CN104046954B - Method for improving liquid metal corrosion resistance of martensitic heat-resistant steel - Google Patents
Method for improving liquid metal corrosion resistance of martensitic heat-resistant steel Download PDFInfo
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 35
- 239000010959 steel Substances 0.000 title claims abstract description 35
- 229910000734 martensite Inorganic materials 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 title claims abstract description 33
- 230000007797 corrosion Effects 0.000 title claims abstract description 21
- 238000005260 corrosion Methods 0.000 title claims abstract description 21
- 229910001338 liquidmetal Inorganic materials 0.000 title claims abstract description 20
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 40
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 38
- 229910052751 metal Inorganic materials 0.000 claims abstract description 28
- 239000002184 metal Substances 0.000 claims abstract description 28
- 238000000576 coating method Methods 0.000 claims description 22
- 239000011159 matrix material Substances 0.000 claims description 22
- 239000004411 aluminium Substances 0.000 claims description 16
- 238000003475 lamination Methods 0.000 claims description 15
- 230000008018 melting Effects 0.000 claims description 15
- 229910052804 chromium Inorganic materials 0.000 claims description 14
- 239000011248 coating agent Substances 0.000 claims description 14
- 239000000126 substance Substances 0.000 claims description 13
- 239000000203 mixture Substances 0.000 claims description 12
- 238000005253 cladding Methods 0.000 claims description 11
- 238000004140 cleaning Methods 0.000 claims description 10
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 9
- 239000008367 deionised water Substances 0.000 claims description 8
- 229910021641 deionized water Inorganic materials 0.000 claims description 8
- 239000003599 detergent Substances 0.000 claims description 8
- 238000010309 melting process Methods 0.000 claims description 8
- 238000012360 testing method Methods 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 150000002500 ions Chemical class 0.000 claims description 7
- 238000002844 melting Methods 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 6
- 238000005270 abrasive blasting Methods 0.000 claims description 3
- 238000000151 deposition Methods 0.000 claims description 3
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 3
- 239000010931 gold Substances 0.000 claims description 3
- 229910052737 gold Inorganic materials 0.000 claims description 3
- 230000014759 maintenance of location Effects 0.000 claims description 3
- 230000001681 protective effect Effects 0.000 claims description 3
- 230000008021 deposition Effects 0.000 claims description 2
- 238000009713 electroplating Methods 0.000 claims description 2
- 239000000155 melt Substances 0.000 claims description 2
- 239000000758 substrate Substances 0.000 claims description 2
- 239000010410 layer Substances 0.000 claims 4
- 230000005611 electricity Effects 0.000 claims 1
- 239000002344 surface layer Substances 0.000 claims 1
- 239000007769 metal material Substances 0.000 abstract description 10
- 238000007733 ion plating Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 2
- 238000010891 electric arc Methods 0.000 abstract description 2
- 238000004372 laser cladding Methods 0.000 abstract description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 abstract 1
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 229910000909 Lead-bismuth eutectic Inorganic materials 0.000 description 15
- 239000007788 liquid Substances 0.000 description 14
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 12
- 230000000052 comparative effect Effects 0.000 description 12
- 238000005498 polishing Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 229910052748 manganese Inorganic materials 0.000 description 5
- 229910052720 vanadium Inorganic materials 0.000 description 5
- -1 iron ion Chemical class 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 229910052758 niobium Inorganic materials 0.000 description 4
- 229910052715 tantalum Inorganic materials 0.000 description 4
- 229910052721 tungsten Inorganic materials 0.000 description 4
- NUVIWMRYHSSRHP-UHFFFAOYSA-N bismuth;oxolead Chemical class [Bi].[Pb]=O NUVIWMRYHSSRHP-UHFFFAOYSA-N 0.000 description 3
- 238000009792 diffusion process Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 238000004381 surface treatment Methods 0.000 description 2
- 238000005269 aluminizing Methods 0.000 description 1
- 230000003064 anti-oxidating effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 210000004709 eyebrow Anatomy 0.000 description 1
- 210000000720 eyelash Anatomy 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 238000009377 nuclear transmutation Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000007712 rapid solidification Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
The invention aims to provide a method for carrying out liquid metal corrosion treatment on the surface of martensitic heat-resistant steel. The method comprises the following steps: after prearranging a layer of aluminum on a metal surface by virtue of electric arc ion plating, processing by using a laser cladding process, and controlling the surface aluminum activity to form compact and stable aluminum oxide. Therefore, the liquid metal corrosion resistance of metal is effectively improved, and the service life of the metal material is prolonged.
