CN102560197A - Alloy powder for high-temperature marine corrosion resistant thermal spraying and preparation method thereof - Google Patents
Alloy powder for high-temperature marine corrosion resistant thermal spraying and preparation method thereof Download PDFInfo
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- CN102560197A CN102560197A CN2011104215032A CN201110421503A CN102560197A CN 102560197 A CN102560197 A CN 102560197A CN 2011104215032 A CN2011104215032 A CN 2011104215032A CN 201110421503 A CN201110421503 A CN 201110421503A CN 102560197 A CN102560197 A CN 102560197A
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Abstract
The invention discloses alloy powder for high-temperature-resistant marine corrosion thermal spraying and a preparation method thereof, wherein the alloy powder is prepared by a vacuum melting-inert gas atomization method, and the alloy powder comprises the following components: chromium Cr: 20-32 wt%, aluminum Al: 3.0-10 wt%, Si: 1-5.0 wt%, yttrium Y: 0.3-2.0 wt%, cobalt Co: the balance; the oxygen content is less than or equal to 600 ppm. The granularity is as follows: 12 to 150 μm and a main body of 28 to 53 μm. The performance of the coating after supersonic flame spraying is adopted reaches: after a damp-heat test for 1000h, the coating does not peel off (GJB 150.9); after 1000h neutral salt spray corrosion, the coating does not peel off (GJB 150.11); after high-temperature oxidation corrosion (100 hours in the air at 1000 ℃), the weight gain is less than or equal to 0.01mg/cm2 & h (HB 5258-2000). The high sphericity, homogenized, low oxygen content CoCrAlSiY alloy powder is suitable for supersonic spraying.
Description
Technical field
The present invention relates to the coated material technical field, relate in particular to a kind of high temperature resistant marine corrosion used for hot spraying powdered alloy and preparation method.
Background technology
At present; In the coated material technical field; MCrAlY (M:Co, Ni or Co+Ni) alloy has excellent high-temperature mechanical property and antioxidant property, is that the most frequently used superalloy is used coated material at present, and it is even that this material has spraying back coating structure; Characteristics such as bonding strength is high, and resistance to high temperature oxidation, abrasion resistance properties are superior.Superalloy powder as this type of high-performance coating material; Have multicomponent, composition evenly, trend such as oxygen level and foreign matter content be low; As except that alloying element Ni, Co, Cr, Al, Y; Adopt elements such as Ta, Hf, B, Re, Si simultaneously, oxygen and foreign matter content are very low, spraying back coating structure evenly, be combined, heat resisting temperature is high and anti-oxidant polishing machine is superior.
In the prior art, the preparation of CoCrAlSiY alloy powder mainly take to reunite sintering process or atmosphere atomization process obtains, and the powder shape of reunion sintering preparation is irregular, uneven components and oxygen level are high; And the powder sphericity of big aerosolization preparation is relatively poor, and composition is wayward, foreign matter content and oxygen level are high.In the process of above-mentioned two kinds of powdered alloys, the powder powder utilization is low in spraying process, and oxide content is higher in the coating, and anchoring strength of coating is poor, has significantly reduced the resistance to high temperature oxidation and the corrosion resistance of coating.
Summary of the invention
The purpose of this invention is to provide a kind of high temperature resistant marine corrosion with used for hot spraying powdered alloy and preparation method, thereby the high sphericity that is fit to supersonic spray coating is provided, homogenizes, the CoCrAlSiY powdered alloy of low oxygen content.
The objective of the invention is to realize through following technical scheme:
A kind of used for hot spraying powdered alloy, this powdered alloy component are cobalt chromium aluminum-silicon-yttrium CoCrAlSiY, and concrete quality composition is:
Chromium Cr:20～32wt%, aluminium Al:3.0～10wt%, silicon Si:1～5.0wt%, yttrium Y:0.3～2.0wt%, cobalt Co: surplus; Granularity is: 12～150 μ m.
The present invention also provides a kind of preparation method of used for hot spraying powdered alloy, and said method comprises:
1) gets raw material by following mass ratio: chromium Cr:20～32wt%, aluminium Al:3.0～10wt%, silicon Si:1～5.0wt%, yttrium Y:0.3～2.0wt%, cobalt Co: surplus;
2) said raw material is put into the vacuum melting crucible, the processing through vacuum induction melting, inert gas atomizer obtains the CoCrAlSiY powdered alloy;
3) said CoCrAlSiY powdered alloy is sieved or classification, prepare powder size and be: the CoCrAlSiY powdered alloy of 12～150 μ m.
