CN115255355A - Preparation method of high-wear-resistance thermal spraying powder - Google Patents
Preparation method of high-wear-resistance thermal spraying powder Download PDFInfo
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- CN115255355A CN115255355A CN202210869312.0A CN202210869312A CN115255355A CN 115255355 A CN115255355 A CN 115255355A CN 202210869312 A CN202210869312 A CN 202210869312A CN 115255355 A CN115255355 A CN 115255355A
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- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/12—Metallic powder containing non-metallic particles
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/04—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
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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
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- 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
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- B22F9/00—Making metallic powder or suspensions thereof
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- B22F9/04—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
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Abstract
The invention discloses a preparation method of high-wear-resistance thermal spraying powder, which comprises the following steps: placing the sintered material in the carbon nano tube composite modified magnesium oxide treatment solution, stirring and dispersing, washing and drying after stirring; and (3) feeding the sintered material into a grinding machine for grinding, and sieving by 50-100 meshes to obtain the high-wear-resistance thermal spraying powder. The carbon nanotube composite modified magnesium oxide treatment solution is a carbon nanotube modifier formed by matching carbon nanotubes with phosphoric acid buffer solution, silane coupling agent and chitosan, after the magnesium oxide is calcined step by step, the activity is enhanced, the granularity is refined, the magnesium oxide is cooperated with the carbon nanotube modifier, the high specific surface area of the carbon nanotubes bears and loads the magnesium oxide, a sintering material is dispersed and modified in the carbon nanotube composite modified magnesium oxide treatment solution, and the modified sintering material can be ground and refined in the particle size, so that the wear resistance of the product is enhanced.
Description
Technical Field
The invention relates to the technical field of wear-resistant powder, in particular to a preparation method of high-wear-resistance thermal spraying powder.
Background
Tungsten has a high hardness and a high melting point due to a small average particle size of common tungsten carbide (having a molecular formula of WC), and cemented carbide products and spray powder are generally manufactured using the common tungsten carbide as a main raw material, so that it is used for products requiring high hardness and excellent wear resistance, such as tools, spark plugs, engine coatings, and the like. And there has been little application to tungsten carbide as a thermal spray coating to improve the wear resistance of products.
The matching between the existing tungsten carbide and the raw material and the preparation method are rarely reported as a thermal spraying material, the high-wear-resistance thermal spraying powder is the technical point of the research of the invention, and the invention provides the preparation method of the high-wear-resistance thermal spraying powder based on the technical point.
Disclosure of Invention
In view of the drawbacks of the prior art, the present invention is directed to a method for preparing a high wear-resistant thermal spraying powder, which solves the problems mentioned above in the background.
The technical scheme adopted by the invention for solving the technical problem is as follows:
the invention provides a preparation method of high-wear-resistance thermal spraying powder, which comprises the following steps:
the method comprises the following steps: weighing raw materials: 30-40 parts of tungsten carbide, 4-10 parts of modified aluminum borate whisker, 2-6 parts of chromium powder, 1-4 parts of manganese, 1-3 parts of nickel and 45-55 parts of carbon nano tube composite modified magnesium oxide treatment liquid;
step two: sequentially adding the tungsten carbide, the modified aluminum borate crystal whisker, the chromium powder, the manganese and the nickel raw materials in the step one into a stirrer, and stirring and mixing the raw materials fully, wherein the stirring speed is 1200-1500r/min, and the stirring time is 20-30min, so as to obtain a premix;
step three: feeding the premix into a sintering furnace for sintering treatment, wherein the sintering temperature is 600-700 ℃, the sintering time is 1-2h, and obtaining a sintering material after sintering;
step four: placing the sintered material in the carbon nano tube composite modified magnesium oxide treatment solution, stirring and dispersing, washing and drying after stirring;
step five: and (3) feeding the sintered material into a grinding machine for grinding, and sieving by 50-100 meshes to obtain the high-wear-resistance thermal spraying powder.
