CN101121308A - Al2O3/Al-Si-Cr composite coatings and preparation method thereof - Google Patents
Al2O3/Al-Si-Cr composite coatings and preparation method thereof Download PDFInfo
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- CN101121308A CN101121308A CNA200710122224XA CN200710122224A CN101121308A CN 101121308 A CN101121308 A CN 101121308A CN A200710122224X A CNA200710122224X A CN A200710122224XA CN 200710122224 A CN200710122224 A CN 200710122224A CN 101121308 A CN101121308 A CN 101121308A
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- 238000000576 coating method Methods 0.000 title claims abstract description 123
- 229910008458 Si—Cr Inorganic materials 0.000 title claims abstract description 73
- 239000002131 composite material Substances 0.000 title claims abstract description 32
- 238000002360 preparation method Methods 0.000 title claims abstract description 26
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 title 1
- 229910052593 corundum Inorganic materials 0.000 title 1
- 229910001845 yogo sapphire Inorganic materials 0.000 title 1
- 239000011248 coating agent Substances 0.000 claims abstract description 117
- 238000007750 plasma spraying Methods 0.000 claims abstract description 22
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 19
- 238000000034 method Methods 0.000 claims abstract description 14
- 229910004298 SiO 2 Inorganic materials 0.000 claims abstract description 12
- 239000000758 substrate Substances 0.000 claims abstract description 12
- 229910018072 Al 2 O 3 Inorganic materials 0.000 claims abstract 25
- 239000000463 material Substances 0.000 claims description 29
- 239000011812 mixed powder Substances 0.000 claims description 29
- 239000000843 powder Substances 0.000 claims description 28
- 239000011230 binding agent Substances 0.000 claims description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 13
- 229920000084 Gum arabic Polymers 0.000 claims description 12
- 241000978776 Senegalia senegal Species 0.000 claims description 12
- 235000010489 acacia gum Nutrition 0.000 claims description 12
- 239000000205 acacia gum Substances 0.000 claims description 12
- 239000008367 deionised water Substances 0.000 claims description 12
- 229910021641 deionized water Inorganic materials 0.000 claims description 12
- 238000005507 spraying Methods 0.000 claims description 9
- 238000001035 drying Methods 0.000 claims description 8
- 238000000889 atomisation Methods 0.000 claims description 7
- 239000002245 particle Substances 0.000 claims description 7
- 238000005488 sandblasting Methods 0.000 claims description 7
- 238000000227 grinding Methods 0.000 claims description 4
- 239000011863 silicon-based powder Substances 0.000 claims description 4
- 230000003746 surface roughness Effects 0.000 claims description 4
- 230000004584 weight gain Effects 0.000 claims description 2
- 235000019786 weight gain Nutrition 0.000 claims description 2
- 238000005422 blasting Methods 0.000 claims 2
- 238000002156 mixing Methods 0.000 claims 2
- 238000009690 centrifugal atomisation Methods 0.000 claims 1
- 238000003756 stirring Methods 0.000 claims 1
- 230000003064 anti-oxidating effect Effects 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 45
- 239000011159 matrix material Substances 0.000 description 42
- 238000007254 oxidation reaction Methods 0.000 description 32
- 230000003647 oxidation Effects 0.000 description 30
- 238000009792 diffusion process Methods 0.000 description 10
- 239000000203 mixture Substances 0.000 description 9
- 238000004458 analytical method Methods 0.000 description 8
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 7
- 229910052760 oxygen Inorganic materials 0.000 description 7
- 239000001301 oxygen Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 150000001875 compounds Chemical class 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000005469 granulation Methods 0.000 description 3
