CN111394684A - Erosion-resistant wear-resistant zirconium-based amorphous composite gradient coating of outer cylinder of MWD (measurement while drilling) instrument - Google Patents
Erosion-resistant wear-resistant zirconium-based amorphous composite gradient coating of outer cylinder of MWD (measurement while drilling) instrument Download PDFInfo
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- 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
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- 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
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Abstract
The invention belongs to the technical field of ceramic coating preparation, and particularly relates to an anti-erosion wear-resistant zirconium-based amorphous composite gradient coating for an outer cylinder of a Measurement While Drilling (MWD) instrument. The coating is sequentially provided with a priming layer, a gradient layer and a working layer from bottom to top; spraying Ni/Al composite powder on the bottom layer, spraying mixed powder of Ni/Al composite powder and ceramic powder with the same composition as the working layer on the gradient layer, and spraying Al on the working layer2O3Powder of Cr2O3The powder and the zirconium-based amorphous alloy powder. Small amounts of working coating are addedThe zirconium-based amorphous alloy powder can better improve the strength, hardness, wear resistance and corrosion resistance of the coating. The non-magnetic powder is selected to prepare the gradient coating, so that the wireless signal transmission in the outer cylinder of the MWD instrument is not influenced, the comprehensive performance of the outer cylinder of the MWD instrument can be improved, and the service life of the outer cylinder of the MWD instrument is prolonged.
Description
Technical Field
The invention belongs to the technical field of ceramic coating preparation, and particularly relates to an erosion-resistant wear-resistant zirconium-based amorphous composite gradient coating of an outer cylinder of an MWD (measurement while drilling) instrument.
Background
With the continuous deepening of oil exploration and development, stratum structures are more and more complex, and special and complex wells such as deep wells, ultra-deep wells, high-temperature wells, high-pressure wells and the like are more and more, so that the adoption of a directional drilling technology is the key of oil field drilling. The accurate measurement and accurate positioning of the directional well are one of the important factors for the success of directional drilling, and the inclination measurement while drilling is an important means for evaluating oil reservoirs of highly deviated wells, horizontal wells, small-bore wells and sidetrack multilateral wells. At present, most of high-precision drilling-while-drilling inclinometer systems used in various domestic oil fields are introduced from abroad, and have the disadvantages of high price, long production period and inconvenient maintenance.
The outer cylinder of the MWD instrument in China is usually made of beryllium bronze, the mass fraction of beryllium in the usually used beryllium bronze is 1.7-2.5%, and the beryllium bronze can have extremely high strength and hardness after solid solution and aging treatment and far exceed that of all other copper alloys. Its elasticity limit and fatigue limit wear resistance are also good, and it is an alloy with various properties combined well. However, because the working condition of a construction well in the drilling process is extremely bad, the drilling fluid erodes the outer cylinder of the MWD instrument and sand grains abrade the outer cylinder, so that the outer cylinder is easy to puncture and leak, the instrument is scrapped, and the drilling operation period and the production efficiency are seriously influenced.
Disclosure of Invention
The invention provides an anti-erosion wear-resistant zirconium-based amorphous composite gradient coating aiming at the problems, which does not influence the wireless signal transmission in the outer cylinder of the MWD instrument, can improve the comprehensive performance of the outer cylinder of the MWD instrument, prolongs the service life of the outer cylinder of the MWD instrument and improves the production efficiency.