Description
Technical field
The invention belongs to field of metal surface treatment technology, especially provide a kind of metal surface is carried out with coating, laser melts
Cover the process of process.
Background technology
Becoming increasingly conspicuous with environmental and safety problems, and the petering out of traditional energy, the exploitation of novel energy is compeled
In the eyebrows and eyelashes.ADS transmuting system (Accelerator Driven Transmutation System) is the reason tackling above-mentioned challenge
Think one of selection, ADS transmuting system, with its efficient utilization nuke rubbish and high security of system, solves and governs nuclear power always
The nuclear waste disposal problem of sustainable development, is current most one of novel energy system of development prospect.Good because having
Thermophysical property and chemical property, liquid lead, liquid lead bismuth eutectic (lead-bismuth eutectic) are considered ADS transmuting
System spallation target and the preferred material of coolant.
9～12%Cr martensite heat-resistant steel has good mechanical behavior under high temperature, high thermal conductivity, low thermal coefficient of expansion
With low void swelling rate, it has also become the covering of the advanced nuclear reaction system such as ADS and involucrum candidate structure material.But ADS harshness
Working environment (high temperature, irradiation, liquid metal corrosion), proposes new choosing to 9～12%Cr martensite heat-resistant steel structural material
War, and the raising with equipment service temperature and the more stringent corrosive atmosphere facing, need further requirement to improve knot
The decay resistance of structure material.
ADS transmuting system 9～12%Cr martensite can further be improved by suitable surface modification technology resistance to
The decay resistance of hot steel.Research shows, the mass fraction of aluminum controls and can form one layer in liquid LBE 5%～20%
Fine and close aluminium oxide, suppression iron ion to external diffusion and oxonium ion to internal diffusion, thus protect the substrate metal is from liquid
Corrosion of metal.But because aluminum activity is high, if directly adding more than 5% Al in the base, easily generate the change of complicated aluminum
Compound, deteriorates mechanical property of metal etc..It would therefore be highly desirable to a kind of suitable surface treatment method, in the mechanics not affecting metal
Ensure while performance that the mass fraction of aluminum controls 5%～20%, to forming form compact and stable aluminium oxide, thus reaching guarantor
The purpose that shield metallic matrix corrodes from LBE.
Content of the invention
It is an object of the invention to provide a kind of side carrying out resistance to liquid metal corrosion process on martensite heat-resistant steel surface
Method, after arc ions are plated in the preset one layer of aluminum in metal surface, is lived using cladding laser surfaces technology controlling and process metal surface aluminum
Degree, to form form compact and stable aluminium oxide, hinders the inwardly or outwardly diffusion of ferrum and oxonium ion, thus effectively improving metal
Resistance to liquid metal corrosion performance, extends the service life of metal material.
The present invention specifically provide a kind of improve the resistance to liquid metal corrosion of martensite heat-resistant steel method it is characterised in that：
First in the preset aluminium lamination in martensite heat-resistant steel surface, then being processed by laser melting and coating process makes preset aluminium lamination and metallic matrix
Metallurgical binding, and control the mass fraction of aluminum between 5%～20%, in liquid metal, finally form continuously fine and close oxidation
Aluminum is protecting metallic matrix.