- 230000003179 granulation Effects 0.000 description 3
- 238000005498 polishing Methods 0.000 description 3
- 238000002203 pretreatment Methods 0.000 description 3
- 238000010008 shearing Methods 0.000 description 3
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 3
- 229910010271 silicon carbide Inorganic materials 0.000 description 3
- 238000005303 weighing Methods 0.000 description 3
- 239000000956 alloy Substances 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 230000003026 anti-oxygenic effect Effects 0.000 description 2
- 239000011247 coating layer Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- 235000006708 antioxidants Nutrition 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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Abstract
本发明公开了一种Al2O3/Al－Si－Cr复合涂层，以及采用低压30～40×103pa等离子喷涂工艺在Nb－24Ti－16Si－6Al－6Cr－2Hf基体上制备Al2O3/Al－Si－Cr复合涂层的方法。所述Al2O3/Al－Si－Cr复合涂层由Al2O3涂层和Al－Si－Cr混合层组成，Al2O3涂层在Al－Si－Cr混合层与Nb－24Ti－16Si－6Al－6Cr－2Hf基体之间，Al2O3涂层厚度为50～200μm，Al－Si－Cr混合层厚度为50～200μm；所述Al2O3/Al－Si－Cr复合涂层中Al－Si－Cr混合层包含Cr(Si，Al)2、Al、Si三相，在高温1000～1250℃氧化100h以后能够形成连续、致密的Al2O3和SiO2混合氧化物层；所述Al2O3涂层能够有效地阻止Al－Si－Cr混合涂层与基体之间的互扩散，从而提高了涂层的持续抗氧化寿命。
The invention discloses an Al 2 O 3 /Al-Si-Cr composite coating, and the preparation of Al 2 O 3 on a Nb-24Ti-16Si-6Al-6Cr-2Hf substrate by adopting a low-pressure 30-40×10 3 pa plasma spraying process O 3 /Al-Si-Cr composite coating method. The Al 2 O 3 /Al-Si-Cr composite coating is composed of an Al 2 O 3 coating and an Al-Si-Cr mixed layer, and the Al 2 O 3 coating is composed of an Al-Si-Cr mixed layer and a Nb-24Ti Between -16Si-6Al-6Cr-2Hf substrates, the thickness of the Al 2 O 3 coating is 50-200 μm, and the thickness of the Al-Si-Cr mixed layer is 50-200 μm; the Al 2 O 3 /Al-Si-Cr composite The Al-Si-Cr mixed layer in the coating contains three phases of Cr(Si, Al) 2 , Al and Si, and can form continuous and dense mixed oxides of Al 2 O 3 and SiO 2 after being oxidized at a high temperature of 1000-1250°C for 100 hours layer; the Al 2 O 3 coating can effectively prevent the interdiffusion between the Al-Si-Cr mixed coating and the substrate, thereby improving the continuous anti-oxidation life of the coating.
Description
Technical field
The present invention relates to a kind of preparation method of coating, more particularly, refer to a kind of employing low pressure (30～40 * 10
3Pa) plasma spraying method is prepared the Al of (1000～1250 ℃) antioxygenic property that has high temperature at the Nb-24Ti-16Si-6Al-6Cr-2Hf matrix
2O
3/ Al-Si-Cr composite coating.
Background technology
Niobium-base alloy has high melt point (＞1700 ℃), lower density (6.6～7.2g/cm
3), good room temperature fracture toughness (＞20Mpam
1/2), good high-temperature intensity and casting character, thereby be expected to become the blade material of under 1200～1400 ℃ even higher temperature, working.But Nb
Ss/ Nb
5Si
3The two-phase alloys antioxygenic property is poor, has serious oxidation weight gain phenomenon during high-temperature oxydation.The oxide that forms is as TiNb
2O
7, AlNb
11O
29And CrNbO
4Etc. loose porous, and growth rapidly, can't stop the continuation diffusion of oxygen to matrix, thereby not reach the high-temperature oxidation resistant effect.
Al, Cr, three kinds of elements of Si have superior high-temperature oxidation resistant effect, their oxide Al
2O
3, SiO
2And Cr
2O
3Can stop the diffusion of oxygen, stop further carrying out of oxidation.Al, Cr, Si form chemical compound lot through chemical combination, and these compounds all have good high-temperature oxidation resistance, but part of compounds is subjected to the influence of its fusing point, have limited its high temperature and have used.Cr (Al, Si)
2Good in oxidation resistance, fusing point height (＞1250 ℃).Thereby has a very high high temperature using value.
