CN103691938A - Surface alloying method for metal coated powder - Google Patents
Surface alloying method for metal coated powder Download PDFInfo
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- CN103691938A CN103691938A CN201410001634.9A CN201410001634A CN103691938A CN 103691938 A CN103691938 A CN 103691938A CN 201410001634 A CN201410001634 A CN 201410001634A CN 103691938 A CN103691938 A CN 103691938A
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Abstract
A surface alloying method of metal-coated powder relates to a method for preparing composite powder by alloying the surface of metal-coated powder. The method is characterized in that: the preparation method comprises the steps of mechanically mixing or agglomerating and coating the metal-coated powder and the alloying powder, and then carrying out heat treatment in a vacuum or atmosphere protective environment. The particle size of the prepared powder is 45-200 mu m, and the mass percentage of alloying elements is 1-10%. The composite powder prepared by the method can be used in the fields of aviation, aerospace and the like as a thermal spraying material. The preparation process of the powder is simple and feasible, and can realize large-scale production.
Description
Technical field
The present invention relates to a kind of composite powder preparation method who metallic cover powder is carried out to surface alloying, belong to thermal spraying material preparing technical field.The powder that adopts above method to prepare is particularly suitable as hot spraying powder powder material, can be widely used in the fields such as Aeronautics and Astronautics, automobile, machinery, boats and ships.Meanwhile, above method is equally applicable to the alloying preparation of the cladding powder of other any similar structures.
Background technology
In order to meet the needs of the different purposes of coating, thermal spray powder material is all greatly improved in recent years on composition, properity, and preparation method is also updating.For coating is had concurrently as performances such as non-oxidizability, corrosion resistance, wearabilities simultaneously, thermal spraying often adopts composite powder as sprayed on material, and according to the composition of selecting in powder and preparation method, the performance that coating shows is difference to some extent also.
Hot spray powder is mainly divided into alloy, pottery, the type such as compound, and wherein composite powder is divided into again cladded type, Conglobation type, reunion cladded type etc.The preparation method of cladded type powder is mainly divided into physics and chemistry method, industrial common employing chemical method is prepared, as the reduction of hydro-thermal pressurized hydrogen, chemical plating, galvanoplastic etc., composite powder clad prepared by chemical method is single metal, is difficult to obtain the excellent properties of alloy.Agglomeration process mainly adopts the method for adding additives mechanical mixture.And the method that reunion cladded type powder mainly refers to adopt mechanical mixture to reunite is prepared the composite powder of clad structure.Adopt agglomeration process to prepare composite powder simple to operate, production scale is controlled, but owing to adopting binding agent mechanical mixture, is difficult to avoid being scattered of fine powder.
Summary of the invention
The object of the invention is the deficiency for existing metallic cover powder performance, a kind of method of metallic cover powder being carried out to alloying is provided, prepare alloy-coated composite powder, mainly for the alloying of the metallic elements such as the aluminium alloying of the metallic cover type powder such as nickel cladding powder, cobalt cladding powder and chromium alloying.This method has not only been avoided being scattered because of the fine powder that adhesion strength causes not, can also make to form micro metallurgic bonding between metallic element, and metallic element can be interpenetrated, and is evenly distributed, and is conducive to the raising of coating performance.
The object of the invention is to be achieved through the following technical solutions: metallic cover powder surface alloying process, it is characterized in that, comprise the following steps:
(1) metal dust of metallic cover powder and alloy element is carried out to mechanical mixture in proportion and obtain mixed-powder;
Or
Metallic cover powder mixed with binding agent and stir, after metallic cover powder is fully wetting, adding the metal dust of alloy element fully to stir, then drying and obtain reunion powder;
(2) mixed-powder or the reunion powder that step (1) are obtained are heat-treated, and heat-treating atmosphere is vacuum or nitrogen protection or argon shield or hydrogen shield;
(3) powder after step (2) heat treatment is cooling, broken, screening, obtains alloy-coated powder.
In some embodiments, prepared alloy-coated powder size is 45～200 μ m, and alloy element quality percentage composition is 1～10%.