Preferably, the preparation method of the modified aluminum borate whisker comprises the following steps:
s01: placing the aluminum borate whisker in 3-6 times of hydrochloric acid solution with the mass fraction of 5-9% for ultrasonic dispersion treatment, finishing ultrasonic treatment, washing with water, drying, and then performing proton irradiation treatment for later use;
s02: adding 5-10 parts of sodium dodecyl benzene sulfonate and 1-3 parts of ionic liquid into 20-30 parts of sodium alginate solution, and then adding 1-2 parts of lanthanum nitrate to obtain modified liquid;
s03: and (3) feeding the S01 product into 3-5 times of the modified liquid, stirring for 20-30min at 55-65 ℃, wherein the stirring speed is 500-1000r/min, and after stirring, washing and drying to obtain the modified aluminum borate whisker.
Preferably, the power of the ultrasonic dispersion treatment is 300-350W, and the ultrasonic time is 10-20min; the power of proton irradiation treatment is 100-200W, and the irradiation time is 30-40min.
Preferably, the mass fraction of the sodium alginate solution is 5-10%.
Preferably, the ionic liquid is 1-hexyl-3-methylimidazolium tetrafluoroborate.
Preferably, the rotation speed of the stirring dispersion treatment in the fourth step is 650-800r/min, the stirring time is 35-45min, and the stirring temperature is 55-65 ℃.
Preferably, the preparation method of the carbon nanotube composite modified magnesium oxide treatment fluid comprises the following steps:
s101: adding 5-10 parts of carbon nano tube into 10-20 parts of deionized water, adding phosphoric acid buffer solution, adjusting the pH value to 4.5, then adding 3-6 parts of silane coupling agent and 1-4 parts of chitosan, and fully stirring and mixing to obtain a carbon nano tube modifier;
s102: feeding the magnesium oxide into a calcining furnace for step-by-step calcination, and performing cold quenching treatment by adopting water at the temperature of-5 ℃ after the calcination is finished for later use;
s103: and (3) feeding the magnesium oxide of the S102 into the carbon nano tube modifier of the S101 in an amount which is 3-4 times that of the magnesium oxide, and fully stirring and mixing to obtain the carbon nano tube composite modified magnesium oxide treatment solution.
Preferably, the silane coupling agent is a silane coupling agent KH570.
Preferably, the specific calcination method of the step-by-step calcination is as follows: calcining at 310-350 deg.C for 20-30min, heating to 400 deg.C at 1-3 deg.C/min, holding for 10-15min, tempering to 200-240 deg.C, and holding.
Preferably, the tempering is performed at a rate of 2-5 ℃/min.
Compared with the prior art, the invention has the following beneficial effects:
the thermal spraying powder uses tungsten carbide as a base material, chromium powder, manganese, nickel and modified aluminum borate whisker are added for matching, so that the wear resistance of the product is enhanced, the aluminum borate whisker is subjected to ultrasonic dispersion treatment by a hydrochloric acid solution, so that the dispersion degree and the activity of the aluminum borate whisker are improved, the aluminum borate whisker can be improved by a modification solution matched with sodium dodecyl benzene sulfonate, an ionic liquid, a sodium alginate solution and lanthanum nitrate, on one hand, the sodium dodecyl benzene sulfonate can provide an active effect, the sodium alginate solution improves the dispersion degree of raw materials, the lanthanum nitrate has rare earth active efficiency, the aluminum borate whisker can be improved by the modification solution matched with the ionic liquid, so that the interfacial effect and the reaction efficiency among the raw materials are improved, the wear resistance efficiency of the product is enhanced, the carbon nanotube composite modified magnesium oxide treatment solution uses a carbon nanotube modifier formed by matching the carbon nanotube with a phosphoric acid buffer solution, a silane coupling agent and chitosan, after the magnesium oxide is calcined, the activity is enhanced, the particle size is refined, and then the carbon nanotube modifier is subjected to coordination, the high specific surface area of the carbon nanotube bears and loads magnesium oxide, the sintered material is subjected to dispersion modification in the composite modified magnesium oxide treatment solution, so that the particle size can be refined, and the wear resistance of the product is enhanced, and then the product is ground step by step.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below with reference to specific embodiments, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The preparation method of the high wear-resistant thermal spraying powder of the embodiment comprises the following steps:
the method comprises the following steps: weighing raw materials: 30-40 parts of tungsten carbide, 4-10 parts of modified aluminum borate whisker, 2-6 parts of chromium powder, 1-4 parts of manganese, 1-3 parts of nickel and 45-55 parts of carbon nanotube composite modified magnesium oxide treatment solution;
step two: sequentially adding the tungsten carbide, the modified aluminum borate crystal whisker, the chromium powder, the manganese and the nickel raw materials in the step one into a stirrer, and stirring and mixing the raw materials fully, wherein the stirring speed is 1200-1500r/min, and the stirring time is 20-30min, so as to obtain a premix;
step three: feeding the premix into a sintering furnace for sintering treatment, wherein the sintering temperature is 600-700 ℃, the sintering time is 1-2h, and obtaining a sintering material after sintering;
step four: placing the sintered material in the carbon nano tube composite modified magnesium oxide treatment solution, stirring and dispersing, washing and drying after stirring;
step five: and (3) feeding the sintered material into a grinding machine for grinding, and sieving by 50-100 meshes to obtain the high-wear-resistance thermal spraying powder.
