CN1066690A - High-temperature corrosion resistant coating and preparation process thereof - Google Patents
High-temperature corrosion resistant coating and preparation process thereof Download PDFInfo
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- CN1066690A CN1066690A CN 91106106 CN91106106A CN1066690A CN 1066690 A CN1066690 A CN 1066690A CN 91106106 CN91106106 CN 91106106 CN 91106106 A CN91106106 A CN 91106106A CN 1066690 A CN1066690 A CN 1066690A
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- 238000000576 coating method Methods 0.000 title claims abstract description 94
- 239000011248 coating agent Substances 0.000 title claims abstract description 93
- 238000002360 preparation method Methods 0.000 title claims abstract description 31
- 238000005260 corrosion Methods 0.000 title claims abstract description 14
- 230000007797 corrosion Effects 0.000 title claims abstract description 14
- 229910000951 Aluminide Inorganic materials 0.000 claims abstract description 29
- 229910001404 rare earth metal oxide Inorganic materials 0.000 claims abstract description 26
- 239000011651 chromium Substances 0.000 claims abstract description 21
- 238000000034 method Methods 0.000 claims abstract description 18
- 239000002245 particle Substances 0.000 claims abstract description 14
- 238000007747 plating Methods 0.000 claims abstract description 10
- 238000005269 aluminizing Methods 0.000 claims abstract description 8
- 238000009792 diffusion process Methods 0.000 claims abstract description 8
- 229910000943 NiAl Inorganic materials 0.000 claims abstract 2
- 238000005516 engineering process Methods 0.000 claims description 28
- 239000000203 mixture Substances 0.000 claims description 19
- 239000000843 powder Substances 0.000 claims description 18
- 150000001875 compounds Chemical class 0.000 claims description 17
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 8
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 8
- 239000003961 penetration enhancing agent Substances 0.000 claims description 8
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 claims description 6
- 239000013543 active substance Substances 0.000 claims description 6
- QRRWWGNBSQSBAM-UHFFFAOYSA-N alumane;chromium Chemical compound [AlH3].[Cr] QRRWWGNBSQSBAM-UHFFFAOYSA-N 0.000 claims description 5
- 238000006356 dehydrogenation reaction Methods 0.000 claims description 5
- 229910015372 FeAl Inorganic materials 0.000 claims description 4
- 239000011780 sodium chloride Substances 0.000 claims description 4
- 150000008065 acid anhydrides Chemical class 0.000 claims 1
- 239000003795 chemical substances by application Substances 0.000 claims 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 abstract description 7
- 229910052804 chromium Inorganic materials 0.000 abstract description 7
- 239000002131 composite material Substances 0.000 abstract description 4
- 241000501667 Etroplus Species 0.000 abstract 1
- 238000007254 oxidation reaction Methods 0.000 description 6
- 239000000243 solution Substances 0.000 description 6
- 230000003647 oxidation Effects 0.000 description 5
- 229910052761 rare earth metal Inorganic materials 0.000 description 5
- 238000000151 deposition Methods 0.000 description 4
- 230000008021 deposition Effects 0.000 description 4
- 230000003078 antioxidant effect Effects 0.000 description 3
- 230000004087 circulation Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 150000002910 rare earth metals Chemical class 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 239000012267 brine Substances 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 208000020442 loss of weight Diseases 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 229910052684 Cerium Inorganic materials 0.000 description 1
- 229910052776 Thorium Inorganic materials 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000003064 anti-oxidating effect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000004070 electrodeposition Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 229910052735 hafnium Inorganic materials 0.000 description 1
- 238000001513 hot isostatic pressing Methods 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000005468 ion implantation Methods 0.000 description 1
- 238000010884 ion-beam technique Methods 0.000 description 1
- 229910052746 lanthanum Inorganic materials 0.000 description 1
- 238000001755 magnetron sputter deposition Methods 0.000 description 1
- 238000005240 physical vapour deposition Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000004901 spalling Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
- 229910052727 yttrium Inorganic materials 0.000 description 1
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Abstract
A high-temperature corrosion resistant coating is mainly characterized in that the coating is a NiAl-rare earth oxide type composite aluminide coating which mainly comprises beta-NiAl phase and contains dispersed rare earth oxide particles, and a composite chromium-containing chromide coating containing dispersed rare earth oxide; the preparation process of the coating mainly comprises Ni-rare earth oxide codeposition → chromium plating → vacuum thermal diffusion treatment → aluminizing → surface post-treatment.
