction sand-blasting machine to process the surface of one of them sample, carry out sandblast (corundum sand), increase surfaceness to increase cohesive strength.The matrix sample that this is handled well is fixed on spraying platform, adopts Supersonic Plasma Spraying equipment spraying ceramic coat.Without coating sample, only need clean oil removing, after two samples, weld respectively after K type thermopair, pack in ceramic pipe 6, with ceramic push pipe, push pipe lock silk and spring (not shown in FIG.), fix sample.The sample back side directly contacts with atmosphere, wherein has the coat side of coating sample towards burner hearth; Two S type thermopairs (platinum-rhodium-platinum thermocouple) contact is close to sample front center, is responsible for measuring specimen surface temperature; The K type thermopair of center, sample back side welding is responsible for measuring the temperature that has the sample back side.
The welding process of K type thermopair 7 is as follows:
A, by oxyacetylene torch spray gun welding for NiCr, NiSi silk;
B, the NiCr-NiSi contact after welding is welded in after sample with micro capacitance spot welding instrument.
During measurement, the rate of heat addition of resistance furnace can be 20 ℃/min, and S type thermopair is sent to digital temperature registering instrument by temperature signal, can real-time data collection and displays temperature, when recording temperature, S type thermopair reaches 1100 ℃, and after a period of stabilisation, can stop heating, sample is cooling gradually.The data of moisture recorder input to computing machine, and the effect of heat insulation Δ T of coating is exactly temperature poor on two sides.
Two samples can obtain four temperature curves, respectively without coating sample surface temperature curve, coated sample surface temperature curve, without coating sample back temperature curve, coated sample back temperature curve, as shown in Figure 3, without coating sample surface temperature and coated sample surface temperature, maintain 1100 ℃, after stable without coating sample back temperature, being 991.2 ℃, is 900.7 ℃ after coated sample back temperature is stable, and recording the heat insulation temperature of coating is 90.5 ℃.Illustrate that under this kind of process conditions, coating effect of heat insulation is 90.5 ℃, effect of heat insulation is good, and the later stage can continue to measure the heat insulation temperature of coating after certain times of thermal cycle, in conjunction with coating micromechanism, can explore better coating heat-proof quality Changing Pattern.
Claims (4)
1. a method of testing the heat insulation temperature of thermal barrier coating, is characterized in that, comprises the steps:
(1) having coating sample and welding respectively K type thermopair without the back side of coating sample same matrix material, then be fixed on respectively in two through holes of the improved adiabatic fire door of resistance furnace, the back side of sample directly contacts with atmosphere, sample above towards burner hearth;
(2) two S type thermopairs are housed on adiabatic fire door, the contact of every S type thermopair is close to the front center of a sample, is responsible for measuring the surface temperature of sample; The K type thermopair of sample back side welding is responsible for measuring the temperature at the sample back side;
(3) to resistance furnace energising heating, S type thermopair is sent to digital temperature registering instrument by temperature signal, in stove, temperature reaches 1100 ℃, and after a period of stabilisation, stop heating, sample is cooling with stove, and the temperature data of moisture recorder is drawn to temperature curve, and the effect of heat insulation Δ T of thermal barrier coating is exactly without the back temperature of coating sample and back temperature poor that has coating sample.
2. the method for the heat insulation temperature of test thermal barrier coating as claimed in claim 1, is characterized in that, the welding technology of described K type thermopair is as follows:
A, by oxyacetylene torch spray gun welding for NiCr-NiSi silk;
B, the NiCr-NiSi contact after welding is welded in after sample with micro capacitance spot welding instrument.
3. the method for the heat insulation temperature of test thermal barrier coating as claimed in claim 1, is characterized in that, the described rate of heat addition is 20 ℃/min.
4. the method for the heat insulation temperature of test thermal barrier coating as claimed in claim 1, it is characterized in that, two through holes of described improved adiabatic fire door, its one end towards fire door the inside is hydraucone, this hydraucone is positioned on the boss of fire door the inside, equal ceramic embedded pipe in two through holes, and sample is fixed on ceramic pipe end, near the hydraucone of through hole, described S type thermopair pierces into hydraucone from boss one side.