The preparation method of the modified aluminum borate whisker of the embodiment comprises the following steps:
s01: placing the aluminum borate whisker in 3-6 times of hydrochloric acid solution with the mass fraction of 5-9% for ultrasonic dispersion treatment, finishing ultrasonic treatment, washing with water, drying, and then performing proton irradiation treatment for later use;
s02: adding 5-10 parts of sodium dodecyl benzene sulfonate and 1-3 parts of ionic liquid into 20-30 parts of sodium alginate solution, and then adding 1-2 parts of lanthanum nitrate to obtain modified liquid;
s03: and (3) feeding the S01 product into 3-5 times of the modified liquid, stirring for 20-30min at 55-65 ℃, wherein the stirring speed is 500-1000r/min, and after stirring, washing and drying to obtain the modified aluminum borate whisker.
The power of ultrasonic dispersion treatment in the embodiment is 300-350W, and the ultrasonic time is 10-20min; the power of proton irradiation treatment is 100-200W, and the irradiation time is 30-40min.
The mass fraction of the sodium alginate solution in this example is 5-10%.
The ionic liquid of this example was 1-hexyl-3-methylimidazolium tetrafluoroborate.
In the fourth step of this embodiment, the rotation speed of the stirring dispersion treatment is 650-800r/min, the stirring time is 35-45min, and the stirring temperature is 55-65 ℃.
The preparation method of the carbon nanotube composite modified magnesium oxide treatment solution of the embodiment comprises the following steps:
s101: adding 5-10 parts of carbon nano tube into 10-20 parts of deionized water, adding phosphoric acid buffer solution, adjusting the pH value to 4.5, then adding 3-6 parts of silane coupling agent and 1-4 parts of chitosan, and fully stirring and mixing to obtain a carbon nano tube modifier;
s102: feeding the magnesium oxide into a calcining furnace for step-by-step calcination, and performing cold quenching treatment by adopting water at the temperature of-5 ℃ after the calcination is finished for later use;
s103: and (3) feeding the magnesium oxide of the S102 into the carbon nano tube modifier of the S101 in an amount which is 3-4 times that of the magnesium oxide, and fully stirring and mixing to obtain the carbon nano tube composite modified magnesium oxide treatment solution.
The silane coupling agent of this example was a silane coupling agent KH570.
The specific calcination method of the step-by-step calcination in this example is: calcining at 310-350 deg.C for 20-30min, heating to 400 deg.C at 1-3 deg.C/min, holding for 10-15min, tempering to 200-240 deg.C, and holding.
The tempering of this example was conducted at a rate of 2-5 deg.C/min.
Example 1.
The preparation method of the high wear-resistant thermal spraying powder of the embodiment comprises the following steps:
the method comprises the following steps: weighing raw materials: 30 parts of tungsten carbide, 4 parts of modified aluminum borate whisker, 2 parts of chromium powder, 1 part of manganese, 1 part of nickel and 45 parts of carbon nanotube composite modified magnesium oxide treatment liquid;
step two: sequentially adding the tungsten carbide, the modified aluminum borate crystal whisker, the chromium powder, the manganese and the nickel raw materials in the step one into a stirrer, and stirring and mixing fully, wherein the stirring speed is 1200r/min, and the stirring time is 20min, so as to obtain a premix;
step three: feeding the premix into a sintering furnace for sintering treatment, wherein the sintering temperature is 600 ℃, the sintering time is 1h, and obtaining a sintering material after sintering;
step four: placing the sintered material in the carbon nano tube composite modified magnesium oxide treatment solution, stirring and dispersing, washing and drying after stirring;
step five: the sintered material is fed into a grinder for grinding, and is sieved by 50 meshes to obtain the high-wear-resistance thermal spraying powder.