The coating obtained by the process provided by the invention has obviously improved high-temperature corrosion resistance compared with the prior art.
Description
The present invention relates to the metallic surface chemical treatment method, a kind of composite coating and preparation technology thereof of containing disperse rare earth oxide particle who is used for resistance to high temperature corrosion promptly is provided.
The development of high-temperature protection coating and use start from middle fifties in this century, are initially simple diffusion coating aluminum coating, progressively develop on this basis later on and have played binary, ternary and multiple permeation aluminide coating.People also constantly deepen the understanding of the effect of coating component in the development coat preparing technology, and the particularly useful effect of rare earth element is as elements such as Hf, Y, Ce, Th, La.The coating preparation means that contain rare earth at present have: EB, PVD prepare the MCrALY coating, magnetron sputtering prepares the MCrALY coating, and PPS or LPPS prepare the MCrALY coating, ion implantation rare earth element, the AL-RE co-permeating, Nl or CO and MCrALY powdered alloy codeposition prepare MCrALY infiltration layer etc.Adopt electronics or ion beam apparatus to produce owing to contain the coating of rare earth, it is costly as to make it be difficult to be promoted on a large scale more.Though abroad the someone adopts Nl, Co and MCrALY powdered alloy coelectrodeposition, then hot isostatic pressing, heat treated means prepare the MCrALY coating again, the preparation technology of its MCrALY fine powder is very complicated, cost is also higher, therefore also fails widespread usage.
The purpose of this invention is to provide a kind of be used for resistance to high temperature corrosion contain disperse rare earth oxide (hereinafter to be referred as RxOy), the composite coating of particle and with low cost, the simple preparation technology of technology.
The objective of the invention is to realize by following proposal: the preparation that 1, contains the compound aluminide coating of disperse rare earth oxide realizes its deposition of Nl and RxOy by the method for galvanic deposit on the workpiece substrate of being made by high-temperature material, thereby acquisition contains its deposition layer of Nl-RxOy of the rare earth oxide particle of small and dispersed carries out the thermodiffusion aluminising, finally prepares mutually and the compound aluminide coating of NlAL-RxOy type that contain disperse rare-earth oxidation material based on β-NlAL.
Above-mentioned preparation technology of coating flow process is seen Fig. 1
2, contain the preparation of the compound aluminium chromium dosed thing coating of disperse rare earth oxide
(1) make tiny rare earth oxide particle be suspended in the solution equably by suitable stirring, realize the codeposition of Nl and RxOy with the method for galvanic deposit, thereby obtain to contain the Nl-RxOy coelectrodeposition of small and dispersed rare earth oxide particle, carry out chromium plating then, on the NlRxOy layer, prepare one deck book chromium layer, on the chromium layer, be superimposed with the Nl-RxOy layer at last again, thereby form Nl-RxOy|Cr|Nl-RxOy|Cr ... | three layers or the coating of multilayered structure of Nl-RxOy|.
(2) above-mentioned coating is carried out High temperature diffusion under vacuum condition and handle, make the distribution of Cr be tending towards homogenizing, and obtain to contain the Nl-RxOy layer of Cr.
(3) coating that homogenizing is handled is carried out the thermodiffusion aluminising, finally prepares the compound aluminide coating that contains disperse rare earth oxide and the certain chromium content of tool, i.e. NlAL(Cr)-the RxOy layer.