In some embodiments, described alloy element is one or more in metallic aluminium, chromium, and its powder size is 30nm～20 μ m.
In some embodiments, step (2) heat treatment parameter is as follows: when alloy element is aluminium, temperature is 600～1250 ℃, and temperature retention time is 0.5～72 hour; When alloy element is chromium, temperature is 750～1300 ℃, and temperature retention time is 0.5～72 hour; When alloy element is aluminium, chromium mixture, temperature is 700～1300 ℃, and temperature retention time is 0.5～72 hour.
In some embodiments, described metallic cover powder is any one in nickel bag bentonite, nickel bag diatomite, nickel bag graphite, nickel bag tungsten carbide, nickel package alumina, nickel bag carborundum, cobalt coated tungsten carbide and other nickel, cobalt or other metallic cover powder.
In some embodiments, the granularity of described metallic cover powder is 45～200 μ m, and the quality percentage composition of clad metal is 30～90%.
In some embodiments, step (1) is when preparing reunion powder, and bake out temperature is 70～190 ℃.
In some embodiments, step (1) is when preparing reunion powder, and binding agent is a kind of in polyvinyl alcohol, the first and second glue, polyvinylpyrrolidone or sodium carboxymethylcellulose.
In some embodiments, step (1) is when preparing reunion powder, and binding agent addition is 1-10wt%.
Method provided by the present invention has the following advantages: technical process is simple, and process stabilizing easily forms large-scale production, can be used for preparing multiple alloying cladding powder.Adopt the alloy-coated powder of preparation in this way, can make the outer field alloying component of cladded type powder form micro metallurgic bonding, distributed components, in conjunction with fine and close, avoid fine powder to be scattered, powder thermospraying performance is good, and metallic element is in conjunction with even compact, and prepared coating non-oxidizability, corrosion resistance are good.
Accompanying drawing explanation:
Accompanying drawing is the composite powder pattern of nickel bag bentonite surface alloying aluminium.
The specific embodiment:
Below in conjunction with accompanying drawing, the present invention will be further described.
Embodiment 1
Getting 100g granularity is 45～150 μ m; the superfine aluminium power that the nickel bag bentonite powder that the quality percentage composition of nickel is 65% is 2～10 μ m with 10g granularity mixes; the high temperature sintering furnace that mixed-powder is placed in to high-purity hydrogen protection is heat-treated; heat treatment temperature is 900 ℃, and heat treatment time is 2h.Cooling after heat treatment, broken, screening, the coated bentonite powder pattern of resulting nickel alumin(i)um alloy as shown in drawings.
Embodiment 2
Getting 100g granularity is 45～200 μ m; nickel bag diatomite powder and the 10g granularity that the quality percentage composition of nickel is 70% is that the ultra-fine chromium powder of 1～2 μ m mixes; the high temperature sintering furnace that mixed-powder is placed in to high-purity argon gas protection is heat-treated; heat treatment temperature is 1200 ℃; heat treatment time is 2h, cooling after heat treatment, broken, screening.
Embodiment 3
Getting 100g granularity is 45～200 μ m, the Nickel coated graphite that the quality percentage composition of nickel is 75%, add the polyvinyl alcohol of 1wt% mix and stir, after Nickel coated graphite is fully wetting, adding 5g granularity is that the superfine aluminium power of 30～200nm fully stirs, and then dries and obtains reunion powder, being placed in vacuum high-temperature sintering stove heat-treats, heat treatment temperature is 600 ℃, and heat treatment time is 72h, cooling after heat treatment, broken, screening.
Embodiment 4
Getting 100g granularity is 45～200 μ m; the nickel bag tungsten-carbide powder that the quality percentage composition of nickel is 30%; add the first and second glue of 10wt% mix and stir; after nickel bag tungsten-carbide powder is fully wetting; adding 5g granularity is that the superfine aluminium power of 30～200nm and ultra-fine chromium powder that 5g granularity is 30～200nm fully stir; then dry and obtain reunion powder; being placed in high pure nitrogen protection high temperature sintering furnace heat-treats; heat treatment temperature is 700 ℃; heat treatment time is 48h, cooling after heat treatment, broken, screening.