The processing of said inert gas atomizer specifically comprises:
Utilize Medium frequency induction that melting equipment is heated, be warming up to 1250～1850 ℃, be incubated 6～25 minutes, the mode that is employed in refining under the vacuum and inert gas atomizer prepares the CoCrAlSiY powdered alloy.
The rare gas element of said atomizing is nitrogen or argon gas, and the atomizing cone angle is 45～75 °, and atomizing pressure is 1～4.0MPa.
Technical scheme by the invention described above provides can find out that said preparation method at first gets raw material by following mass ratio: chromium Cr:20～32wt%, aluminium Al:3.0～10wt%, silicon Si:1～5.0wt%, yttrium Y:0.3～2.0wt%, cobalt Co: surplus; Then said raw material is put into the vacuum melting crucible, the processing through vacuum induction melting, inert gas atomizer obtains the CoCrAlSiY powdered alloy; Said CoCrAlSiY powdered alloy is being sieved or classification, preparing powder size and be: the CoCrAlSiY powdered alloy of 12～150 μ m.Through above-mentioned preparation method the high sphericity that is fit to supersonic spray coating just can be provided, homogenize, the CoCrAlSiY powdered alloy of low oxygen content.
Description of drawings
In order to be illustrated more clearly in the technical scheme of the embodiment of the invention; The accompanying drawing of required use is done to introduce simply in will describing embodiment below; Obviously, the accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skill in the art; Under the prerequisite of not paying creative work, can also obtain other accompanying drawings according to these accompanying drawings.
Fig. 1 is the said preparing method's of the embodiment of the invention a schematic flow sheet;
Fig. 2 the process flow sheet realized by the embodiment of the invention of act specific examples.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is carried out clear, intactly description, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on embodiments of the invention, those of ordinary skills belong to protection scope of the present invention not making the every other embodiment that is obtained under the creative work prerequisite.
The component of the described used for hot spraying powdered alloy of the embodiment of the invention is chromium nickel aluminum-silicon-yttrium CoCrAlSiY, and concrete quality composition is:
Chromium Cr:20～32wt%, aluminium Al:3.0～10wt%, silicon Si:1～5.0wt%, yttrium Y:0.3～2.0wt%, cobalt Co: surplus;
Its particulate granularity is: 12～150 microns μ m, the main body granularity is in 28～53 microns mu m ranges.Wherein, granularity refers to the particulate size, and the granularity of spherical particles is represented with diameter usually; The main body granularity refers to that this size range powder accounts for more than the 50wt% of total amount.
The preparation method of above-mentioned powdered alloy is at first to get raw metal or its alloy; Add in the smelting pot by certain order of addition(of ingredients); Under vacuum, it is melted, treat to use after alloying evenly the low-pressure inert gas atomizing to be powdered alloy, will combine accompanying drawing that the embodiment of the invention is done to describe in detail further below with certain power; Be illustrated in figure 1 as the said preparing method's of the embodiment of the invention schematic flow sheet, said preparation method comprises step:
Step 11: get the corresponding metal raw material by mass ratio.
In this step, get raw material by following mass ratio, chromium Cr:20～32wt%, aluminium Al:3.0～10wt%, silicon Si:1～5.0wt%, yttrium Y:0.3～2.0wt%, cobalt Co: surplus.
The another kind amount of getting mode can be: chromium Cr:20～32wt%, aluminium Al:3.0～10wt%, silicon Si:1～5.0wt%, yttrium Y:0.3～2.0wt%, cobalt Co and the returning charge of cobalt chromium aluminum-silicon-yttrium CoCrAlSiY alloy: surplus.
Step 12: raw material is put into the vacuum melting crucible, and the processing through vacuum induction melting, inert gas atomizer obtains the CoCrAlSiY powdered alloy.
In this step; After raw material is put into the vacuum melting crucible; Adopt vacuum melting technique and restricted, the atomize circular seam type nozzle (the atomizing cone angle is 45～75 °) of cone angle, the method for low-pressure inert gas atomizing prepares the CoCrAlSiY powdered alloy greatly; In the processing of inert gas atomizer, concrete processing parameter is:
(1) adopts Medium frequency induction to the heating of inert gas atomizer equipment, be warming up to 1550～1750 ℃, be incubated 6～25 minutes.
(2) the inertia atomizing gas is nitrogen or argon gas, and the atomizing cone angle is 45～75 °, and atomizing pressure is 1～4.0MPa.
Step 13: said CoCrAlSiY powdered alloy is sieved or classification, prepare powder size and be: the CoCrAlSiY powdered alloy of 12～150 μ m.
Thus, just can prepare the CoCrAlSiY powdered alloy through above-mentioned steps.