Preparation technology's flow process of above-mentioned coating is seen Fig. 2:
Principal character of the present invention provided a kind of based on β-NlAl the mutually and compound aluminide coating of NlAL-rare earth oxide that contain disperse rare earth oxide particle, its coating is the best with following four kinds of temperature resistance corrosive natures:
1, NlAL-CeO
2Compound aluminide coating
2, NlAL-Y
2O
3Compound aluminide coating
3, NlAL-La
2O
3Compound aluminide coating
4, NlAL-Gd
2O
3Compound aluminide coating
The preparation technology of above-mentioned coating is made up of following operation:
Sample surfaces cleans; The processing of powder high-temperature stable
Nl-rare earth oxide coelectrodeposition
Aluminising
Surface aftertreatment (cleaning)
NlAl-CeO wherein
2Compound aluminide preparation technology of coating is to be made up of following operation:
(1) sample surfaces cleans; The processing of powder high-temperature stable
(2) NlAl-CeO
2Coelectrodeposition
Solution composition:
NlSO
47H
2O 200-250g/l
NlCl
245-50g/l
H
3BO
335-38g/l
Dehydrogenation tensio-active agent 0.05-0.1g/l
P
H4.0-4.5
D
K2-4A/dm
2
T 50-55℃
t 40-60min
(3) aluminising
Penetration enhancer composition: FeAL powder+NH
4Cl(1%wt)
Aluminising mode pack cementation aluminizing
Temperature/time: 850 ℃ of-900 ℃/8-10h
1000℃-1100℃/0.5-1.5h
NiAL-Y
2O
3(or Gd
2O
3) compound aluminide preparation technology is as follows:
(1) sample surfaces cleans; The processing of powder high-temperature stable
(2) NlAl-Y
2O
3(or Gd
2O
3) coelectrodeposition
Solution composition:
NlSO
47H
2O 100-120g/l
Na
4P
2O
460-65g/l
NaHSO
31-2g/l
Na
3C
6H
5O
72H
2O 55-60g/l
C
6H
8O
7、H
2O 12-15g/l
NaCl 25-30g/l
NH
3、H
2O（28%） 30-50g/l
P
H7.5-8.0
T 35-40℃
D
K1.5-2A/dm
2
t 60-80min
(3) aluminising
Penetration enhancer composition: FeAl powder+NH
4Cl(1%wt)
Aluminising mode: pack cementation aluminizing
900 ℃ of temperature
Time 8-10h
NlAl-La
2O
3Compound aluminide preparation technology is as follows:
(1) sample surfaces cleans; The processing of powder high-temperature stable
(2) NlAl-La
2O
3Coelectrodeposition
Solution composition:
NlSO
47H
2O 120-150g/l
NH
4Cl 15-20g/l
H
3BO
323-25g/l
P
H5.6-6.0
D
K2-3A/dm
2
t 60-80min
T 25-35℃
(3) aluminising
Penetration enhancer composition: FeAL powder+NH
4Cl(1%wt)
Aluminising mode: pack cementation aluminizing
Temperature: 900 ℃
Time: 8-10h
Feature of the present invention also is to provide a kind of compound aluminium chromium dosed thing coating that contains the disperse rare earth oxide, i.e. NlAL (Cr)-rare earth oxide coating.The preparation technology of above-mentioned coating is made up of following operation:
Sample surfaces cleans; The processing of powder high-temperature stable
NI-rare earth oxide coelectrodeposition
Chromium plating
Vacuum heat diffusion treatment
Aluminising
Surface aftertreatment (cleaning)
Wherein the coelectrodeposition processing parameter is as follows:
Solution composition:
NlSO
47H
2O 200-250g/l
NlCl
245-50g/l
H
3BO
335-38g/l
Dehydrogenation tensio-active agent 0.05-0.1g/l
P
H4.0-4.5
D
K2-4A/dm
2
T 50-55℃
t 40-60min
The chrome-plated process parameter:
Plating bath:
Chromic anhydride Cr
2O
3200-250g/l
Sulfuric acid H
2SO
42.0-2.5g/l
Temperature 60-65 ℃
Current density 30-40A/dm
2
The vacuum heat diffusion treatment processing parameter:
Temperature 900-1000 ℃
Time 8-20h
Vacuum tightness 10
-4-10
-5
Aluminising:
Penetration enhancer composition: FeAL powder+NH
4CL(1%wt)
Temperature 850-900 ℃/7-9h
Time 1050-1100 ℃/0.5-1.5h
Above-mentioned NlAL(Cr) its electro-deposition process parameter of the best of compound aluminium chromium dosed thing coating is:
Plating bath technology:
NlSO
47H
2O 250g/l
NlCl
250g/l
H
3BO
338g/l
Dehydrogenation tensio-active agent 0.1g/l
P
H4.3
D
K2A/dm
2
T 50℃
t 40min
The chrome-plated process parameter:
Plating bath:
Chromic anhydride Cr
2O
3250g/l
Sulfuric acid H
2SO
42.5g/l
65 ℃ of temperature
Current density 35A/dm
2
Vacuum heat diffusion treatment:
Temperature: 900 ℃
Time 8-10h
Vacuum tightness 10
-5
Embodiment 1-contains disperse CeO
2The NlAL-CeO of particle
2Compound aluminide coating and preparation method thereof.(low temperature oozes type)
(1) Nl-CeO
2The preparation technology of layer
By suitable stirring tiny rare earth oxide particle is suspended in the following plating bath equably, with the method Nl and the CeO of galvanic deposit
2Its deposition, thereby obtain to contain the Nl-CeO of tiny disperse rare earth oxide particle
2The coelectrodeposition layer.