Embodiment 5
Getting 100g granularity is 45～200 μ m, the nickel-coated alumina powder that the quality percentage composition of nickel is 90%, add the polyvinyl alcohol of 5wt% mix and stir, after nickel-coated alumina powder is fully wetting, adding 5g granularity is that the ultra-fine chromium powder of 30～200nm fully stirs, and then dries and obtains reunion powder, being placed in vacuum high-temperature sintering stove heat-treats, heat treatment temperature is 800 ℃, and heat treatment time is 60h, cooling after heat treatment, broken, screening.
Embodiment 6
Getting 100g granularity is 45～200 μ m, the nickel bag silicon carbide powder that the quality percentage composition of nickel is 50%, add the polyvinylpyrrolidone of 5wt% mix and stir, after nickel bag silicon carbide powder is fully wetting, adding 5g granularity is that the superfine aluminium power of 5～20 μ m fully stirs, and then dries and obtains reunion powder, being placed in vacuum high-temperature sintering stove heat-treats, heat treatment temperature is 1250 ℃, and heat treatment time is 2h, cooling after heat treatment, broken, screening.
Embodiment 7
Getting 100g granularity is 45～200 μ m, the cobalt coated tungsten carbide powder that the quality percentage composition of cobalt is 30%, add the sodium carboxymethylcellulose of 8wt% mix and stir, after cobalt coated tungsten carbide powder is fully wetting, adding 5g granularity is that the ultra-fine chromium powder of 5～20 μ m fully stirs, and then dries and obtains reunion powder, being placed in vacuum high-temperature sintering stove heat-treats, heat treatment temperature is 1300 ℃, and heat treatment time is 6h, cooling after heat treatment, broken, screening.
Claims (9)
1. metallic cover powder surface alloying process, is characterized in that, comprises the following steps:
(1) metal dust of metallic cover powder and alloy element is carried out to mechanical mixture in proportion and obtain mixed-powder;
Or
Metallic cover powder mixed with binding agent and stir, after metallic cover powder is fully wetting, adding the metal dust of alloy element fully to stir, then drying and obtain reunion powder;
(2) mixed-powder or the reunion powder that step (1) are obtained are heat-treated, and heat-treating atmosphere is vacuum or nitrogen protection or argon shield or hydrogen shield;
(3) powder after step (2) heat treatment is cooling, broken, screening, obtains alloy-coated powder.
2. method according to claim 1, is characterized in that, prepared alloy-coated powder size is 45～200 μ m, and alloy element quality percentage composition is 1～10%.
3. method according to claim 1, is characterized in that, described alloy element is one or more in metallic aluminium, chromium, and its powder size is 30nm～20 μ m.
4. method according to claim 3, is characterized in that, step (2) heat treatment parameter is as follows: when alloy element is aluminium, temperature is 600～1250 ℃, and temperature retention time is 0.5～72 hour; When alloy element is chromium, temperature is 750～1300 ℃, and temperature retention time is 0.5～72 hour; When alloy element is aluminium, chromium mixture, temperature is 700～1300 ℃, and temperature retention time is 0.5～72 hour.
5. method according to claim 1, it is characterized in that, described metallic cover powder is any one in nickel bag bentonite, nickel bag diatomite, nickel bag graphite, nickel bag tungsten carbide, nickel package alumina, nickel bag carborundum, cobalt coated tungsten carbide and other nickel, cobalt or other metallic cover powder.
6. method according to claim 1, is characterized in that, the granularity of described metallic cover powder is 45～200 μ m, and the quality percentage composition of clad metal is 30～90%.
7. method according to claim 1, is characterized in that, step (1) is when preparing reunion powder, and bake out temperature is 70～190 ℃.
8. method according to claim 1, is characterized in that, step (1) is when preparing reunion powder, and binding agent is a kind of in polyvinyl alcohol, the first and second glue, polyvinylpyrrolidone or sodium carboxymethylcellulose.
