CN108893696A - A kind of nano-carbide enhancing tungsten carbide-base composite powder that highly resistance erosion and antiknock are split, coating and preparation method thereof - Google Patents
A kind of nano-carbide enhancing tungsten carbide-base composite powder that highly resistance erosion and antiknock are split, coating and preparation method thereof Download PDFInfo
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- CN108893696A CN108893696A CN201810678869.XA CN201810678869A CN108893696A CN 108893696 A CN108893696 A CN 108893696A CN 201810678869 A CN201810678869 A CN 201810678869A CN 108893696 A CN108893696 A CN 108893696A
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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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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/12—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
- C23C4/129—Flame spraying
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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
- C23C4/12—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
- C23C4/134—Plasma spraying
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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
- C23C4/18—After-treatment
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Abstract
The invention discloses a kind of highly resistance erosion and nano-carbide that antiknock is split enhancing tungsten carbide-base composite powder, coating and preparation method thereof, the powder is by as follows at being grouped as：Tungsten carbide (WC), metal adhesive, nano-carbide hardening constituent, the nano-carbide hardening constituent are one of tantalum carbide (TaC), titanium carbide (TiC), zirconium carbide (ZrC) or a variety of.Composite powder of the invention can effectively improve the intensity and hardness of metallic binding phase, crystal grain of the WC in thermal spray process is inhibited to grow up simultaneously, the relatively common tungsten carbide-base metal-cermic coating of its coating anti-erosion property improves 50~200%, and its toughness is also significantly increased, occur almost without explosion, the coating also maintains good resistant to high temperatures simultaneously, anticorrosive and anti-cavitation performance, furthermore the preparation method process of composite coating, performance is stablized, it is suitble to the hydraulic turbine, the Anti-erosions such as water pump, the application of anti-cavitation field, it is particularly suitable in high silt water environment.
Description
Technical field
The invention belongs to material surface strengthening technical field, it is related to a kind of tungsten carbide-base metal ceramic powder and coating, especially
It is related to the nano-carbide enhancing tungsten carbide-base composite powder that a kind of highly resistance erosion and antiknock split, coating and preparation method thereof.
Background technique
Erosive wear, cavitation, corrosion are one of the principal modes for causing the hydraulics such as the hydraulic turbine to fail, it is widely present
In the flow passage components of the machinery such as the hydraulic turbine, water pump, cause hydraulic efficiency equipment operational efficiency low, the lost of life, sternly
Ghost image rings the stability and safe operation of unit, comes huge resource and economic waste.Thermal spraying tungsten-carbide cermet applies
Layer has good anti-erosion property and certain anti-cavitation and corrosion resistance, but in the high silt water flow such as Xinjiang, the Yellow River, heat
The anti-silt erosion of sprayed wc metal-cermic coating still has deficiency, and tungsten carbide often occurs in especially anti-quartzy sand erosion
Coating Decrepitation Phenomena causes disbonding to fail.And it can be to tungsten-carbide cermet coating during hydraulic high-speed cruising
It generates huge cavitation effect and causes it that can not play anti-cavitation protection to substrate.It is sent out by the micro-analysis to failure coating
Existing, in high silt water flow, since the hardness of sand grains is big, under the continuous percussion of silt carrying flow, sand grains is first to carbonization
The Binder Phase of tungsten base coating causes serious shear action.The Binder Phase of coating is acted on by the micro-cutting for washing away particle and plow
And remove, cause WC particle exposed in coating surface.With gradually decreasing for surface layer Binder Phase, opposite cover's WC particle is bonded
Cementation also weakens gradually, and generates and fall off under the impact of subsequent particle, and coating is gradually worn out.Simultaneously in the height of silt
Speed is impacted lower coating and is cracked, and crackle constantly extends and extends under subsequent long-time percussion, causes coating quick-fried
Split failure.Thus, long-term Anti-erosion protective effect can not be played.
Summary of the invention
In view of the above-mentioned deficiencies in the prior art, it is an object of the present invention to provide the nano silicon carbide that a kind of highly resistance erosion and antiknock are split
Object enhances tungsten carbide-base composite powder, coating and preparation method thereof, with solve existing tungsten carbide-base metal ceramic coating material without
Method meets the problem of Practical Project requirement, while taking into account good corrosion energy, improves the Anti-erosion of equipment and resists
Burst performance.