The preparation method of the modified aluminum borate whisker in the embodiment comprises the following steps:
s01: placing the aluminum borate whisker in 3 times of hydrochloric acid solution with the mass fraction of 5% for ultrasonic dispersion treatment, after the ultrasonic treatment, washing and drying the aluminum borate whisker, and then performing proton irradiation treatment for later use;
s02: adding 5 parts of sodium dodecyl benzene sulfonate and 1 part of ionic liquid into 20 parts of sodium alginate solution, and then adding 1 part of lanthanum nitrate to obtain modified liquid;
s03: and (3) feeding the S01 product into 3 times of the modification solution, stirring at 55 ℃ for 20min at the stirring speed of 500r/min, washing with water after stirring is finished, and drying to obtain the modified aluminum borate whisker.
The power of the ultrasonic dispersion treatment of the embodiment is 300W, and the ultrasonic time is 10min; the power of proton irradiation treatment is 100W, and the irradiation time is 30min.
The sodium alginate solution of this example was 5% by mass.
The ionic liquid of this example was 1-hexyl-3-methylimidazolium tetrafluoroborate.
In the fourth step of this example, the rotation speed of the stirring dispersion treatment is 650r/min, the stirring time is 35min, and the stirring temperature is 55 ℃.
The preparation method of the carbon nanotube composite modified magnesium oxide treatment fluid comprises the following steps:
s101: adding 5 parts of carbon nano tube into 10 parts of deionized water, adding a phosphoric acid buffer solution, adjusting the pH value to 4.5, then adding 3 parts of silane coupling agent and 1 part of chitosan, and stirring and mixing fully to obtain a carbon nano tube modifier;
s102: feeding the magnesium oxide into a calcining furnace for step-by-step calcination, and performing cold quenching treatment by adopting water at the temperature of-5 ℃ after the calcination is finished for later use;
s103: and (3) feeding the magnesium oxide of the S102 into 3 times of the carbon nano tube modifier of the S101, and fully stirring and mixing to obtain the carbon nano tube composite modified magnesium oxide treatment solution.
The silane coupling agent of this example was a silane coupling agent KH570.
The specific calcination method of the stepwise calcination in this example is: calcining at 310 deg.C for 20min, heating to 400 deg.C at 1 deg.C/min, holding for 10min, tempering to 200 deg.C, and holding.
The tempering of this example was conducted at a rate of 2 deg.C/min.
Example 2.
The preparation method of the high wear-resistant thermal spraying powder of the embodiment comprises the following steps:
the method comprises the following steps: weighing raw materials: 40 parts of tungsten carbide, 10 parts of modified aluminum borate whisker, 6 parts of chromium powder, 4 parts of manganese, 3 parts of nickel and 55 parts of carbon nanotube composite modified magnesium oxide treatment solution;
step two: sequentially adding the tungsten carbide, the modified aluminum borate crystal whisker, the chromium powder, the manganese and the nickel raw materials in the step one into a stirrer, and fully stirring and mixing the raw materials, wherein the stirring speed is 1500r/min, and the stirring time is 30min to obtain a premix;
step three: feeding the premix into a sintering furnace for sintering treatment, wherein the sintering temperature is 700 ℃, the sintering time is 2 hours, and obtaining a sintering material after sintering;
step four: placing the sintered material in the carbon nano tube composite modified magnesium oxide treatment solution, stirring and dispersing, washing and drying after stirring;
step five: and (3) feeding the sintered material into a grinding machine for grinding, and sieving by a 100-mesh sieve to obtain the high-wear-resistance thermal spraying powder.
The preparation method of the modified aluminum borate whisker in the embodiment comprises the following steps:
s01: placing the aluminum borate whisker in 6 times of hydrochloric acid solution with the mass fraction of 9% for ultrasonic dispersion treatment, after the ultrasonic treatment, washing and drying the aluminum borate whisker, and then performing proton irradiation treatment for later use;
s02: adding 10 parts of sodium dodecyl benzene sulfonate and 3 parts of ionic liquid into 30 parts of sodium alginate solution, and then adding 2 parts of lanthanum nitrate to obtain modified liquid;
s03: and (3) feeding the product S01 into 5 times of the modification solution, stirring at 65 ℃ for 30min at the stirring speed of 1000r/min, washing with water after the stirring is finished, and drying to obtain the modified aluminum borate whisker.
