CN105420668B - A kind of nickel-base alloy oozes cobalt process - Google Patents
A kind of nickel-base alloy oozes cobalt process Download PDFInfo
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- CN105420668B CN105420668B CN201510818193.6A CN201510818193A CN105420668B CN 105420668 B CN105420668 B CN 105420668B CN 201510818193 A CN201510818193 A CN 201510818193A CN 105420668 B CN105420668 B CN 105420668B
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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
- C23C10/00—Solid state diffusion of only metal elements or silicon into metallic material surfaces
- C23C10/28—Solid state diffusion of only metal elements or silicon into metallic material surfaces using solids, e.g. powders, pastes
- C23C10/34—Embedding in a powder mixture, i.e. pack cementation
- C23C10/36—Embedding in a powder mixture, i.e. pack cementation only one element being diffused
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Abstract
The present invention relates to hot-end component surfacecti proteon field, specially a kind of nickel-base alloy oozes cobalt process.After the process is sufficiently mixed according to a certain percentage by cobalt powder, nickel yittrium alloy powder, alumina powder, activator (ammonium chloride and ammonium iodide), penetration enhancer is made after being roasted at a certain temperature, certain thickness penetration enhancer is spread first in container bottom, next puts the workpiece in container, then container is filled up with penetration enhancer again, finally the container for loading penetration enhancer and workpiece is put into heat-treatment furnace, heat-treatment furnace, which is raised to a certain temperature, and is kept the temperature after appropriate time can obtain required oozing cobalt layers in workpiece surface.The characteristics of heat and corrosion resistant that the present invention can increase substantially workpiece for cobalt element acts on carries out the development that this oozes cobalt technology, the cobalt content of workpiece surface can be made to can reach 60% or more by adjusting infiltration layer formula and technological parameter, so that workpiece is improved 3 times or more of service life in heat erosion environment, and improves the use reliability of workpiece.
Description
Technical field
The present invention relates to hot-end component surfacecti proteon field, specially a kind of nickel-base alloy oozes cobalt process.
Background technology
Currently, having aluminising, aluminising silicon etc., these technologies that can improve the anti-of hot-end component in hot-end component surface protection technique
Performance is protected, has outstanding performance in the oxidation resistance for improving hot-end component, can play a role in terms of heat and corrosion resistant, but improve
Limited (improving 1 times or so).Therefore, in the field that some require heat and corrosion resistant performance high, designers consider to use cobalt-based material
Material, because cobalt element can increase substantially the heat and corrosion resistant effect of workpiece, but manufacturing cost will also increase considerably.
Invention content
It is difficult to meet the requirements at the higher level of protection workpiece heat and corrosion resistant in view of current other infiltration layer technologies, the object of the invention exists
The characteristics of oozing cobalt process in a kind of nickel-base alloy of offer, the heat and corrosion resistant effect of workpiece can be increased substantially for cobalt element
The development that this oozes cobalt technology is carried out, the cobalt content of workpiece surface can be made to can reach by adjusting infiltration layer formula and technological parameter
60% or more, so that workpiece is improved 3 times or more of service life in heat erosion environment, and improve the use reliability of workpiece.
The technical scheme is that：
A kind of nickel-base alloy oozes cobalt process, is as follows：
1) penetration enhancer powder prepares
It is by weight by cobalt powder, nickel yittrium alloy powder and the alumina powder after drying (2~5)：1：The ratio of (2~4) is put
Enter ball grinder, then by after drying ammonium chloride and ammonium iodide be put into ball by 1~3% and the 3~5% of above-mentioned powder total weight respectively
Grinding jar carries out ball milling, forms penetration enhancer powder；
2) penetration enhancer roasts
After ball milling drying, step 1) penetration enhancer powder is incorporated in the heat-treatment furnace of argon gas protection and is warming up to 600 DEG C with stove,
950 DEG C~1000 DEG C heat preservation 6h~7h are continuously heating to after heat preservation 3.0h~3.5h；Then with being furnace-cooled to after 600 DEG C in air
It is cooling, the penetration enhancer for oozing cobalt is just obtained after coming out of the stove；
3) workpiece is filled
First by step 2) penetration enhancer and the ammonium chloride of the penetration enhancer weight 0.5~2% and the iodine of the penetration enhancer weight 1~3%
Change ammonium to be sufficiently mixed, part mixing penetration enhancer is poured into container, the penetration enhancer thickness of container bottom is made to be not less than 100mm, then will
The workpiece that oil removing was cleaned is put on penetration enhancer, is then poured into container with penetration enhancer, and ensures that the penetration enhancer thickness at the top of workpiece is not small
In 100mm；
4) prepared by infiltration layer
The container of loading penetration enhancer and workpiece is put into the heat-treatment furnace of argon gas protection and is warming up to 600 DEG C with stove, heat preservation
950 DEG C~1000 DEG C heat preservation 4h~5h are continuously heating to after 3.0h~3.5h；Then container is taken out with after being furnace-cooled to 600 DEG C
It is cooled to room temperature in air, required infiltration layer is obtained in workpiece surface.