The present invention adopts the following technical scheme that realization：
The nano-carbide enhancing tungsten carbide-base composite powder that a kind of highly resistance erosion and antiknock are split, it is as follows at being grouped as：
Tungsten carbide (WC)：30~80wt%, metal adhesive：10~60wt%, nano-carbide hardening constituent：5~
20wt%, the nano-carbide hardening constituent be one of tantalum carbide (TaC), titanium carbide (TiC), zirconium carbide (ZrC) or
A variety of combinations.
In above-mentioned technical proposal, the metal adhesive is the combination of one or both of Co, Cr, Ni.
The granularity of the tungsten carbide (WC) is 0.5 μm~8 μm or 50nm~200nm.
The nano-carbide hardening constituent granularity is 20~100nm.
The particle scale of the composite powder is 10~55 μm.
Using the composite powder as raw material, using kerosene supersonic flame spraying or the atmosphere supersonic flame spraying raw material,
It can be formed directly in the nano-carbide enhancing tungsten carbide-base composite coating that highly resistance erosion and antiknock are split；Alternatively, by kerosene supersonic speed
It after flame-spraying or the atmosphere supersonic flame spraying raw material, then forms through high enthalpy plasma remelting, can get the composite coating.
Its specific preparation process is as follows：
1) tungsten carbide, metal adhesive, nano-carbide hardening constituent are configured by certain mass percent, to matching
The formula material addition alcohol and polyethylene glycol set, carry out being sufficiently mixed 20~30 hours in ball mill.
2) spray drying granulation is carried out to the slurry prepared using water atomization or alcohol atomization, it is original compound by what is be granulated
It is sintered in the molybdenum wire furnace that powder is put under hydrogen shield atmosphere, sintering temperature is 1000~1250 DEG C.It is carried out brokenly after sintering
Broken screening obtains the nano-carbide enhancing tungsten carbide-base composite powder that highly resistance erosion and antiknock are split, and particle scale is 10~55
μm。
3) it by above-mentioned composite powder, is placed in incubator and is dried, holding temperature is 60~100 DEG C, drying time 1
~2 hours.
4) carbon steel or steel alloy substrate surface cleaned, derusted, dried, and to its surface sand-blasting texturing, after sandblasting
Surface roughness is 6.3~12.0 μm.
5) using the composite powder dried in step 3) as raw material, using kerosene supersonic flame spraying or atmosphere supersonic speed
Flame-spraying or high enthalpy plasma spraying raw material directly form the nano-carbide enhancing tungsten carbide that highly resistance erosion and antiknock are split
Base composite coating；Or by kerosene supersonic flame spraying or atmosphere supersonic flame spraying or high enthalpy plasma spraying raw material
Afterwards, then through high enthalpy plasma remelting it forms, obtains the nano-carbide enhancing compound painting of tungsten carbide-base that highly resistance erosion and antiknock are split
Layer.
The porosity < 0.5% for the composite coating that the present invention obtains；The bond strength of composite coating reaches 80MPa or more,
Under high silt flow condition, the erosion weightlessness of composite coating is only the 3.3%~6.7% of 0Cr13Ni5Mo high strength stainless steel, vapour
Weightless erosion is high strength stainless steel 77%~67%, is occurred almost without burst conditions, and corrosion potential is higher than common tungsten carbide-base
Metal-cermic coating.The composite coating has more excellent Anti-erosion antiknock while with anticorrosive, high temperature resistant property
Fragility energy.
The beneficial effects of the invention are as follows：
The present invention is constantly probed by selection to tungsten carbide-base powdery components and coating production, is had
The nano-carbide enhancing tungsten carbide-base composite powder and coating that highly resistance erosion and antiknock are split, effectively improve the strong of metallic binding phase
Degree and hardness, while crystal grain of the WC in thermal spray process being inhibited to grow up, the relatively common tungsten carbide-base of coating anti-erosion property
Metal-cermic coating improves 50-200%, and its toughness is also significantly increased, and occurs almost without explosion, while the coating is also protected
Good anticorrosive and anti-cavitation performance is held, furthermore the preparation method process of composite coating, performance is stablized, and water wheels are suitble to
The Anti-erosions such as machine, water pump, the application of anti-cavitation field are particularly suitable in high silt water environment.
Specific embodiment
Below in conjunction with example, the present invention will be further described.
The kerosene supersonic flame spraying technological parameter used in the embodiment of the present invention：Kerosene oil flow is 22~30L/h, coal
Oil pressure is 1.5~2.0MPa, and oxygen flow is 840~950L/min, and oxygen pressure is 1.7~2.0MPa, and powder feeding rate is
80~100g/min, nitrogen flow be 10~15L/min, nitrogen pressure be 1.0~1.2MPa, spray distance be 350mm~
400mm。
The atmosphere supersonic flame spraying technological parameter used in the embodiment of the present invention：Propane pressure is 0.6~0.8MPa,
Air pressure：0.7~0.9MPa, nitrogen pressure：0.2~0.4MPa, powder feeding rate are 80~120g/min, spray distance 150
~220mm.
