CN101748375A - Preparation process of AlSiY diffusion coating - Google Patents
Preparation process of AlSiY diffusion coating Download PDFInfo
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- CN101748375A CN101748375A CN200810229663A CN200810229663A CN101748375A CN 101748375 A CN101748375 A CN 101748375A CN 200810229663 A CN200810229663 A CN 200810229663A CN 200810229663 A CN200810229663 A CN 200810229663A CN 101748375 A CN101748375 A CN 101748375A
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- 239000011248 coating agent Substances 0.000 title claims abstract description 81
- 238000000576 coating method Methods 0.000 title claims abstract description 81
- 238000009792 diffusion process Methods 0.000 title claims abstract description 57
- 238000002360 preparation method Methods 0.000 title claims abstract description 17
- 238000005516 engineering process Methods 0.000 claims abstract description 16
- 238000007733 ion plating Methods 0.000 claims abstract description 14
- 238000000137 annealing Methods 0.000 claims abstract description 13
- 239000000463 material Substances 0.000 claims abstract description 12
- 238000000034 method Methods 0.000 claims abstract description 12
- 239000000758 substrate Substances 0.000 claims abstract description 8
- 238000000151 deposition Methods 0.000 claims description 26
- 230000008021 deposition Effects 0.000 claims description 10
- 229910000601 superalloy Inorganic materials 0.000 claims description 8
- 229910052727 yttrium Inorganic materials 0.000 claims description 8
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 6
- 239000011159 matrix material Substances 0.000 claims description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 3
- 238000005270 abrasive blasting Methods 0.000 claims description 3
- 239000008367 deionised water Substances 0.000 claims description 3
- 229910021641 deionized water Inorganic materials 0.000 claims description 3
- 239000003599 detergent Substances 0.000 claims description 3
- 238000010891 electric arc Methods 0.000 claims description 3
- 239000011521 glass Substances 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 238000002203 pretreatment Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 2
- 238000002791 soaking Methods 0.000 claims description 2
- 230000003647 oxidation Effects 0.000 abstract description 14
- 238000007254 oxidation reaction Methods 0.000 abstract description 14
- 229910045601 alloy Inorganic materials 0.000 abstract description 10
- 239000000956 alloy Substances 0.000 abstract description 10
- 230000007797 corrosion Effects 0.000 abstract description 7
- 238000005260 corrosion Methods 0.000 abstract description 7
- 239000011253 protective coating Substances 0.000 abstract description 2
- 229910052761 rare earth metal Inorganic materials 0.000 abstract description 2
- 238000003860 storage Methods 0.000 abstract description 2
- 238000009776 industrial production Methods 0.000 abstract 1
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 229910000943 NiAl Inorganic materials 0.000 description 7
- 229910052721 tungsten Inorganic materials 0.000 description 6
- 239000000203 mixture Substances 0.000 description 5
- 229910052759 nickel Inorganic materials 0.000 description 5
- 230000037396 body weight Effects 0.000 description 4
- 235000019786 weight gain Nutrition 0.000 description 4
- 229910052804 chromium Inorganic materials 0.000 description 3
- 125000004122 cyclic group Chemical group 0.000 description 3
- 229910052750 molybdenum Inorganic materials 0.000 description 3
- 230000003245 working effect Effects 0.000 description 3
- NPXOKRUENSOPAO-UHFFFAOYSA-N Raney nickel Chemical compound [Al].[Ni] NPXOKRUENSOPAO-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000000280 densification Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000013507 mapping Methods 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- 238000005275 alloying Methods 0.000 description 1
- 230000003064 anti-oxidating effect Effects 0.000 description 1
- 239000008199 coating composition Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- 239000003961 penetration enhancing agent Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000002000 scavenging effect Effects 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
- 230000002459 sustained effect Effects 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
- 238000001771 vacuum deposition Methods 0.000 description 1
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Abstract
The invention relates to a high-temperature protective coating technology, in particular to a preparation method of an AlSiY diffusion coating. By using the method, the AlSiY coating is deposited on a high-temperature alloy substrate by using an arc ion plating technology and the AlSiY diffusion coating is formed by using a vacuum diffusion annealing. The preparation process of the AlSiY diffusion coating has the advantages of good process repeatability, easy realization of industrial production and the like. The prepared coating has high strength with the substrate material, compact texture structure and controllable components, thus the Al storage phase content and the Si content in the coating surface can be effectively improved; and in addition, a rare earth element of Y is added, thereby the high-temperature oxidation and hot corrosion resistant performance can be improved and the service life of the coating can be effectively prolonged. The diffusion coating and the preparation method can be applied to the protection of a Ni-based high-temperature alloy.
