CN101100745A - Nano ceramic coat processing method based on substrate thermostatic control and thermostatic control system - Google Patents
Nano ceramic coat processing method based on substrate thermostatic control and thermostatic control system Download PDFInfo
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- CN101100745A CN101100745A CNA2007100244557A CN200710024455A CN101100745A CN 101100745 A CN101100745 A CN 101100745A CN A2007100244557 A CNA2007100244557 A CN A2007100244557A CN 200710024455 A CN200710024455 A CN 200710024455A CN 101100745 A CN101100745 A CN 101100745A
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- 239000000758 substrate Substances 0.000 title claims abstract description 14
- 239000000919 ceramic Substances 0.000 title claims description 39
- 238000003672 processing method Methods 0.000 title claims description 10
- 238000005507 spraying Methods 0.000 claims abstract description 20
- 239000011248 coating agent Substances 0.000 claims abstract description 19
- 238000000576 coating method Methods 0.000 claims abstract description 19
- 238000001816 cooling Methods 0.000 claims abstract description 18
- 239000000463 material Substances 0.000 claims abstract description 10
- 239000011159 matrix material Substances 0.000 claims description 37
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 25
- 239000007789 gas Substances 0.000 claims description 23
- 239000000843 powder Substances 0.000 claims description 22
- 239000007921 spray Substances 0.000 claims description 22
- 239000007788 liquid Substances 0.000 claims description 12
- 229910052757 nitrogen Inorganic materials 0.000 claims description 12
- 238000012545 processing Methods 0.000 claims description 12
- 239000007787 solid Substances 0.000 claims description 9
- 230000004913 activation Effects 0.000 claims description 3
- 239000000956 alloy Substances 0.000 claims description 3
- 229910045601 alloy Inorganic materials 0.000 claims description 3
- 239000008187 granular material Substances 0.000 claims description 3
- 238000003780 insertion Methods 0.000 claims description 3
- 230000037431 insertion Effects 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 claims description 2
- 238000007750 plasma spraying Methods 0.000 abstract description 5
- 238000005524 ceramic coating Methods 0.000 abstract description 3
- 239000002086 nanomaterial Substances 0.000 abstract description 2
- 238000002844 melting Methods 0.000 abstract 2
- 238000000034 method Methods 0.000 description 21
- 239000002245 particle Substances 0.000 description 6
- 238000002360 preparation method Methods 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000000112 cooling gas Substances 0.000 description 2
- 239000002105 nanoparticle Substances 0.000 description 2
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 238000004381 surface treatment Methods 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 229910001928 zirconium oxide Inorganic materials 0.000 description 2
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000009766 low-temperature sintering Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000593 microemulsion method Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000005488 sandblasting Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 238000001694 spray drying Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
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Abstract
An invention relates to nano ceramic coating on a substrate with temperature controlled stably and constant temperature system concerned. Coacervated nano material is used as coating material by plasma spraying and laser re-melting. Excellent coating is obtained by controlling temperatures in spraying and re-melting stages. Its cooling apparatus is simple and reliable, and costs low.
Description
Technical field
The present invention relates to a kind of material surface treatment method and relevant Controlling System, especially a kind of material surface nano ceramic coat processing method and relevant Controlling System thereof, specifically a kind of based on thermostatically controlled nano ceramic coat processing method of matrix and thermostatic control system.
Background technology
In industry such as Aeronautics and Astronautics, national defence, automobile, boats and ships, chemical industry, iron and steel, the application of ceramic coating more and more widely.The pottery of various heterogeneities can greatly improve performances such as wear-resisting, heat-resisting, corrosion-resistant, the high temperature oxidation resisting of matrix component, anti-fretting wear.Nano ceramics has good comprehensive mechanical performance because of it has than conventional ceramic, causes various countries' extensive concern in recent years, becomes one of main direction of advanced ceramics investigation of materials.
