CN109022926A - A kind of high temperature resisting corrosion resisting hot spray wire and preparation method thereof - Google Patents
A kind of high temperature resisting corrosion resisting hot spray wire and preparation method thereof Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C19/00—Alloys based on nickel or cobalt
- C22C19/03—Alloys based on nickel or cobalt based on nickel
- C22C19/05—Alloys based on nickel or cobalt based on nickel with chromium
- C22C19/051—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W
- C22C19/052—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W with the maximum Cr content being at least 40%
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- C22C1/02—Making non-ferrous alloys by melting
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
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- C22C—ALLOYS
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- C22C19/03—Alloys based on nickel or cobalt based on nickel
- C22C19/05—Alloys based on nickel or cobalt based on nickel with chromium
- C22C19/058—Alloys based on nickel or cobalt based on nickel with chromium without Mo and W
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C27/00—Alloys based on rhenium or a refractory metal not mentioned in groups C22C14/00 or C22C16/00
- C22C27/06—Alloys based on chromium
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- C22C30/00—Alloys containing less than 50% by weight of each constituent
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- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/02—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working in inert or controlled atmosphere or vacuum
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/10—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of nickel or cobalt or alloys based thereon
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/16—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of other metals or alloys based thereon
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- 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
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Abstract
The invention belongs to thermal spraying material fields, more particularly to a kind of high temperature resisting corrosion resisting sprayed on material and preparation method thereof, each component mass percent in the hot spray wire are as follows: Cr:45-49%, Ti:2-3%, C:0.05-0.3%, active element: 0.1-5%, remaining is Ni and impurity, wherein, impurity are as follows: O:0.02% or less, P:0.05% hereinafter, S:0.01% hereinafter, and meet Ni/Cr mass ratio be 0.9-1.1.Contain more Cr and Ni element in the present invention, stable austenite structure can be formed, it is dissolved more alloying elements, further increase the stability of system, elevated temperature strength can be improved in the addition of C, by the control of Ni/Cr mass ratio between 0.9-1.1, processing performance can be improved, be easily processed into silk；The activated nitrogen atom that ammonia cracks out in preparation process can form hard nitride with Ti, Si, B etc., be pinned at grain boundaries, prevent Austenite Grain Growth, deformation, improve stabilization of austenite, and then improve high temperature corrosion and wearability.
Description
Technical field
The invention belongs to thermal spraying material fields, and in particular to a kind of high temperature resisting corrosion resisting hot spray wire and its preparation side
Method.
Background technique
Four main tubes of boiler (water screen tube, superheater tube, reheater tube and economizer tube) covers whole heating surfaces of boiler,
Subject the effect of the pressure and some chemical components of working medium inside them, outside subjects high temperature, the environment for corroding and wearing
It influences, is reconciled between water and fire, be the place that contradiction is concentrated, so being easy to that failure and leakage problem occurs.Four-tube leakage
Accident is more, not only constitutes and seriously threatens to the stable operation of unit, influences the completion of power generation index and economic benefit is caused to drop
It is low, but also directly influence the normal consistency of power grid.
The ash cutting and mechanical wear of pulverized-coal fired boiler heating surface are to influence the main reason for boiler long-term safety is run,
Long-time hand is worn and thinning tube wall, since strength reduction causes pipe to reveal.In addition, the alkali metal in ash is given birth at high temperature
Change, with the SO in flue gas3Composite sulfur hydrochlorate is generated, condenses on tube wall, destroys the oxidation film of tube wall surface, is i.e. generation high temperature is rotten
Erosion.Therefore, wearability, high temperature resisting corrosion resisting performance and the Sulfate Corrosion Resistance for improving four main tubes of boiler surface can be weighed extremely
It wants.
Summary of the invention
In order to solve the problems, such as that four main tubes of boiler is leaked because of frayed and corrosion, the invention discloses a kind of resistant to high temperatures
Corrosion-resistant hot spray wire and preparation method thereof, the hot spray wire have wear-resistant, high temperature resisting corrosion resisting performance and resistant to sulfur
The superperformance of hydrochlorate corrosion.
