CN106702303A - Nano-zirconia thermal barrier coating material on stainless steel surface, and preparation process thereof - Google Patents
Nano-zirconia thermal barrier coating material on stainless steel surface, and preparation process thereof Download PDFInfo
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- CN106702303A CN106702303A CN201510508634.2A CN201510508634A CN106702303A CN 106702303 A CN106702303 A CN 106702303A CN 201510508634 A CN201510508634 A CN 201510508634A CN 106702303 A CN106702303 A CN 106702303A
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Abstract
The invention provides a nano-zirconia thermal barrier coating material on a stainless steel surface, and a preparation process thereof. The preparation process comprises three phases, that is, a pre-treatment phase, a transition layer preparation phase and a nano-thermal barrier coating preparation phase. According to the preparation process provided by the invention, a nano-thermal barrier coating with high microhardness, excellent wear resistance, and high oxidation resistance and thermal shock resistance is formed on the stainless steel surface by means of plasma spraying; the raw materials are cheap and common; the process is simple and low in cost; and the nano-thermal barrier coating is beneficial to industrialized production.
Description
Technical field
The present invention relates to a kind of stainless steel surface nano zirconia of heat barrier coat material and its preparation technology, belong to plasma spraying technology field.
Background technology
Tube-baking machine is the visual plant in fluorescent tube production line, its critical piece（Steel pipe）Material be 316L stainless steels.The hot environment that is operated in 1000 DEG C or so due to it and thermal cycling loads are born, therefore be easy to high-temperature oxydation and thermal fatigue failure, cause to stop production and equipment scrapping.Additionally, thermal source used by tube-baking machine is natural gas, because the thermal conductivity of stainless steel itself is higher, therefore radiating is than very fast.If stainless steel pipe surface does not have thermal barrier coating, more natural gases will be consumed, so as to waste the energy, discharge more greenhouse gases.So, the surfacecti proteon problem of the equipment key part in the urgent need to address.The present invention prepares nanometer zirconia heat barrier coating by plasma spraying technology in 316L stainless steel surfaces, is expected to obviously improve the performance and used life of stainless steel tube.
Ceramic coating prepared by plasma spraying has the premium properties such as excellent rub resistance abrasion, anti-oxidant, anti-thermal shock, can provide comprehensive effective protection to metal parts, is widely used in many fields.But conventional oxidation zirconium thermal barrier coating prepared by plasma spraying（That is micron order coating）There is also some shortcomings, the high temperature oxidation resistance of such as coating is poor, be susceptible to thermal fatigue failure, and these shortcomings seriously limit the range of application of plasma spraying ceramic coat.
The content of the invention
Above-mentioned deficiency present in conventional oxidation zirconium heat barrier coat material technology is prepared to solve plasma spraying, the invention provides a kind of stainless steel surface nano zirconia of heat barrier coat material and its preparation technology.
To reach goal of the invention, the technical solution adopted in the present invention is：A kind of stainless steel surface nano zirconia of heat barrier coat material and its preparation technology, the preparation technology include three phases, i.e. pretreatment stage, prepare the transition zone stage and prepare the nanostructured thermal barrier coating stage, wherein：
（1）Pretreatment stage：Ultrasonic wave cleans stainless steel base to remove oxide, greasy dirt and other dirts on surface, then carries out blasting treatment to specimen surface using jet absorption type sand-blasting machine, roughened surface is cleaned by ultrasonic again then, to remove residual debris；
The stainless steel base is 316L stainless steels, is made up of C, Si, Mn, P, S, Cr, Ni, Mo element, and the percentage composition of each component is：C≤0.03%, Si≤1.00%, Mn≤2.00%, P≤0.035%, S≤0.030%, Cr=16.0-18.0%, Ni=12.0-15.0%, Mo=2.0-3.0%；
（2）Prepare the transition zone stage：Spraying operation, about 50~90 μm of the nickel alclad coating layer thickness of spraying are directly carried out on by the matrix sample of pretreatment using plasma spraying equipment；
The plasma spray coating process parameter of the nickel alclad transition zone is：Sprayed on material is KF-2 Al contained Nis end, primary air amount 40L/h, powder feeding pressure 0.4MPa, 100 ~ 150mm of spray distance；
（3）Prepare the nanostructured thermal barrier coating stage：Nanostructured thermal barrier coating is prepared using plasma spraying on the transition zone for preparing；
The plasma spray coating process parameter is：30~45kW of spray power, primary air amount 40L/h, powder feeding pressure 0.4MPa, 80 ~ 100mm of spray distance；
It is nanoscale zirconia ceramic powders 8wt.% Y to prepare the material used by nanostructured thermal barrier coating2O3-ZrO2（Abbreviation nanometer 8YSZ feedings）.