Solution composition:
NlSO
47H
2O 250g/l
NlCl
250g/l
H
3BO
338g/l
Tensio-active agent 0.1g/l
P
H4.3
D
K2A/dm
2
T 50℃
t 40min
(2) aluminising:
At Nl-CeO
2Carrying out aluminising on the coelectrodeposition layer handles.
Penetration enhancer composition: FeAL powder+NH
4Cl(1%wt)
Aluminising mode: pack cementation aluminizing
Temperature: 900 ℃
Time: 8h
Embodiment 2-contains disperse CeO
2The NlAl-CeO of particle
2
Compound aluminide coating (high temperature oozes type)
(1) Nl-CeO
2Preparation technology of coating is with embodiment 1,
(2) alumetizing process:
Penetration enhancer composition: FeAL powder+NH
4Cl(1%wt)
Aluminising mode: pack cementation aluminizing
Temperature: 1050 ℃
Time: 45min
Embodiment 3-contains disperse La
2O
3Compound aluminide coating (the NlAl-La of particle
2O
3)
(1) coelectrodeposition technology
NlSO
47H
2O 150g/l
NH
4Cl 20g/l
H
3BO
425g/l
PH 5.6-6
DK 2A/dm
2
t 80min
T 25-35℃
(2) alumetizing process is identical with embodiment 1
Embodiment 4-contains disperse Y
2O
3(or Gd
2O
3) the compound aluminide coating (NlAl-Y of particle
2O
3)
(1) coelectrodeposition technology:
NlSO
47H
2O 120g/l
Na
4P
2O
465g/l
NaHSO
32g/l
Na
3C
6H
5O
72H
2O 60g/l
C
6H
8O
7H
2O 15g/l
NaCl 30g/l
NH
3H
2O（28%） 30-50g/l
P
H7.5
T 35℃
D
K1.5A/dm
2
t 80min
(2) alumetizing process is with embodiment 1
Embodiment 5-contains disperse CeO
2Compound aluminium chromium dosed thing coating.
(1) preparation of deposition layer
Nl-CeO
2Preparation with embodiment 1
Chromed processing condition are:
CrO
3250g/l
H
2SO
42.5g/l
T 65℃
D
K35A/dm
2
t 10-20min
(2) vacuum DIFFUSION TREATMENT:
T 900℃
t 8-10h
Vacuum tightness 10
-5
(3) alumetizing process is with embodiment 1
Experimental result by the coating that the foregoing description obtained is as follows:
1, the antioxidant property of coating: oxidation experiment carries out under 1100 ℃, every interval weighing sample weight about 20 hours, and the accumulation oxidization time is 200h, experimental result shows that the increasing weight of oxidation and the time of coating are parabola rule, i.e. △ W
2(gain in weight)=K
p(para-curve constant) the t(time).K in the formula
pBe worth more for a short time, anti-oxidation of coating is strong more.The K of simple NlAl coating
p=2.11～3.47 * 10
-11(g
2.cm
-4.s
-1), NlAl-CeO
2The K of compound coating
p=8.0～12.0 * 10
-12, NlAl-Y
2O
3Coating is K
p=6.0～10.0 * 10
-12, NlAl-La
2O
3The K of coating
p=3.5～10.0 * 10
-12, NlAl-Gd
2O
3The K of coating
p=2.7～7.3 * 10
-12From K
pBe worth as can be known, the simple aluminide coating of compound coating antioxidant property is significantly improved, and adds La
2O
3And Gd
2O
3The improvement effect more effective.