To achieve the goals above, the present invention adopts the following technical scheme:
A kind of high temperature resisting corrosion resisting hot spray wire, each component mass percent in the hot spray wire are as follows: Cr:45-
49%, Ti:2-3%, C:0.05-0.3%, active element: 0.1-5%, remaining is Ni and impurity, wherein impurity are as follows: O:
0.02% hereinafter, P:0.05% hereinafter, S:0.01% hereinafter, and meet Ni/Cr mass ratio be 0.9-1.1.Contain in system
More Cr and Ni element, can form stable austenite structure, be dissolved more alloying elements, and the addition of C can be improved
Elevated temperature strength.It is demonstrated experimentally that processing performance can be improved, be easily processed between 0.9-1.1 the control of Ni/Cr mass ratio
Silk.
Preferably, above-mentioned active element is one or more of Fe, Mn, Si, Zr, V, Mo, B.
Preferably, each component mass percent in above-mentioned hot spray wire are as follows: Cr:45-49%, Ti:2-3%, C:0.05-
0.3%, Fe:0.1-0.5%, Mn:0.5-1%, Si:0.5-1%, remaining is Ni and impurity, wherein impurity are as follows: O:0.02%
Hereinafter, P:0.05% hereinafter, S:0.01% hereinafter, and meet Ni/Cr mass ratio be 0.9-1.1.On the one hand Si has smaller
Atomic radius, can to oxide regions spread participate in reaction, and then increase oxide compactness, further increase anti-corrosive properties
Can, it can significantly resist the corrosion of sulfuric acid, sulfate；On the other hand can occur with the carbon in base alloy material to be sprayed
Reaction generates silicon carbide, and silicon carbide is a kind of superhard substance, itself has lubricity, and wear-resistant, is atomic crystal, high
It is anti-oxidant when warm, moreover it is possible to resist cooling thermal impact, it helps to improve high temperature corrosion-resisting performance.
Preferably, each component mass percent in above-mentioned hot spray wire are as follows: Cr:45-49%, Ti:2-3%, C:0.05-
0.3%, Si:0.5-1%, Zr:1-2%, remaining be Ni and impurity, wherein impurity are as follows: O:0.02% hereinafter, P:0.05% with
Under, S:0.01% is hereinafter, and meeting Ni/Cr mass ratio is 0.9-1.1.Ti and Zr is carbide, all can be excellent
It reacts to form carbide with the carbon in basis material prior to Cr, Cr generates Cr because reacting with carbon in reduction system23C6And it consumed
More, this can not only be reduced because of Cr2O3Content reduces and keeps oxidation film loose, and then the case where influence high temperature corrosion-resisting performance, also
The case where causing intergranular corrosion resistance performance to decline because of local chromium dilution can be avoided as far as possible.In addition, Zr will not be easy as Ti
Oxidation and nitridation, therefore, compared with being individually added into Ti, the addition of Zr may insure the fixation to carbon, to reduce the negative shadow of carbon
It rings.
Preferably, each component mass percent in above-mentioned hot spray wire are as follows: Cr:45-49%, Ti:2-3%, C:0.05-
0.3%, Zr:1-2%, V:0.1-0.5%, B:1-2%, remaining is Ni and impurity, wherein impurity are as follows: O:0.02% is hereinafter, P:
0.05% hereinafter, S:0.01% hereinafter, and meet Ni/Cr mass ratio be 0.9-1.1.V is also that a kind of strong carbide forms member
Element is used for fixed carbon.
Preferably, each component mass percent in above-mentioned hot spray wire are as follows: Cr:45-49%, Ti:2-3%, C:0.05-
0.3%, Zr:1-2%, Mo:0.1-0.5%, remaining is Ni and impurity, wherein impurity are as follows: O:0.02% is hereinafter, P:0.05%
Hereinafter, S:0.01% is hereinafter, and meeting Ni/Cr mass ratio is 0.9-1.1.The addition of Mo can be improved coating and be situated between in oxidisability
Corrosion resistance in matter and reductant.
Preferably, each component mass percent in above-mentioned hot spray wire are as follows: Cr:45-49%, Ti:2-3%, C:0.05-
0.3%, Si:0.1-0.5%, Zr:1-2%, B:1-2%, remaining be Ni and impurity, wherein impurity are as follows: O:0.02% hereinafter,
P:0.05% hereinafter, S:0.01% hereinafter, and meet Ni/Cr mass ratio be 0.9-1.1.
Preferably, each component mass percent in above-mentioned hot spray wire are as follows: Cr:45-49%, Ti:2-3%, C:0.05-
0.3%, Si:0.1-0.8%, Zr:1-2%, Mo:0.1-0.5%, B:0.1-0.5%, remaining is Ni and impurity, wherein impurity
Are as follows: O:0.02% hereinafter, P:0.05% hereinafter, S:0.01% hereinafter, and meet Ni/Cr mass ratio be 0.9-1.1.