Because the temperature in the plasma thermal sprayed course of processing is very high, be the method that is most widely used at present therefore preparing aspect the ceramic structure coating.In recent years, reconstruct nano-ceramic powder technology obtained very fast development, promptly by certain method the powder particle of common nanoscale was processed into the agglomerating particles of micro-meter scale.Reconfiguration technique mainly contains spray-drying process, melten gel-gel method, microemulsion method etc., and treated nano ceramics coacervate particle has tens to up to a hundred microns size usually.Because it is big than the raw nanoparticle quality, surface energy is little, good fluidity and loose density are big, therefore can carry out spray process under the plasma hot conditions.Abroad, apply for a patent mostly studying comparative maturity aspect this, as the patent disclosure of the U.S. inframat company method (nanometer reunion powder preparing, US patent 6025034) of mass preparation used for hot spraying nanometer reunion powder.Detailed process is: at first common nanoparticle is made into colloidal suspensions, after adding certain additive, this colloidal suspensions is carried out spraying drying.Small-particle that then will obtain above successively carries out low-temperature sintering about 250 ℃ and about 1000 ℃ high temperature sintering, obtains globular micron order nanometer reunion ceramic particle.Domesticly also carried out correlative study,, disclose the method for preparing the zirconium oxide agglomerate body as the patent application " preparation method of used for hot spraying nanoclusters aggressiveness Zirconium oxide powder " (200410061306.4) of Wuhan University of Technology just like Wuhan Inst. of Material Protection etc.Some have also proposed to spray with conventional spray paint equipment the method for nanoclusters aggressiveness powdered preparation nano ceramic coat as " preparation method of powder hot spray nano-material coating " (02129592.1) based on the patent application of the application of such material.Therefore utilize conventional spray paint equipment spraying nanoclusters aggressiveness powdered preparation nano ceramic coat to become one of a kind of novel surface treatment method, but temperature is very high during owing to plasma spraying and laser remolten, can produce certain influence to substrate performance and ceramic crystalline grain growth, and then influence final coating quality, cause product percent of pass lower, still do not have good solution at present.
Summary of the invention
One of purpose of the present invention is the problem that influences final coating quality at the matrix temperature distortion that existing ceramic nano coat processing method exists, and invents a kind of based on the thermostatically controlled nano ceramic coat processing method of matrix.
Two of purpose of the present invention is that a kind of structure of design is very simple, easy to use, and the very low thermostatic control system of cost is to reduce in spraying and the reflow process high temperature to the influence of matrix.
The present invention realizes that the technical scheme of one of purpose is:
A kind of based on the thermostatically controlled nano ceramic coat processing method of matrix, it is characterized in that:
At first to matrix surface is purified, activation treatment;
Next utilizes plasma spray apparatus at matrix surface spraying one deck nickel-base alloy powder powder material tack coat;
The 3rd, after the tack coat cooling, at tie layer surface spraying nano ceramics aggregate powder of AI/Yt, open temperature controlling system simultaneously with plasma spray apparatus, make matrix represent temperature maintenance between 60～200 ℃, finish up to spraying;
The 4th, after the spraying of nano ceramics aggregate powder of AI/Yt finished, the coating that re-uses high power laser article on plasma spraying gained was carried out the remelting processing, opens temperature controlling system simultaneously, and substrate temperature is also maintained between 60～200 ℃, finishes up to remelting.
Described nano ceramics aggregate powder of AI/Yt granulometric range is 15～120 μ m, and its primary granule mean sizes is 40 nanometers, and pattern is characterized by sphere.
The present invention realizes that two technical scheme of purpose is:
The matrix thermostatic control system that uses in a kind of nano ceramic coat processing, it is characterized in that it mainly is made up of source of the gas 1, sealed can 2, liquid nitrogen 3, cooling chamber 4, liquid nitrogen 3 is potted in the sealed can 2, source of the gas 1 is connected with inlet pipe 5, the inlet mouth of inlet pipe 5 one ends links to each other with the air outlet of source of the gas 1, in the liquid nitrogen 3 in the air outlet insertion sealed can 2 of the other end; Cooling chamber 4 is connected with escape pipe 6, and the inlet mouth of escape pipe 6 one ends inserts the top of the liquid nitrogen 3 in the sealed can 2, and the air outlet of its other end links to each other with the inlet mouth of cooling chamber 4, and cooling chamber 4 directly or indirectly contacts with matrix 7.
Wherein said source of the gas 1 can be gas blower.