Description
Technical field
The present invention relates to the high-temperature protection coating technology, specifically a kind of preparation method of AlSiY diffusion coating.
Background technology
The hot-end component of aircraft engine and gas turbine engine particularly turbine part is worked under high temperature, high speed and complex stress effect, not only require to have hot strength preferably, higher creep enduring quality, fatigue property and excellent structure stability also require body material to have higher resistance to high temperature oxidation and hot corrosion resistance.In a single day body material is directly sustained damage and cause mechanical property sharply to descend appears in oxidation and corrosion, thereby influences engine operation performance and work-ing life.Anti-oxidation and corrosive important technique measure are to apply supercoat at piece surface.Diffusion coating is by contacting with matrix alloy and alloying element inner with it reaction, thereby change the outer field protective coating of matrix, owing to form metallurgical binding with body material, has the bonding strength height, the weave construction densification, good with body material adaptability, can improve characteristics such as resistance to high temperature oxidation and hot corrosion resistance significantly, on engineering, use very extensive.Diffusion coating preparation method commonly used has that powder entrapping method, gas phase are oozed, slurry process etc., and these method technologies are simple, and cost is low, but labour intensity is big, the easy oxidation of penetration enhancer, and dust polluting environment is also harmful.Arc ion plating is a kind of vacuum coating technology that grows up on evaporation and sputter basis.The ionization level height, under negative bias was quickened, the depositional coating bonding force was better, dense structure, the sedimentation rate height, the target utilization height has been widely used in hard wear-resistant coating and MCrAlY high-temperature protection coating at present and has applied.
Summary of the invention
The object of the present invention is to provide a kind of good process repeatability that has, realize the preparation technology of the AlSiY diffusion coating of suitability for industrialized production easily, promptly adopt the arc ion plating (aip) deposition to add vacuum diffusion annealing and prepare the AlSiY diffusion coating.
To achieve these goals, technical scheme of the present invention is:
A kind of preparation technology of AlSiY diffusion coating on superalloy matrix material, by arc ion plating (AIP, i.e. Arc Ion Plating) method depositing Al SiY coating, adopts the method for vacuum diffusion annealing to prepare the AlSiY diffusion coating immediately.
Described AlSiY coating alloy system composition, by mass percentage, Si:0.1～14%, Y:0.1～2%, Al: surplus.Wherein, preferred Si content range is 4～10%.
When adopting arc ion plating (aip) depositing Al SiY coating, at first the vacuum chamber vacuum is evacuated to 2 * 10 in advance
-3～1 * 10
-2Pa feeds Ar gas, makes pressure in vacuum tank rise to 5 * 10
-2～3 * 10
-1Pa; Then sample is carried out pre-sputter bombardment and clean, target-substrate distance is 230～250mm, pulsed bias is-800～-1000V, dutycycle 20～40%, time 2～5min; Depositing Al SiY coating again, target-substrate distance is 230～250mm, arc voltage 20～25V, arc current 50～70A, pulsed bias be-150～-300V, dutycycle 20～40%, 300～400 ℃ of depositing temperatures, depositing time are 150～500min, and coat-thickness is 15～50 μ m.
The above-mentioned coating sample that obtains is carried out vacuum heat treatment: vacuum diffusion annealing, during vacuum diffusion annealing, temperature is 950～1050 ℃, soaking time 3～5h, 5～8 ℃/min of temperature rise rate cools to room temperature with the furnace.