Al
2O
3Has very high fusing point, fine and close Al
2O
3Layer not only can stop the diffusion of oxygen element, and can stop Nb, Ti, Al, Cr, Si etc. than the diffusion of the element of thick atom radius, is the selection that well hinders diffusion layer material.
Along with the development of coating technology, more high-performance, the coating system of labyrinth is developed gradually more.The development multi-layer composite coatings is one of important directions of present coating development.In the high-temperature oxidation resistant coating system, ORC can lose efficacy gradually along with the increase of oxidization time.Causing its failure reasons mainly is the consumption of active element.The consumption of active element comprises two processes: the oxygen that (1) active element spreads in environment is combined and is formed oxide; (2) active element spreads to the matrix direction in hot environment.In order to improve the service life of coating, it is very necessary increasing one deck resistance diffusion layer between anti oxidation layer and matrix.
Summary of the invention
One of purpose of the present invention provides a kind of Al
2O
3/ Al-Si-Cr composite coating, this composite coating is by Al
2O
3Coating and Al-Si-Cr mixed layer form, Al
2O
3Coating between Al-Si-Cr mixed layer and Nb-24Ti-16Si-6Al-6Cr-2Hf matrix, Al
2O
3Coating layer thickness is 50～200 μ m, and Al-Si-Cr mixed layer thickness is 50～200 μ m.The Al-Si-Cr mixed layer is by Cr (Si, Al)
2, Al, Si three phase compositions, it is formed with Al with interior on Al-Si-Cr mixed layer surface at 1000～1250 ℃ of oxidation 100h of high temperature
2O
3And SiO
2Mixed oxide layer, can successfully stop oxygen to the diffusion of matrix.The Al that the present invention makes
2O
3The coating section of (during 1000～1250 ℃ of oxidation 100h of oxidizing condition) shows that coating forms by three layers after the oxidation after the oxidation of/Al-Si-Cr composite coating process sem analysis: skin is the oxide skin(coating) of Al-Si-Cr mixed coating; The intermediate layer is the Al-Si-Cr mixed coating; Internal layer is Al
2O
3Al
2O
3Layer has played the resistance diffusion in oxidizing process, successfully stoped the counterdiffusion effect between matrix and the coating.
Another object of the present invention is to propose a kind of employing low pressure 30～40 * 10
3The pa plasma spraying prepares Al
2O
3The method of/Al-Si-Cr composite coating is at first prepared Al at the Nb-24Ti-16Si-6Al-6Cr-2Hf matrix
2O
3Coating is then at Al
2O
3Prepare the Al-Si-Cr mixed coating on the coating; Have Cr (Al, Si) in the Al-Si-Cr mixed coating
2, the material such as Si and Al, when 1000～1250 ℃ of oxidation 100h of high temperature, can form continuous, fine and close Al
2O
3And SiO
2Mixed oxide layer, thus the further oxidized of coatings and substrate stoped, improved the high temperature oxidation resistance of Nb-24Ti-16Si-6Al-6Cr-2Hf matrix; Simultaneously, described Al when 1000～1250 ℃ of oxidation 100h of high temperature
2O
3Coating can successfully stop the counterdiffusion between Al-Si-Cr mixed coating and the matrix, thereby has improved the lasting anti-oxidant life-span of coating.
Al of the present invention
2O
3/ Al-Si-Cr composite coating is by adopting the preparation of low-voltage plasma spraying technology on the Nb-24Ti-16Si-6Al-6Cr-2Hf matrix, and preparation has Al between matrix and Al-Si-Cr mixed coating
2O
3Coating; Al
2O
3/ Al-Si-Cr composite coating can form the Al of continuous densification when 1000～1250 ℃ of oxidations of high temperature
2O
3And SiO
2Mixed oxide layer, thus the further oxidized of coatings and substrate stoped, improved the high temperature oxidation resistance of Nb-24Ti-16Si-6Al-6Cr-2Hf matrix, preparing cated matrix surface unit are weightening finish is 4.2～9.8mg/cm
2
Description of drawings
Fig. 1 makes Al at matrix
2O
3The section structure schematic diagram of/Al-Si-Cr composite coating.