A kind of preparation method of high temperature resisting corrosion resisting hot spray wire, specific steps are as follows:
(1) in the mixed atmosphere of ammonia and argon gas, each raw material component is weighed in proportion, according to Ni, Cr, Ti, activity member
The sequence melting of element and remaining component keeps the temperature 1-5h, then pours into alloy pig；
(2) alloy pig is heated to 1100-1200 DEG C, is forged into the blank of 50 × 50mm；
(3) by blank at 900 DEG C -1000 DEG C, argon gas protection is lower to carry out first time annealing；
(4) at 1100-1250 DEG C, blank is swaged into the silk material that diameter is 1.6-2mm on swager；
(5) oxide skin and rust on silk material surface are removed by pickling；
(6) under protection of argon gas by silk material, 1100 DEG C of progress, second of dehydrogenation processing.
It is demonstrated experimentally that uniform and stable alloy compositions are contributed to form in strict accordance with the melting feeding sequence in step (1),
And then improve resistance to high temperature corrosion performance.The double annealing of step (6) helps to eliminate processing hardening and remaining internal stress, stablizes
Size.
Preferably, the volume ratio of ammonia and argon gas is 1:4-8 in the mixed atmosphere of ammonia and argon gas in above-mentioned steps (1).
Contain a large amount of Cr and Ni in silk material prepared by the present invention, will form austenite structure after being thermal sprayed into coating,
The activated nitrogen atom that ammonia Pintsch process generates can react to form nitride with Ti, Si, B etc., these nitride are all very hard
Firmly, it can be pinned at austenite grain boundary, to prevent growing up, deforming for austenite grain, improve the stability of austenite, into
And improve the high-temperature corrosion resistance performance of hot-spraying coating.But in order to prevent excessive formation nitride and consume Ti, Si, B
The volume ratio of ammonia and argon gas in the mixed atmosphere of nitrogen and argon gas is 1:4-8 by equal simple substance, the present invention, forms fraction nitridation
Object enables most of simple substance to retain.
The present invention has following the utility model has the advantages that a kind of (1) high temperature resisting corrosion resisting hot spray wire of the invention
(QDYC45), containing more Cr and Ni element, stable austenite structure can be formed, is dissolved more alloying elements, into
One step improves the stability of system, and elevated temperature strength can be improved in the addition of C, by the control of Ni/Cr mass ratio between 0.9-1.1,
Processing performance can be improved, be easily processed into silk；
(2) on the one hand the Si added in the present invention has lesser atomic radius, can spread and be participated in instead to oxide regions
It answers, and then increases the compactness of oxide, further increase antiseptic property, can significantly resist the corrosion of sulfuric acid, sulfate；Separately
On the one hand it can react with the carbon in base alloy material to be sprayed and generate silicon carbide, and silicon carbide is a kind of superhard object
Matter itself has lubricity, and wear-resistant, is atomic crystal, and when high temperature is anti-oxidant, moreover it is possible to resist cooling thermal impact, also help
In raising high temperature corrosion-resisting performance；
(3) Zr in the present invention is carbide, can react to be formed with the carbon in basis material prior to Cr
Carbide, Cr generates Cr because reacting with carbon in reduction system23C6And consume excessively, this can not only be reduced because of Cr2O3Content reduces
And keep oxidation film loose, and then the case where influence high temperature corrosion-resisting performance, moreover it is possible to avoid causing because of local chromium dilution as far as possible resistance to
The case where corrosion among crystalline grains decline.In addition, Zr will not easy to oxidize as Ti and nitridation therefore and be individually added into Ti phase
Than the addition of Zr may insure the fixation to carbon, to reduce the negative effect of carbon；
(4) corrosion resistance of the coating in Oxidant and reductant can be improved in the addition of Mo in the present invention；
(5) contain a large amount of Cr and Ni in the silk material prepared by the present invention, will form austenite group after being thermal sprayed into coating
It knits, nitrogen can form nitride with Ti, Si, B etc., these nitride are all very rigid, they can not only be pinned at Ovshinsky
Body grain boundaries improve the stability of austenite, and then improve hot-spraying coating to prevent growing up, deforming for austenite grain
High-temperature corrosion resistance performance, the wearability of coating can also be improved；
(6) rare earth element is free of in the present invention, it is at low cost.