Before the deposition, need sample is carried out pre-treatment, the base material sample is polished to Ra=0.4 μ m, adopt 60～220 order hollow glass ball wet abrasive blastings to handle, priority adopts metal detergent, deionized water immediately, acetone is ultrasonic respectively cleaned 5 minutes, with drying after the alcohol rinsing.
AlSiY diffusion coating of the present invention mainly forms by the reaction of the Elements Diffusion between coating and the matrix, and it mainly is β-NiAl phase mutually.Al is uniformly distributed in the coating, Si be solid-solubilized on a small quantity NiAl mutually in, other has part to exist with the precipitated phase of rich Si, the Y solid solution is among NiAl.
The present invention has the following advantages:
1. coating longer service life.Be β-NiAl mutually mainly in the AlSiY diffusion coating, contain a certain amount of Si and Y simultaneously, can delay peeling off of zone of oxidation, improve the cyclic oxidation performance and the hot corrosion resistance of coating, thereby prolong the work-ing life of coating.
2. coating has the structure and the good binding intensity of even compact.
3. the present invention can be applicable to the protection of Ni based high-temperature alloy.
4. adopt electric arc ion-plating deposition to add vacuum diffusion annealing and obtain the AlSiY diffusion coating, technology is simple, effectively control coating composition, thickness etc.The adding of Si and Y can delay peeling off of zone of oxidation, improves the cyclic oxidation performance and the hot corrosion resistance of coating.
Description of drawings
Fig. 1 is the section S EM pattern of AlSiY diffusion coating on the K465 superalloy.
Fig. 2 is the cross section element mapping of AlSiY diffusion coating on the K465 superalloy.
Fig. 3 is the XRD diffracting spectrum of the AlSiY diffusion coating on the DD265 superalloy.
Fig. 4 is the section S EM pattern of the AlSiY diffusion coating on the DD265 superalloy.
Embodiment
Below by example the present invention is described in further detail.
Embodiment 1
Base material adopts Ni based high-temperature alloy K465, and its nominal composition is (mass percent): 9.75%Co, 8.75%Cr, and 5.5%Al, 2.15%Ti, 1.85%Mo, 10.25%W, 1%Nb, Ni surplus, specimen size are Φ 15 * 1.5mm
2Adopt homemade MIP-8-800 type multi-arc ion plating equipment depositing Al SiY coating.AlSiY coating alloy system composition, by mass percentage, Si:10%, Y:1%, Al: surplus.Before the deposition sample is carried out pre-treatment, be about to the base material sample and polish to Ra=0.4 μ m, adopt 200 order hollow glass ball wet abrasive blastings to handle, priority adopts metal detergent, deionized water immediately, acetone is ultrasonic respectively cleaned 5 minutes, with dry for standby after the alcohol rinsing.When adopting arc ion plating apparatus depositing Al SiY coating, forvacuum to 7 * 10
-3Pa feeds Ar gas when bombardment and deposition, and vacuum tightness is 2 * 10
-1Pa.When sample was carried out pre-sputter bombardment and cleans, target-substrate distance was 240mm, and pulsed bias is-800V dutycycle 33%, scavenging period 5min; During deposition, target-substrate distance is 240mm, and arc voltage is 20V, and arc current 60～65A, pulsed bias be-250V, dutycycle 33%, and depositing temperature is 300 ℃, and depositing time is 400min, and the coat-thickness of acquisition is about 40 μ m.
The coating sample that obtains put into charge into the Ar gas shiled after quartz glass tube vacuumizes, 1050 ℃ of insulation 4h in retort furnace, temperature rise rate is 5 ℃/min, cools to room temperature with the furnace.
The cross section pattern of coating as shown in Figure 1 after the diffusion annealing.As shown in Figure 1, after the diffusion annealing, the about 40 μ m of AlSiY diffusion coating thickness mainly are β-NiAl phase mutually in the coating, granular α-W phase and Cr that other has some disperses to distribute
3The Si phase, the about 15 μ m of mutual diffusion district thickness.