High enthalpy plasma remelting technological parameter is used in the embodiment of the present invention：Spray gun power is 80~100kW, argon flow
For 250~400SCFH (cubic feet/hour), nitrogen flow is 100~150SCFH (cubic feet/hour), hydrogen flowing quantity
For 90~130SCFH (cubic feet/hour), powder feeding rate is 80~110g/min, 50~150mm of operating distance.
The nano-carbide enhancing tungsten carbide-base composite powder split in the embodiment of the present invention using a kind of highly resistance erosion and antiknock
End is used as raw material, at being grouped into tungsten carbide (WC)：30~80wt%, metal adhesive：10~60wt%, nano-carbide
Hardening constituent：5~20wt%.The metal adhesive is the one of which or two kinds of combination of Co, Cr, Ni.The nanometer
Carbide reinforced phase is one of tantalum carbide (TaC), titanium carbide (TiC), zirconium carbide (ZrC) or two kinds or three kinds of combination.
Tungsten carbide (WC) granularity is 0.5~8 μm or 50nm~200nm.The nano-carbide hardening constituent granularity
For 20~100nm；The particle scale of the composite powder is 10~55 μm.
Matrix is sprayed in the embodiment of the present invention uses 45 carbon steels or 0Cr13Ni5Mo stainless steel.
Embodiment 1
By the tungsten carbide (WC), metal adhesive Co, the nanometer tantalum carbide that granularity is 30~50nm that granularity is 60~100nm
(TaC) tungsten carbide (WC) is pressed：80wt%, metal adhesive Co：15wt%, nanometer tantalum carbide (TaC)：The quality percentage of 5wt%
Than being configured, alcohol and polyethylene glycol are added to configured formula material, carries out being sufficiently mixed 20 hours in ball mill.
Spray drying granulation is carried out to the slurry prepared using water atomization, the original composite powder being granulated is put into hydrogen
It is sintered in molybdenum wire furnace under protective atmosphere, sintering temperature is 1100 DEG C.Crushing and screening is carried out after sintering obtains highly resistance erosion
The nanometer tantalum carbide enhancing tungsten carbide-cobalt composite powder end that antiknock is split.The particle scale of the composite powder is 15~45 μm.
It by above-mentioned composite powder, is placed in incubator and is dried, holding temperature is 60 DEG C, and drying time is 1 hour.
Carbon steel surface is cleaned, derusted, is dried, and to its surface sand-blasting texturing, sandblasting rear surface roughness is 6.3
~12.0 μm.
Using the composite powder dried as raw material, using the kerosene supersonic flame spraying raw material, spraying parameter：Coal
Oil stream amount is 25L/h, and kerosene pressure is 1.5MPa, oxygen flow 865L/min, oxygen pressure 2.0MPa, and powder feeding rate is
85g/min, nitrogen flow 10L/min, nitrogen pressure 1.2MPa, spray distance 375mm.Spraying acquisition highly resistance erosion,
The nanometer tantalum carbide that antiknock is split enhances tungsten-cobalt carbide chromium composite coat.
For the composite coating with a thickness of 250 μm, the porosity of coating is 0.36%, and the bond strength of coating is 88MPa, in height
Under silt water flow, the weightless erosion erosion of coating is only the 4.21% of 0Cr13Ni5Mo high strength stainless steel, and no Decrepitation Phenomena, cavitation is lost
Again be only high strength stainless steel 68.32%, the corrosion potential of coating is -0.1969V, be higher than common tungsten carbide coating (about -
0.28V).Composite coating shows highly resistance erosion, anti-spalling, and has good anti-cavitation, corrosion resistance.
Embodiment 2
It is 20~50nm by tungsten carbide (WC) that granularity is 50~90nm, metal adhesive Co, metal adhesive Cr, granularity
Nano titanium carbide (TiC) press tungsten carbide (WC)：70wt%, metal adhesive Co：10wt%, it metal adhesive Cr4wt%, receives
Rice titanium carbide (TiC)：The mass percent of 6wt% is configured, and adds alcohol and polyethylene glycol to configured formula material,
It carries out being sufficiently mixed 25 hours in ball mill.