In addition; After preparing the CoCrAlSiY powdered alloy; Can also further adopt the CoCrAlSiY powdered alloy to prepare the CoCrAlSiY coating, specifically can adopt HVAF technology, the processing parameter of its preparation CoCrAlSiY coating be: kerosene oil flow 20～28l/h; Oxygen flow 850～1000L/min; Spray distance is 300mm～400mm.
By the coating of above-mentioned CoCrAlSiY alloy powder material preparation, its bonding strength >=60MPa, behind the 1000h humid heat test, coating does not have and peels off (GJB150.9); After 1000h neutral salt spray corrosion, coating does not have and peels off (GJB150.11); Behind high temperature oxidation and corrosion (in 1000 ℃ of air 100 hours), weightening finish is smaller or equal to 0.01mg/cm2h (HB5258-2000).
Above-mentioned preparation method, the powdered alloy preparation flow is simple, and alloying constituent is easy to control, and the powder good sphericity, composition is even, oxygen level is low, is fit to HVAF, sea salt corrosion that coating is high temperature resistant.
Come above-mentioned preparation process is described in detail with concrete embodiment below, be illustrated in figure 2 as the process flow sheet that specific examples that present embodiment is lifted is realized, among Fig. 2:
Get metallic substance by mass ratio: Cr:27wt%, Al:8wt%, Y:0.8wt%, Si:2wt%, Co: surplus.
Metallic substance is put into vacuum atomizing equipment, utilize Frequency Induction Heating, when temperature is heated to 1600 ℃; Be incubated 10～20 minutes; After treating alloy liquid homogenizing, utilize the rare gas element argon gas to atomize, the atomization process parameter is: atomizing pressure is 1.8MPa; The spraying gun angle is 60 °, obtains the CoCrAlSiY powdered alloy.
Above-mentioned CoCrAlSiY powdered alloy is carried out final acquisition of classification be fit to used for hot spraying CoCrAlSiY powdered alloy, granularity is: 18～104 μ m, main body is in 28～53 mu m ranges.
Can also adopt HVAF CoCrAlSiY powdered alloy then, spraying parameter is: kerosene oil flow 26L/h; Oxygen flow 900L/min; Spray distance 350mm.Thereby obtain coating by above-mentioned CoCrAlSiY alloy powder material preparation.
Anchoring strength of coating is 65MPa, and behind the 1000h humid heat test, coating does not have and peels off (GJB150.9); After 1000h neutral salt spray corrosion, coating does not have and peels off (GJB150.11); Behind high temperature oxidation and corrosion (in 1000 ℃ of air 100 hours), weightening finish 0.005mg/cm2h (HB5258-2000).
In sum, through above-mentioned preparation method the high sphericity that is fit to supersonic spray coating just can be provided, homogenize, the CoCrAlSiY powdered alloy of low oxygen content.
The above; Be merely the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, any technician who is familiar with the present technique field is in the technical scope that the present invention discloses; The variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claims.
Claims (5)
1. a high temperature resistant marine corrosion used for hot spraying powdered alloy is characterized in that, this powdered alloy component is cobalt chromium aluminum-silicon-yttrium CoCrAlSiY, and concrete quality composition is:
Chromium Cr:20～32wt%, aluminium Al:3.0～10wt%, silicon Si:1～5.0wt%, yttrium Y:0.3～2.0wt%, cobalt Co: surplus;
The particulate granularity is: 12～150 microns μ m, the main body granularity is in 28～53 microns μ m.
2. the preparation method of a high temperature resistant marine corrosion used for hot spraying powdered alloy is characterized in that, said preparation method comprises:
1) gets raw material by following mass ratio: chromium: 20～32wt%, aluminium: 3.0～10.0wt%, silicon: 1～5.0wt%, yttrium: 0.3～2.0wt%, cobalt: surplus;
2) said raw material is put into the vacuum melting crucible, the processing through vacuum induction melting, inert gas atomizer obtains the CoCrAlSiY powdered alloy;
3) said CoCrAlSiY powdered alloy is sieved or classification, prepare powder size and be: the CoCrAlSiY powdered alloy of 12～150 microns μ m.
3. the preparation method of used for hot spraying powdered alloy as claimed in claim 2 is characterized in that, the processing of said inert gas atomizer specifically comprises:
Utilize Medium frequency induction that melting equipment is heated, be warming up to 1250～1850 ℃, be incubated 6～25 minutes, the mode that is employed in refining under the vacuum and inert gas atomizer prepares the CoCrAlSiY powdered alloy.