Beneficial effects of the present invention are：（1）The microhardness of the nanostructured thermal barrier coating is high, excellent wear-resisting property；（2）Anti-oxidant and thermal shock resistance is preferable；（3）Raw material is cheap, common, and process is simple, cost are relatively low, beneficial to industrialized production.
Specific embodiment
With reference to concrete mode, the present invention is described further, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made belongs to the scope of the present invention.
Embodiment 1：
（1）Pretreatment stage：Ultrasonic wave cleans stainless steel base to remove oxide, greasy dirt and other dirts on surface, then carries out blasting treatment to specimen surface using jet absorption type sand-blasting machine, roughened surface is cleaned by ultrasonic again then, to remove residual debris；
（2）Prepare the transition zone stage：Spraying operation is directly carried out as sprayed on material with KF-2 Al contained Nis end on by the matrix sample of pretreatment using plasma spraying equipment, the transition zone that thickness is 50 μm, primary air amount 40L/h, powder feeding pressure 0.4MPa, spray distance 150mm is obtained；
（3）Prepare the nanostructured thermal barrier coating stage：8YSZ nanostructured thermal barrier coatings are prepared as sprayed on material using nanometer 8YSZ feedings used for plasma spraying on the transition zone for preparing, 45kW, primary air amount 40L/h, powder feeding pressure 0.4MPa, spray distance 90mm, gained nanostructured thermal barrier coating thickness are 0.15 mm.
Embodiment 2：
（1）Pretreatment stage：Ultrasonic wave cleans stainless steel base to remove oxide, greasy dirt and other dirts on surface, then carries out blasting treatment to specimen surface using jet absorption type sand-blasting machine, roughened surface is cleaned by ultrasonic again then, to remove residual debris；
（2）Prepare the transition zone stage：Spraying operation is directly carried out as sprayed on material with KF-2 Al contained Nis end on by the matrix sample of pretreatment using plasma spraying equipment, the transition zone that thickness is 70 μm, primary air amount 40L/h, powder feeding pressure 0.4MPa, spray distance 100mm is obtained；
（3）Prepare the nanostructured thermal barrier coating stage：8YSZ nanostructured thermal barrier coatings are prepared as sprayed on material using nanometer 8YSZ feedings used for plasma spraying on the transition zone for preparing, 40kW, primary air amount 40L/h, powder feeding pressure 0.4MPa, spray distance 80mm, gained nanostructured thermal barrier coating thickness are 0.15 mm.
Embodiment 3：
（1）Pretreatment stage：Ultrasonic wave cleans stainless steel base to remove oxide, greasy dirt and other dirts on surface, then carries out blasting treatment to specimen surface using jet absorption type sand-blasting machine, roughened surface is cleaned by ultrasonic again then, to remove residual debris；
（2）Prepare the transition zone stage：Spraying operation is directly carried out as sprayed on material with KF-2 Al contained Nis end on by the matrix sample of pretreatment using plasma spraying equipment, the transition zone that thickness is 90 μm, primary air amount 40L/h, powder feeding pressure 0.4MPa, spray distance 120mm is obtained；
（3）Prepare the nanostructured thermal barrier coating stage：8YSZ nanostructured thermal barrier coatings are prepared as sprayed on material using nanometer 8YSZ feedings used for plasma spraying on the transition zone for preparing, 35kW, primary air amount 40L/h, powder feeding pressure 0.4MPa, spray distance 100mm, gained nanostructured thermal barrier coating thickness are 0.15 mm.