Spray drying granulation is carried out to the slurry prepared using water atomization, the original composite powder being granulated is put into hydrogen
It is sintered in molybdenum wire furnace under protective atmosphere, sintering temperature is 1150 DEG C.Crushing and screening is carried out after sintering obtains highly resistance erosion
The nano titanium carbide that antiknock is split enhances tungsten-cobalt carbide chromium composite powder.The particle scale of the composite powder is 10~30 μm.
It by above-mentioned composite powder, is placed in incubator and is dried, holding temperature is 60 DEG C, and drying time is 1 hour.
Carbon steel surface is cleaned, derusted, is dried, and to its surface sand-blasting texturing, sandblasting rear surface roughness is 6.3
~12.0 μm.
Using the composite powder dried as raw material, the atmosphere supersonic flame spraying of the use raw material, spraying parameter：
Propane pressure：0.65MPa, air pressure：0.8MPa, nitrogen pressure：0.25MPa, powder feeding rate 80g/min, spray distance
150mm.Spraying obtains highly resistance erosion, antiknock is split, anti-cavitation, the enhancing compound painting of tungsten-cobalt carbide chromium of erosion-resisting nano titanium carbide
Layer.
For the composite coating with a thickness of 235 μm, the porosity of coating is 0.30%, and the bond strength of coating is 84MPa, in height
Under silt water flow, the weightless erosion erosion of coating is the 6.6% of only 0Cr13Ni5Mo high strength stainless steel, almost without Decrepitation Phenomena, vapour
Erosion weightless is only high strength stainless steel 76.16%, and the corrosion potential of coating is -0.1875V, be higher than common tungsten carbide coating (about -
0.28V).Composite coating shows highly resistance erosion, anti-spalling, and has good anti-cavitation, corrosion resistance.
Embodiment 3
It is that the tungsten carbide (WC) of 60~120nm, metal adhesive Ni, metal adhesive Cr, 20~50nm receive by granularity
Rice tantalum carbide (TaC), granularity are the nano-zirconium carbide (ZrC) of the nano titanium carbide (TiC) of 50~80nm, 20~50nm by carbonization
Tungsten (WC)：35wt%, metal adhesive Ni：35wt%, metal adhesive Cr:20wt%, nanometer tantalum carbide (TaC):4wt%,
Nano titanium carbide (TiC)：2wt%, nano-zirconium carbide (ZrC)：The mass percent of 4wt% is configured, and is matched to configured
Square raw material addition alcohol and polyethylene glycol, carry out being sufficiently mixed 28 hours in ball mill.
Spray drying granulation is carried out to the slurry prepared using alcohol atomization, the original composite powder being granulated is put into hydrogen
It is sintered in molybdenum wire furnace under gas shielded atmosphere, sintering temperature is 1150 DEG C.Crushing and screening is carried out after sintering obtains high-impact
The composite powder that erosion antiknock is split.The particle scale of the powder is 15~55 μm.
It by above-mentioned composite powder, is placed in incubator and is dried, holding temperature is 80 DEG C, and drying time is 1.5 hours.
0Cr13Ni5Mo stainless steel surface is cleaned, derusted, is dried, and to its surface sand-blasting texturing, table after sandblasting
Surface roughness is 6.3~12.0 μm.
Using the composite powder dried as raw material, composite powder in supersonic flame spraying this example of use, kerosene stream
Amount is 26L/h, and kerosene pressure is 1.5MPa, oxygen flow 850L/min, oxygen pressure 2.0MPa, powder feeding rate 80g/
Min, nitrogen flow 10L/min, nitrogen pressure 1.2MPa, spray distance 385mm.Then use high enthalpy plasma remelting
Technology carries out remelting to coating, and spray gun power is 96kW, and argon flow is 358SCFH (cubic feet/hour), and nitrogen flow is
125SCFH (cubic feet/hour), hydrogen flowing quantity are 198SCFH (cubic feet/hour), remelting distance 50mm.Obtain highly resistance
Erosion, antiknock split, anti-cavitation, erosion-resisting nanometer tantalum carbide, titanium carbide, zirconium carbide enhancing tungsten-cobalt carbide chromium composite coat.
The composite coating is with a thickness of 250 μm, and almost imporosity, the bond strength of coating are greater than 90MPa, in high mud to coating
Under husky water flow, the erosion weightlessness of coating is the 6.63% of only 0Cr13Ni5Mo high strength stainless steel, is occurred almost without explosion, cavitation is lost
It is again only high strength stainless steel 67%, the corrosion potential of coating is -0.1638V, is higher than common tungsten carbide coating (about -0.28V).
