CN106244976A - Heat spraying method is used to prepare the method that Metal Substrate Graphene strengthens composite - Google Patents
Heat spraying method is used to prepare the method that Metal Substrate Graphene strengthens composite Download PDFInfo
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- CN106244976A CN106244976A CN201610826720.2A CN201610826720A CN106244976A CN 106244976 A CN106244976 A CN 106244976A CN 201610826720 A CN201610826720 A CN 201610826720A CN 106244976 A CN106244976 A CN 106244976A
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- powder
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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
Abstract
The invention discloses and use heat spraying method to prepare the method that Metal Substrate Graphene strengthens composite, comprise the steps: that a) blast cleaning matrix surface is remaining；B) thermal jet working lining utilizes Metal Substrate graphene thermal to spray combined wire, and matrix surface is carried out thermal spraying；Wherein, Metal Substrate graphene thermal spraying combined wire is made up of tubular wrapper material and filler powder；Tubular wrapper material is mild steel or low-alloy steel, and filler powder is Fe base graphene powder, ceramic particle, B, Cr, Ni, refractory metal, nanoscale Al2O3The mixture of powder, each weight ratio of constituents is Fe base graphene powder: ceramic particle: B:Cr:Ni: refractory metal: nanoscale Al2O3Powder=40 85:1 10:5.1 7.5:2 20:1 4:1 5:5 20, in Fe base graphene powder, the mass ratio of Fe Yu C is 40 80:2.6 3.5.
Description
Technical field
The invention belongs to thermal spray process technical field, be specifically related to use heat spraying method to prepare Metal Substrate Graphene and increase
The method of strong composite.
Background technology
Graphene is a kind of new material with unique physico-chemical characteristic.This material is the thinnest the hardest
One of material.Have excellent electric property (energy gap approximates 0, and carrier mobility reaches 2 × 105cm simultaneously2·
V-1 s-1), remarkable mechanical property (Young's modulus is 1100GPa, and fracture strength is 125GPa) and good calorifics
Performance (thermal conductivity is about 5000W m-1 K-1, and thermal coefficient of expansion is extremely low).Since self-discovery, Graphene is by extensively
It is used for preparing various new material, particularly functional composite material.
The research starting that Graphene strengthens structural composite material is late, currently mainly concentrates on and prepares Graphene REINFORCED Al base,
Ni base, Cu based composites.In blocky graphite alkene strengthens metal-base composites, Graphene is distributed on crystal boundary, refinement crystalline substance
Grain, improves yield strength and the effect of hardness of material.The preparation process very complicated of these materials, manufacturing cost occupies height not
Under, it is difficult to realizing scale volume production, they are the most all confined to the application of particular/special requirement.
The characteristic being had due to Graphene, is suitable for needing wearing layer to realize abrasionproof purpose application various.Special
It it not the modification application of the contact surface having sliding frictional wear or rolling friction abrasion.
Summary of the invention
It is an object of the invention to provide and a kind of use heat spraying method to prepare Metal Substrate Graphene to strengthen composite
Method, the method can coat out few layer graphene at matrix surface and strengthen layer, thus the surface substantially increasing matrix is hard
Degree and anti-wear performance.
The present invention uses following scheme to solve above-mentioned technical problem: uses heat spraying method to prepare Metal Substrate Graphene and strengthens
The method of composite, it is characterised in that comprise the steps:
A) residual substance of matrix surface is removed in sandblasting by polishing mode, makes matrix surface coarse, improves matrix and spray
It is coated with the bond strength of interlayer；
B) thermal jet working lining uses thermal spraying spray gun and Metal Substrate graphene thermal spraying combined wire, to described matrix surface
Carrying out thermal spraying, make described matrix surface generate few layer iron-based Graphene and strengthen composite coating, this coating surface includes uniformly
Few layer graphene crystal grain thinning of distribution；
Wherein, described Metal Substrate graphene thermal spraying combined wire is by tubular wrapper material and filling filler powder therein
Composition；Described tubular wrapper material is mild steel or low-alloy steel, and described filler powder is Fe base graphene powder, pottery
Grain, B, Cr, Ni, refractory metal, nanoscale Al2O3The mixture of powder, the weight ratio of its each composition is Fe base graphene powder:
Ceramic particle: B:Cr:Ni: refractory metal: nanoscale Al2O3Powder=40-85:1-10:5.1-7.5:2-20:1-4:1-5:5-
20, wherein, in described Fe base graphene powder, the mass ratio of Fe Yu C is 40-80:2.6-3.5.