Specific embodiment
Presently in connection with embodiment, the present invention is described in further detail.
Embodiment 1
A kind of high temperature resisting corrosion resisting hot spray wire, each component mass percent in the hot spray wire are as follows: Cr:
45%, Ti:3%, C:0.25%, Fe:0.38%, Mn:0.8%, Si:1%, remaining is Ni and impurity, wherein impurity are as follows: O:
0.02% hereinafter, P:0.05% hereinafter, S:0.01% or less.
The preparation method for the high temperature resisting corrosion resisting hot spray wire stated, specific steps are as follows:
(1) in the mixed atmosphere of ammonia and argon gas, each raw material component is weighed in proportion, according to Ni, Cr, Ti, activity member
The sequence melting of element and remaining component keeps the temperature 1-5h, then pours into alloy pig；
(2) alloy pig is heated to 1100-1200 DEG C, is forged into the blank of 50 × 50mm；
(3) by blank at 900 DEG C -1000 DEG C, argon gas protection is lower to carry out first time annealing；
(4) at 1100-1250 DEG C, blank is swaged into the silk material that diameter is 1.6-2mm on swager；
(5) oxide skin and rust on silk material surface are removed by pickling；
(6) under protection of argon gas by silk material, 1100 DEG C of progress, second of dehydrogenation processing.
Wherein, the volume ratio of ammonia and argon gas is 1:4 in step (1).
See Table 1 for details for each component and its parts by weight dosage of embodiment 1-6.
Table 1
The above Ni/Cr mass ratio is the calculated result when O, P, S are maximized.
See Table 2 for details for each component and its parts by weight dosage of comparative example 1-11.
Table 2
The above Ni/Cr mass ratio is the calculated result when O, P, S are maximized.
Comparative example 14 is substantially the same manner as Example 2, the difference is that, be in step (1) according to Ti, active element, Ni,
The sequence melting of Cr and remaining component.
Comparative example 15 is substantially the same manner as Example 2, the difference is that, be in step (1) according to Ti, Ni, active element,
The sequence melting of Cr and remaining component.
Comparative example 16 is substantially the same manner as Example 2, the difference is that, it is by all components melting simultaneously in step (1).
Comparative example 17, it is substantially the same manner as Example 2, the difference is that, it is not carried out in silk material preparation process step (6).
Table 3 is the mechanical property of hot spray wire prepared by embodiment 1-6 and comparative example 1-17.
Table 3
The hot spray wire prepared by embodiment 1-6 and comparative example 1-13 is in common 304 stainless steel surface of four main tubes of boiler
Prepares coating, table 4 are the properties of prepared coating.
Table 4
Wherein, heat and corrosion resistant performance is the test result at 1000 DEG C after 100h.
Taking the above-mentioned ideal embodiment according to the present invention as inspiration, through the above description, relevant staff is complete
Various changes and amendments can be carried out without departing from the scope of the technological thought of the present invention' entirely.The technology of this invention
Property range is not limited to the contents of the specification, it is necessary to which the technical scope thereof is determined according to the scope of the claim.
Claims (10)
1. a kind of high temperature resisting corrosion resisting hot spray wire, it is characterised in that: each component mass percent in the hot spray wire
Are as follows: Cr:45-49%, Ti:2-3%, C:0.05-0.3%, active element: 0.1-5%, remaining is Ni and impurity, wherein impurity
Are as follows: O:0.02% hereinafter, P:0.05% hereinafter, S:0.01% hereinafter, and meet Ni/Cr mass ratio be 0.9-1.1.
2. high temperature resisting corrosion resisting sprayed on material as described in claim 1, it is characterised in that: the active element be Fe, Mn,
One or more of Si, Zr, V, Mo, B.
3. high temperature resisting corrosion resisting hot spray wire as claimed in claim 2, it is characterised in that: each group in the hot spray wire
Divide mass percent are as follows: Cr:45-49%, Ti:2-3%, C:0.05-0.3%, Fe:0.1-0.5%, Mn:0.5-1%, Si:
0.5-1%, remaining be Ni and impurity, wherein impurity are as follows: O:0.02% hereinafter, P:0.05% hereinafter, S:0.01% hereinafter, simultaneously
Meeting Ni/Cr mass ratio is 0.9-1.1.
