CN108611588A - A kind of alloy coat and preparation method thereof of high temperature oxidation resisting and sulfur resistive, chlorine corrosion - Google Patents
A kind of alloy coat and preparation method thereof of high temperature oxidation resisting and sulfur resistive, chlorine corrosion Download PDFInfo
- Publication number
- CN108611588A CN108611588A CN201810790628.4A CN201810790628A CN108611588A CN 108611588 A CN108611588 A CN 108611588A CN 201810790628 A CN201810790628 A CN 201810790628A CN 108611588 A CN108611588 A CN 108611588A
- Authority
- CN
- China
- Prior art keywords
- alloy
- alloy coat
- coating
- preparation
- coat
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/12—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
- C23C4/134—Plasma spraying
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
- C23C4/06—Metallic material
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Coating By Spraying Or Casting (AREA)
Abstract
The present invention relates to the alloy coat and preparation method thereof of a kind of high temperature oxidation resisting and sulfur resistive, chlorine corrosion, the ingredient of the alloy coat is CoNiMoCrAlSiY, wherein Ni：25 wt%~35 wt%, Mo：10 wt%~30 wt%, Cr：15 wt%~25 wt%, Al：3wt%~9 wt%, Si：1 wt%~4 wt%, Y：0.1 wt%~0.5 wt%, Co：Surplus.
Description
Technical field
The present invention relates to the alloy coats and preparation method thereof of a kind of high temperature oxidation resisting and sulfur resistive, chlorine corrosion, belong to thermal jet
Apply alloy coat technical field.
Background technology
Coke oven is the higher thermal technology's stove of efficiency in energy conversion device, and scattering and disappearing for coke oven heat is made of 4 parts：Red coke
It takes heat out of and accounts for about the 37% of coke oven heat loss, recycled by Dry Quenching Technology；The heat that coke oven flue exhaust gas is taken out of
Account for about 17%, has been recycled by coal damping or hot pipe technique；Furnace body surface heat loss accounts for about 10%, by furnace insulation come
It reduces；Only take the raw coke oven gas (coal gas without purified treatment) for accounting for about 36% heat loss out of, waste heat not yet fully achieves back
It receives.Raw coke oven gas is the gas of generation during coal coking, is flowed out from carbonization chamber through tedge along with the progress of process of coking.It is waste
The waste heat recovery of coal gas is significant to energy-saving and emission-reduction, is one of the effective way that resource utilization improves in coke-oven plant, and change
Kind environment builds the needs of green coke-oven plant.
The heatproof of tedge inner-wall material, etch resistant properties are one of the technical bottlenecks of raw coke oven gas waste heat recovery.Inner wall is direct
It is contacted with high temperature (650 DEG C~850 DEG C) raw coke oven gas, and contains oxygen, carbon monoxide, carbon dioxide, hydrogen sulfide, nitrogen in raw coke oven gas
Oxide, hydrogen, methane, steam, hydrogen chloride and compound fragrant hydrocarbon etc., ordinary carbon steel is at this temperature and environment, high temperature
Ablation is serious, cannot be satisfied working condition requirement.If improving inner cylinder material, only using the special alloy steel of high-temperature corrosion resistance, such as
The above steel of 120 rank of Kazakhstan, but its price just steeply rises.Tedge is connected with carbonizing chamber, once tedge is because of part
Thermal stress is concentrated, and causes inner wall to rupture, heat transferring medium is caused to reveal, it is easy to be entered carbonizing chamber, be directly affected coke making process, sternly
Production accident can be also caused when weight.In addition, coke oven operation can will appear coking phenomenon on increase in pipeline inner wall after a certain period of time
(coal tar and graphite attachment aggregation).Coking increases the resistance of motion of the raw coke oven gas in pipeline, and can block air flue when serious can not
Aspirate raw coke oven gas.In structural timber matrix surface prepares coating, engineering material matrix various functions surface can be assigned.Heat
Spraying technology is applied widely with its sprayed on material, be suitble to that endoporus spraying, coating layer thickness are controllable and range wide (several microns to several
Millimeter), the effective technique of advantages the become prepares coating such as technology stability is good, coating quality is reliable, and in space flight, navigate
Sky, automobile, machinery, the energy, metallurgy, petrochemical industry, ship etc. have been widely used.Thermal spraying be save precious materials,
Important means that is energy saving, improving product quality, extend product service life, reduce cost, improving effect.Rise inside pipe wall
Coating must have high temperature oxidation resisting and erosion-resisting characteristic just adapts to its complicated work condition environment requirement.In addition, coating is also
There should be high heat conduction characteristic, the waste heat of raw coke oven gas with maximum be recycled, by residual heat resources recycling.