NlAl(Cr)-CeO
2The K of coating
p=2.0～8.0 * 10
-12(g
2.cm
-4.s
-1), its antioxidant property also has clear improvement.
2, the anti-cyclic oxidation performance of coating
NlAL-CeO
2(950 ℃/50min+ room temperature/10min), the loss of weight phenomenon do not occur, and simple NlAL coating just produces tangible loss of weight after about 50 circulations, the amount of peeling off of oxide film increases coating greatly in 100 circulation backs of experience.
NlAl-Y
2O
3(La
2O
3, Gd
2O
3) coating 1100 ℃ the experience 20 times the circulation after the spalling of oxide film total amounts be about 0.2～0.5mg/cm
2, and simple calorized coating is 1.1～1.5mg/cm
2, and simple calorized coating is about 1.1～1.5mg/cm
2
NlAL(Cr)-CeO
2The amount of peeling off of the oxide film of coating is about 0.3～0.6mg/cm
2, therefore, to add after the rare earth oxide, the oxide film adhesivity of coating strengthens, and the ability of anti-cyclic oxidation improves.
3, the hot corrosion resistance of coating
NlAL-CeO
2Coating adopts the Na at 900 ℃
2SO
4The method that corrodes survey its gain in weight variation in back in the fused salt is estimated.Gain in weight behind the compound coating brine corrosion 200h is about: 1.8～2.2mg/cm
2, and simple aluminide coating is about 3.5～5.0mg/cm
2
NlAL-Y
2O
3(La
2O
3, Gd
2O
3) at 850 ℃ Na
2SO
4+ 30wt% K
2SO
4The weightening finish of middle brine corrosion 100h is about 0.8～1.10mg/cm
2, simple NlAL coating is about 1.6mg/cm
2
NlAl(Cr)-CeO
2Coating is at 900 ℃ Na
2SO
4Gain in weight among the+25wt% NaCl behind the corrosion 100h is about 2.5～4.5mg/cm
2, simple coating is 5.5～7.0mg/cm
2
Therefore, the hot corrosion resistance of the simple aluminide coating of compound aluminide coating also increases.
Claims (10)
1, a kind of resistance to high temperature corrosion coating is characterized in that described coating means mutually and the compound aluminide coating of NiAl-rare earth oxide type that contain disperse rare earth oxide particle based on β-NiAl.
2,, it is characterized in that following four kinds of coating resistance to high temperature corrosion performances are for best according to the described coating of claim 1:
(1) NlAl-CeO
2Compound aluminide coating
(2) NlAl-Y
2O
3Compound aluminide coating
(3) NlAl-La
2O
3Compound aluminide coating
(4) NlAl-Gd
2O
3Compound aluminide coating
3, a kind of preparation technology who obtains claim 1,2 described coatings that is exclusively used in is characterized in that it is made up of following operation:
4, according to right 3 described preparation technology of coating, it is characterized in that NlAl-CeO
2Compound aluminide preparation technology of coating is as follows:
(1) sample surfaces cleans; The processing of powder high-temperature stable,
(2) NiAl-CeO
2Coelectrodeposition
Solution composition:
NlSO
47H
2O 200～250g/l
NiCl
245～50g/l
H
3BO
335～38g/l
5, according to the described preparation technology of claim 3, it is characterized in that NlAl-Y
2O
3(or Gd
2O
3) compound aluminide preparation technology is as follows:
(1) sample surfaces cleans, the processing of powder high-temperature stable
(2) NlAl-Y
2O
3(or Gd
2O
3) coelectrodeposition
Solution composition:
NlSO
47H
2O 100～120g/l
Na
4P
2O
460～65g/l
NaHSO
31～2g/l
Na
3C
6H
5O
72H
2O 55～60g/l
C
6H
8O
7H
2O 1～15g/l
NaCl 25～30g/l
NH
3H
2O（28%） 30～50g/l
P
H7.5～8.0
T 35～40℃
D
K1.5/2A/dm
2
t 60～80min
(3) aluminising
Add the agent composition: FeAl powder+NH
4Cl(1%wt)