The technical scheme of the invention is as follows:
an erosion-resistant wear-resistant zirconium-based amorphous composite gradient coating of an outer cylinder of an MWD instrument is provided with a priming layer, a gradient layer and a working layer from bottom to top in sequence; each layer comprises the following components in percentage by mass:
a working layer: in Al2O3Mixing 30-50 wt% of Cr into the powder2O3Adding a small amount of zirconium-based amorphous alloy powder to form mixed powder;
the gradient layer is divided into a first gradient layer, a second gradient layer and a third gradient layer;
a third gradient layer: Ni/Al composite powder: al (Al)2O3Powder of Cr2O3The mixed powder consisting of the powder and the zirconium-based amorphous alloy powder is (0.5-1.5): 2;
a second gradient layer: Ni/Al composite powder: al (Al)2O3Powder of Cr2O3The mixed powder consisting of the powder and the zirconium-based amorphous alloy powder is 1: 1;
a first gradient layer: Ni/Al composite powder: al (Al)2O3Powder of Cr2O3The mixed powder consisting of the powder and the zirconium-based amorphous alloy powder is 2 (0.5-1.5);
al in each gradient layer2O3Powder of Cr2O3The compositions of the powder and the zirconium-based amorphous alloy powder are the same as those of the working layer;
priming a bottom layer: Ni/Al composite powder;
the Ni/Al composite powder is nickel-coated aluminum alloy powder, is alloy powder with heat release characteristic, and can generate heat release reaction between Ni and Al in the spraying process, so that strong micro-metallurgical bonding is generated between a coating and a substrate; the aluminum ions and chromium ions in the aluminum oxide and chromium oxide are trivalent cations, and the two oxides have A2X3The type structure, rhombohedral crystal, can produce infinite solid solutions. This solid solution is like the oxide film Al of aluminum and chromium in a superalloy2O3·Cr2O3Also, it has excellent chemical stability and high temperature oxidation resistance. The coating has high hardness and good wear resistance, and is particularly suitable for occasions of corrosion and wear resistance.
The three-layer gradient transition layer is designed, the content of metal powder is gradually reduced, the content of ceramic powder is gradually increased, the problem of thermal stress in the coating can be solved to a great extent, and the bonding strength of the coating is improved. The layers cooperate with each other to improve the performance of the coating.
The invention has the advantages that the components of the material are changed in a continuous gradient from the gradient layer to the working layer, the thermal expansion coefficient is in a step shape, the change trend is mild, the internal stress between the coating, particularly between the coating and the substrate, can be reduced, the bonding strength between the coating and the substrate is improved, and the erosion resistance, the abrasion resistance and the like of the gradient coating are greatly improved.
The content of the zirconium-based amorphous alloy powder added into the working layer is 1-3 wt%, and the Cr content is2O3The addition of the powder and the zirconium-based amorphous alloy powder enables the working layer to be more compact and better in corrosion resistance; the addition of the zirconium-based amorphous alloy powder can also enable the working layer to have high hardness and high wear resistance; wherein, the composition of the zirconium-based amorphous alloy powder is shown in table 1.
TABLE 1
The average grain diameter of the Ni/Al composite powder is 45-90 mu m; the Al content of the Ni/Al composite powder is 18-22 wt%, and the Ni content is 78-82 wt%.
The Al is2O3Powder with the particle size of 28-50 mu m; the Cr2O3Powder with a particle size of 28 to 53 μm.
The thicknesses of the bottom layer, the gradient layer and the working layer are respectively 30 micrometers, 90-150 micrometers and 80-100 micrometers.
The outer cylinder of the MWD instrument is made of beryllium bronze.
The preparation method of the gradient composite coating comprises the following steps:
(1) carrying out roughening treatment on the matrix;
(2) preheating the substrate treated in the step (1) at 180-200 ℃; firstly spraying a Ni/Al priming layer by adopting a plasma spraying technology, wherein the spraying power is as follows: 24 kW; and then respectively spraying three gradient layers with the spraying power respectively as follows: 26kW, 28kW, 30 kW; and finally, spraying a working layer, wherein the spraying power is as follows: 32 kW.
(3) And carrying out surface hole sealing treatment on the sprayed sample.
The invention has the beneficial effects that:
(1) the aluminum oxide and the chromium oxide are both rhombohedral crystals and can generate infinite solid solutions, and the zirconium-based amorphous alloy powder is added into the mixed powder of the two oxides, so that the prepared coating has higher strength, hardness, wear resistance and erosion resistance.
(2) The gradient coating prepared by the invention has uniform tissue, smooth and compact surface and good combination, and the component gradient distribution structure can give full play to the advantages of each layer and can prolong the service life of the outer cylinder of the MWD instrument.
(3) The erosion-resistant and wear-resistant amorphous gradient coating is prepared on the surface of the outer cylinder of the MWD instrument, so that the replacement frequency of the coating is reduced, the manufacturing and replacement cost of the outer cylinder of the MWD instrument is saved, and the stability of MWD signal transmission is ensured.
Drawings
FIG. 1 is a schematic structural diagram of a gradient composite coating.
Detailed Description
The present invention is further described below with reference to examples, but is not limited thereto.