There is researcher to be prepared for ceramic (glaze) coating in the design of tedge inner wall surface at present, to improve the resistance to height of inner wall
Temperature, corrosion resistance.But ceramic material differs larger with tedge metal base coefficient of thermal expansion, easily exists in heating and cooling process
Contact interface generates stress, is unfavorable for the two and combines.And the alloy coats such as NiAl, NiCr, CoNiCrAlY is used also to be difficult to reach
Satisfied high temperature oxidation resisting and anti-corrosion effects.
Invention content
In view of the problems of the existing technology, the purpose of the present invention is to provide a kind of alloy coats, with good
Heat conduction, high temperature oxidation resisting and corrosion resistance, and there is higher bond strength with metal base, waste coal can be effectively improved
The service life of gas Exposure degree engineering tedge.
Another object of the present invention is to provide the preparation methods of a kind of high temperature oxidation resisting and erosion-resisting alloy coat.
In a first aspect, the present invention provides a kind of alloy coat of high temperature oxidation resisting and sulfur resistive, chlorine corrosion, which is characterized in that
The ingredient of the alloy coat is CoNiMoCrAlSiY, wherein Ni：25wt%~35wt%, Mo：10wt%~30wt%,
Cr：15wt%~25wt%, Al：3wt%~9wt%, Si：1wt%~4wt%, Y：0.1wt%~0.5wt%, Co：Surplus.
According to the present invention, Si is introduced into CoNiCrAlY alloy coats can promote the formation of glass phase in coating, to
The consistency for increasing coating, stops the infiltration of corrosive medium.Mo can further increase the pyro-oxidation resistance of alloy coat
And corrosion resistance.In addition, Si, Mo also contribute to the binding performance and anticoking capability of coating.Therefore, conjunction of the invention
Gold plating has unique high temperature resistant, anti-oxidant, anticorrosive and high heat conduction ability, and high with base material bond strength, such as can
For 40MPa or more.The alloy coat of the present invention is especially suitable for being sprayed on crude-gas sensible heat recycling engineering tedge inner wall, has
Effect improves the service life of tedge.
Preferably, the alloy coat contains：Ni：25wt%~30wt%, Mo：10wt%~25wt%, Cr：15wt%
~20wt%, Al：5wt%~8wt%, Si：2wt%~4wt%, Y：0.3wt%~0.5wt%, Co：Surplus.
Preferably, the alloy coat thickness is 50~350 μm.
Second aspect, the present invention provide the preparation method of any of the above-described alloy coat, using plasma spray technology, in base material table
Face sprays CoNiMoCrAlSiY alloy coats.
According to the preparation method, can obtain melting effect it is good, with the high CoNiMoCrAlSiY alloys of base material bond strength
Coating.
Preferably, the plasma spray technology is atmospheric plasma spraying technology.
Preferably, the technological parameter of the atmospheric plasma spraying technology includes：Plasma gas argon flow amount is 30
~60slpm, plasma gas hydrogen flowing quantity are 4~10slpm, and spraying current is 300~600A, and voltage is 30~75V, powder feeding
Carrier gas argon flow amount is 3~4slpm, and powder feeding rate is 30~60g/min.
The base material can be metal base, preferably the rising inside pipe wall of coke oven.
Description of the drawings
Fig. 1 is 1 floating coat sample digital photograph of embodiment and section SEM pictures.
Fig. 2 is coating sample digital photograph and section SEM pictures after thermal shock in embodiment 2.
Fig. 3 is coating sample section SEM pictures after being on active service in embodiment 3.
Fig. 4 is 1 floating coat sample digital photograph of comparative example.
Fig. 5 is 2 floating coat sample digital photograph of comparative example.
Fig. 6 is 6 floating coat specimen cross section SEM pictures of comparative example.
Specific implementation mode
It is further illustrated the present invention below in conjunction with attached drawing and following embodiments, it should be appreciated that attached drawing and following embodiments
It is merely to illustrate the present invention, is not intended to limit the present invention.
It is disclosed a kind of alloy coat, the ingredient of the alloy coat is CoNiMoCrAlSiY.