Optimizing, described ceramic particle comprises SiC, B4C、BN、SiO2、TiC、Al2O3Composition.
Optimizing, described refractory metal is at least one in V, Nb, Ta, Mo, W.
Optimizing, use ultrasonic electric arc spray device to carry out operation construction, its running voltage is 18-40V, operating current
For 180-500A, spray coating operations distance is 200-800mm, and compressed air pressure is 0.4-1.0MPa.
Optimizing, described Metal Substrate graphene thermal spraying combined wire is prepared from by following steps:
A) choosing the graphite powder that particle diameter is 100-500nm is the iron powder of 53-96um with particle diameter, according to weight ratio 1:8-20
Ratio is weighed respectively；
B) above-mentioned graphite powder and iron powder being put in drying baker and be dried, 100 150 DEG C are incubated 0.5 2.0 hours；
C) graphite powder and the iron powder that are dried in stepb are quickly proceeded in mechanical mixture container, start mechanical mixture and hold
Device pivots, and makes described graphite powder and iron powder mutually collide combination, and the velocity of rotation of described mechanical mixture container is 10
120rpm, mixing time is 2-12 hour；
D) after having stirred, the said mixture diagrid of 270 mesh is sieved, retain without 270 mesh sieve holes
Powder, is described iron-based graphene powder；
E) by the iron-based graphene powder obtained in step d and described ceramic particle, B, Cr, Ni, refractory metal, nanoscale
Al2O3Powder mixes according to the above ratio, dries, places into mechanical mixture container mix homogeneously, obtain filler powder, then by filler
Powder is filled to described tubular wrapper material, i.e. obtains described Metal Substrate graphene thermal spraying combined wire；
Wherein, described mechanical mixture container includes that cylindrical shape rustless steel container tank, level fix axle and driving level is solid
The driving means of System of Rotating about Fixed Axis；Described container tank two ends are provided with the valve inserted for powder and take out, and described container tank is solid
The level of being scheduled on is fixed on axle, and shaft core is fixed axle and become 15 ° of-45 ° of angles with level, and described container tank fixes axle as axle center with level
Rotate；The diameter of described container tank and aspect ratio are 1:1-3.
It is an advantage of the current invention that: the present invention uses a kind of iron-based Graphene combined wire, by heat spraying method, at base
Surface generates few layer graphene and strengthens iron-based composite coating, thus improves case hardness and the anti-wear performance of matrix；This ferrum
Base Graphene combined wire contains can improve base material-thermally sprayed coating interface bond strength and the composition of sealing of hole, accordingly, with respect to biography
The hot-spraying technique of system, the operation sequence of the present invention more simplifies, and substantially increases work efficiency and coating quality；The present invention's
Solder wire material preparation technology is easy, with low cost, is suitable for the extensive application of large-scale production manufacture, beneficially grapheme material.
Accompanying drawing explanation
Fig. 1 is the process chart of iron-based Graphene composite solder in the embodiment of the present invention；
Fig. 2 is mechanical mixture container mechanical mixture process schematic in the embodiment of the present invention.