The nickel-base alloy oozes cobalt process, cobalt content ranging from 16wt%~65wt% in infiltration layer.
The nickel-base alloy oozes cobalt process, and one layer of cobalt-base alloys is formed on nickel-base alloy surface.
The nickel-base alloy oozes cobalt process, and in step 1), ammonium chloride, ammonium iodide, alumina powder are put into baking oven
2h is at least dried at a temperature of 120~160 DEG C；Cobalt powder, nickel yittrium alloy powder are put into baking oven at least to be dried at a temperature of 80 DEG C~100 DEG C
2h。
The nickel-base alloy oozes cobalt process, in step 1), penetration enhancer powder ball milling 2h or more in ball grinder, and ball milling
Penetration enhancer powder afterwards is put into baking oven at least dries 2h at a temperature of 80 DEG C~100 DEG C, until drying.
The nickel-base alloy oozes cobalt process, and in step 3), the workpiece in container is not less than 50mm with workpiece interval,
Workpiece is not less than 100mm with chamber wall interval.
Advantages of the present invention and advantageous effect are：
1, the present invention is after being sufficiently mixed according to a certain percentage by cobalt powder, nickel yittrium alloy powder, alumina powder, activator,
Penetration enhancer is made after being roasted at a certain temperature, certain thickness penetration enhancer is spread first in container bottom, secondly puts workpiece
Enter in container, then fill up container with penetration enhancer again, finally the container for loading penetration enhancer and workpiece is put into heat-treatment furnace, at heat
Reason stove is raised to a certain temperature and keeps the temperature after appropriate time and can obtain required oozing cobalt layers in workpiece surface.The present invention can be used for gold
The surfacecti proteon for belonging to material, the corrosion resistance to improving metal material surface has functions that uniqueness, in field of metal material protection
It is with a wide range of applications.
2, workpiece surface is made to penetrate into cobalt element, the advantageous hot corrosion resistance for improving workpiece using the present invention.
3, the present invention can make workpiece surface form one layer of cobalt-base alloys by adjusting penetration enhancer ingredient.
4, it in the hot-end component of part, can be achieved to substitute cobalt-base alloys with nickel-base alloy using the present invention, reduction is manufactured into
This.
Description of the drawings
Fig. 1 is that workpiece investment oozes cobalt photomacrograph.
Fig. 2 is the metallograph that workpiece investment oozes cobalt.
Fig. 3 is the metallograph that workpiece investment oozes cobalt.
Specific implementation mode
In specific implementation process, involved chemical reagent is purchased in market.By weight percentage, workpiece material mainly at
Point 15.4~16.3%Cr, 10.0~11.5%Co, 4.7~5.9%W, 1.6~2.3%Mo, 2.85~3.3%Al, 4.2~
5.0%Ti, remaining is Ni.It is light microscope, model that instrument detects in tissue topography：OLYMPUS BX51M.Infiltration layer at
It is electron scanning mirror, model that sorting, which surveys instrument,：ZEISS SUPRA55.
In the following, the present invention is described in further detail in conjunction with the accompanying drawings and embodiments.
Embodiment 1
1) it is 4 by weight by cobalt powder, nickel yittrium alloy powder and the alumina powder after drying：1：3 ratio is put into ball grinder,
Again by after drying ammonium chloride and ammonium iodide respectively by the 2% of above-mentioned powder total weight and 4% be put into ball grinder carry out ball milling, shape
At penetration enhancer powder.
2) after ball milling drying, step 1) penetration enhancer powder is incorporated in the heat-treatment furnace of argon gas protection and is warming up to 600 with stove
DEG C, it is continuously heating to 970 DEG C of heat preservation 6.5h after keeping the temperature 3.0h.Then with being furnace-cooled to 600 DEG C after, be cooled to room temperature in air,
Just obtain oozing the penetration enhancer of cobalt after coming out of the stove.