Composite coating shows highly resistance erosion, anti-spalling, and has good anti-cavitation, corrosion resistance.
Claims (7)
1. the nano-carbide that a kind of highly resistance erosion and antiknock are split enhances tungsten carbide-base composite powder, which is characterized in that its ingredient
It forms as follows：
Tungsten carbide (WC)：30~80wt%, metal adhesive：10~60wt%, nano-carbide hardening constituent：5~20wt%, institute
The nano-carbide hardening constituent stated is one of tantalum carbide (TaC), titanium carbide (TiC), zirconium carbide (ZrC) or a variety of groups
It closes.
2. the nano-carbide that highly resistance erosion according to claim 1 and antiknock are split enhances tungsten carbide-base composite powder,
It is characterized in that, the metal adhesive is the combination of one or both of Co, Cr, Ni.
3. the nano-carbide that highly resistance erosion according to claim 1 and antiknock are split enhances tungsten carbide-base composite powder,
It is characterized in that, the granularity of the tungsten carbide (WC) is 0.5 μm~8 μm or 50nm~200nm.
4. the nano-carbide that highly resistance erosion according to claim 1 and antiknock are split enhances tungsten carbide-base composite powder,
It is characterized in that, the nano-carbide hardening constituent granularity is 20~100nm.
5. the nano-carbide that highly resistance erosion according to claim 1 and antiknock are split enhances tungsten carbide-base composite powder,
It is characterized in that, the particle scale of the composite powder is 10~55 μm.
6. the nano-carbide that a kind of highly resistance erosion and antiknock are split enhances tungsten carbide-base composite coating, which is characterized in that described
Coating is sprayed using the composite powder described in claim 5 as raw material using kerosene supersonic flame spraying or atmosphere supersonic flame
Painting or high enthalpy plasma spraying raw material；Or first by kerosene supersonic flame spraying, atmosphere supersonic flame spraying or Gao Han
After the plasma spraying raw material, then through the molding of high enthalpy plasma；It obtains.
7. the preparation for the nano-carbide enhancing tungsten carbide-base composite coating that highly resistance erosion as claimed in claim 6 and antiknock are split
Method, which is characterized in that include the following steps：
1) tungsten carbide, metal adhesive, nano-carbide hardening constituent are configured by mass percentage, to configured formula
Raw material adds alcohol and polyethylene glycol, carries out being sufficiently mixed 20~30 hours in ball mill；
2) spray drying granulation is carried out to the slurry prepared using water atomization or alcohol atomization, the powder being granulated is put into hydrogen
It is sintered in molybdenum wire furnace under protective atmosphere, sintering temperature is 1000~1250 DEG C, and crushing and screening is carried out after sintering and obtains height
The nano-carbide that Anti-erosion and antiknock are split enhances tungsten carbide-base composite powder, and particle scale is 10~55 μm；
3) it by above-mentioned composite powder, is placed in incubator and is dried, holding temperature is 60~100 DEG C, and drying time is 1~2
Hour；
4) carbon steel or steel alloy substrate surface cleaned, derusted, dried, and to its surface sand-blasting texturing, sandblasting rear surface
Roughness is 6.3~12.0 μm；
5) using the composite powder dried in step 3) as raw material, using kerosene supersonic flame spraying or atmosphere supersonic flame
The raw material is sprayed, the nano-carbide enhancing tungsten carbide-base composite coating that highly resistance erosion and antiknock are split directly is formed；Or by kerosene
It after supersonic flame spraying or the atmosphere supersonic flame spraying raw material, then forms through high enthalpy plasma remelting, obtains high-impact
The nano-carbide enhancing tungsten carbide-base composite coating that erosion and antiknock are split.
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| CN109811294A (en) * | 2019-01-30 | 2019-05-28 | 扬州市职业大学(扬州市广播电视大学) | A method of enhancing turbine blade surface with supersonic flame spraying |
| CN110172605A (en) * | 2019-06-03 | 2019-08-27 | 河南四方达超硬材料股份有限公司 | Preparation method of metal-based ceramic composite material powder |
| CN111978088A (en) * | 2020-07-28 | 2020-11-24 | 湘潭大学 | Toughened ultrahigh-density ultrahigh-temperature ablation-resistant coating and preparation method thereof |
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| CN111978088A (en) * | 2020-07-28 | 2020-11-24 | 湘潭大学 | Toughened ultrahigh-density ultrahigh-temperature ablation-resistant coating and preparation method thereof |
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