Fig. 2 is the Al after the oxidation
2O
3The section structure schematic diagram of/Al-Si-Cr composite coating.
The specific embodiment
The present invention is described in further detail below in conjunction with drawings and Examples.
The present invention is a kind of high temperature resistance (1000～1250 ℃) oxidation Al
2O
3/ Al-Si-Cr composite coating, described Al
2O
3/ Al-Si-Cr composite coating is by Al
2O
3Coating and Al-Si-Cr mixed layer form, Al
2O
3Coating is between Al-Si-Cr mixed layer and Nb-24Ti-16Si-6Al-6Cr-2Hf matrix.Described Al
2O
3Coating layer thickness is 50～200 μ m.Described Al-Si-Cr mixed layer thickness is 50～200 μ m, and this coating is by Cr (Si, Al)
2, Al, Si three phase compositions, Al-Si-Cr mixed layer surface is formed with Al when 1000～1250 ℃ of oxidation 100h of high temperature
2O
3And SiO
2Mixed oxide layer.
The present invention is a kind of employing low pressure 30～40 * 10
3The pa plasma spraying prepares Al
2O
3The method of/Al-Si-Cr composite coating, this coating production has the following step:
The first step: the pre-treatment of matrix
With Nb-24Ti-16Si-6Al-6Cr-2Hf matrix adopting 150#, 360#, the polishing of 500# silicon carbide paper, and it is back stand-by to adopt sand-blasting machine to carry out the surface sand-blasting processing, matrix surface roughness RZ=60 after the sandblast～80 μ m;
Second step: preparation Al-Si-Cr coating material
(A) take by weighing the Al powder of 30～35wt%, the Cr powder of 30～33wt%, the Si powder of 32～40wt%, and the content sum of above-mentioned each composition is 100%, mixes after grind that to make granularity behind 30～150min be 250～350 purposes, first mixed-powders;
(B) will mix with binding agent through first mixed-powder that (A) step makes after to make granularity after grinding 250～400min be 250～350 purposes, second mixed-powders;
The consumption of first mixed-powder and binding agent is a binding agent of putting into 1000～1500ml in first mixed-powder of 1000g;
Described binding agent is stirred in 80～100 ℃ by gum arabic and deionized water and makes, and the consumption of gum arabic and deionized water is to add 0.5～5g gum arabic in every 100ml deionized water;
(C) will make granularity through second mixed-powder that (B) step makes after the atomization drying granulation is 200～250 purpose coating materials;
Atomization drying adopts centrifugal atomizing method, it (is coating material that the shearing force that second mixed-powder injects atomizer and is atomized device immediately through constant flow pump is dispersed into a lot of fine drop, its particle diameter is 40～80 μ m), wherein the atomizer rotating speed is 8000～20000r/min, the atomizer inlet temperature is 220～230 ℃, and the atomizer outlet temperature is 130～150 ℃;
The 3rd step: preparation Al
2O
3Coating material
Choose the Al that granularity is 200～250 purpose purity 99.9%
2O
3Spheroidal powder material;
The 4th step: low-voltage plasma spraying system coating
(A) matrix after the first step is processed is installed on the anchor clamps of low-voltage plasma spraying equipment, and will be through the Al of the 3rd step preparation
2O
3Coating material is put into feed appliance, regulates spraying parameter Al processed
2O
3Coating;
Plasma spraying parameter: jar internal pressure 30～40 * 10
3Pa, the primary air amount is 60～100L/h, and inferior throughput is 25～30L/h, and arc current is 560～600A, and arc voltage is 50～60V, the powder sending quantity of powder feeder is 24～25g/min;
(B) second step preparation Al-Si-Cr coating material is put into feed appliance, regulate spraying parameter system Al-Si-Cr coating;
Plasma spraying parameter: jar internal pressure 30～40 * 10
3Pa, the primary air amount is 60～100L/h, and inferior throughput is 25～30L/h, and electric current is 560～600A, and voltage is 50～60V, the powder sending quantity of powder feeder is 20～22g/min.