3) first step 2) penetration enhancer and the ammonium chloride of the penetration enhancer weight 1% and the ammonium iodide of the penetration enhancer weight 2% are filled
Divide mixing, part mixing penetration enhancer is poured into container, the penetration enhancer thickness of container bottom is made to be not less than 100mm, it is then that oil removing is clear
Washed workpiece is put on penetration enhancer, is then poured into container with penetration enhancer, and ensures that the penetration enhancer thickness at the top of workpiece is not less than
100mm。
4) container of loading penetration enhancer and workpiece is put into the heat-treatment furnace of argon gas protection and is warming up to 600 DEG C with stove, heat preservation
970 DEG C of heat preservation 4.5h are continuously heating to after 3.0h.Then container taking-up is cooled to room in air with after being furnace-cooled to 600 DEG C
Temperature obtains the infiltration layer of Fig. 2 in workpiece surface.By weight percentage, the Contents of Main Components in infiltration layer be 60.77%Co,
27.09%Ni, 4.53%Cr, 1.34%Ti, 3.29%W, 1.24%Al, 0.91%Mo, 0.83%Y.
As shown in Figure 1, can be seen that from workpiece macrograph relatively uniform using the process workpiece surface colour；Such as
Shown in Fig. 2, it can be seen that diffusion layer organization is relatively uniform, and infiltration layer is divided into inside and outside two layers from infiltration layer metallographic structure pattern, it is relatively more equal
Even densification, outer layer cobalt content is high, and mainly the solid solution and compound of cobalt, internal layer are diffusion layer, mainly the change of refractory metal
Close object.
Embodiment 2
1) it is 2 by weight by cobalt powder, nickel yittrium alloy powder and the alumina powder after drying：1：5 ratio is put into ball grinder,
Again by after drying ammonium chloride and ammonium iodide respectively by 2% and 4% amount of above-mentioned powder total weight be put into ball grinder carry out ball
Mill forms penetration enhancer powder.
2) after ball milling drying, step 1) penetration enhancer powder is incorporated in the heat-treatment furnace of argon gas protection and is warming up to 600 with stove
DEG C, it is continuously heating to 980 DEG C of heat preservation 6h after keeping the temperature 3.5h.Then it with room temperature is cooled in air after being furnace-cooled to 600 DEG C, comes out of the stove
Just obtain oozing the penetration enhancer of cobalt afterwards.
3) first by step 2) penetration enhancer and the ammonium chloride of the penetration enhancer weight 1.5% and the iodate of the penetration enhancer weight 1.5%
Ammonium is sufficiently mixed, and part mixing penetration enhancer is poured into container, so that the penetration enhancer thickness of container bottom is not less than 100mm, then will remove
The workpiece that oil cleaned is put on penetration enhancer, is then poured into container with penetration enhancer, and ensures that the penetration enhancer thickness at the top of workpiece is not less than
100mm。
4) container of loading penetration enhancer and workpiece is put into the heat-treatment furnace of argon gas protection and is warming up to 600 DEG C with stove, heat preservation
980 DEG C of heat preservation 4h are continuously heating to after 3.5h.Then container taking-up is cooled to room temperature in air with after being furnace-cooled to 600 DEG C,
The infiltration layer of Fig. 3 is obtained in workpiece surface.By weight percentage, the Contents of Main Components in infiltration layer be 16.94%Co,
57.28%Ni, 14.07%Cr, 3.84%Ti, 4.47%W, 2.39%Al, 0.94%Mo, 0.07%Y.As shown in figure 3, from oozing
Layer metallographic structure pattern can be seen that diffusion layer organization is relatively uniform, and infiltration layer is divided into inside and outside two layers, relatively uniform densification.
Embodiment the result shows that, can reach 60% or more using cobalt content in the infiltration layer prepared of the present invention, infiltration layer due to
The infiltration of cobalt element enhances the barrier propterty of infiltration layer, extends the annealing time of infiltration layer, due to the protective effect of infiltration layer, makes
The corrosion and heat resistant ability of workpiece improves 3 times or more.The present invention can make workpiece surface form one layer of cobalt-based by adjusting penetration enhancer ingredient
Alloy, therefore cobalt-base alloys can be substituted with nickel-base alloy using the technology, the anticorrosion effect of component is equally played, but can be big
The reduction manufacturing cost of amplitude.
