CN107523782A - Molybdenum-base alloy surface oxidation-resistant coating and preparation method thereof - Google Patents
Molybdenum-base alloy surface oxidation-resistant coating and preparation method thereof Download PDFInfo
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- CN107523782A CN107523782A CN201610452630.1A CN201610452630A CN107523782A CN 107523782 A CN107523782 A CN 107523782A CN 201610452630 A CN201610452630 A CN 201610452630A CN 107523782 A CN107523782 A CN 107523782A
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- molybdenum
- base alloy
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- alloy surface
- 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
- C23C4/10—Oxides, borides, carbides, nitrides or silicides; Mixtures thereof
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- Plasma & Fusion (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Coating By Spraying Or Casting (AREA)
Abstract
This application discloses a kind of molybdenum-base alloy surface oxidation-resistant coating, and preparation method thereof, the method comprising the steps of：(1), using molybdenum powder and silica flour as raw material, according to molybdenum and the atomic ratio 1 of silicon:(2~3) mix, ball mill mixing 8~12 hours in ball mill；(2), batch mixing is placed in self-propagating high-temperature equipment and synthesizes molybdenum disilicide；(3) molybdenum disilicide, is broken into powder, then atomization drying is granulated, vacuum heat and classification are handled, and obtains powder feed；(4), molybdenum-base alloy is surface-treated, successively including sandblasting, ultrasonic wave cleaning, oil removing；(5), sprayed by air plasma spraying method on molybdenum-base alloy surface, obtain silicified molybdenum coating.The molybdenum disilicide layer that the present invention obtains on molybdenum-base alloy surface, there is good antioxygenic property, service life length, the diffusion between coating and matrix can be delayed.
Description
Technical field
The application is related to a kind of antioxidant coating, more particularly to a kind of molybdenum-base alloy surface oxidation-resistant coating
And preparation method thereof.
Background technology
Metal molybdenum and its alloy have the advantages that high intensity, high-melting-point, corrosion-resistant and wear-resistant, by with
In the alloy components and parts that manufacture warship, tank, firearms, rocket, satellite.In addition metal molybdenum and
Its alloy is also often used to manufacture the heater and structural material of high temperature furnace, such as in glass and refractory fibre work
Industry is used as the electrode and glass melting high-temperature structural material of smelting furnace, and electrode and smelting are used as in rare-earth industry
With stirring rod etc..
Although metal molybdenum and its alloy are the materials for preparing high-temperature furnace heating body and structural member well,
In air at more than 600 DEG C will vigorous oxidation, with the rise of temperature, the intensity of its product declines, damage
Consumption aggravation, performance are affected, and this seriously constrains the application of molybdenum and its alloy.At present both at home and abroad
Substantial amounts of research is carried out to the antioxidant defense method of metal and alloy, the results showed that improve metal and conjunction
The main path of the high-temperature oxidation resistance of gold has alloying protection and face coat protection.Alloying is typically
To lose intensity and processing characteristics as cost, and add Effect on Mechanical Properties very little of the coating to alloy, and energy
Inoxidizability is significantly improved, experiment is proved to be practicable approach.
In actual use, in order to ensure molybdenum and its alloy use at high temperature, and increase the service life,
Economize on resources, reduce cost, reduce the purpose of pollution, it is necessary to which high-temperature oxidation resistant protection is carried out to it.Cause
This, it is most important to develop the high-temperature oxidation resistant coating to match therewith.
The content of the invention
It is an object of the invention to provide a kind of molybdenum-base alloy surface oxidation-resistant coating and preparation method thereof, with
Overcome deficiency of the prior art.
To achieve the above object, the present invention provides following technical scheme：
The embodiment of the present application discloses a kind of molybdenum-base alloy surface oxidation-resistant coating, including using atmospheric plasma
Spraying process is formed at the silicified molybdenum coating on molybdenum-base alloy surface.