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| CN201310508093.4A CN103592329B (en) | 2013-10-24 | 2013-10-24 | A kind of method of testing thermal barrier coating adiabatic temperature |
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| CN201310508093.4A CN103592329B (en) | 2013-10-24 | 2013-10-24 | A kind of method of testing thermal barrier coating adiabatic temperature |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104777187A (en) * | 2014-12-05 | 2015-07-15 | 襄阳航泰动力机器厂 | Thermal barrier coating heat insulation performance testing device |
| CN104792819A (en) * | 2015-04-16 | 2015-07-22 | 东方电气集团东方汽轮机有限公司 | Heat barrier coating heat insulation effect testing device for fuel machine |
| CN105301048A (en) * | 2015-11-17 | 2016-02-03 | 中国航天科技集团公司第四研究院第四十一研究所 | Thermocouple pre-embedded thermal insulation coating test-piece interface temperature testing method |
| CN106324028A (en) * | 2016-10-22 | 2017-01-11 | 湖南省冶金材料研究院 | Testing device and testing method for determining thermal insulation effect of thermal barrier coating |
| CN106353361A (en) * | 2016-09-29 | 2017-01-25 | 哈尔滨工业大学 | Method for testing laser absorptivity of material with coating layer |
| CN107941848A (en) * | 2017-10-20 | 2018-04-20 | 北京绿时顺风科技有限公司 | The apparatus and method for directly measuring block materials thermal barrier coating adiabatic temperature |
| CN110501085A (en) * | 2018-12-11 | 2019-11-26 | 中国航空工业集团公司北京长城计量测试技术研究所 | A kind of thermal barrier coating heat-proof quality measurement method based on film thermometric |
| CN114234645A (en) * | 2022-02-24 | 2022-03-25 | 山东慧敏科技开发有限公司 | High-temperature convection radiation heat transfer experimental device and experimental method |
| CN117969597A (en) * | 2024-03-28 | 2024-05-03 | 江苏乐萌精密科技有限公司 | Device and method for detecting heat insulating capacity of thermal barrier coating |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104777187A (en) * | 2014-12-05 | 2015-07-15 | 襄阳航泰动力机器厂 | Thermal barrier coating heat insulation performance testing device |
| CN104792819A (en) * | 2015-04-16 | 2015-07-22 | 东方电气集团东方汽轮机有限公司 | Heat barrier coating heat insulation effect testing device for fuel machine |
| CN105301048A (en) * | 2015-11-17 | 2016-02-03 | 中国航天科技集团公司第四研究院第四十一研究所 | Thermocouple pre-embedded thermal insulation coating test-piece interface temperature testing method |
| CN105301048B (en) * | 2015-11-17 | 2018-01-09 | 中国航天科技集团公司第四研究院第四十一研究所 | A kind of heat insulating coat test specimen interface temperature method of testing of pre-buried thermocouple |
| CN106353361A (en) * | 2016-09-29 | 2017-01-25 | 哈尔滨工业大学 | Method for testing laser absorptivity of material with coating layer |
| CN106324028A (en) * | 2016-10-22 | 2017-01-11 | 湖南省冶金材料研究院 | Testing device and testing method for determining thermal insulation effect of thermal barrier coating |
| CN107941848A (en) * | 2017-10-20 | 2018-04-20 | 北京绿时顺风科技有限公司 | The apparatus and method for directly measuring block materials thermal barrier coating adiabatic temperature |
| CN110501085A (en) * | 2018-12-11 | 2019-11-26 | 中国航空工业集团公司北京长城计量测试技术研究所 | A kind of thermal barrier coating heat-proof quality measurement method based on film thermometric |
| CN114234645A (en) * | 2022-02-24 | 2022-03-25 | 山东慧敏科技开发有限公司 | High-temperature convection radiation heat transfer experimental device and experimental method |
| CN117969597A (en) * | 2024-03-28 | 2024-05-03 | 江苏乐萌精密科技有限公司 | Device and method for detecting heat insulating capacity of thermal barrier coating |
| CN117969597B (en) * | 2024-03-28 | 2024-05-31 | 江苏乐萌精密科技有限公司 | Device and method for detecting heat insulating capacity of thermal barrier coating |
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