Detailed description of the invention
Embodiment 1
Heat spraying method is used to prepare the method that Metal Substrate Graphene strengthens composite, it is characterised in that to include as follows
Step:
A) residual substance of matrix surface is removed in sandblasting by polishing mode, makes matrix surface coarse, improves matrix and spray
It is coated with the bond strength of interlayer；
B) thermal jet working lining uses thermal spraying spray gun and Metal Substrate graphene thermal spraying combined wire, to described matrix surface
Carrying out thermal spraying, make described matrix surface generate few layer iron-based Graphene and strengthen composite coating, this coating surface includes uniformly
Few layer graphene crystal grain thinning of distribution；
Wherein, described Metal Substrate graphene thermal spraying combined wire is by tubular wrapper material and filling filler powder therein
Composition；Described tubular wrapper material is mild steel or low-alloy steel, and described filler powder is Fe base graphene powder, pottery
Grain, B, Cr, Ni, Ta, nanoscale Al2O3The mixture of powder, the weight ratio of its each composition is Fe base graphene powder: pottery
Grain: B:Cr:Ni:Ta: nanoscale Al2O3Powder=60:7:5.1:10:1:2:14.9, wherein, in described Fe base graphene powder
The mass ratio of Fe Yu C is 57:3.
Described ceramic particle comprises SiC, B4C、BN、SiO2、TiC、Al2O3Composition.
Using ultrasonic electric arc spray device to carry out operation construction, its running voltage is 18-40V, and operating current is 180-
500A, spray coating operations distance is 200-800mm, and compressed air pressure is 0.4-1.0MPa.
Described Metal Substrate graphene thermal spraying combined wire is prepared from by following steps:
A) choose the graphite powder that particle diameter is 100-500nm and the iron powder that particle diameter is 53um (270 mesh)-96um (160 mesh), press
Ratio according to weight ratio 1:16 is weighed respectively；
B) above-mentioned graphite powder and iron powder being put in drying baker and be dried, 130 DEG C are incubated 1 hour；
C) graphite powder and the iron powder that are dried in stepb are quickly proceeded in mechanical mixture container, start mechanical mixture and hold
Device pivots, and makes described graphite powder and iron powder mutually collide combination, and the velocity of rotation of described mechanical mixture container is 90rpm,
Incorporation time is 10 hours；
D) after having mixed, the said mixture diagrid of 270 mesh is sieved, retain without 270 mesh sieve holes
Powder, is described iron-based graphene powder；
E) by the iron-based graphene powder obtained in step d and described ceramic particle, B, Cr, Ni, Ta, nanoscale Al2O3Powder
End mixes according to the above ratio, dries, places into mechanical mixture container mix homogeneously, obtain filler powder, then filler powder filled out
It is charged in described tubular wrapper material, i.e. obtains described Metal Substrate graphene thermal spraying combined wire；
Wherein, described mechanical mixture container includes that cylindrical shape rustless steel container tank, level fix axle and driving level is solid
The driving means of System of Rotating about Fixed Axis；Described container tank two ends are provided with the valve inserted for powder and take out, and described container tank is solid
The level of being scheduled on is fixed on axle, and shaft core is fixed axle and become 35 ° of angles with level, and described container tank is fixed axle with level and carried out for axle center
Rotate (as shown in Figure 2)；The diameter of described container tank and aspect ratio are 1:1.5.
The present invention uses a kind of iron-based Graphene combined wire, by heat spraying method, generates few layer stone at matrix surface
Ink alkene strengthens iron-based composite coating, thus improves case hardness and the anti-wear performance of matrix；This iron-based Graphene combined wire
Containing base material-thermally sprayed coating interface bond strength and the composition of sealing of hole can be improved, accordingly, with respect to traditional hot-spraying technique,
The operating process of the present invention eliminates thermal jet prime coat and application hole sealing agent two procedures, and operation more more simplifies, and significantly carries
High work efficiency and coating quality；The solder wire material preparation technology of the present invention is easy, with low cost, is suitable for large-scale production system
Make, beneficially the extensive application of grapheme material.