Accordingly, disclosed herein as well is a kind of method for preparing silicified molybdenum coating on molybdenum-base alloy surface,
Including step：
(1), using molybdenum powder and silica flour as raw material, according to molybdenum and the atomic ratio 1 of silicon:(2~3) mix, in ball
Ball mill mixing 8~12 hours in grinding machine；
(2), batch mixing is placed in self-propagating high-temperature equipment and synthesizes molybdenum disilicide；
(3) molybdenum disilicide, is broken into powder, then atomization drying granulation, vacuum heat and classification
Processing, obtain powder feed；
(4), molybdenum-base alloy is surface-treated, successively including sandblasting, ultrasonic wave cleaning, oil removing；
(5), sprayed by air plasma spraying method on molybdenum-base alloy surface, obtain molybdenum disilicide
Coating.
Preferably, the method for silicified molybdenum coating is prepared on molybdenum-base alloy surface above-mentioned, the step
Suddenly in (4), blasting method includes：In pressure it is 0.6~0.8MPa with the corundum sand that granularity is 0.7~1.0mm
Compressed air under carry out blasting treatment, with remove the oxide skin on molybdenum-base alloy surface and cause matrix surface
Reach roughening.
Preferably, the method for silicified molybdenum coating is prepared on molybdenum-base alloy surface above-mentioned, the step
Suddenly in (5), air plasma spraying method meets condition：30~32kW of power, 40~45l/min of argon flow amount,
100~110mm of spray distance.
Compared with prior art, the advantage of the invention is that：The present invention molybdenum-base alloy surface obtain two
Molybdenum silicide layer, there is good antioxygenic property, service life length, can delay between coating and matrix
Diffusion.
Embodiment
The present invention is described further by the following example：, can be more preferably geographical according to following embodiments
The solution present invention.However, as it will be easily appreciated by one skilled in the art that specific material described by embodiment
The present invention is merely to illustrate than, process conditions and its result, without should be also without limitation on claims
In the described in detail present invention.
The method that air plasma spraying method prepares silicified molybdenum coating on molybdenum-base alloy surface：
(1), using molybdenum powder and silica flour as raw material, according to molybdenum and the atomic ratio 1 of silicon:3 mixing, in ball mill
Ball mill mixing 12 hours；
(2), batch mixing is placed in self-propagating high-temperature equipment and synthesizes molybdenum disilicide；
(3) molybdenum disilicide, is broken into powder, then atomization drying granulation, vacuum heat and classification
Processing, obtain powder feed；
(4), molybdenum-base alloy is surface-treated, successively including sandblasting, ultrasonic wave cleaning, oil removing；
(5), sprayed by air plasma spraying method on molybdenum-base alloy surface, obtain molybdenum disilicide
Coating.
After 1200 DEG C aoxidize 25 hours, coating surface is complete, is tightly combined with matrix, is carried to matrix
Good anti-oxidation protection is supplied.
In step (4), blasting method includes：The corundum sand for being 0.7~1.0mm with granularity is in pressure
Blasting treatment is carried out under 0.6~0.8MPa compressed air, to remove the oxide skin on molybdenum-base alloy surface and make
Obtain matrix surface and reach roughening.
In step (3), molybdenum dioxide is crushed by planetary ball mill, rotating speed 300rpm, ball material
Than 6:1,6 hours time.
In step (3), atomization drying, which is granulated, meets condition：Centrifugal atomizer rotating speed 20000rpm, charging
25 DEG C of temperature, 300 DEG C of inlet temperature is dried, dry 100 DEG C of outlet temperature.
In step (3), vacuum heat condition meets：Room temperature is incubated 100 minutes to 500 DEG C,
10 DEG C/min of heating rate；1200 DEG C are continuously heating to, is incubated 60 minutes, 6 DEG C/min of heating rate；
It is cooled to room temperature.
In step (5), air plasma spraying method meets condition：30~32kW of power, argon flow amount
40~45l/min, 100~110mm of spray distance.
Finally, it is to be noted that, term " comprising ", "comprising" or its any other variant are intended to
Nonexcludability includes, so that process, method, article or equipment including a series of elements are not
Only include those key elements, but also the other element including being not expressly set out, or it is this also to include
Kind of process, method, article or the intrinsic key element of equipment.