The power of the ultrasonic dispersion treatment in the embodiment is 350W, and the ultrasonic time is 20min; the power of proton irradiation treatment is 200W, and the irradiation time is 40min.
The mass fraction of the sodium alginate solution in this example was 10%.
The ionic liquid of this example was 1-hexyl-3-methylimidazolium tetrafluoroborate.
In the fourth step of this example, the rotation speed of the stirring dispersion treatment is 800r/min, the stirring time is 45min, and the stirring temperature is 65 ℃.
The preparation method of the carbon nanotube composite modified magnesium oxide treatment fluid comprises the following steps:
s101: adding 10 parts of carbon nano tube into 20 parts of deionized water, adding a phosphoric acid buffer solution, adjusting the pH value to 4.5, then adding 6 parts of silane coupling agent and 4 parts of chitosan, and stirring and mixing fully to obtain a carbon nano tube modifier;
s102: feeding the magnesium oxide into a calcining furnace for step-by-step calcination, and performing cold quenching treatment by adopting water at the temperature of-5 ℃ after the calcination is finished for later use;
s103: and (3) feeding the magnesium oxide of the S102 into the carbon nano tube modifier of the S101 in an amount which is 4 times that of the magnesium oxide, and fully stirring and mixing to obtain the carbon nano tube composite modified magnesium oxide treatment solution.
The silane coupling agent of this example was a silane coupling agent KH570.
The specific calcination method of the step-by-step calcination in this example is: calcining at 350 deg.C for 30min, heating to 400 deg.C at 3 deg.C/min, holding for 15min, tempering to 240 deg.C, and holding.
The tempering of this example was conducted at a rate of 5 deg.C/min.
Example 3.
The preparation method of the high wear-resistant thermal spraying powder of the embodiment comprises the following steps:
the method comprises the following steps: weighing raw materials: 35 parts of tungsten carbide, 7 parts of modified aluminum borate whisker, 4 parts of chromium powder, 2.5 parts of manganese, 2 parts of nickel and 50 parts of carbon nano tube composite modified magnesium oxide treatment liquid;
step two: sequentially adding the tungsten carbide, the modified aluminum borate crystal whisker, the chromium powder, the manganese and the nickel raw materials in the step one into a stirrer, and fully stirring and mixing the raw materials, wherein the stirring speed is 1350r/min, and the stirring time is 25min, so as to obtain a premix;
step three: feeding the premix into a sintering furnace for sintering treatment, wherein the sintering temperature is 650 ℃, the sintering time is 1.5h, and obtaining a sintering material after sintering;
step four: placing the sintered material in the carbon nano tube composite modified magnesium oxide treatment solution, stirring and dispersing, washing and drying after stirring;
step five: the sinter is fed into a grinder for grinding and then is sieved by a 75-mesh sieve, so that the high-wear-resistance thermal spraying powder is obtained.
The preparation method of the modified aluminum borate whisker of the embodiment comprises the following steps:
s01: firstly, placing the aluminum borate whisker in a hydrochloric acid solution with the mass fraction of 7% which is 4.5 times that of the aluminum borate whisker for ultrasonic dispersion treatment, after the ultrasonic treatment is finished, washing and drying the aluminum borate whisker, and then carrying out proton irradiation treatment for later use;
s02: adding 7.5 parts of sodium dodecyl benzene sulfonate and 2 parts of ionic liquid into 5 parts of sodium alginate solution, and then adding 1.5 parts of lanthanum nitrate to obtain modified liquid;
s03: and (3) feeding the product S01 into 4 times of the modification solution, stirring at the temperature of 60 ℃ for 25min at the stirring speed of 750r/min, washing with water after the stirring is finished, and drying to obtain the modified aluminum borate whisker.
The power of ultrasonic dispersion treatment in this embodiment is 325W, and the ultrasonic time is 15min; the power of proton irradiation treatment is 150W, and the irradiation time is 35min.
The mass fraction of the sodium alginate solution in this example was 7.5%.