Described source of the gas 1 is connected with temperature-control device, this temperature-control device mainly is made up of temperature sensor 8, intelligent temperature controller 9 and solid state relay 10, near temperature sensor 8 or be directly installed on the matrix 7 or be installed in the matrix 7, the output of temperature sensor 8 links to each other with the input of intelligent temperature controller 9, an output of intelligent temperature controller 9 links to each other with the control end of solid state relay 10, and the output of solid state relay 10 links to each other with the trip switch of source of the gas 1.
Beneficial effect of the present invention:
The present invention compared with prior art has following characteristics:
1, the present invention selects for use the nano ceramics coacervate to carry out spray process as spray material, in spraying and reflow process, introduce process for cooling restriction nano ceramics grain growth simultaneously, reduced influence to substrate performance, thus the high conformity of the coating of gained, stable performance.
2, refrigerating unit of the present invention has simple in structurely, uses, easily manufactured the advantage that cost is low.
Description of drawings
Fig. 1 is the structural representation of thermostatic control system of the present invention.
Fig. 2 is the electric principle schematic of temperature controlling system of the present invention.
Embodiment
The present invention is further illustrated below in conjunction with drawings and Examples.
A kind of based on the thermostatically controlled nano ceramic coat processing method of matrix, the steps include:
At first to matrix surface is purified, activation treatment;
Next utilizes plasma spray apparatus at matrix surface spraying one deck nickel-base alloy powder powder material tack coat;
The 3rd, after the tack coat cooling, is 15～120 μ m with plasma spray apparatus in tie layer surface sprayed particle scope, the primary granule mean sizes is 40 nanometers, pattern is characterized by spheric nano ceramics aggregate powder of AI/Yt, open temperature controlling system simultaneously, substrate temperature is maintained between 60～200 ℃, finish up to spraying;
The 4th, after the spraying of nano ceramics aggregate powder of AI/Yt finished, the coating that re-uses high power laser equity gained was carried out the remelting processing, opens temperature controlling system simultaneously, and substrate temperature is also maintained between 60～200 ℃, finishes up to remelting.
This enforcement as shown in Figure 1, 2.
The present invention realizes that two technical scheme of purpose is:
The matrix thermostatic control system that uses in a kind of nano ceramic coat processing, it mainly is made up of source of the gas 1 (can adopt gas blower), sealed can 2, liquid nitrogen 3, cooling chamber 4, as shown in Figure 1, liquid nitrogen 3 is potted in the sealed can 2, source of the gas 1 is connected with inlet pipe 5, and the inlet mouth of inlet pipe 5 one ends links to each other with the air outlet of source of the gas 1, in the liquid nitrogen 3 in the air outlet insertion sealed can 2 of the other end, reducing valve 11 is installed, to prevent the excessive manufacturing potential safety hazard of gas blower pressure on the sealed can 2; Cooling chamber 4 is connected with escape pipe 6, and the inlet mouth of escape pipe 6 one ends inserts the top of the liquid nitrogen 3 in the sealed can 2, and the air outlet of its other end links to each other with the inlet mouth of cooling chamber 4, and cooling chamber 4 directly or indirectly contacts with matrix 7.Source of the gas 1 is controlled by temperature-control device, as shown in Figure 2, this temperature-control device is mainly by temperature sensor 8 (can adopt K type standard couple to be realized), intelligent temperature controller 9 (can adopt XMT628 type intelligence to realize from the PID industry adjusting apparatus of adjusting) and solid state relay 10 (can adopt conventional commercially available prod to be realized) are formed, near temperature sensor 8 or be directly installed on the matrix 7 or be installed in the matrix 7, the output of temperature sensor 8 links to each other with the input of intelligent temperature controller 9, an output of intelligent temperature controller 9 links to each other with the control end of solid state relay 10, and the output of solid state relay 10 links to each other with the trip switch of source of the gas 1.High temperature generating unit among Fig. 1 during 12 expression plasma sprayings or laser remoltens, 13 expression gas blowers, 14 expression control computers.
Be further described below in conjunction with a concrete example.
On the thick steel of 4mm (being matrix) surface, adopt plasma spraying nano ceramics coacervate Al
2O
3+ 13TiO
2Powder.Its operation steps is as follows:
1. oil removing is carried out on the steel matrix surface, the processing of sandblasting.Adopt subsonic speed to sandblast rifle with the pressure of 1MPa, the flow of 3kg/min carries out alligatoring, increases the contact area of tack coat and matrix.