Example 1
An erosion-resistant wear-resistant amorphous gradient coating of an outer cylinder of an MWD instrument is provided, wherein a priming layer, a gradient layer and a working layer are sequentially arranged on the gradient coating from bottom to top; the priming layer is a metal layer and is formed by spraying Ni/Al composite powder (45-60 mu m), wherein the mass ratio of Ni: 80 wt%, Al: 20 wt% and a thickness of 30 μm; a first gradient layer: Ni/Al composite powder: al (Al)2O3Powder of Cr2O3A mixed powder of the powder and a zirconium-based amorphous alloy powder (Zr: 65 wt%, Ti: 8 wt%, Cu: 15 wt%, Ni: 10 wt%, M (Y: 0.7 wt% + Gd: 1 wt% + Sc: 0.3 wt%)) was 4:1, and the thickness was 40 μ M; a second gradient layer: Ni/Al composite powder: al (Al)2O3Powder of Cr2O3The mixed powder consisting of the powder and the zirconium-based amorphous alloy powder is 1:1, and the thickness is 40 mu m; a third gradient layer: Ni/Al composite powder: al (Al)2O3Powder of Cr2O3The mixed powder consisting of the powder and the zirconium-based amorphous alloy powder is 1:4, and the thickness is 40 mu m; working layer spraying Al2O3And Cr2O3Adding a small amount of zirconium-based amorphous alloy powder into the mixed powder; wherein, Al2O3And Cr2O3The average particle diameter of the mixed powder of (a): 30 to 45 μm, Cr2O3The content of (B) is 50 wt%; the content of the added zirconium-based amorphous alloy powder is 1 wt%; the thickness of the working layer was 80 μm. The porosity of the prepared coating is 3.7%, and the deposition efficiency of the coating is 38.6%. The microhardness of the coating was 950 HV. And (3) keeping the temperature of the sample at 600 ℃ for 10-15 min, performing water quenching, and sequentially circulating until the coating fails, wherein the thermal shock frequency of the coating is 108 times.
Example 2
Erosion-resistant wear-resistant zirconium-based amorphous composite gradient coating of outer cylinder of MWD (measurement while drilling) instrument, wherein the gradient coating is sequentially arranged from bottom to topA bottom layer, a gradient layer and a working layer; the priming layer is a metal layer and is formed by spraying Ni/Al composite powder (45-60 mu m), wherein the mass ratio of Ni: 80 wt%, Al: 20 wt% and a thickness of 30 μm; a first gradient layer: Ni/Al composite powder: al (Al)2O3Powder of Cr2O3A mixed powder of the powder and a zirconium-based amorphous alloy powder (Zr: 65 wt%, Ti: 8 wt%, Cu: 15 wt%, Ni: 10 wt%, M (Y: 0.7 wt% + Gd: 1 wt% + Sc: 0.3 wt%)) was 2:1, and the thickness was 40 μ M; a second gradient layer: Ni/Al composite powder: al (Al)2O3Powder of Cr2O3The mixed powder consisting of the powder and the zirconium-based amorphous alloy powder is 1:1, and the thickness is 40 mu m; a third gradient layer: Ni/Al composite powder: al (Al)2O3Powder of Cr2O3The mixed powder consisting of the powder and the zirconium-based amorphous alloy powder is 1:2, and the thickness is 40 mu m; working layer spraying Al2O3And Cr2O3Adding a small amount of zirconium-based amorphous alloy powder into the mixed powder; wherein, Al2O3And Cr2O3The average particle diameter of the mixed powder of (a): 30 to 45 μm, Cr2O3The content of (B) is 40 wt%; the content of the added zirconium-based amorphous alloy powder is 2 wt%; the thickness of the working layer was 80 μm. The porosity of the prepared coating is 3.1%, and the deposition efficiency of the coating is 42.7%. The microhardness of the coating was 1068 HV. And (3) keeping the temperature of the sample at 600 ℃ for 10-15 min, performing water quenching, and sequentially circulating until the coating fails, wherein the thermal shock frequency of the coating is 122 times.