The ionic liquid of this example was 1-hexyl-3-methylimidazolium tetrafluoroborate.
In the fourth step of this example, the rotation speed of the stirring dispersion treatment is 750r/min, the stirring time is 40min, and the stirring temperature is 60 ℃.
The preparation method of the carbon nanotube composite modified magnesium oxide treatment solution of the embodiment comprises the following steps:
s101: adding 7.5 parts of carbon nano tube into 15 parts of deionized water, adding a phosphoric acid buffer solution, adjusting the pH value to 4.5, then adding 4.5 parts of silane coupling agent and 2.5 parts of chitosan, and fully stirring and mixing to obtain a carbon nano tube modifier;
s102: feeding the magnesium oxide into a calcining furnace for step-by-step calcination, and performing cold quenching treatment by adopting water at the temperature of-5 ℃ after the calcination is finished for later use;
s103: and (3) feeding the magnesium oxide of the S102 into the carbon nano tube modifier of the S101 in an amount which is 3.5 times that of the magnesium oxide, and fully stirring and mixing to obtain the carbon nano tube composite modified magnesium oxide treatment solution.
The silane coupling agent of this example was a silane coupling agent KH570.
The specific calcination method of the step-by-step calcination in this example is: calcining at 330 deg.C for 25min, heating to 400 deg.C at 2 deg.C/min, holding for 12.5min, tempering to 230 deg.C, and holding.
The tempering of this example was conducted at a rate of 3.5 deg.C/min.
Comparative example 1.
The difference from example 3 is that no modified aluminum borate whiskers were added.
Comparative example 2.
The difference from the embodiment 3 is that the ionic liquid and the lanthanum nitrate are not added into the modification liquid in the preparation of the modified aluminum borate whisker.
Comparative example 3.
Different from the example 3, the treatment is not carried out by using the carbon nanotube composite modified magnesium oxide treatment solution.
Comparative example 4.
The difference from the example 3 is that the carbon nanotube raw material is not added into the carbon nanotube composite modified magnesium oxide treatment solution.
Comparative example 5.
Different from the example 3, the magnesium oxide in the preparation of the carbon nano tube composite modified magnesium oxide treating fluid is not subjected to step calcination.
The wear resistance of each product is evaluated by adopting a CETR-3 type friction wear testing machine, the load is 10N, the friction pair is a GCr15 steel ball with the diameter of 5mm, the friction frequency is 12Hz, the friction stroke is 3mm, the friction time is 80min, and the mass before and after the wear is weighed by an electronic balance to calculate the wear loss.
The results of measuring the properties of examples 1 to 3 and comparative examples 1 to 5 are as follows
| Amount of abrasion (mg) | |
| Example 1 | 2.5 |
| Example 2 | 2.4 |
| Example 3 | 2.1 |
| Comparative example 1 | 8.9 |
| Comparative example 2 | 6.2 |
| Comparative example 3 | 7.8 |
| Comparative example 4 | 7.3 |
| Comparative example 5 | 5.5 |
As can be seen from examples 1-3 and comparative examples 1-5, the product of example 3 of the present invention has excellent wear resistance;
the wear-resisting property of the product is obviously poor because the modified aluminum borate whisker is not added, and the wear-resisting property tends to be poor because the ionic liquid and the lanthanum nitrate are not added into the modified aluminum borate whisker;
in addition, the carbon nanotube composite modified magnesium oxide treatment solution can realize coordinated improvement on the wear resistance, the carbon nanotube is not added in the preparation of the carbon nanotube composite modified magnesium oxide treatment solution, the improvement effect of the product is poor, and the sectional heat treatment is not adopted for the magnesium oxide, so the wear resistance is poor; the carbon nano tube composite modified magnesium oxide treating fluid prepared by the preparation method has the most obvious improvement effect, and simultaneously can achieve the synergistic effect through the carbon nano tube composite modified magnesium oxide treating fluid and the modified aluminum borate whisker, the modified aluminum borate whisker is used as a matrix for improving the wear resistance, so that the overall wear resistance of the product is improved, and the carbon nano tube composite modified magnesium oxide treating fluid achieves the synergistic effect, so that the wear resistance efficiency of the product is further improved.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (10)
1. The preparation method of the high-wear-resistance thermal spraying powder is characterized by comprising the following steps of:
the method comprises the following steps: weighing raw materials: 30-40 parts of tungsten carbide, 4-10 parts of modified aluminum borate whisker, 2-6 parts of chromium powder, 1-4 parts of manganese, 1-3 parts of nickel and 45-55 parts of carbon nanotube composite modified magnesium oxide treatment solution;
step two: sequentially adding the tungsten carbide, the modified aluminum borate crystal whisker, the chromium powder, the manganese and the nickel raw materials in the step one into a stirrer, and stirring and mixing fully, wherein the stirring speed is 1200-1500r/min, and the stirring time is 20-30min, so as to obtain a premix;
step three: feeding the premix into a sintering furnace for sintering treatment, wherein the sintering temperature is 600-700 ℃, the sintering time is 1-2h, and obtaining a sintering material after sintering;
step four: placing the sintered material in the carbon nano tube composite modified magnesium oxide treatment solution, stirring and dispersing, washing and drying after stirring;
step five: the sintered material is fed into a grinder for grinding, and is sieved by 50-100 meshes to obtain the high-abrasion-resistance thermal spraying powder.