2. the 3710 type plasma spray systems that use U.S. Praxair company to produce carry out spray process, at first the NiCoCrAlY of spraying 140 μ m thickness on matrix
2O
3Tack coat.Spray parameters such as table 1 are listed.
Table 1 tack coat spray parameters
3. on tack coat, spray nano ceramics coacervate Al
2O
3+ 13TiO
2Powder is opened temperature control and refrigerating unit, and continuous spraying time substrate temperature is controlled at below 100 ℃ (also can choose between 60～200 ℃ as required when specifically using).Table 2 has been listed the spray parameters of working lining.
Table 2 working lining spray parameters
4. spray-on coating is carried out laser remolten and handle, open temperature control and refrigerating unit simultaneously, continuous multiple tracks remelting time substrate temperature is controlled at below 100 ℃ (also can choose between 60～200 ℃ as required when specifically using).The laser apparatus of selecting for use produces 2KWCO for U.S. PRC Corporation
2Gas laser is selected rectangular light spot for use, spot size 5mm * 3mm, laser power 1000w, sweep velocity 0.3m/min, overlapping rate 0.3.
Table 3 is cooling temperature test-results tables to final grain-size and coating performance influence.
| Cooling gas flow (thermospray) | Cooling gas flow (remelting) | Substrate temperature | Grain-size | Microhardness | Wear resistance | The coating processing effect | ||
| 1 | Do not have | Do not have | ＞400℃ | 200nm | HV1650 | ⑤ | |
|
| 2 | ＜0.5L/Min | ＜0.3L/Min | ＞300℃ | 140nm | HV1720 | ④ | |
|
| 3 | 0.5-1L/Min | 0.3-0.8L/Min | 150-220 | 90nm | HV1790 | ③ | Normal process | |
| 4 | 1-1.5L/Min | 0.8-1.2L/Min | 80-150 | 70nm | HV1860 | ② | Can process, spray efficiency decreases |
| 5 | ＞2L/Min | ＞1.6L/Min | ＜60℃ | 60nm | HV1940 | 1. optimum | Spray efficiency greatly reduces, and can not prepare thick coating, and tiny crack increases |
As shown in Table 3, when substrate temperature is lower than 60 ℃, coating result is all undesirable when being higher than 200 ℃.As shown in Table 3, when substrate temperature is lower than 60 ℃, working (machining) efficiency greatly reduces, the coating thermal stresses is big, can not prepare thick ceramic coating, and the coating tiny crack increases during laser remolten; Nanophase content greatly reduces in the coating when substrate temperature is higher than 200 ℃, and the average crystal grain size has exceeded 100nm, can not prepare satisfactory nano ceramic coat.Therefore, exceeding this temperature range, to prepare the gained coating result all undesirable.
Claims (6)
1, a kind of based on the thermostatically controlled nano ceramic coat processing method of matrix, it is characterized in that:
At first to matrix surface purify, activation treatment;
Next utilizes plasma spray apparatus at matrix surface spraying one deck nickel-base alloy powder powder material tack coat;
The 3rd, after the tack coat cooling, at tie layer surface spraying nano ceramics aggregate powder of AI/Yt, open temperature controlling system simultaneously with plasma spray apparatus, make matrix represent temperature maintenance between 60～200 ℃, finish up to spraying;
The 4th, after the spraying of nano ceramics aggregate powder of AI/Yt finished, the coating that re-uses high power laser equity gained was carried out the remelting processing, opens temperature controlling system simultaneously, and substrate temperature is also maintained between 60～200 ℃, finishes up to remelting.
2, require according to claim 1 described based on the thermostatically controlled nano ceramic coat processing method of matrix, it is characterized in that described nano ceramics aggregate powder of AI/Yt granulometric range is 15～120 μ m, its primary granule mean sizes is 40 nanometers, and pattern is characterized by sphere.