Of the present invention improve the resistance to liquid metal corrosion of martensite heat-resistant steel method it is characterised in that：The method is suitable for
In 9～12%Cr martensite heat-resistant steel.
Of the present invention improve the resistance to liquid metal corrosion of martensite heat-resistant steel method it is characterised in that：Described martensite
The chemical composition of heat resisting steel is：0 ＜ C ＜ 0.5%, 0 ＜ Si ＜ 3%, 8.5% ＜ Cr ＜ 13%, 0≤Mo ＜ 3%, 0≤W ＜
3%, 0% ＜ Mn ＜ 2.0%, 0 ＜ Ta+Nb ＜ 2.0%, 0% ＜ V ＜ 0.5%, balance of ferrum.
Of the present invention improve the resistance to liquid metal corrosion of martensite heat-resistant steel method it is characterised in that：Using electric arc from
Sub- electroplating method is in the preset aluminium lamination in martensite heat-resistant steel surface.
The method improving the resistance to liquid metal corrosion of martensite heat-resistant steel of the present invention is it is characterised in that include following walking
Suddenly：
(1), pretreatment is carried out to metal surface：Polished test button with abrasive paper for metallograph, and surface wet abrasive blasting carried out to it,
It is cleaned by ultrasonic in deionized water after metal detergent cleaning, dry；
(2), it is plated in the preset aluminium lamination in metal surface using arc ions, the purity of aluminum target is more than 99%：Arc ion plating
Process conditions：Vacuum degree in vacuum chamber is less than 8 × 10-3Pa, protective gas air pressure is maintained at 0.1-0.3Pa, and cavity temperature is
100-150 DEG C, bias -1000V- 800V, arc current is 50-60A, pre-sputter cleaning 3-5min keeps other parameters
Constant, bias is adjusted to 200- 250V, deposits one layer of aluminium lamination on metallic matrix；
(3), laser melting and coating process：Using laser beam energy by the aluminized coating melting sources being preset on metallic matrix,
So that metallic matrix top layer is melted, being formed with aluminum is the cladding coating of metallurgical binding, and in cladding layer, the quality of aluminum is divided simultaneously
Numerical control system is between 5%～20%；
(4), heat treatment：Metal after laser melting and coating process is processed is in 400 DEG C of ± 50 DEG C of vacuum heat, temperature retention time
For 2h ± 0.5h.
Of the present invention improve the resistance to liquid metal corrosion of martensite heat-resistant steel method it is characterised in that：In step (2)
On metallic matrix, the aluminum layer thickness of deposition is preferably 5～10 μm.
Beneficial effects of the present invention：
The present invention is plated in the preset aluminium lamination in martensite heat-resistant steel surface using arc ions, is then changed by laser melting coating surface
Property technique make to be preset at the aluminium lamination of metallic matrix and metallic matrix top layer forms the cladding layer of metallurgical binding, and aluminum in cladding layer
Mass fraction controls the aluminium oxide forming continuous-stable within the specific limits in LBE, thus protecting metallic matrix.Because molten
Coating is to be melted by preset aluminium lamination and metallic matrix simultaneously, and after rapid solidification formed dilution factor extremely low, and with matrix Cheng Ye
The face coat that gold combines, is greatly enhanced the adhesion strength between coating and metallic matrix, reduces coating and peels off with metallic matrix
Probability, significantly improve the performances such as the corrosion-resistant, antioxidation of metal material.Meanwhile, thin cladding layer does not interfere with gold
Belong to the mechanical property of matrix, prevented to add the deterioration of the metal material performance that certain aluminium content is brought in metallic matrix.Effectively
Ground improves the resistance to liquid metal corrosion performance of martensite heat-resistant steel, extends its service life.
Brief description
XRD after Fig. 1 is the preset aluminium lamination of embodiment 1 and after Laser Cladding Treatment.
Fig. 2 is the Cross Section Morphology after embodiment 1 laser melting coating heat treatment.