Claims (1)
1. a kind of nickel-base alloy oozes cobalt process, which is characterized in that be as follows：
1）It is 4 by weight by cobalt powder, nickel yittrium alloy powder and the alumina powder after drying：1：3 ratio is put into ball grinder, then will
Ammonium chloride and ammonium iodide after drying are put into ball grinder by the 2% of above-mentioned powder total weight and 4% respectively and carry out ball milling, form penetration enhancer
Powder；
2）After ball milling drying, by step 1）Penetration enhancer powder is incorporated in the heat-treatment furnace of argon gas protection and is warming up to 600 DEG C with stove, protects
970 DEG C of heat preservation 6.5h are continuously heating to after warm 3.0h；Then with being furnace-cooled to 600 DEG C after, room temperature is cooled in air, after coming out of the stove
Just obtain oozing the penetration enhancer of cobalt；
3）First by step 2）Penetration enhancer is sufficiently mixed with the ammonium chloride of the penetration enhancer weight 1% and the ammonium iodide of the penetration enhancer weight 2%,
Part mixing penetration enhancer is poured into container, the penetration enhancer thickness of container bottom is made to be not less than 100mm, the work for then cleaning oil removing
Part is put on penetration enhancer, is then poured into container with penetration enhancer, and ensures that the penetration enhancer thickness at the top of workpiece is not less than 100mm；
4）The container of loading penetration enhancer and workpiece is put into the heat-treatment furnace of argon gas protection and is warming up to 600 DEG C with stove, keeps the temperature 3.0h
After be continuously heating to 970 DEG C heat preservation 4.5h；Then container taking-up is cooled to room temperature in air with after being furnace-cooled to 600 DEG C,
Workpiece surface obtains infiltration layer；By weight percentage, the component content in infiltration layer be 60.77%Co, 27.09%Ni, 4.53%Cr,
1.34%Ti、3.29%W、1.24%Al、0.91%Mo、0.83%Y；
Find out that diffusion layer organization is relatively uniform from infiltration layer metallographic structure pattern, infiltration layer is divided into inside and outside two layers, even compact, outer layer cobalt
Content is high, and mainly the solid solution and compound of cobalt, internal layer are diffusion layer, mainly the compound of refractory metal.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510818193.6A CN105420668B (en) | 2015-11-20 | 2015-11-20 | A kind of nickel-base alloy oozes cobalt process |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510818193.6A CN105420668B (en) | 2015-11-20 | 2015-11-20 | A kind of nickel-base alloy oozes cobalt process |
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| CN105420668A CN105420668A (en) | 2016-03-23 |
| CN105420668B true CN105420668B (en) | 2018-08-14 |
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| CN106222607B (en) * | 2016-08-29 | 2019-05-07 | 中航动力股份有限公司 | A kind of infiltration cobalt aluminium penetration enhancer and method |
Citations (2)
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| CN102424948A (en) * | 2011-10-24 | 2012-04-25 | 北京航空航天大学 | Method for preparing CoAlNi coating on Ni-based high-temperature alloy by embedding infiltration process |
| CN102485934A (en) * | 2010-12-01 | 2012-06-06 | 沈阳黎明航空发动机(集团)有限责任公司 | Method for preparing hollow blade inner chamber diffusion layer with high temperature resistance, oxidation resistance and corrosion resistance |
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2015
- 2015-11-20 CN CN201510818193.6A patent/CN105420668B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102485934A (en) * | 2010-12-01 | 2012-06-06 | 沈阳黎明航空发动机(集团)有限责任公司 | Method for preparing hollow blade inner chamber diffusion layer with high temperature resistance, oxidation resistance and corrosion resistance |
| CN102424948A (en) * | 2011-10-24 | 2012-04-25 | 北京航空航天大学 | Method for preparing CoAlNi coating on Ni-based high-temperature alloy by embedding infiltration process |
Non-Patent Citations (1)
| Title |
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| K488合金铝及钴铝渗层的结构与高温氧化和热腐蚀行为;李玉春;《中国优秀硕士学位论文全文数据库（电子期刊）》;20110515(第05期);第B022-81页 * |
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Address after: 110043 Dong TA street, Dadong District, Shenyang, Liaoning Province, No. 6 Patentee after: Chinese Hangfa Shenyang Liming Aero engine limited liability company Address before: 110043 Dong TA street, Dadong District, Shenyang, Liaoning Province, No. 6 Patentee before: Liming Aeroplane Engine (Group) Co., Ltd., Shenyang City |
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