Aluminising mode: pack cementation aluminizing
900 ℃ of temperature
Time 8-10h
6, according to the described preparation technology of claim 3, it is characterized in that NiAl-La
2O
3Compound aluminide preparation technology is as follows:
(1) sample surfaces cleans; The processing of powder high-temperature stable
(2) NlAl-La
2O
3Coelectrodeposition
Solution composition:
NlSO
47H
2O 120～150g/l
NH
4Cl 15～20g/l
H
3BO
323～25g/l
P
H5.6～6.0
D
K2～3A/dm
2
t 60～80min
(3) aluminising
Penetration enhancer composition: FeAl powder+NH
4Cl(1%wt)
Aluminising mode: pack cementation aluminizing
Temperature: 900 ℃
Time: 8～10h
7, a kind of resistance to high temperature corrosion coating is characterized in that described coating means the compound aluminium chromium dosed thing coating that contains the disperse rare earth oxide, that is: NlAl(Cr)-the rare earth oxide coating.
8, a kind of being specifically designed to obtains the described preparation technology of coating of claim 7, it is characterized in that it is made up of following operation:
9,, it is characterized in that Nl-rare earth oxide coelectrodeposition processing parameter is as follows according to the described preparation technology of claim 8:
Solution composition:
NlSO
47H
2O 200～250g/l
NlCl
245～50g/l
H
3BO
335～38g/l
Dehydrogenation tensio-active agent 0.05～0.1g/l
P
H4.0～4.5
D
K2～4A/dm
2
T 50～55℃
t 40～60min
The chrome-plated process parameter:
Plating bath:
Plating acid anhydride CrO
3200-250g/l
Sulfuric acid H
2SO
42.0-2.5g/l
Temperature 60-65 ℃
Current density 30-40A/dm
2
The diffusing treatment process parameter of vacuum heat:
Temperature-time 900-1000 ℃
Time 8-20h
Vacuum tightness 10
-4-10
-5/ t
Aluminising
Penetration enhancer composition: FeAl powder+NH
4Cl(1%wt)
Temperature 850-900 ℃/7-9h
1050-1100/0.5-1.5h
10,, it is characterized in that best coelectrodeposition processing parameter is according to the described preparation technology of claim 9:
Solution composition
NlSO
47H
2O 250g/l
NlCl
250g/l
H
3O
338g/l
Dehydrogenation tensio-active agent 0.11g/l
PH 4～4.5
DK 2A/dm
2
T 50℃
t 40min
The chrome-plated process parameter:
Plating bath:
Chromic anhydride Cr
2O
3250g/l
Sulfuric acid H
2SO
42.5g/l
65 ℃ of temperature
Current density 35A/dm
2
Vacuum heat diffusion treatment:
900 ℃ of temperature
Time 8-10h
Vacuum tightness 10
-5/ t
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN91106106A CN1038052C (en) | 1991-05-13 | 1991-05-13 | Preparation process of high-temperature oxidation resistant coating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN91106106A CN1038052C (en) | 1991-05-13 | 1991-05-13 | Preparation process of high-temperature oxidation resistant coating |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN94112517A Division CN1040671C (en) | 1994-09-14 | 1994-09-14 | Preparation method of high-temperature heat corrosion resistant coating |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1066690A true CN1066690A (en) | 1992-12-02 |
| CN1038052C CN1038052C (en) | 1998-04-15 |
Family
ID=4907543
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN91106106A Expired - Fee Related CN1038052C (en) | 1991-05-13 | 1991-05-13 | Preparation process of high-temperature oxidation resistant coating |
Country Status (1)
| Country | Link |
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| CN (1) | CN1038052C (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102115864A (en) * | 2010-12-21 | 2011-07-06 | 苏州雅典娜科技有限公司 | High-temperature-resistant protective coating |