Fig. 3 corrodes the Cross Section Morphology of 500 hours for embodiment 1 in 600 DEG C of saturated oxygen lead bismuth eutectics.
Fig. 4 corrodes the Cross Section Morphology of 500 hours for comparative example 1 in 600 DEG C of saturated oxygen lead bismuth eutectics.
Fig. 5 corrodes the Cross Section Morphology of 500 hours for comparative example 2 in 600 DEG C of saturated oxygen lead bismuth eutectics.
Specific embodiment
Following examples will be described further to the present invention.
Embodiment 1
(1) pretreatment is carried out to metal surface：By the test button of 15mm × 10mm × 2mm size with abrasive paper for metallograph step by step
It is polishing to No. 800, and all corner angle sides are changed into fillet, carry out surface wet abrasive blasting with 200 mesh glass balls, clear through metal detergent
It is cleaned by ultrasonic in deionized water after washing, dry.
(2), it is plated in the preset aluminium lamination in metal surface using arc ions, the purity of aluminum target is more than 99%：Arc ion plating
Process conditions：Vacuum degree in vacuum chamber 9.5 × 10-3Pa, protective gas air pressure remains in 2Pa, and cavity temperature is 130 DEG C, bias
800V, arc current is 55A, pre-sputter cleaning 3min, keeps other parameters constant, bias is adjusted to 225V, in metallic matrix
Upper deposit thickness is 8 μm of aluminium lamination；
(3), laser melting and coating process：Using laser beam energy by the aluminized coating melting sources being preset on metallic matrix,
So that metallic matrix top layer is melted, being formed with aluminum is the cladding coating of metallurgical binding, and in cladding layer, the quality of aluminum is divided simultaneously
Number is 10～12%, and laser beam is mainly for technological parameter：Electric current 100A, pulsewidth：10ms, frequency：4Hz；
(4), rear heat treatment：Metal after laser melting and coating process is processed in 400 DEG C of vacuum heat, temperature retention time is
2h.
Above-mentioned metal material is martensite heat-resistant steel, and specific chemical composition is：C：0.25wt.%, Cr：10.8wt.%,
Si：1.43wt.%, Mn：0.54wt.%, W：1.2wt.%, Ta：0.11wt.%, V：0.19wt.%, Nb：0.014wt.%,
Balance of ferrum.
XRD after aluminizing and after laser melting coating heat treatment is shown in Fig. 1, and Fig. 2 is the Cross Section Morphology after laser melting coating heat treatment, figure
3 corrode the Cross Section Morphology of 500 hours for embodiment 1 in 600 DEG C of liquid lead bismuth eutectics, and its mechanical property does not change substantially.
Embodiment 2
The chemical composition of 9～12%Cr martensite heat-resistant steel is：C：0.1wt.%, Cr：9.04wt.%, Si：
0.26wt.%, Mn：0.46wt.%, Mo：0.92wt.%, Ni：0.17wt.%, V：0.2wt.%, Nb：0.04wt.%, surplus
For ferrum.This metallic surface handling process is same as Example 1.Section after corroding 500 hours in 600 DEG C of liquid lead bismuth eutectics
Pattern is more or less the same with embodiment 1, and its mechanical property does not change substantially.
Embodiment 3
The chemical composition of 9～12%Cr martensite heat-resistant steel is：C：0.22wt.%, Cr：10.73wt.%, Si：
1.56wt.%, Mn：0.67wt.%, W：1.41wt.%, Ta：0.19wt.%, V：0.21wt.%, Nb：0.01wt.%, surplus
For ferrum.This metallic surface handling process is same as Example 1.Section after corroding 500 hours in 600 DEG C of liquid lead bismuth eutectics
Pattern is more or less the same with embodiment 1, and its mechanical property does not change substantially.