Claims (4)
1. a kind of molybdenum-base alloy surface oxidation-resistant coating, it is characterised in that including being sprayed using atmospheric plasma
Coating is formed at the silicified molybdenum coating on molybdenum-base alloy surface.
A kind of 2. method for preparing silicified molybdenum coating on molybdenum-base alloy surface, it is characterised in that including step
Suddenly：
(1), using molybdenum powder and silica flour as raw material, according to molybdenum and the atomic ratio 1 of silicon:(2~3) mix, in ball
Ball mill mixing 8~12 hours in grinding machine；
(2), batch mixing is placed in self-propagating high-temperature equipment and synthesizes molybdenum disilicide；
(3) molybdenum disilicide, is broken into powder, then atomization drying granulation, vacuum heat and classification
Processing, obtain powder feed；
(4), molybdenum-base alloy is surface-treated, successively including sandblasting, ultrasonic wave cleaning, oil removing；
(5), sprayed by air plasma spraying method on molybdenum-base alloy surface, obtain molybdenum disilicide
Coating.
3. the method according to claim 2 for preparing silicified molybdenum coating on molybdenum-base alloy surface, its
It is characterised by：In the step (4), blasting method includes：With the Brown Alundum that granularity is 0.7~1.0mm
Sand carries out blasting treatment in the case where pressure is 0.6~0.8MPa compressed air, to remove molybdenum-base alloy surface
Oxide skin simultaneously causes matrix surface to reach roughening.
4. the method according to claim 2 for preparing silicified molybdenum coating on molybdenum-base alloy surface, its
It is characterised by：In the step (5), air plasma spraying method meets condition：30~32kW of power,
40~45l/min of argon flow amount, 100~110mm of spray distance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610452630.1A CN107523782A (en) | 2016-06-21 | 2016-06-21 | Molybdenum-base alloy surface oxidation-resistant coating and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610452630.1A CN107523782A (en) | 2016-06-21 | 2016-06-21 | Molybdenum-base alloy surface oxidation-resistant coating and preparation method thereof |
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| CN107523782A true CN107523782A (en) | 2017-12-29 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108330429A (en) * | 2018-02-11 | 2018-07-27 | 西安理工大学 | A kind of molybdenum disilicide composite coating and preparation method thereof |
| CN110079775A (en) * | 2019-04-30 | 2019-08-02 | 江苏理工学院 | A kind of molybdenum alloy surface MoSi2The preparation method of coating |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1844441A (en) * | 2006-04-30 | 2006-10-11 | 华北电力大学 | Method for in-situ preparation of superfine crystal molybdenum disilicide coating |
| CN102041499A (en) * | 2009-10-18 | 2011-05-04 | 中国科学院上海硅酸盐研究所 | Molybdenum disilicide composite coating and preparation method thereof |
-
2016
- 2016-06-21 CN CN201610452630.1A patent/CN107523782A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1844441A (en) * | 2006-04-30 | 2006-10-11 | 华北电力大学 | Method for in-situ preparation of superfine crystal molybdenum disilicide coating |
| CN102041499A (en) * | 2009-10-18 | 2011-05-04 | 中国科学院上海硅酸盐研究所 | Molybdenum disilicide composite coating and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 汪异: "钼基合金高温抗氧化涂层的制备及其性能研究", 《中国博士学位论文全文数据库 工程科技Ⅰ辑》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108330429A (en) * | 2018-02-11 | 2018-07-27 | 西安理工大学 | A kind of molybdenum disilicide composite coating and preparation method thereof |
| CN110079775A (en) * | 2019-04-30 | 2019-08-02 | 江苏理工学院 | A kind of molybdenum alloy surface MoSi2The preparation method of coating |
| CN110079775B (en) * | 2019-04-30 | 2021-06-15 | 江苏理工学院 | Molybdenum alloy surface MoSi2Method for producing a coating |
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