9. method according to claim 1, is characterized in that, step (1) is when preparing reunion powder, and binding agent addition is 1-10wt%.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105458438A (en) * | 2015-12-11 | 2016-04-06 | 江苏阳明船舶装备制造技术有限公司 | Wrapping material for round metal component surface modification and preparing and welding method |
| CN105642885A (en) * | 2016-03-30 | 2016-06-08 | 西安交通大学 | Thermal spraying self-bonding metal alloy powder with coated composite structure |
| CN105689702A (en) * | 2016-01-29 | 2016-06-22 | 河南理工大学 | Aluminum-coated graphite composite powder, aluminum-graphite composite comprising composite powder and preparation method thereof |
| CN105773448A (en) * | 2016-05-24 | 2016-07-20 | 广东工业大学 | Metallic bond abrasive product and preparation method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3254970A (en) * | 1960-11-22 | 1966-06-07 | Metco Inc | Flame spray clad powder composed of a refractory material and nickel or cobalt |
| US3914507A (en) * | 1970-03-20 | 1975-10-21 | Sherritt Gordon Mines Ltd | Method of preparing metal alloy coated composite powders |
| CN1436623A (en) * | 2002-02-06 | 2003-08-20 | 北京矿冶研究总院 | Composite nickel-in-aluminum powder coated with ultramicro or nanometer aluminum powder |
| CN101003089A (en) * | 2006-11-27 | 2007-07-25 | 北京矿冶研究总院 | Composite powder coated with ultramicro or nanometer metal powder and preparation method thereof |
| CN102890993A (en) * | 2011-07-18 | 2013-01-23 | 天津蹊径动力技术有限公司 | Soft magnetic iron powder core manufactured by aluminum coated oxidation method |
| CN103247402A (en) * | 2013-05-20 | 2013-08-14 | 哈尔滨工业大学 | Composite soft magnetic material and preparation method |
-
2014
- 2014-01-01 CN CN201410001634.9A patent/CN103691938A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3254970A (en) * | 1960-11-22 | 1966-06-07 | Metco Inc | Flame spray clad powder composed of a refractory material and nickel or cobalt |
| US3914507A (en) * | 1970-03-20 | 1975-10-21 | Sherritt Gordon Mines Ltd | Method of preparing metal alloy coated composite powders |
| CN1436623A (en) * | 2002-02-06 | 2003-08-20 | 北京矿冶研究总院 | Composite nickel-in-aluminum powder coated with ultramicro or nanometer aluminum powder |
| CN101003089A (en) * | 2006-11-27 | 2007-07-25 | 北京矿冶研究总院 | Composite powder coated with ultramicro or nanometer metal powder and preparation method thereof |
| CN102890993A (en) * | 2011-07-18 | 2013-01-23 | 天津蹊径动力技术有限公司 | Soft magnetic iron powder core manufactured by aluminum coated oxidation method |
| CN103247402A (en) * | 2013-05-20 | 2013-08-14 | 哈尔滨工业大学 | Composite soft magnetic material and preparation method |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105458438A (en) * | 2015-12-11 | 2016-04-06 | 江苏阳明船舶装备制造技术有限公司 | Wrapping material for round metal component surface modification and preparing and welding method |
| CN105689702A (en) * | 2016-01-29 | 2016-06-22 | 河南理工大学 | Aluminum-coated graphite composite powder, aluminum-graphite composite comprising composite powder and preparation method thereof |
| CN105689702B (en) * | 2016-01-29 | 2018-09-21 | 河南理工大学 | Aluminium packet Graphite Composite Powder, the aluminum-graphite composite and preparation method thereof comprising the composite granule |
| CN105642885A (en) * | 2016-03-30 | 2016-06-08 | 西安交通大学 | Thermal spraying self-bonding metal alloy powder with coated composite structure |
| CN105773448A (en) * | 2016-05-24 | 2016-07-20 | 广东工业大学 | Metallic bond abrasive product and preparation method thereof |
| CN105773448B (en) * | 2016-05-24 | 2019-01-15 | 广东工业大学 | A kind of metallic bond grinding tool and preparation method thereof |
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