Example 3
An erosion-resistant wear-resistant zirconium-based amorphous composite gradient coating of an outer cylinder of an MWD instrument is provided, wherein a priming layer, a gradient layer and a working layer are sequentially arranged on the gradient coating from bottom to top; the priming layer is a metal layer and is formed by spraying Ni/Al composite powder (45-60 mu m), wherein the mass ratio of Ni: 80 wt%, Al: 20 wt% and a thickness of 30 μm; a first gradient layer: Ni/Al composite powder: al (Al)2O3Powder of Cr2O3A mixed powder of the powder and a zirconium-based amorphous alloy powder (Zr: 65 wt%, Ti: 8 wt%, Cu: 15 wt%, Ni: 10 wt%, M (Y: 0.7 wt% + Gd: 1 wt% + Sc: 0.3 wt%)) was 7:3, and the thickness was 40 μ M; first, theTwo gradient layers: Ni/Al composite powder: al (Al)2O3Powder of Cr2O3The mixed powder consisting of the powder and the zirconium-based amorphous alloy powder is 1:1, and the thickness is 40 mu m; a third gradient layer: Ni/Al composite powder: al (Al)2O3Powder of Cr2O3The mixed powder consisting of the powder and the zirconium-based amorphous alloy powder is 3:7, and the thickness is 40 mu m; working layer spraying Al2O3And Cr2O3Adding a small amount of zirconium-based amorphous alloy powder into the mixed powder; wherein, Al2O3And Cr2O3The average particle diameter of the mixed powder of (a): 30 to 45 μm, Cr2O3The content of (B) is 30 wt%; the content of the added zirconium-based amorphous alloy powder is 3 wt%; the thickness of the working layer was 80 μm. The porosity of the prepared coating is 2.5%, and the deposition efficiency of the coating is 45.4%. The microhardness of the coating was 1150 HV. And (3) keeping the temperature of the sample at 600 ℃ for 10-15 min, performing water quenching, and sequentially circulating until the coating fails, wherein the thermal shock frequency of the coating is 137 times.
Comparative example 1
An erosion-resistant wear-resistant amorphous gradient coating of an outer cylinder of an MWD instrument is composed of a priming coat and a working coat; the priming layer is formed by spraying Ni/Al composite powder (45-60 mu m), wherein the mass ratio of Ni: 80 wt%, Al: 20 wt% and a thickness of 30 μm; working layer spraying Al2O3And Cr2O3A small amount of zirconium-based amorphous alloy powder (Zr: 65 wt%, Ti: 8 wt%, Cu: 15 wt%, Ni: 10 wt%, M (Y: 0.7 wt% + Gd: 1 wt% + Sc: 0.3 wt%)) was added to the mixed powder of (A); wherein, Al2O3And Cr2O3The average particle diameter of the mixed powder of (a): 30 to 45 μm, Cr2O3The content of (B) is 50 wt%; the content of the added zirconium-based amorphous alloy powder is 1 wt%; the thickness of the working layer was 80 μm. The porosity of the prepared coating is 3.82%, and the deposition efficiency of the coating is 37.9%. The microhardness of the coating was 923 HV. And (3) keeping the temperature of the sample at 600 ℃ for 10-15 min, performing water quenching, and sequentially circulating until the coating fails, wherein the thermal shock frequency of the coating is 87 times.
Comparative example 2
An erosion-resistant wear-resistant zirconium-based amorphous composite gradient coating of an outer cylinder of an MWD instrument is provided, wherein a priming layer, a gradient layer and a working layer are sequentially arranged on the gradient coating from bottom to top; the priming layer is formed by spraying Ni/Al composite powder (45-60 mu m), wherein the mass ratio of Ni: 80 wt%, Al: 20 wt% and a thickness of 30 μm; gradient layer: Ni/Al composite powder: al (Al)2O3Powder of Cr2O3A mixed powder of the powder and a zirconium-based amorphous alloy powder (Zr: 65 wt%, Ti: 8 wt%, Cu: 15 wt%, Ni: 10 wt%, M (Y: 0.7 wt% + Gd: 1 wt% + Sc: 0.3 wt%)) was 1:1, and the thickness was 40 μ M; working layer spraying Al2O3And Cr2O3Adding a small amount of zirconium-based amorphous alloy powder into the mixed powder; wherein, Al2O3And Cr2O3The average particle diameter of the mixed powder of (a): 30 to 45 μm, Cr2O3The content of (B) is 40 wt%; the content of the added zirconium-based amorphous alloy powder is 2 wt%; the thickness of the working layer was 80 μm. The porosity of the prepared coating is 3.22%, and the deposition efficiency of the coating is 41.4%. The microhardness of the coating was 996 HV. And (3) keeping the temperature of the sample at 600 ℃ for 10-15 min, performing water quenching, and sequentially circulating until the coating fails, wherein the thermal shock frequency of the coating is 103 times.