The alloy coat contains Si, can promote the formation of glass phase in coating, to increase the consistency of coating, blocking
The infiltration of corrosive medium, and improve the binding performance of coating.In addition, the silica that Si is generated during the work time can be great
The external diffusion of metallic element and the interior diffusion of oxygen and carbon atom are limited, is to inhibit one of optimal material of catalytic coking effect.
So Si helps to improve the anticoking capability of coating.In some embodiments, the content of Si can be 1wt% in alloy coat
~4wt%.If the content of Si is less than 1wt%, it is difficult to play a significant role；If the content of Si is more than 4wt%, easily lead
Cause coating brittleness excessive.In preferred embodiment, the content of Si can be 2wt%~4wt%, can obtain in the range
The preferable coating of comprehensive performance.
The alloy coat contains Mo, and Mo reduces the diffusion in alloy by improving diffusion activation energy, to enhance between atom
Binding force improves the hardness and elevated temperature strength of alloy, and Mo can also promote the formation of Laves phases in coating, to further carry
The pyro-oxidation resistance and corrosion resistance of high alloy coating.In addition, Mo can cover metal tube surface catalytic active center
And then the carbon layer on surface attachment occurred in operational process is reduced, to also contribute to the anticoking capability of coating.Some realities
It applies in mode, the content of Mo can be 10wt%~30wt% in alloy coat.If the content of Mo is less than 10wt%, influence
The formation of Laves phases, and be difficult to cover metal tube surface catalytic active center, cause coating high temperature oxidation resisting, it is anticorrosive and
The decline of anticoking capability；If the content of Mo is more than 30wt%, coating mechanical property is influenced, coating croop property is caused to drop
It is low.In preferred embodiment, the content of Mo can be 10wt%~25wt%, can make the high-temperature anticorrosive of alloy in the range
Property, lasting elevated temperature strength and plasticity reach good fit.
In some embodiments, the Ni contents in alloy coat are 25wt%~35wt%.It can be in the content range
Obtain structure stability and the preferable alloy coat of high-temperature behavior.In preferred embodiment, Ni contents be 25wt%~
30wt%.
In some embodiments, the Cr contents in alloy coat are 15wt%~25wt%.It can be in the content range
Obtain mechanics and the superior alloy coat of corrosion-resistant comprehensive performance.Too low Cr can lead to the anti-oxidant and anticorrosive of alloy coat
Performance weakens significantly, and excessively high Cr additions can strongly facilitate the analysis of TCP (Topologically Close-Packed) phase
Go out, to damage the mechanical property of alloy.In preferred embodiment, in alloy coat Cr contents be 15wt%~
20wt%.
In some embodiments, the Al content in alloy coat is 3wt%~9wt%.It can be obtained in the content range
Obtain the superior alloy coat of comprehensive performance.Al is to form hardening constituent and fine and close Al2O3The necessary element of protective film.Higher Al
Content can reduce the dilution rate of rich Al phases, and the long-term oxidation resistance to improving coating can be that beneficial but excessively high Al contains
Amount can cause coating brittleness excessively high.In preferred embodiment, Al content is 5wt%~8wt% in alloy coat.
In some embodiments, the Y contents in alloy coat are 0.1wt%~0.5wt%.It can be in the content range
The adhesiveness of oxidation film is effectively improved, and improves the resistance to high temperature oxidation and hot corrosion resistance of coating.But the dissolvings of Y in the alloy
Spend it is low, addition excessively can crystal boundary etc. formed segregation, in oxidation process, segregation position easily occurs preferential oxidation and is formed
Local internal oxidition area, causes the decline of coating resistance to high temperature oxidation and hot corrosion resistance.In preferred embodiment, alloy applies
Y contents are 0.3wt%~0.5wt% in layer.
In one embodiment, the chemical composition of alloy coat is as follows：
Ni:25wt%~35wt%,
Mo:10wt%~30wt%,
Cr:15wt%~25wt%,
Al:3wt%~9wt%,
Si:1wt%~4wt%,
Y:0.1wt%~0.5wt%,
Co:Bal. (surplus).
In the disclosure, the thickness of alloy coat can be 50~350 μm, can be with effective protection Metal Substrate in the thickness range
Material simultaneously obtains preferable bond strength.It is highly preferred that the thickness of alloy coat can be 100~300 μm.