Embodiment 4
The chemical composition of 9～12%Cr martensite heat-resistant steel is：C：0.23wt.%, Cr：9.93wt.%, Si：
1.3wt.%, Mn：1.09wt.%, W：1.16wt.%, Ta：0.1wt.%, V：0.2wt.%, Nb：0.01wt.%, balance of
Ferrum.This metallic surface handling process is same as Example 1.Section shape after corroding 500 hours in 600 DEG C of liquid lead bismuth eutectics
Looks are more or less the same with embodiment 1, and its mechanical property does not change substantially.
Embodiment 5
The chemical composition of 9～12%Cr martensite heat-resistant steel is：C：0.32wt.%, Si：1.4wt.%, Cr：
11.2wt.%, Mn：0.53wt.%, W：1.43wt.%, Ta：0.15wt.%, V：0.2wt.%, Ni：0.09wt.%, surplus
For ferrum.This metallic surface handling process is same as Example 1.Section after corroding 500 hours in 600 DEG C of liquid lead bismuth eutectics
Pattern is more or less the same with embodiment 1, and its mechanical property does not change substantially.
Comparative example 1
The test button abrasive paper for metallograph of 15mm × 10mm × 2mm size is polishing to No. 2000 step by step, and by all ribs
The arm of angle changes into fillet, through metal detergent cleaning after be cleaned by ultrasonic in deionized water, dry, the chemical composition of metal material with
Embodiment 1 is identical.Fig. 4 corrodes the Cross Section Morphology of 500 hours for comparative example 1 in 600 DEG C of liquid lead bismuth eutectics.
Comparative example 2
The test button abrasive paper for metallograph of 15mm × 10mm × 2mm size is polishing to No. 2000 step by step, and by all ribs
The arm of angle changes into fillet, through metal detergent cleaning after be cleaned by ultrasonic in deionized water, dry, the chemical composition of metal material with
Embodiment 2 is identical.Fig. 5 corrodes the Cross Section Morphology of 500 hours for comparative example 2 in 600 DEG C of liquid lead bismuth eutectics.
Comparative example 3
The test button abrasive paper for metallograph of 15mm × 10mm × 2mm size is polishing to No. 2000 step by step, and by all ribs
The arm of angle changes into fillet, through metal detergent cleaning after be cleaned by ultrasonic in deionized water, dry, the chemical composition of metal material with
Embodiment 3 is identical.Corrode 500 hours Cross Section Morphologies to be more or less the same with comparative example 1 in 600 DEG C of liquid lead bismuth eutectics.
Comparative example 4
The test button abrasive paper for metallograph of 15mm × 10mm × 2mm size is polishing to No. 2000 step by step, and by all ribs
The arm of angle changes into fillet, through metal detergent cleaning after be cleaned by ultrasonic in deionized water, dry, the chemical composition of metal material with
Embodiment 4 is identical.Corrode 500 hours Cross Section Morphologies to be more or less the same with comparative example 1 in 600 DEG C of liquid lead bismuth eutectics.
Comparative example 5
The test button abrasive paper for metallograph of 15mm × 10mm × 2mm size is polishing to No. 2000 step by step, and by all ribs
The arm of angle changes into fillet, through metal detergent cleaning after be cleaned by ultrasonic in deionized water, dry, the chemical composition of metal material with
Embodiment 5 is identical.Corrode 500 hours Cross Section Morphologies to be more or less the same with comparative example 1 in 600 DEG C of liquid lead bismuth eutectics.
Above-described embodiment only technology design to illustrate the invention and feature, its object is to allow person skilled in the art
Scholar will appreciate that present disclosure and implements according to this, can not be limited the scope of the invention with this.All according to the present invention
Equivalence changes or modification that spirit is made, all should be included within the scope of the present invention.
Claims (5)
1. a kind of improve the resistance to liquid metal corrosion of martensite heat-resistant steel method it is characterised in that：First in martensite heat-resistant steel
The preset aluminium lamination in surface, then so that martensite heat-resistant steel surface is formed with aluminum using laser melting and coating process is the cladding of metallurgical binding
Layer, and in cladding layer, the mass fraction of aluminum controls between 5%～20%；Described martensite heat-resistant steel is 9～12%Cr geneva
Body heat resisting steel.