Embodiment 2
Heat spraying method is used to prepare the method that Metal Substrate Graphene strengthens composite, it is characterised in that to include as follows
Step:
A) residual substance of matrix surface is removed in sandblasting by polishing mode, makes matrix surface coarse, improves matrix and spray
It is coated with the bond strength of interlayer；
B) thermal jet working lining uses thermal spraying spray gun and Metal Substrate graphene thermal spraying combined wire, to described matrix surface
Carrying out thermal spraying, make described matrix surface generate few layer iron-based Graphene and strengthen composite coating, this coating surface includes uniformly
Few layer graphene crystal grain thinning of distribution；
Wherein, described Metal Substrate graphene thermal spraying combined wire is by tubular wrapper material and filling filler powder therein
Composition；Described tubular wrapper material is mild steel or low-alloy steel, and described filler powder is Fe base graphene powder, pottery
Grain, B, Cr, Ni, Nb, nanoscale Al2O3The mixture of powder, the weight ratio of its each composition is Fe base graphene powder: pottery
Grain: B:Cr:Ni:Nb: nanoscale Al2O3Powder=70:5:7.5:7:1:2:7.5, wherein, Fe in described Fe base graphene powder
It is 67.2:2.8 with the mass ratio of C.
Described ceramic particle comprises SiC, B4C、BN、SiO2、TiC、Al2O3Composition.
Using ultrasonic electric arc spray device to carry out operation construction, its running voltage is 18-40V, and operating current is 180-
500A, spray coating operations distance is 200-800mm, and compressed air pressure is 0.4-1.0MPa.
Described Metal Substrate graphene thermal spraying combined wire is prepared from by following steps:
A) choose the graphite powder that particle diameter is 100-500nm and the iron powder that particle diameter is 53um (270 mesh)-96um (160 mesh), press
Ratio according to weight ratio 1:18 is weighed respectively；
B) above-mentioned graphite powder and iron powder being put in drying baker and be dried, 110 DEG C are incubated 1.2 hours；
C) graphite powder and the iron powder that are dried in stepb are quickly proceeded in mechanical mixture container, start mechanical mixture and hold
Device pivots, and makes described graphite powder and iron powder mutually collide combination, and the velocity of rotation of described mechanical mixture container is 100rpm,
Incorporation time is 6 hours；
D) after having mixed, the said mixture diagrid of 270 mesh is sieved, retain without 270 mesh sieve holes
Powder, is described iron-based graphene powder；
E) by the iron-based graphene powder obtained in step d and described ceramic particle, B, Cr, Ni, Nb, nanoscale Al2O3Powder
End mixes according to the above ratio, dries, places into mechanical mixture container mix homogeneously, obtain filler powder, then filler powder filled out
It is charged in described tubular wrapper material, i.e. obtains described Metal Substrate graphene thermal spraying combined wire；
Wherein, described mechanical mixture container includes that cylindrical shape rustless steel container tank, level fix axle and driving level is solid
The driving means of System of Rotating about Fixed Axis；Described container tank two ends are provided with the valve inserted for powder and take out, and described container tank is solid
The level of being scheduled on is fixed on axle, and shaft core is fixed axle and become 40 ° of angles with level, and described container tank is fixed axle with level and carried out for axle center
Rotate (as shown in Figure 2)；The diameter of described container tank and aspect ratio are 1:2.
Embodiment 3
Heat spraying method is used to prepare the method that Metal Substrate Graphene strengthens composite, it is characterised in that to include as follows
Step:
A) residual substance of matrix surface is removed in sandblasting by polishing mode, makes matrix surface coarse, improves matrix and spray
It is coated with the bond strength of interlayer；
B) thermal jet working lining uses thermal spraying spray gun and Metal Substrate graphene thermal spraying combined wire, to described matrix surface
Carrying out thermal spraying, make described matrix surface generate few layer iron-based Graphene and strengthen composite coating, this coating surface includes uniformly
Few layer graphene crystal grain thinning of distribution；
Wherein, described Metal Substrate graphene thermal spraying combined wire is by tubular wrapper material and filling filler powder therein
Composition；Described tubular wrapper material is mild steel or low-alloy steel, and described filler powder is Fe base graphene powder, pottery
Grain, B, Cr, Ni, Mo, nanoscale Al2O3The mixture of powder, the weight ratio of its each composition is Fe base graphene powder: pottery
Grain: B:Cr:Ni:Mo: nanoscale Al2O3Powder=74:5:6:5:1:1:8, wherein, Fe Yu C in described Fe base graphene powder
Mass ratio is 70.5:3.5.