Comparative example 3
An erosion-resistant wear-resistant zirconium-based amorphous composite gradient coating of an outer cylinder of an MWD instrument is provided, wherein a priming layer, a gradient layer and a working layer are sequentially arranged on the gradient coating from bottom to top; the priming layer is formed by spraying Ni/Al composite powder (45-60 mu m), wherein the mass ratio of Ni: 80 wt%, Al: 20 wt% and a thickness of 30 μm; gradient layer: Ni/Al composite powder: al (Al)2O3Powder of Cr2O3A mixed powder of the powder and a zirconium-based amorphous alloy powder (Zr: 65 wt%, Ti: 8 wt%, Cu: 15 wt%, Ni: 10 wt%, M (Y: 0.7 wt% + Gd: 1 wt% + Sc: 0.3 wt%)) was 1:1, and the thickness was 120 μ M; working layer spraying Al2O3And Cr2O3Adding a small amount of zirconium-based amorphous alloy powder into the mixed powder; wherein, Al2O3And Cr2O3The average particle diameter of the mixed powder of (a): 30 to 45 μm, Cr2O3The content of (B) is 30 wt%; the content of the added zirconium-based amorphous alloy powder is 3 wt%; the thickness of the working layer was 80 μm. The porosity of the prepared coating is 2.65%, and the deposition efficiency of the coating is 44.8%. The microhardness of the coating was 1072 HV. And (3) keeping the temperature of the sample at 600 ℃ for 10-15 min, water quenching, and circulating in sequence until the coating fails. The thermal shock times of the coating were 112.
Comparative example 4:
an erosion-resistant and wear-resistant gradient coating of an outer cylinder of an MWD instrument is provided, wherein a priming layer, a gradient layer and a working layer are sequentially arranged on the gradient coating from bottom to top; the priming layer is formed by spraying Ni/Al composite powder (45-60 mu m), wherein the mass ratio of Ni: 80 wt%, Al: 20 wt% and a thickness of 30 μm; a first transition layer: Ni/Al composite powder: al (Al)2O3Powder and Cr2O3Mixed powder consisting of the powder is 7:3, and the thickness is 40 mu m; a second gradient layer: Ni/Al composite powder: al (Al)2O3Powder and Cr2O3Powder composition 1:1, thickness 40 μm; a third gradient layer: Ni/Al composite powder: al (Al)2O3Powder and Cr2O3Powder composition of 3:7, thickness 40 μm; working layer spraying Al2O3And Cr2O3A mixed powder of the components; wherein, Al2O3And Cr2O3The average particle diameter of the mixed powder of (a): 30 to 45 μm, Cr2O3The content of (B) is 30 wt%; the thickness of the working layer was 80 μm. The porosity of the prepared coating is 3.2%, and the deposition efficiency of the coating is 41.7%. The microhardness of the coating was 975 HV. And (3) keeping the temperature of the sample at 600 ℃ for 10-15 min, performing water quenching, and sequentially circulating until the coating fails, wherein the thermal shock frequency of the coating is 92 times.
The present invention is not limited to the above-described embodiments, and any obvious improvements, substitutions or modifications can be made by those skilled in the art without departing from the spirit of the present invention.
Claims (8)
1. The utility model provides a Measurement While Drilling (MWD) instrument urceolus is towards anti erosion wear-resisting zirconium base amorphous composite gradient coating, its characterized in that, the gradient coating sets up priming layer, gradient layer and working layer from bottom to top in proper order, and wherein, the gradient layer divide into first gradient layer, second gradient layer and third gradient layer.