Embodiment 4：
（1）Pretreatment stage：Ultrasonic wave cleans stainless steel base to remove oxide, greasy dirt and other dirts on surface, then carries out blasting treatment to specimen surface using jet absorption type sand-blasting machine, roughened surface is cleaned by ultrasonic again then, to remove residual debris；
（2）Prepare the transition zone stage：Spraying operation is directly carried out as sprayed on material with KF-2 Al contained Nis end on by the matrix sample of pretreatment using plasma spraying equipment, the transition zone that thickness is 80 μm, primary air amount 40L/h, powder feeding pressure 0.4MPa, spray distance 120mm is obtained；
（3）Prepare the nanostructured thermal barrier coating stage：8YSZ nanostructured thermal barrier coatings are prepared as sprayed on material using nanometer 8YSZ feedings used for plasma spraying on the transition zone for preparing, 30kW, primary air amount 40L/h, powder feeding pressure 0.4MPa, spray distance 90mm, gained nanostructured thermal barrier coating thickness are 0.15 mm.
Claims (4)
1. a kind of stainless steel surface nano zirconia of heat barrier coat material and its preparation technology, it is characterised in that the preparation technology includes three phases, i.e. pretreatment stage, prepares the transition zone stage and prepare the nanostructured thermal barrier coating stage, wherein：
（1）Pretreatment stage：Ultrasonic wave cleans stainless steel base to remove oxide, greasy dirt and other dirts on surface, then carries out blasting treatment to specimen surface using jet absorption type sand-blasting machine, roughened surface is cleaned by ultrasonic again then, to remove residual debris；
The stainless steel base is 316L stainless steels, is made up of C, Si, Mn, P, S, Cr, Ni, Mo element, and the percentage composition of each component is：C≤0.03%, Si≤1.00%, Mn≤2.00%, P≤0.035%, S≤0.030%, Cr=16.0-18.0%, Ni=12.0-15.0%, Mo=2.0-3.0%；
（2）Prepare the transition zone stage：Spraying operation, about 50~90 μm of the nickel alclad coating layer thickness of spraying are directly carried out on by the matrix sample of pretreatment using plasma spraying equipment；
（3）Prepare the nanostructured thermal barrier coating stage：Nanostructured thermal barrier coating is prepared using plasma spraying on the transition zone for preparing.
2. preparation technology according to claim 1, it is characterised in that：Step（2）Described in the plasma spray coating process parameter of nickel alclad transition zone be：Sprayed on material is KF-2 Al contained Nis end, primary air amount 40L/h, powder feeding pressure 0.4MPa, 100 ~ 150mm of spray distance.
3. preparation technology according to claim 1, it is characterised in that：Step（3）Described in plasma spray coating process parameter be：30~45kW of spray power, primary air amount 40L/h, powder feeding pressure 0.4MPa, 80 ~ 100mm of spray distance.
4. preparation technology according to claim 1, it is characterised in that：Step（3）Described in prepare material used by nanostructured thermal barrier coating be nanoscale zirconium powder 8wt.% Y2O3-ZrO2。
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510508634.2A CN106702303A (en) | 2015-08-19 | 2015-08-19 | Nano-zirconia thermal barrier coating material on stainless steel surface, and preparation process thereof |
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| CN201510508634.2A CN106702303A (en) | 2015-08-19 | 2015-08-19 | Nano-zirconia thermal barrier coating material on stainless steel surface, and preparation process thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109798399A (en) * | 2019-01-18 | 2019-05-24 | 北京动力机械研究所 | A kind of jet pipe changeover portion |
| CN110578143A (en) * | 2019-09-30 | 2019-12-17 | 中国科学院金属研究所 | Preparation of Al-ZrO by atmospheric plasma spraying2/Y2O3method for producing composite coating material |
| CN111118455A (en) * | 2020-01-03 | 2020-05-08 | 北京金轮坤天特种机械有限公司 | High-temperature-resistant anti-radiation silicon steel sheet and preparation method and application thereof |
-
2015
- 2015-08-19 CN CN201510508634.2A patent/CN106702303A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109798399A (en) * | 2019-01-18 | 2019-05-24 | 北京动力机械研究所 | A kind of jet pipe changeover portion |
| CN110578143A (en) * | 2019-09-30 | 2019-12-17 | 中国科学院金属研究所 | Preparation of Al-ZrO by atmospheric plasma spraying2/Y2O3method for producing composite coating material |
| CN110578143B (en) * | 2019-09-30 | 2021-10-22 | 中国科学院金属研究所 | Preparation of Al-ZrO by atmospheric plasma spraying2/Y2O3Method for producing composite coating material |
| CN111118455A (en) * | 2020-01-03 | 2020-05-08 | 北京金轮坤天特种机械有限公司 | High-temperature-resistant anti-radiation silicon steel sheet and preparation method and application thereof |
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