2. according to improving the method for the resistance to liquid metal corrosion of martensite heat-resistant steel described in claim 1 it is characterised in that described horse
The chemical composition of family name's body heat resisting steel is：0 ＜ C ＜ 0.5%, 0 ＜ Si ＜ 3%, 9% ＜ Cr ＜ 12%, 0≤Mo ＜ 3%, 0≤W ＜
3%, 0% ＜ Mn ＜ 2.0%, 0 ＜ Ta+Nb ＜ 2.0%, 0% ＜ V ＜ 0.5%, balance of ferrum.
3. according to described in claim 1 improve the resistance to liquid metal corrosion of martensite heat-resistant steel method it is characterised in that：Using electricity
Arc ion electroplating method is in the preset aluminium lamination in martensite heat-resistant steel surface.
4. according to described in claim 1 improve the resistance to liquid metal corrosion of martensite heat-resistant steel method it is characterised in that include with
Lower step：
(1), pretreatment is carried out to metal surface：Polished test button with abrasive paper for metallograph, and surface wet abrasive blasting is carried out to it, through gold
It is cleaned by ultrasonic in deionized water after belonging to detergent cleaning, dry；
(2), it is plated in the preset aluminium lamination in metal surface using arc ions, the purity of aluminum target is more than 99%：Arc ions depositing process
Condition：Vacuum degree in vacuum chamber is less than 8 × 10-3Pa, protective gas air pressure is maintained at 0.1-0.3Pa, and cavity temperature is 100-150
DEG C, bias -1000V- 800V, arc current is 50-60A, pre-sputter cleaning 3-5min, keep other parameters constant, partially
Pressure is adjusted to 200- 250V, deposits one layer of aluminium lamination on metallic matrix；
(3), laser melting and coating process：Using laser by the aluminized coating melting sources being preset on metallic matrix, make Metal Substrate simultaneously
Surface layer melts, and being formed with aluminum is the cladding coating of metallurgical binding；
(4), heat treatment：In 400 DEG C of ± 50 DEG C of vacuum heat, temperature retention time is 2h to metal after laser melting and coating process is processed
±0.5h.
5. according to described in claim 4 improve the resistance to liquid metal corrosion of martensite heat-resistant steel method it is characterised in that：Step
(2) in, on metallic matrix, the aluminum layer thickness of deposition is 5～10 μm.
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| CN108774729A (en) * | 2018-06-29 | 2018-11-09 | 南京先进激光技术研究院 | Duplex coating single pass forming method based on laser melting and coating technique |
| CN109161869A (en) * | 2018-09-12 | 2019-01-08 | 云南科威液态金属谷研发有限公司 | A method of corrosion-inhibiting coating is formed in metal part surface |
| CN112144008B (en) * | 2020-08-14 | 2021-10-22 | 中国科学院金属研究所 | Method for improving high-temperature-resistant liquid metal corrosion resistance of oxide dispersion strengthened steel through pre-oxidation |
| CN114717511B (en) * | 2022-03-30 | 2023-08-04 | 北矿磁材（阜阳）有限公司 | Preparation method of Al film on surface of sintered NdFeB magnet |
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| CN102115882A (en) * | 2010-01-05 | 2011-07-06 | 上海工程技术大学 | Method for cladding alloy on surface of metallic matrix |
| CN103114267B (en) * | 2013-02-06 | 2015-01-07 | 中国科学院合肥物质科学研究院 | Preparation method of steel substrate surface aluminum oxide coat |
| CN103572201B (en) * | 2013-11-18 | 2015-07-29 | 中国原子能科学研究院 | Low activation ferrite-martensite steel surface powder pack cementation aluminizing and aftertreatment technology |
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