| CN102115863A (en) * | 2010-12-21 | 2011-07-06 | 苏州雅典娜科技有限公司 | High temperature resistant wearable protective coating |
| CN102776546A (en) * | 2011-05-11 | 2012-11-14 | 中国科学院金属研究所 | High temperature oxidation resistant NiAl-Y2O3 coating, its preparation method and its application |
| CN103343379A (en) * | 2013-07-12 | 2013-10-09 | 南昌航空大学 | Method for compositely plating Ni/CrAl/Y2O3 gradient plated layer on T91 steel surface |
| CN105624658A (en) * | 2014-10-31 | 2016-06-01 | 中国科学院金属研究所 | Active element modified aluminide coating and preparation process thereof |
| CN109920616A (en) * | 2019-03-27 | 2019-06-21 | 江苏瑞祥磁业有限公司 | Corrosion resistant permanent-magnet material |
| CN110491617A (en) * | 2019-08-21 | 2019-11-22 | 南通成泰磁材科技有限公司 | Anti-corrosion permanent-magnet material |
| CN111850529A (en) * | 2020-07-30 | 2020-10-30 | 西安热工研究院有限公司 | Anti-oxidation coating for high-temperature steam valve bolt of generator set and preparation method of anti-oxidation coating |
Families Citing this family (2)
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| CN1308496C (en) * | 2003-06-06 | 2007-04-04 | 吴化 | Electrodeposition composite plating method for improving metal surface high temperature and abrasion resistant performance |
| CN1296512C (en) * | 2003-09-10 | 2007-01-24 | 中国科学院金属研究所 | Chromizing coating modified by rare earth oxide and preparation method and application thereof |
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| CN1042738A (en) * | 1988-11-18 | 1990-06-06 | 鸡西市电缆桥架厂 | Purification process for zinc-nickel alloy plating of hydraulic mine props |
| CN1037552A (en) * | 1989-02-24 | 1989-11-29 | 鸡西煤矿专用设备厂 | Composite processing technology for resisting corrosion |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102115864A (en) * | 2010-12-21 | 2011-07-06 | 苏州雅典娜科技有限公司 | High-temperature-resistant protective coating |
| CN102115863A (en) * | 2010-12-21 | 2011-07-06 | 苏州雅典娜科技有限公司 | High temperature resistant wearable protective coating |
| CN102776546A (en) * | 2011-05-11 | 2012-11-14 | 中国科学院金属研究所 | High temperature oxidation resistant NiAl-Y2O3 coating, its preparation method and its application |
| CN102776546B (en) * | 2011-05-11 | 2015-03-18 | 中国科学院金属研究所 | High temperature oxidation resistant NiAl-Y2O3 coating, its preparation method and its application |
| CN103343379A (en) * | 2013-07-12 | 2013-10-09 | 南昌航空大学 | Method for compositely plating Ni/CrAl/Y2O3 gradient plated layer on T91 steel surface |
| CN103343379B (en) * | 2013-07-12 | 2016-03-02 | 南昌航空大学 | A kind of T91 steel surface recombination electroplated Ni/CrAl/Y 2o 3the method of gradient coating |
| CN105624658A (en) * | 2014-10-31 | 2016-06-01 | 中国科学院金属研究所 | Active element modified aluminide coating and preparation process thereof |
| CN105624658B (en) * | 2014-10-31 | 2017-12-15 | 中国科学院金属研究所 | A kind of active element modified aluminide coating and its preparation technology |
| CN109920616A (en) * | 2019-03-27 | 2019-06-21 | 江苏瑞祥磁业有限公司 | Corrosion resistant permanent-magnet material |
| CN110491617A (en) * | 2019-08-21 | 2019-11-22 | 南通成泰磁材科技有限公司 | Anti-corrosion permanent-magnet material |
| CN111850529A (en) * | 2020-07-30 | 2020-10-30 | 西安热工研究院有限公司 | Anti-oxidation coating for high-temperature steam valve bolt of generator set and preparation method of anti-oxidation coating |
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| CN1038052C (en) | 1998-04-15 |
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