Al with the said method preparation
2O
3/ Al-Si-Cr composite coating shows that through XRD, sem analysis the Al-Si-Cr mixed coating is by Cr (Si, Al)
2, Al, Si three phase compositions, this coating is formed with Al with interior on Al-Si-Cr mixed layer surface at 1000～1250 ℃ of oxidation 100h of high temperature
2O
3And SiO
2Mixed oxide layer.
Embodiment 1:
The first step: the pre-treatment of matrix
With Nb-24Ti-16Si-6Al-6Cr-2Hf matrix cut growth 13mm, wide 8mm, the rectangle sample of high 3mm, and after adopting 150#, 360#, the polishing of 500# silicon carbide paper, it is stand-by that the employing sand-blasting machine carries out surface sand-blasting processing back, matrix surface roughness RZ=60 after the sandblast～80 μ m;
Second step: preparation coating material
(A) the Si powder that takes by weighing Cr powder, the 34.6wt% of Al powder, the 32.1wt% of 33.3wt% mixes after grind that to make granularity behind the 100min be 250～350 purposes, first mixed-powders;
(B) will mix with binding agent through first mixed-powder that (A) step makes after to make granularity after grinding 300min be 250～350 purposes, second mixed-powders;
The consumption of first mixed-powder and binding agent is a binding agent of putting into 1000ml in first mixed-powder of 1000g;
Described binding agent is stirred in 100 ℃ by gum arabic and deionized water and makes, and the consumption of gum arabic and deionized water is to add the 1g gum arabic in every 100ml deionized water;
(C) will make granularity through second mixed-powder that (B) step makes after the atomization drying granulation is 200～250 purpose coating materials;
Atomization drying adopts centrifugal atomizing method, second mixed-powder is dispersed into a lot of fine drop (particle diameter is 60～80 μ m) through the shearing force that constant flow pump injection atomizer also is atomized device immediately, wherein the atomizer rotating speed is 15000r/min, 225 ℃ of atomizer inlet temperatures, atomizer outlet temperature are 140 ℃.
The 3rd step: preparation Al
2O
3Coating material
Choose the Al that granularity is 200～250 purpose purity 99.9%
2O
3Spheroidal powder material;
The 4th step: low-voltage plasma spraying system coating
(A) matrix after the first step is processed is installed on the anchor clamps of low-voltage plasma spraying equipment, and will be through the Al of the 3rd step preparation
2O
3Coating material is put into feed appliance, regulates spraying parameter Al processed
2O
3Coating;
Plasma spraying parameter: jar internal pressure 30 * 10
3Pa, the primary air amount is 60L/h, and inferior throughput is 25L/h, and electric current is 580A, and voltage is 55V, the powder sending quantity of powder feeder is 24g/min;
(B) second step preparation Al-Si-Cr coating material is put into feed appliance, regulate spraying parameter system Al-Si-Cr coating;
Plasma spraying parameter: jar internal pressure 30 * 10
3Pa, the primary air amount is 60L/h, and inferior throughput is 25L/h, and electric current is 580A, and voltage is 55V, the powder sending quantity of powder feeder is 21g/min.
With the above-mentioned Al that makes
2O
3/ Al-Si-Cr composite coating shows through sem analysis, the Al of preparation
2O
3/ Al-Si-Cr composite coating mainly is made up of two-layer: outer is the Al-Si-Cr mixed layer, and this mixed layer is by Cr (Si, Al)
2, Al, Si three phase compositions; Internal layer is the Al between coating and the matrix
2O
3Coating, its section structure signal as shown in Figure 1.