The alloy coat of the disclosure has higher bond strength (being, for example, 40MPa or more) with base material, and coating has uniqueness
High temperature oxidation resisting, sulfur resistive, chlorine corrosion, high heat conduction and heat shock resistance ability, be suitble to be sprayed on containing H2S、SO2, the corrosion such as HCl
The metalwork surface (such as rising inside pipe wall etc. of coke oven) of property high-temperature gas, can effectively improve the necks such as energy-saving and emission-reduction, environmental protection
The service life of domain pipe fitting mechanism.
The alloy coat of the disclosure can be used plasma spray technology and be made.
In preferred embodiment, using atmospheric plasma spraying technology, CoNiMoCrAlSiY powders are deposited on base material
Surface obtains CoNiMoCrAlSiY alloy coats.
Base material is not particularly limited, and may be, for example, metal base.The alloy coat of the disclosure is especially suitable for being sprayed at and contain
H2S、SO2, metalwork surface in the corrosive high temperatures gaseous environment such as HCl.
Before spraying, base material preferably carries out surface preparation, such as blasting treatment, cleaning, compressed air drying.
CoNiMoCrAlSiY powders can have component identical with CoNiMoCrAlSiY alloy coats.
CoNiMoCrAlSiY powders are made by the following method：Powder by atomization method.
The grain size of CoNiMoCrAlSiY powders can be 25~60 μm.
The technological parameter of above-mentioned atmospheric plasma spraying technology may include：Plasma gas argon flow amount be 30~
60slpm, plasma gas hydrogen flowing quantity are 4~10slpm, and spraying current is 300~600A, and voltage is 30~75V, and powder feeding carries
Gas argon flow amount is 3~4slpm, and powder feeding rate is 30~60g/min, and spray distance is 80~130mm, preferably 120mm.Using
The technological parameter can be such that powder fully melts, and drop is fully sprawled, to obtain the coating of compact structure.
Embodiment is enumerated further below so that the present invention will be described in detail.It will similarly be understood that following embodiment is served only for this
Invention is further described, and should not be understood as limiting the scope of the invention, those skilled in the art is according to this hair
Some nonessential modifications and adaptations that bright the above is made all belong to the scope of protection of the present invention.Following examples are specific
Technological parameter etc. is also only an example in OK range, i.e. those skilled in the art can be done properly by the explanation of this paper
In the range of select, and do not really want to be defined in hereafter exemplary concrete numerical value.
In following embodiments, the preparation method of CoNiMoCrAlSiY alloy powders is：Powder by atomization method, first by metal original
Material melting is alloy melt, is then injected into the tundish on atomizer.When alloy melt passes through nozzle with
High-speed flow, which meets, to be atomized as tiny molten drop, and atomized droplet is rapidly solidificated into alloy powder in closed atomizing cup.
Bond strength test method is：It is detected by HB 5476 using universal testing machine.
Coating thermal conductivity test method is：Using laser heat conducting instrument testing coating thermal diffusion coefficient, pass through formula thermal conductivity
=thermal diffusion system × specific heat × density obtains the thermal conductivity of coating.
Embodiment 1
(1) base material is high temperature alloy.The pretreatment of metallic substrate surface to be sprayed：Sandblasting, ultrasonic cleaning, compressed air are blown
It is dry.
(2) CoNiMoCrAlSiY alloy powders are deposited on by metallic substrate surface using atmospheric plasma body technology.Alloy
Powdered ingredients are Ni：25wt%, Mo：10wt%, Cr：15wt%, Al：6wt%, Si：2wt%, Y：0.5wt%, Co：Surplus.
Spray parameters are：Argon flow amount 40slpm, hydrogen flowing quantity 9slpm, electric current 600A, power 45kW, powder feeding carrier gas flux
3.0slpm, powder feeding rate 35g/min, spray distance 120mm.
Fig. 1 is the digital photograph and cross-sectional SEM image of gained sample, and coating layer thickness is about 110 μm, and coating is close with base material
In conjunction with.Strength test is combined to sample, test value is 61.2 ± 1.5MPa.Coating thermal conductivity is 19.4W/ (mK) (600
DEG C), show that coating has preferable heat conductivility, in air medium, the oxidation weight gain of 900 DEG C of experiment 100h is coating
0.34g/cm2, show that coating has good pyro-oxidation resistance.