As shown in Figure 2, by the element mapping in AlSiY diffusion coating cross section as can be seen: in the AlSiY diffusion coating, Al is uniform distribution in coating, and Si and Cr mainly are enriched in the outside, and the mutual diffusion district then mainly by rich Cr phase, rich W mutually and a small amount of β-NiAl phase composite.
In the present embodiment AlSiY diffusion coating, the about 22wt% of Al content, the about 17wt% of Cr content, Si content is about 5.6%, and W content is about 2.43%, and Y content is about 0.69%, and Ni is a surplus.The about 5.6wt% of Al content in the mutual diffusion district, the about 40wt% of Cr content, Si content is about 0.3%, and W content is about 21%, and Mo content is about 1.2%, and Ti content is about 0.3%, and Ni is a surplus.
The performance significant parameter of present embodiment AlSiY diffusion coating is as follows:
Coating is rate of body weight gain＜3 * 10 after constant temperature oxidation in 1000 ℃/300 hours
-3Mg/cm
2H, rate of body weight gain＜3 * 10 after constant temperature oxidation in 1100 ℃/200 hours
-2Mg/cm
2H.
Embodiment 2
Difference from Example 1 is:
Base material adopts Ni based high-temperature alloy DD265, and its nominal composition is (mass percent meter): 7%Co, 8%Cr, 10%W, 5%Al, 2%Ti, 1.8%Mo, C trace, Ni surplus.Specimen size is Φ 15 * 1.5mm
2Adopt homemade MIP-8-800 type multi-arc ion plating equipment depositing Al SiY coating.AlSiY coating alloy system composition, by mass percentage, Si:4%, Y:0.5%, Al: surplus.The coating deposition parameter is with embodiment 1.Depositing time is 300min, and the coat-thickness of acquisition is about 30 μ m.
The coating sample that obtains put into charge into the Ar gas shiled after quartz glass tube vacuumizes, 1000 ℃ of insulation 5h in retort furnace, temperature rise rate is 6 ℃/min, cools to room temperature with the furnace.
The XRD figure of coating spectrum as shown in Figure 3 after the diffusion annealing.As shown in Figure 3, after the diffusion annealing, the AlSiY diffusion coating is by β-NiAl, α-W phase and CoWSi phase composite.
The cross section pattern of AlSiY diffusion coating as shown in Figure 4.As shown in Figure 4, the about 30 μ m of coat-thickness, the about 15 μ m of mutual diffusion district thickness.The about 20wt% of Al content in the AlSiY diffusion coating, the about 4wt% of Cr content, Si content is about 1.8%, and W content is about 5.1%, and Y content is about 0.3%, and Ni is a surplus.The about 10wt% of Al content in the mutual diffusion district, the about 8wt% of Cr content, Si content is about 0.8%, and W content is about 24%, and Co content is about 9%, and Ti content is about 0.8%, and Ni is a surplus.
The performance significant parameter of present embodiment AlSiY diffusion coating is as follows:
Coating is rate of body weight gain＜4.5 * 10 behind 900 ℃/100 hours cyclic oxidations
-3Mg/cm
2H, rate of body weight gain＜3 * 10 after constant temperature oxidation in 1000 ℃/300 hours
-3Mg/cm
2H.
Embodiment result shows that the present invention by the method for vacuum diffusion annealing, forms the AlSiY diffusion coating again by arc ion plating (aip) depositing Al SiY coating on the superalloy base material.This AlSiY diffusion coating preparation technology has advantages such as good process repeatability and easy realization suitability for industrialized production, the coating and the body material bonding strength height of preparation, the weave construction densification, controllable component system, improved the content of storage phase content of Al in the coating top layer and Si effectively, and added rare earth element y, thus coating resistance to high temperature oxidation, hot corrosion resistance can be improved, and can prolong coating work-ing life effectively.This diffusion coating and preparation method thereof can be applicable to the protection of Ni based high-temperature alloy.