4. the preparation method of used for hot spraying powdered alloy as claimed in claim 2 is characterized in that, the rare gas element of said atomizing is nitrogen or argon gas, and the atomizing cone angle is 45～75 °, and atomizing pressure is 1～2.2MPa.
5. a CoCrAlSiY coating that adopts the HVAF technology to prepare by 1 said powdered alloy is characterized in that, this Bond Strength of Coating >=60MPa, and behind the 1000h humid heat test, coating does not have and peels off; After 1000h neutral salt spray corrosion, coating does not have and peels off; Behind 100 hours the high temperature oxidation and corrosion, weightening finish is smaller or equal to 0.01mg/cm2h in 1000 ℃ of air.
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| CN103056352A (en) * | 2012-12-04 | 2013-04-24 | 中国人民解放军装甲兵工程学院 | High-entropy alloy powder material for supersonic spraying and manufacturing method thereof |
| CN103073940A (en) * | 2013-01-25 | 2013-05-01 | 北矿新材科技有限公司 | Preparation method of salt-spray-corrosion-resistant hard-surface coating material for thermal spraying |
| CN104018016A (en) * | 2014-05-14 | 2014-09-03 | 贵研铂业股份有限公司 | Preparation method of CoCrAlYSi alloy target |
| CN104227008A (en) * | 2014-09-23 | 2014-12-24 | 西安瑞鑫科金属材料有限责任公司 | Method for preparing titanium-zirconium-copper-nickel alloy braze powder |
| CN107406919A (en) * | 2015-08-25 | 2017-11-28 | 韩国机械研究院 | Machinability, inoxidizability, corrosion resistance and the outstanding Co Cr class dental alloys of taste |
| CN114247893A (en) * | 2022-02-24 | 2022-03-29 | 西南医科大学附属医院 | Method for manufacturing metal powder and application thereof |
| CN114411081A (en) * | 2021-11-19 | 2022-04-29 | 中国航发北京航空材料研究院 | Yttrium-hafnium-doped aluminum-cobalt-chromium-iron-nickel-silicon high-entropy thermal barrier bonding layer |
| CN114570933A (en) * | 2020-11-30 | 2022-06-03 | 中国科学院金属研究所 | Preparation method of high-molybdenum high-silicon cobalt-based hot spraying alloy powder |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103056352A (en) * | 2012-12-04 | 2013-04-24 | 中国人民解放军装甲兵工程学院 | High-entropy alloy powder material for supersonic spraying and manufacturing method thereof |
| CN103056352B (en) * | 2012-12-04 | 2015-09-09 | 中国人民解放军装甲兵工程学院 | For the high-entropy alloy powder material and preparation method thereof of supersonic spray coating |
| CN103073940A (en) * | 2013-01-25 | 2013-05-01 | 北矿新材科技有限公司 | Preparation method of salt-spray-corrosion-resistant hard-surface coating material for thermal spraying |
| CN103073940B (en) * | 2013-01-25 | 2015-05-20 | 北矿新材科技有限公司 | Preparation method of salt-spray-corrosion-resistant hard-surface coating material for thermal spraying |
| CN104018016A (en) * | 2014-05-14 | 2014-09-03 | 贵研铂业股份有限公司 | Preparation method of CoCrAlYSi alloy target |
| CN104227008A (en) * | 2014-09-23 | 2014-12-24 | 西安瑞鑫科金属材料有限责任公司 | Method for preparing titanium-zirconium-copper-nickel alloy braze powder |
| CN104227008B (en) * | 2014-09-23 | 2016-05-18 | 西安瑞鑫科金属材料有限责任公司 | A kind of preparation method of titanium zirconium German silver solder powder |
| CN107406919A (en) * | 2015-08-25 | 2017-11-28 | 韩国机械研究院 | Machinability, inoxidizability, corrosion resistance and the outstanding Co Cr class dental alloys of taste |
| CN107406919B (en) * | 2015-08-25 | 2020-05-08 | 韩国机械研究院 | Co-Cr dental alloy having excellent machinability, oxidation resistance, corrosion resistance and aesthetic properties |
| CN114570933A (en) * | 2020-11-30 | 2022-06-03 | 中国科学院金属研究所 | Preparation method of high-molybdenum high-silicon cobalt-based hot spraying alloy powder |
| CN114411081A (en) * | 2021-11-19 | 2022-04-29 | 中国航发北京航空材料研究院 | Yttrium-hafnium-doped aluminum-cobalt-chromium-iron-nickel-silicon high-entropy thermal barrier bonding layer |
| CN114247893A (en) * | 2022-02-24 | 2022-03-29 | 西南医科大学附属医院 | Method for manufacturing metal powder and application thereof |
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Application publication date: 20120711 |