Embodiment 2
The preparation method is the same as that of Example 1, and by the sample thermal shock 50 times (900 DEG C~room temperature) of gained, Fig. 2 is coating sample after thermal shock
Product digital photograph and cross-sectional SEM image.Phenomena such as after thermal shock, coating is intact, flawless, peeling.Sample after thermal shock is tied
Strength test is closed, test value is 52.9 ± 4.2MPa.
Embodiment 3
(1) base material is crude-gas sensible heat recycling engineering tedge physical member.
(2) using atmospheric plasma body technology that CoNiMoCrAlSiY alloy powders are deposited on that treated, raw coke oven gas is shown
Recuperation of heat engineering tedge inner wall.Alloy powder ingredient is Ni：25wt%, Mo：10wt%, Cr：15wt%, Al：6wt%,
Si：2wt%, Y：0.5wt%, Co：Surplus.Spray parameters are：Argon flow amount 35slpm, hydrogen flowing quantity 5slpm, electric current 400A,
Power 32kW, powder feeding carrier gas flux 3.0slpm, powder feeding rate 35g/min.
(3) the band coating tedge of the inner wall of gained is on active service 1 year under actual condition.Tedge is dissected after military service
Analysis, the coating sample cross-sectional SEM image of interception are as shown in Figure 3.Coating is intact after military service, still combines closely with base material.
Embodiment 4
Difference from Example 1 is that alloy powder ingredient is Ni：25wt%, Mo：10wt%, Cr：15wt%, Al：
3wt%, Si：1wt%, Y：0.1wt%, Co：Surplus.Coating structure is fine and close, combines closely with base material.Coating is in air dielectric
In, the oxidation weight gain of 900 DEG C of experiment 100h is 0.36g/cm2。
Embodiment 5
Difference from Example 1 is, Ni：35wt%, Mo：30wt%, Cr：20wt%, Al：9wt%, Si：
4wt%, Y：0.5wt%, Co：Surplus.Coating structure is fine and close, combines closely with base material.In air medium, 900 DEG C are tried coating
The oxidation weight gain for testing 100h is 0.42g/cm2。
Embodiment 6
Difference from Example 1 is that alloy powder ingredient is Ni：30wt%, Mo：20wt%, Cr：20wt%, Al：
6wt%, Si：3wt%, Y：0.3wt%, Co：Surplus.Coating structure is fine and close, combines closely with base material.Coating is in air dielectric
In, the oxidation weight gain of 900 DEG C of experiment 100h is 0.37g/cm2。
Embodiment 7
Difference from Example 1 is that spray parameters are：Argon flow amount 57slpm, hydrogen flowing quantity 7slpm, electric current
580A, voltage 74V, powder feeding carrier gas flux 3.0slpm, powder feeding rate 40g/min, spray distance 120mm.Coating structure is fine and close,
It combines closely with base material, bond strength is 62.3 ± 2.0MPa.
Comparative example 1
As a comparison, being prepared for NiAl alloy epitaxy coating using atmospheric plasma spraying technology.The geomery of sample applies
The preparation of layer and test method are the same as embodiment 1.Fig. 4 is its digital photograph.Strength test is combined to sample, test value is
35.9±3.5MPa.Coating thermal conductivity is 64.2W/ (mK) (600 DEG C), and in air medium, 900 DEG C are tested 100h's to coating
Oxidation weight gain is 0.63g/cm2。
Comparative example 2
As a comparison, being prepared for CoNiCrAlY alloy coats using atmospheric plasma spraying technology.Alloy powder ingredient
For Ni：32wt%, Cr：21wt%, Al：8wt%, Y：0.5wt%, Co：Surplus.The preparation of the geomery, coating of sample and
Test method is the same as embodiment 1.Fig. 5 is its digital photograph.Strength test is combined to sample, test value is 51.0 ±
3.2MPa.In air medium, the oxidation weight gain of 900 DEG C of experiment 100h is 0.43g/cm to coating2。
Comparative example 3
Difference from Example 1 is that alloy powder ingredient is Ni：25wt%, Mo：3wt%, Cr：15wt%, Al：
6wt%, Si：2wt%, Y：0.5wt%, Co：Surplus.Strength test is combined to sample, test value is 51.8 ± 4.0MPa.
In air medium, the oxidation weight gain of 900 DEG C of experiment 100h is 0.41g/cm to coating2。
Comparative example 4
Difference from Example 1 is that alloy powder ingredient is Ni：25wt%, Mo：35wt%, Cr：15wt%, Al：
6wt%, Si：2wt%, Y：0.5wt%, Co：Surplus.In air medium, disbonding is tight after 900 DEG C of experiment 100h for coating
Weight.