In air atmosphere, during through 1250 ℃ of isothermal oxidation 100h, the weightening finish of matrix surface unit are is 213mg/cm with the Nb-24Ti-16Si-6Al-6Cr-2Hf matrix
2
To make Al
2O
3The matrix of/Al-Si-Cr composite coating is in air atmosphere, and during through 1250 ℃ of isothermal oxidation 100h, the weightening finish of coating surface unit are is 9.8mg/cm
2Find (section structure is illustrated as shown in Figure 2) by the sem analysis to the oxidised samples section, coating mainly forms by three layers after the oxidation: skin is Al
2O
3And SiO
2Mixed oxide layer; The intermediate layer is the Al-Si-Cr mixed layer; Internal layer is Al
2O
3Coating (100 μ m are arranged approximately).Coating surface after the oxidation shows that through XRD, sem analysis coating surface has formed continuous, fine and close Al
2O
3And SiO
2Mixed oxide layer, thus the diffusion of oxygen to matrix successfully stoped.
By not comparing with preparing coating of material preparing cated matrix, its unit are weightening finish has reduced about 200mg/m
2, prove that the cated matrix of preparation has good high-temperature oxidation resistant effect.
Embodiment 2:
The first step: the pre-treatment of matrix
With Nb-24Ti-16Si-6Al-6Cr-2Hf matrix cut growth 13mm, wide 8mm, the rectangle sample of high 3mm, and after adopting 150#, 360#, the polishing of 500# silicon carbide paper, it is stand-by that the employing sand-blasting machine carries out surface sand-blasting processing back, matrix surface roughness RZ=60 after the sandblast～80 μ m;
Second step: preparation coating material
(A) the Si powder that takes by weighing Cr powder, the 40wt% of Al powder, the 30wt% of 30wt% mixes after grind that to make granularity behind the 150min be 250～350 purposes, first mixed-powders;
(B) will mix with binding agent through first mixed-powder that (A) step makes after to make granularity after grinding 400min be 250～350 purposes, second mixed-powders;
The consumption of first mixed-powder and binding agent is a binding agent of putting into 1500ml in first mixed-powder of 1000g;
Described binding agent is stirred in 80 ℃ by gum arabic and deionized water and makes, and the consumption of gum arabic and deionized water is to add the 5g gum arabic in every 100ml deionized water;
(C) will make granularity through second mixed-powder that (B) step makes after the atomization drying granulation is 200～250 purpose coating materials;
Atomization drying adopts centrifugal atomizing method, second mixed-powder is dispersed into a lot of fine drop (particle diameter is 40～70 μ m) through the shearing force that constant flow pump injection atomizer also is atomized device immediately, wherein the atomizer rotating speed is 20000r/min, the atomizer inlet temperature is 230 ℃, and the atomizer outlet temperature is 150 ℃.
The 3rd step: preparation Al
2O
3Coating material
Choose the Al that granularity is 200～250 purpose purity 99.9%
2O
3Spheroidal powder material;
The 4th step: low-voltage plasma spraying system coating
(A) matrix after the first step is processed is installed on the anchor clamps of low-voltage plasma spraying equipment, and will be through the Al of the 3rd step preparation
2O
3Coating material put into feed appliance, regulate spraying parameter Al processed
2O
3Coating;
Plasma spraying parameter: jar internal pressure 40 * 10
3Pa, the primary air amount is 100L/h, and inferior throughput is 30L/h, and electric current is 600A, and voltage is 60V, the powder sending quantity of powder feeder is 25g/min;
(B) second step preparation Al-Si-Cr coating material is put into feed appliance, regulate spraying parameter system Al-Si-Cr mixed coating;
Plasma spraying parameter: jar internal pressure 40 * 10
3Pa, the primary air amount is 100L/h, and inferior throughput is 30L/h, and electric current is 600A, and voltage is 60V, the powder sending quantity of powder feeder is 22g/min.