Described ceramic particle comprises SiC, B4C、BN、SiO2、TiC、Al2O3Composition.
Using ultrasonic electric arc spray device to carry out operation construction, its running voltage is 18-40V, and operating current is 180-
500A, spray coating operations distance is 200-800mm, and compressed air pressure is 0.4-1.0MPa.
Described Metal Substrate graphene thermal spraying combined wire is prepared from by following steps:
A) choose the graphite powder that particle diameter is 100-500nm and the iron powder that particle diameter is 53um (270 mesh)-96um (160 mesh), press
Ratio according to weight ratio 1:18 is weighed respectively；
B) above-mentioned graphite powder and iron powder being put in drying baker and be dried, 120 DEG C are incubated 0.5 hour；
C) graphite powder and the iron powder that are dried in stepb are quickly proceeded in mechanical mixture container, start mechanical mixture and hold
Device pivots, and makes described graphite powder and iron powder mutually collide combination, and the velocity of rotation of described mechanical mixture container is 120rpm,
Incorporation time is 3 hours；
D) after having mixed, the said mixture diagrid of 270 mesh is sieved, retain without 270 mesh sieve holes
Powder, is described iron-based graphene powder；
E) by the iron-based graphene powder obtained in step d and described ceramic particle, B, Cr, Ni, Mo, nanoscale Al2O3Powder
End mixes according to the above ratio, dries, places into mechanical mixture container mix homogeneously, obtain filler powder, then filler powder filled out
It is charged in described tubular wrapper material, i.e. obtains described Metal Substrate graphene thermal spraying combined wire；
Wherein, described mechanical mixture container includes that cylindrical shape rustless steel container tank, level fix axle and driving level is solid
The driving means of System of Rotating about Fixed Axis；Described container tank two ends are provided with the valve inserted for powder and take out, and described container tank is solid
The level of being scheduled on is fixed on axle, and shaft core is fixed axle and become 20 ° of angles with level, and described container tank is fixed axle with level and carried out for axle center
Rotate (as shown in Figure 2)；The diameter of described container tank and aspect ratio are 1:2.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all essences in the present invention
Any amendment, equivalent and the improvement etc. made within god and principle, should be included within the scope of the present invention.
Claims (5)
1. use heat spraying method to prepare the method that Metal Substrate Graphene strengthens composite, it is characterised in that to include walking as follows
Rapid:
A) residual substance of matrix surface is removed in sandblasting by polishing mode, makes matrix surface coarse, improves matrix and sprayed coating
Between bond strength；
B) thermal jet working lining uses thermal spraying spray gun and Metal Substrate graphene thermal spraying combined wire, carries out described matrix surface
Thermal spraying, makes described matrix surface generate few layer iron-based Graphene and strengthens composite coating, and this coating surface includes and is uniformly distributed
Few layer graphene crystal grain thinning；
Wherein, described Metal Substrate graphene thermal spraying combined wire is by tubular wrapper material and filling filler powder therein group
Become；Described tubular wrapper material is mild steel or low-alloy steel, described filler powder be Fe base graphene powder, ceramic particle,
B, Cr, Ni, refractory metal, nanoscale Al2O3The mixture of powder, the weight ratio of its each composition is Fe base graphene powder: pottery
Granule: B:Cr:Ni: refractory metal: nanoscale Al2O3Powder=40-85:1-10:5.1-7.5:2-20:1-4:1-5:5-20, its
In, in described Fe base graphene powder, the mass ratio of Fe Yu C is 40-80:2.6-3.5.
2. the method using heat spraying method to prepare Metal Substrate Graphene enhancing composite as claimed in claim 1, it is special
Levying and be, described ceramic particle comprises SiC, B4C、BN、SiO2、TiC、Al2O3Composition.
3. the method using heat spraying method to prepare Metal Substrate Graphene enhancing composite as claimed in claim 1, it is special
Levying and be, described refractory metal is at least one in V, Nb, Ta, Mo, W.