2. The erosion-resistant wear-resistant zirconium-based amorphous composite gradient coating of claim 1, wherein each layer of the gradient coating comprises the following components in percentage by mass:
a working layer: in Al2O3Mixing 30-50 wt% of Cr into the powder2O3Adding 1-3 wt% of zirconium-based amorphous alloy powder to form mixed powder;
a third gradient layer: Ni/Al composite powder and Al2O3Powder of Cr2O3The mass ratio of mixed powder consisting of the powder and the zirconium-based amorphous alloy powder is 0.5-1.5: 2;
a second gradient layer: Ni/Al composite powder and Al2O3Powder of Cr2O3The mass ratio of mixed powder consisting of the powder and the zirconium-based amorphous alloy powder is 1: 1;
a first gradient layer: Ni/Al composite powder and Al2O3Powder of Cr2O3The mass ratio of the mixed powder consisting of the powder and the zirconium-based amorphous alloy powder is 2: 0.5-1.5;
al in each gradient layer2O3Powder of Cr2O3The composition of the powder and the zirconium-based amorphous alloy powder is the same as that of the working layer;
priming a bottom layer: Ni/Al composite powder.
3. The erosion-resistant and wear-resistant zirconium-based amorphous composite gradient coating as claimed in claim 2, wherein the average particle size of the Ni/Al composite powder is 45-90 μm, the content of Al in the Ni/Al composite powder is 18-22 wt%, and the content of Ni is 78-82 wt%.
4. The erosion-resistant and wear-resistant zirconium-based amorphous alloy of claim 2, wherein the zirconium-based amorphous alloy is a zirconium-based amorphous alloyThe composite gradient coating is characterized in that the Al is2O3Powder with a particle size of 28 to 50 μm.
5. The erosion resistant and wear resistant zirconium based amorphous composite gradient coating of claim 2, wherein said Cr is present in a form selected from the group consisting of2O3Powder with a particle size of 28 to 53 μm.
6. The erosion-resistant and wear-resistant zirconium-based amorphous composite gradient coating of claim 2, wherein the thicknesses of the primer layer, the gradient layer and the working layer are 30 μm, 90-150 μm and 80-100 μm, respectively.
7. The method for preparing the erosion-resistant and wear-resistant zirconium-based amorphous composite gradient coating according to claim 1, comprising the following steps:
(1) carrying out roughening treatment on the matrix;
(2) preheating the matrix treated in the step (1); firstly spraying a Ni/Al priming coat by adopting a plasma spraying technology; respectively spraying three gradient layers; finally spraying a working layer;
(3) and carrying out surface hole sealing treatment on the sprayed sample.
8. The erosion-resistant wear-resistant zirconium-based amorphous composite gradient coating prepared by the method according to claim 1, wherein the porosity of the obtained gradient coating is 2.5-3.7%, the microhardness is 950-1150 HV, the deposition efficiency of the coating is 38.6-45.4%, and the thermal shock frequency of failure of the coating is not less than 100 times under the conditions of water quenching at 600 ℃.
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| CN115354261A (en) * | 2022-09-01 | 2022-11-18 | 天津华能杨柳青热电有限责任公司 | Anti-coking, wear-resistant and corrosion-resistant gradient composite material and preparation method thereof |
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| KR20000039464A (en) * | 1998-12-14 | 2000-07-05 | 신현준 | Alloy powdered material of zirconium for amorphous thermal spraying coating |
| CN102560315A (en) * | 2011-12-14 | 2012-07-11 | 华北电力大学 | NiAl-TiB2 composite gradient coating and preparation method thereof |
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| CN109622978A (en) * | 2019-01-08 | 2019-04-16 | 东莞辰越新材料科技有限公司 | A kind of amorphous powdered alloy and its preparation method and application |
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| KR20000039464A (en) * | 1998-12-14 | 2000-07-05 | 신현준 | Alloy powdered material of zirconium for amorphous thermal spraying coating |
| CN102560315A (en) * | 2011-12-14 | 2012-07-11 | 华北电力大学 | NiAl-TiB2 composite gradient coating and preparation method thereof |
| CN103184399A (en) * | 2011-12-31 | 2013-07-03 | 江苏太阳宝新能源有限公司 | Solar photo-thermal power generation high temperature protective coating and preparation method thereof |
| CN109622978A (en) * | 2019-01-08 | 2019-04-16 | 东莞辰越新材料科技有限公司 | A kind of amorphous powdered alloy and its preparation method and application |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115354261A (en) * | 2022-09-01 | 2022-11-18 | 天津华能杨柳青热电有限责任公司 | Anti-coking, wear-resistant and corrosion-resistant gradient composite material and preparation method thereof |
| CN115354261B (en) * | 2022-09-01 | 2024-01-23 | 天津华能杨柳青热电有限责任公司 | Anti-coking wear-resistant corrosion-resistant gradient composite material and preparation method thereof |
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