2. The method for preparing high wear resistance thermal spraying powder according to claim 1, wherein the modified aluminum borate whiskers are prepared by the following steps:
s01: placing the aluminum borate whisker in 3-6 times of hydrochloric acid solution with the mass fraction of 5-9% for ultrasonic dispersion treatment, finishing ultrasonic treatment, washing with water, drying, and then performing proton irradiation treatment for later use;
s02: adding 5-10 parts of sodium dodecyl benzene sulfonate and 1-3 parts of ionic liquid into 20-30 parts of sodium alginate solution, and then adding 1-2 parts of lanthanum nitrate to obtain modified liquid;
s03: and (3) feeding the S01 product into 3-5 times of the modification solution, stirring at the temperature of 55-65 ℃ for 20-30min at the stirring speed of 500-1000r/min, washing with water after the stirring is finished, and drying to obtain the modified aluminum borate whisker.
3. A method of preparing a high wear resistance thermal spray powder according to claim 2, wherein the power of the ultrasonic dispersion treatment is 300-350W, and the ultrasonic time is 10-20min; the power of proton irradiation treatment is 100-200W, and the irradiation time is 30-40min.
4. A preparation method of a high-wear-resistance hot spray powder according to claim 2, wherein the mass fraction of the sodium alginate solution is 5-10%.
5. A method of making a high abrasion thermal spray powder according to claim 2, wherein said ionic liquid is 1-hexyl-3-methylimidazolium tetrafluoroborate.
6. A preparation method of a high wear resistance thermal spraying powder according to claim 1, wherein in the fourth step, the rotation speed of the stirring dispersion treatment is 650-800r/min, the stirring time is 35-45min, and the stirring temperature is 55-65 ℃.
7. The preparation method of the high-wear-resistance thermal spraying powder according to claim 1, wherein the preparation method of the carbon nanotube composite modified magnesium oxide treatment liquid comprises the following steps:
s101: adding 5-10 parts of carbon nano tube into 10-20 parts of deionized water, adding a phosphoric acid buffer solution, adjusting the pH value to 4.5, then adding 3-6 parts of silane coupling agent and 1-4 parts of chitosan, and fully stirring and mixing to obtain a carbon nano tube modifier;
s102: feeding the magnesium oxide into a calcining furnace for step-by-step calcination, and performing cold quenching treatment by adopting water at the temperature of-5 ℃ after the calcination is finished for later use;
s103: and (3) feeding the magnesium oxide of the S102 into the carbon nano tube modifier of the S101 in an amount which is 3-4 times that of the magnesium oxide, and fully stirring and mixing to obtain the carbon nano tube composite modified magnesium oxide treatment solution.
8. A method of preparing a high wear resistance thermal spray powder in accordance with claim 7 wherein said silane coupling agent is KH570.
9. A method for preparing a high wear resistance hot sprayed powder according to claim 7 wherein the specific calcination method of the step calcination is: calcining at 310-350 deg.C for 20-30min, heating to 400 deg.C at 1-3 deg.C/min, holding for 10-15min, tempering to 200-240 deg.C, and holding.
10. A method of producing a highly wear resistant thermal spray powder according to claim 9 wherein said tempering is performed at a rate of 2-5 ℃/min.
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