With the above-mentioned Al that makes
2O
3/ Al-Si-Cr composite coating shows that through sem analysis the coating of preparation mainly is made up of two-layer: outer is the Al-Si-Cr mixed layer, Cr (Si, Al) in this mixed layer
2, Al, Si three phase compositions; Internal layer is the Al between coating and the matrix
2O
3Coating.
In air atmosphere, during through 1000 ℃ of isothermal oxidation 100h, the weightening finish of matrix surface unit are is 44.6mg/cm with the Nb-24Ti-16Si-6Al-6Cr-2Hf matrix
2
In air atmosphere, during through 1000 ℃ of isothermal oxidation 100h, the weightening finish of coating surface unit are is 4.2mg/cm with the matrix that makes the Al-Si-Cr coating
2Find that by the sem analysis to the oxidised samples section coating mainly forms by three layers after the oxidation: skin is Al
2O
3And SiO
2Mixed oxide layer; The intermediate layer is the Al-Si-Cr mixed layer; Internal layer is Al
2O
3Layer (200 μ m are arranged approximately).Coating surface after the oxidation shows that through XRD, sem analysis coating surface has formed continuous, fine and close Al
2O
3And SiO
2Mixed oxide layer, thus the diffusion of oxygen to matrix successfully stoped.
By not comparing with preparing coating of material preparing cated matrix, its unit are weightening finish has reduced about 40mg/cm
2, prove that the cated matrix of preparation has good high-temperature oxidation resistant effect.
Claims (5)
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|---|---|---|---|
| CNB200710122224XA CN100522607C (en) | 2007-09-24 | 2007-09-24 | Al2O3/Al-Si-Cr composite coatings and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200710122224XA CN100522607C (en) | 2007-09-24 | 2007-09-24 | Al2O3/Al-Si-Cr composite coatings and preparation method thereof |
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|---|---|
| CN101121308A true CN101121308A (en) | 2008-02-13 |
| CN100522607C CN100522607C (en) | 2009-08-05 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101824590A (en) * | 2010-04-29 | 2010-09-08 | 南昌航空大学 | Method for preparing Nb/NbCr2-based high-temperature alloy surface anti-oxidation composite coating |
| CN101580938B (en) * | 2009-06-19 | 2012-10-03 | 吉林大学 | Method for preparing metallic matrix composite coating reinforced by alumina ceramics particles |
| CN104611671B (en) * | 2015-01-08 | 2017-08-08 | 广西大学 | A kind of intermediate layer for stopping elements diffusion and preparation method thereof |
| CN107964650A (en) * | 2013-07-20 | 2018-04-27 | 应用材料公司 | Chamber part, plasma resistant lid or the method for nozzle and article of manufacture |
| US12195839B2 (en) | 2013-12-06 | 2025-01-14 | Applied Materials, Inc. | Ion beam sputtering with ion assisted deposition for coatings on chamber components |
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2007
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101580938B (en) * | 2009-06-19 | 2012-10-03 | 吉林大学 | Method for preparing metallic matrix composite coating reinforced by alumina ceramics particles |
| CN101824590A (en) * | 2010-04-29 | 2010-09-08 | 南昌航空大学 | Method for preparing Nb/NbCr2-based high-temperature alloy surface anti-oxidation composite coating |
| CN101824590B (en) * | 2010-04-29 | 2011-07-06 | 南昌航空大学 | Method for preparing Nb/NbCr2-based high-temperature alloy surface anti-oxidation composite coating |
| CN107964650A (en) * | 2013-07-20 | 2018-04-27 | 应用材料公司 | Chamber part, plasma resistant lid or the method for nozzle and article of manufacture |
| US12195839B2 (en) | 2013-12-06 | 2025-01-14 | Applied Materials, Inc. | Ion beam sputtering with ion assisted deposition for coatings on chamber components |
| CN104611671B (en) * | 2015-01-08 | 2017-08-08 | 广西大学 | A kind of intermediate layer for stopping elements diffusion and preparation method thereof |
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| Publication number | Publication date |
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| CN100522607C (en) | 2009-08-05 |
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