4. high temperature resisting corrosion resisting hot spray wire as claimed in claim 2, it is characterised in that: each group in the hot spray wire
Divide mass percent are as follows: Cr:45-49%, Ti:2-3%, C:0.05-0.3%, Si:0.5-1%, Zr:1-2%, remaining is Ni
And impurity, wherein impurity are as follows: O:0.02% hereinafter, P:0.05% hereinafter, S:0.01% hereinafter, and meeting Ni/Cr mass ratio
For 0.9-1.1.
5. high temperature resisting corrosion resisting hot spray wire as claimed in claim 2, it is characterised in that: each group in the hot spray wire
Divide mass percent are as follows: Cr:45-49%, Ti:2-3%, C:0.05-0.3%, Zr:1-2%, V:0.1-0.5%, B:1-2%,
Remaining be Ni and impurity, wherein impurity are as follows: O:0.02% hereinafter, P:0.05% hereinafter, S:0.01% hereinafter, and meeting Ni/Cr
Mass ratio is 0.9-1.1.
6. high temperature resisting corrosion resisting hot spray wire as claimed in claim 2, it is characterised in that: each group in the hot spray wire
Divide mass percent are as follows: Cr:45-49%, Ti:2-3%, C:0.05-0.3%, Zr:1-2%, Mo:0.1-0.5%, remaining is
Ni and impurity, wherein impurity are as follows: O:0.02% hereinafter, P:0.05% hereinafter, S:0.01% hereinafter, and meeting Ni/Cr mass ratio
Example is 0.9-1.1.
7. high temperature resisting corrosion resisting hot spray wire as claimed in claim 2, it is characterised in that: each group in the hot spray wire
Divide mass percent are as follows: Cr:45-49%, Ti:2-3%, C:0.05-0.3%, Si:0.1-0.5%, Zr:1-2%, B:1-
2%, remaining be Ni and impurity, wherein impurity are as follows: O:0.02% hereinafter, P:0.05% hereinafter, S:0.01% hereinafter, and meeting
Ni/Cr mass ratio is 0.9-1.1.
8. high temperature resisting corrosion resisting hot spray wire as claimed in claim 2, it is characterised in that: each group in the hot spray wire
Divide mass percent are as follows: Cr:45-49%, Ti:2-3%, C:0.05-0.3%, Si:0.1-0.8%, Zr:1-2%, Mo:0.1-
0.5%, B:0.1-0.5%, remaining be Ni and impurity, wherein impurity are as follows: O:0.02% hereinafter, P:0.05% hereinafter, S:
0.01% hereinafter, and meeting Ni/Cr mass ratio is 0.9-1.1.
9. such as the preparation method of the described in any item high temperature resisting corrosion resisting hot spray wires of claim 1-8, it is characterised in that: tool
Body step are as follows:
(1) in the mixed atmosphere of ammonia and argon gas, weigh each raw material component in proportion, according to Ni, Cr, Ti, active element and
The sequence melting of remaining component keeps the temperature 1-5h, then pours into alloy pig；
(2) alloy pig is heated to 1100-1200 DEG C, is forged into the blank of 50 × 50mm；
(3) by blank at 900 DEG C -1000 DEG C, argon gas protection is lower to carry out first time annealing；
(4) at 1100-1250 DEG C, blank is swaged into the silk material that diameter is 1.6-2mm on swager；
(5) oxide skin and rust on silk material surface are removed by pickling；
(6) under protection of argon gas by silk material, 1100 DEG C of progress, second of dehydrogenation processing.
10. the preparation method of high temperature resisting corrosion resisting hot spray wire as claimed in claim 9, it is characterised in that: the step
(1) volume ratio of ammonia and argon gas is 1:4-8 in the mixed atmosphere of ammonia and argon gas in.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112030041A (en) * | 2020-09-07 | 2020-12-04 | 沈阳金纳新材料股份有限公司 | MonelK500A alloy with corrosion resistance in oxygen-containing hydrofluoric acid |
| CN112048642A (en) * | 2020-08-25 | 2020-12-08 | 上海繁威能源工程有限公司 | High-temperature chlorine corrosion resistant alloy material and application method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112048642A (en) * | 2020-08-25 | 2020-12-08 | 上海繁威能源工程有限公司 | High-temperature chlorine corrosion resistant alloy material and application method thereof |
| CN112030041A (en) * | 2020-09-07 | 2020-12-04 | 沈阳金纳新材料股份有限公司 | MonelK500A alloy with corrosion resistance in oxygen-containing hydrofluoric acid |
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| CN109022926B (en) | 2020-02-21 |
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