3, the matrix thermostatic control system that uses in a kind of nano ceramic coat processing, it is characterized in that it mainly is made up of source of the gas (1), sealed can (2), liquid nitrogen (3), cooling chamber (4), liquid nitrogen (3) is potted in the sealed can (2), source of the gas (1) is connected with inlet pipe (5), the inlet mouth of inlet pipe (5) one ends links to each other with the air outlet of source of the gas (1), in the liquid nitrogen (3) in the air outlet insertion sealed can (2) of the other end; Cooling chamber (4) is connected with escape pipe (6), the inlet mouth of escape pipe (6) one ends inserts the top of the liquid nitrogen (3) in the sealed can (2), the air outlet of its other end links to each other with the inlet mouth of cooling chamber (4), and cooling chamber (4) directly or indirectly contacts with matrix (7).
4, the matrix thermostatic control system that uses in the nano ceramic coat processing according to claim 3 is characterized in that described source of the gas (1) is a gas blower.
5, the matrix thermostatic control system that uses in the nano ceramic coat processing according to claim 3, it is characterized in that described source of the gas (1) is connected with temperature-control device, this temperature-control device is mainly by temperature sensor (8), intelligent temperature controller (9) and solid state relay (10) are formed, near temperature sensor (8) or be directly installed on matrix (7) and go up or be installed in the matrix (7), the output of temperature sensor (8) links to each other with the input of intelligent temperature controller (9), an output of intelligent temperature controller (9) links to each other with the control end of solid state relay (10), and the output of solid state relay (10) links to each other with the trip switch of source of the gas (1).
6, the matrix thermostatic control system that uses in the nano ceramic coat processing according to claim 3 is characterized in that being equipped with on the described sealed can (2) reducing valve (11).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100244557A CN100543184C (en) | 2007-06-18 | 2007-06-18 | Based on thermostatically controlled nano ceramic coat processing method of matrix and thermostatic control system |
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|---|---|---|---|
| CNB2007100244557A CN100543184C (en) | 2007-06-18 | 2007-06-18 | Based on thermostatically controlled nano ceramic coat processing method of matrix and thermostatic control system |
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| Publication Number | Publication Date |
|---|---|
| CN101100745A true CN101100745A (en) | 2008-01-09 |
| CN100543184C CN100543184C (en) | 2009-09-23 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109112461A (en) * | 2018-09-30 | 2019-01-01 | 常州大学 | A kind of method that laser two-step method prepares aluminium-based amorphous alloy composite ceramic coat in ocean platform steel surface |
| CN110144542A (en) * | 2019-06-21 | 2019-08-20 | 南昌航空大学 | A kind of preparation method of supersonic flame spraying system and iron-based amorphous coating |
| CN112760641A (en) * | 2020-12-26 | 2021-05-07 | 南京中科煜宸激光技术有限公司 | Laser cladding process and laser cladding repairing and processing system based on thermal aging treatment |
| CN115418601A (en) * | 2022-08-26 | 2022-12-02 | 南京市特种设备安全监督检验研究院 | High-frequency induction heating heavy fusible link and method for preparing anti-explosion coating of anti-explosion forklift fork |
-
2007
- 2007-06-18 CN CNB2007100244557A patent/CN100543184C/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109112461A (en) * | 2018-09-30 | 2019-01-01 | 常州大学 | A kind of method that laser two-step method prepares aluminium-based amorphous alloy composite ceramic coat in ocean platform steel surface |
| CN109112461B (en) * | 2018-09-30 | 2020-10-09 | 常州大学 | Method for preparing aluminum-based amorphous composite ceramic coating on surface of ocean platform steel by laser two-step method |
| CN110144542A (en) * | 2019-06-21 | 2019-08-20 | 南昌航空大学 | A kind of preparation method of supersonic flame spraying system and iron-based amorphous coating |
| CN110144542B (en) * | 2019-06-21 | 2021-06-15 | 南昌航空大学 | Supersonic flame spraying system and preparation method of iron-based amorphous coating |
| CN112760641A (en) * | 2020-12-26 | 2021-05-07 | 南京中科煜宸激光技术有限公司 | Laser cladding process and laser cladding repairing and processing system based on thermal aging treatment |
| CN115418601A (en) * | 2022-08-26 | 2022-12-02 | 南京市特种设备安全监督检验研究院 | High-frequency induction heating heavy fusible link and method for preparing anti-explosion coating of anti-explosion forklift fork |
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| Publication number | Publication date |
|---|---|
| CN100543184C (en) | 2009-09-23 |
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