Comparative example 5
Difference from Example 1 is that alloy powder ingredient is Ni：25wt%, Mo：10wt%, Cr：15wt%, Al：
6wt%, Y：0.5wt%, Co：Surplus.Anchoring strength of coating is 54.0 ± 2.5MPa.
Comparative example 6
Difference from Example 1 is that alloy powder ingredient is Ni：25wt%, Mo：10wt%, Cr：15wt%, Al：
6wt%, Si：8wt%, Y：0.5wt%, Co：Surplus.Fig. 6 is coating sample cross-sectional SEM image.There is part and tie in coating surface layer
Structure peeling shows that coating brittleness is excessive.
Claims (8)
1. the alloy coat of a kind of high temperature oxidation resisting and sulfur resistive, chlorine corrosion, which is characterized in that the ingredient of the alloy coat is
CoNiMoCrAlSiY, wherein Ni：25 wt%~35 wt%, Mo：10 wt%~30 wt%, Cr：15 wt%~25 wt%, Al：
3wt%~9 wt%, Si：1 wt%~4 wt%, Y：0.1 wt%~0.5 wt%, Co：Surplus.
2. alloy coat according to claim 1, which is characterized in that the alloy coat contains：Ni：25 wt%~30
Wt%, Mo：10 wt%~25 wt%, Cr：15 wt%~20 wt%, Al：5 wt%~8 wt%, Si：2 wt%~4 wt%, Y：0.3
Wt%~0.5 wt%, Co：Surplus.
3. alloy coat according to claim 1, which is characterized in that the alloy coat thickness is 50~350 μm.
4. the preparation method of the alloy coat described in a kind of any one of claims 1 to 3, which is characterized in that use thermal spraying
Technology sprays CoNiMoCrAlSiY alloy coats in substrate surface.
5. preparation method according to claim 4, which is characterized in that the plasma spray technology is atmospheric plasma spraying
Technology.
6. preparation method according to claim 5, which is characterized in that the technique of the atmospheric plasma spraying technology is joined
Number includes：Plasma gas argon flow amount is 30~60 slpm, and plasma gas hydrogen flowing quantity is 4~10 slpm, spraying electricity
Stream is 300~600 A, and voltage is 30~75 V, and powder feeding carrier gas argon flow amount is 3~4 slpm, and powder feeding rate is 30~60 g/
min。
7. preparation method according to any one of claims 4 to 7, which is characterized in that the base material is metal base.
8. preparation method according to claim 7, which is characterized in that the base material is the rising inside pipe wall of coke oven.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810790628.4A CN108611588B (en) | 2018-07-18 | 2018-07-18 | High-temperature oxidation resistant and sulfur and chlorine corrosion resistant alloy coating and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810790628.4A CN108611588B (en) | 2018-07-18 | 2018-07-18 | High-temperature oxidation resistant and sulfur and chlorine corrosion resistant alloy coating and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108611588A true CN108611588A (en) | 2018-10-02 |
| CN108611588B CN108611588B (en) | 2020-05-19 |
Family
ID=63666576
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810790628.4A Active CN108611588B (en) | 2018-07-18 | 2018-07-18 | High-temperature oxidation resistant and sulfur and chlorine corrosion resistant alloy coating and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108611588B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109023009A (en) * | 2018-10-10 | 2018-12-18 | 江苏启迪合金有限公司 | A kind of thermal spraying alloy of high temperature oxidation resisting and its preparation method and application |
| CN109722617A (en) * | 2018-12-24 | 2019-05-07 | 万华化学集团股份有限公司 | It is a kind of to wash away the preparation method of composite coating in environment for the high chlorine height of high temperature |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102828137A (en) * | 2012-08-31 | 2012-12-19 | 华南理工大学 | High-temperature alloy surface nanometer composite coating and preparation method thereof |
| CN102888583A (en) * | 2012-10-29 | 2013-01-23 | 中国科学院上海硅酸盐研究所 | CoNiCrAlY coating and production process and application thereof |
| CN107208892A (en) * | 2014-12-24 | 2017-09-26 | 安萨尔多能源公司 | Supporting member for the thermal insulation tile of gas-turbine combustion chamber |
-
2018