4. the method using heat spraying method to prepare Metal Substrate Graphene enhancing composite as claimed in claim 1, it is special
Levying and be, use ultrasonic electric arc spray device to carry out operation construction, its running voltage is 18-40V, and operating current is 180-
500A, spray coating operations distance is 200-800mm, and compressed air pressure is 0.4-1.0MPa.
5. the method using heat spraying method to prepare Metal Substrate Graphene enhancing composite as claimed in claim 1, it is special
Levying and be, described Metal Substrate graphene thermal spraying combined wire is prepared from by following steps:
A) choosing the graphite powder that particle diameter is 100-500nm is the iron powder of 53-96um with particle diameter, according to the ratio of weight ratio 1:8-20
Weigh respectively；
B) above-mentioned graphite powder and iron powder being put in drying baker and be dried, 100 150 DEG C are incubated 0.5 2.0 hours；
C) by stepb be dried graphite powder and iron powder quickly proceed in mechanical mixture container, start mechanical mixture container around
Axle rotates, and makes described graphite powder and iron powder mutually collide combination, and the velocity of rotation of described mechanical mixture container is 10 120rpm,
Mixing time is 2-12 hour；
D) after having stirred, the said mixture diagrid of 270 mesh is sieved, retains the powder without 270 mesh sieve holes,
It is described iron-based graphene powder；
E) by the iron-based graphene powder obtained in step d and described ceramic particle, B, Cr, Ni, refractory metal, nanoscale Al2O3
Powder mixes according to the above ratio, dries, places into mechanical mixture container mix homogeneously, obtain filler powder, then by filler powder
Fill to described tubular wrapper material, i.e. obtain described Metal Substrate graphene thermal spraying combined wire；
Wherein, described mechanical mixture container includes that cylindrical shape rustless steel container tank, level fix axle and driving level fixes axle
The driving means rotated；Described container tank two ends are provided with the valve inserted for powder and take out, and described container tank is fixed on
Level is fixed on axle, and shaft core is fixed axle and become 15 ° of-45 ° of angles with level, and described container tank is fixed axle with level and carried out for axle center
Rotate；The diameter of described container tank and aspect ratio are 1:1-3.
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| CN201610826720.2A CN106244976A (en) | 2016-09-18 | 2016-09-18 | Heat spraying method is used to prepare the method that Metal Substrate Graphene strengthens composite |
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| CN201610826720.2A CN106244976A (en) | 2016-09-18 | 2016-09-18 | Heat spraying method is used to prepare the method that Metal Substrate Graphene strengthens composite |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108034916A (en) * | 2017-12-11 | 2018-05-15 | 马鞍山蓝科再制造技术有限公司 | A kind of electric arc spraying dusty material |
| CN111139424A (en) * | 2019-12-31 | 2020-05-12 | 陕西斯瑞新材料股份有限公司 | Stainless steel wet hydrogen preparation method for improving thermal emissivity and application |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120077017A1 (en) * | 2009-06-03 | 2012-03-29 | Isabell Buresch | Process for producing a metal matrix composite material |
| CN104419889A (en) * | 2013-09-04 | 2015-03-18 | 天津大学 | Pore-sealing method for thermal spray coating by virtue of nanometer aluminum oxide and application of method |
-
2016
- 2016-09-18 CN CN201610826720.2A patent/CN106244976A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120077017A1 (en) * | 2009-06-03 | 2012-03-29 | Isabell Buresch | Process for producing a metal matrix composite material |
| CN104419889A (en) * | 2013-09-04 | 2015-03-18 | 天津大学 | Pore-sealing method for thermal spray coating by virtue of nanometer aluminum oxide and application of method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108034916A (en) * | 2017-12-11 | 2018-05-15 | 马鞍山蓝科再制造技术有限公司 | A kind of electric arc spraying dusty material |
| CN111139424A (en) * | 2019-12-31 | 2020-05-12 | 陕西斯瑞新材料股份有限公司 | Stainless steel wet hydrogen preparation method for improving thermal emissivity and application |
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Application publication date: 20161221 |