Claims (5)
1. the preparation technology of an AlSiY diffusion coating is characterized in that, comprises the steps:
(1) on superalloy matrix material, by electric arc ion-plating deposition AlSiY coating;
(2) method of employing vacuum diffusion annealing forms the AlSiY diffusion coating on superalloy matrix material.
2. according to the preparation technology of the described AlSiY diffusion coating of claim 1, it is characterized in that, when adopting arc ion plating (aip) depositing Al SiY coating, at first the vacuum chamber vacuum is evacuated to 2 * 10 in advance
-3～1 * 10
-2Pa feeds Ar gas, makes pressure in vacuum tank rise to 5 * 10
-2～3 * 10
-1Pa; Then sample is carried out pre-sputter bombardment and clean, target-substrate distance is 230～250mm, pulsed bias is-800～-1000V, dutycycle 20～40%, time 2～5min; Depositing Al SiY coating again, target-substrate distance is 230～250mm, arc voltage 20～25V, arc current 50～70A, pulsed bias be-150～-300V, dutycycle 20～40%, 300～400 ℃ of depositing temperatures, depositing time are 150～500min, and coat-thickness is 15～50 μ m.
3. according to the preparation technology of the described AlSiY diffusion coating of claim 1, it is characterized in that: during vacuum diffusion annealing, temperature is 950～1050 ℃, and soaking time 3～5h cools to room temperature with the furnace.
4. according to the preparation technology of the described AlSiY diffusion coating of claim 1, it is characterized in that: by mass percentage, in the AlSiY coating of electric arc ion-plating deposition, Si:0.1～14%, Y:0.1～2%, Al: surplus.
5. according to the preparation technology of the described AlSiY diffusion coating of claim 1, it is characterized in that, need before the deposition sample is carried out pre-treatment, the base material sample is polished to Ra=0.4 μ m, adopt 60～220 order hollow glass ball wet abrasive blastings to handle, priority adopts metal detergent, deionized water immediately, acetone is ultrasonic respectively cleaned 5 minutes, with drying after the alcohol rinsing.
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|---|---|---|---|
| CN200810229663A CN101748375A (en) | 2008-12-12 | 2008-12-12 | Preparation process of AlSiY diffusion coating |
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|---|---|---|---|
| CN200810229663A CN101748375A (en) | 2008-12-12 | 2008-12-12 | Preparation process of AlSiY diffusion coating |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105603424A (en) * | 2014-11-25 | 2016-05-25 | 中国科学院金属研究所 | Si-modified beta-(Ni,Pt)Al coating and preparation method thereof |
| CN112663001A (en) * | 2020-12-14 | 2021-04-16 | 中国兵器工业第五九研究所 | Titanium alloy blade protective coating and preparation method thereof |
| CN113106394A (en) * | 2021-04-08 | 2021-07-13 | 北航成都航空动力创新研究院有限公司 | Composite coating resistant to corrosion of high-temperature liquid lead-bismuth alloy and preparation method thereof |
-
2008
- 2008-12-12 CN CN200810229663A patent/CN101748375A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105603424A (en) * | 2014-11-25 | 2016-05-25 | 中国科学院金属研究所 | Si-modified beta-(Ni,Pt)Al coating and preparation method thereof |
| CN105603424B (en) * | 2014-11-25 | 2018-01-16 | 中国科学院金属研究所 | β (Ni, Pt) Al coatings that a kind of Si is modified and preparation method thereof |
| CN112663001A (en) * | 2020-12-14 | 2021-04-16 | 中国兵器工业第五九研究所 | Titanium alloy blade protective coating and preparation method thereof |
| CN112663001B (en) * | 2020-12-14 | 2022-07-01 | 中国兵器工业第五九研究所 | Titanium alloy blade protective coating and preparation method thereof |
| CN113106394A (en) * | 2021-04-08 | 2021-07-13 | 北航成都航空动力创新研究院有限公司 | Composite coating resistant to corrosion of high-temperature liquid lead-bismuth alloy and preparation method thereof |
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Open date: 20100623 |