- 2018-07-18 CN CN201810790628.4A patent/CN108611588B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102828137A (en) * | 2012-08-31 | 2012-12-19 | 华南理工大学 | High-temperature alloy surface nanometer composite coating and preparation method thereof |
| CN102888583A (en) * | 2012-10-29 | 2013-01-23 | 中国科学院上海硅酸盐研究所 | CoNiCrAlY coating and production process and application thereof |
| CN107208892A (en) * | 2014-12-24 | 2017-09-26 | 安萨尔多能源公司 | Supporting member for the thermal insulation tile of gas-turbine combustion chamber |
Non-Patent Citations (3)
| Title |
|---|
| TOTO SUDIRO: "High Temperature Corrosion of CoNiCrAlY-Si Alloys in an Air-Na2SO4-NaCl Gas Atmosphere", 《MATERIALS TRANSACTIONS》 * |
| Y.ICHIKAWA: "Adhesion Study of Cold-Sprayed CoNiCrAlY-Mo Coating of Inconel 625 using the Laser Shock Adhesion Test(LASAT)", 《MATERIALS SCIENCE FORUM》 * |
| 姜杰: "等离子体喷涂CoNiCrAlY涂层的抗氧化性能", 《第十二届国际热喷涂研讨会论文暨第十三届全国热喷涂年会论文》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109023009A (en) * | 2018-10-10 | 2018-12-18 | 江苏启迪合金有限公司 | A kind of thermal spraying alloy of high temperature oxidation resisting and its preparation method and application |
| CN109722617A (en) * | 2018-12-24 | 2019-05-07 | 万华化学集团股份有限公司 | It is a kind of to wash away the preparation method of composite coating in environment for the high chlorine height of high temperature |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108611588B (en) | 2020-05-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8574686B2 (en) | Microwave brazing process for forming coatings | |
| JP4653721B2 (en) | Ni-based self-fluxing alloy powder for thermal spraying, method for producing the same, and self-fluxing alloy spray coating obtained using the powder | |
| CN109355652A (en) | Laser melting coating Co-based alloy powder and preparation method thereof | |
| CN109351957A (en) | Laser melting coating iron(-)base powder and preparation method thereof | |
| JP5843291B2 (en) | Composite sprayed coating | |
| CN115286944B (en) | High-temperature corrosion-resistant glass ceramic composite coating and preparation method thereof | |
| EP1390549B1 (en) | Metal-zirconia composite coating | |
| CN108611588A (en) | A kind of alloy coat and preparation method thereof of high temperature oxidation resisting and sulfur resistive, chlorine corrosion | |
| US20080113105A1 (en) | Coating Formed By Thermal Spraying And Methods For The Formation Thereof | |
| CN110965005A (en) | High-temperature corrosion resistant coating on surface of heating furnace radiation area collecting pipe and preparation method thereof | |
| JP5489519B2 (en) | Coating material, coating method, and blade with shroud | |
| US20110165334A1 (en) | Coating material for metallic base material surface | |
| CN105734480B (en) | Method for improving corrosion resistance of lead-cooled neutron reactor structural component | |
| Pavan et al. | Review of ceramic coating on mild steel methods, applications and opportunities | |
| Modi et al. | A study of high-velocity combustion wire molybdenum coatings | |
| Student et al. | High-temperature corrosion of electric-arc coatings sprayed from powder core wires based on the Fe–Cr–B–Al system | |
| JP4475998B2 (en) | Method for forming corrosion-resistant laminated film and corrosion-resistant laminated film | |
| CN109023009A (en) | A kind of thermal spraying alloy of high temperature oxidation resisting and its preparation method and application | |
| CN1045635C (en) | Cermet coating preventing liquid sludge-removing furnace from iron-separating corrosion | |
| JPH07830B2 (en) | Surface coating method for metallic materials | |
| CN106282886B (en) | A kind of High Speed Electric Arc Spraying liquid metal ceramic coating and preparation method thereof | |
| CN109304561B (en) | Cermet type arc spraying flux-cored wire | |
| Milan Shahana et al. | High-Temperature Oxidation and Hot Corrosion of Thermal Spray Coatings | |
| JPS6320441A (en) | Thermal spraying method | |
| Li et al. | A Novel Bond Coat with Excellent Adhesive Strength Deposited by Plasma-Spraying of Mo-Clad Core-Shell-Structured Metal Powders |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |