CN106521405B - A kind of penetration enhancer and its application method of the modification of nickel-base alloy surface - Google Patents
A kind of penetration enhancer and its application method of the modification of nickel-base alloy surface Download PDFInfo
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- CN106521405B CN106521405B CN201610937420.1A CN201610937420A CN106521405B CN 106521405 B CN106521405 B CN 106521405B CN 201610937420 A CN201610937420 A CN 201610937420A CN 106521405 B CN106521405 B CN 106521405B
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- 239000003961 penetration enhancing agent Substances 0.000 title claims abstract description 47
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 31
- 239000000956 alloy Substances 0.000 title claims abstract description 31
- 238000000034 method Methods 0.000 title claims abstract description 19
- 230000004048 modification Effects 0.000 title description 4
- 238000012986 modification Methods 0.000 title description 4
- 239000003623 enhancer Substances 0.000 claims abstract description 58
- 230000035515 penetration Effects 0.000 claims abstract description 58
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 47
- 229910052593 corundum Inorganic materials 0.000 claims abstract description 47
- 229910001845 yogo sapphire Inorganic materials 0.000 claims abstract description 47
- 230000008595 infiltration Effects 0.000 claims abstract description 19
- 238000001764 infiltration Methods 0.000 claims abstract description 19
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 12
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 11
- 229910018138 Al-Y Inorganic materials 0.000 claims description 47
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 29
- 238000001035 drying Methods 0.000 claims description 21
- 239000003513 alkali Substances 0.000 claims description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 20
- 239000002585 base Substances 0.000 claims description 15
- 238000004140 cleaning Methods 0.000 claims description 15
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 12
- 239000002131 composite material Substances 0.000 claims description 12
- 238000002360 preparation method Methods 0.000 claims description 11
- 239000000565 sealant Substances 0.000 claims description 10
- 238000007789 sealing Methods 0.000 claims description 10
- 238000004321 preservation Methods 0.000 claims description 7
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 5
- 229910052710 silicon Inorganic materials 0.000 claims description 5
- 239000010703 silicon Substances 0.000 claims description 5
- 239000003643 water by type Substances 0.000 claims description 5
- 239000003054 catalyst Substances 0.000 claims description 4
- 239000000945 filler Substances 0.000 claims description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 3
- 238000000227 grinding Methods 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- 230000007797 corrosion Effects 0.000 abstract description 13
- 238000005260 corrosion Methods 0.000 abstract description 13
- 239000011159 matrix material Substances 0.000 abstract description 4
- 239000011651 chromium Substances 0.000 description 13
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 9
- 238000000498 ball milling Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 6
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 5
- 230000003647 oxidation Effects 0.000 description 5
- 238000007254 oxidation reaction Methods 0.000 description 5
- 239000004411 aluminium Substances 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 229910052759 nickel Inorganic materials 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 238000005406 washing Methods 0.000 description 3
- 238000005275 alloying Methods 0.000 description 2
- VNNRSPGTAMTISX-UHFFFAOYSA-N chromium nickel Chemical compound [Cr].[Ni] VNNRSPGTAMTISX-UHFFFAOYSA-N 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 229910052571 earthenware Inorganic materials 0.000 description 2
- 229910001120 nichrome Inorganic materials 0.000 description 2
- 238000002407 reforming Methods 0.000 description 2
- 210000000582 semen Anatomy 0.000 description 2
- 229910000601 superalloy Inorganic materials 0.000 description 2
- 229910052727 yttrium Inorganic materials 0.000 description 2
- 229910001005 Ni3Al Inorganic materials 0.000 description 1
- 229910000943 NiAl Inorganic materials 0.000 description 1
- NPXOKRUENSOPAO-UHFFFAOYSA-N Raney nickel Chemical compound [Al].[Ni] NPXOKRUENSOPAO-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000003026 anti-oxygenic effect Effects 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- 235000006708 antioxidants Nutrition 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- C23C10/18—Solid state diffusion of only metal elements or silicon into metallic material surfaces using liquids, e.g. salt baths, liquid suspensions
- C23C10/26—Solid state diffusion of only metal elements or silicon into metallic material surfaces using liquids, e.g. salt baths, liquid suspensions more than one element being diffused
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemically Coating (AREA)
Abstract
The infiltration layer and its application, the penetration enhancer, including Al Y penetration enhancers and Cr Y penetration enhancers being modified the present invention relates to a kind of nickel-base alloy surface high temperature resisting corrosion resisting, in percentage by weight, the group of Al Y penetration enhancers becomes：10%~15%Al, 1%~2%Y2O3, 6%~10%NH4Cl, surplus Al2O3；The group of Cr Y penetration enhancers becomes：12%~18%Cr, 1%~2%Y2O3, 6%~10%NH4Cl, surplus Al2O3.Cr Al Y compisite seeping layers are prepared on nickel-base alloy surface using the achievable two-step method of the present invention, its corrosive nature of the alloy obtained improves 35 times compared with matrix alloy.
Description
Technical field
It is modified the present invention relates to metal surface properties modification more particularly to a kind of nickel-base alloy surface high temperature resisting corrosion resisting
Infiltration layer and its application method.
Background technology
DZ125 nickel-base alloys are one of current higher directional solidification nickel-base high-temperature alloys of China's performance level, are had good
Good medium and high temperature comprehensive performance and excellent thermal fatigue property, but its heat and corrosion resistant ability is poor, especially for engine and
When gas turbine blades, since it is in high temperature big load and Cl-、SO2It works under the harsh environment of equal corrosive mediums, it is made easily to send out
The problems such as raw oxidation, abrasion and heat erosion.
To improve the high temperature resisting corrosion resisting of alloy, two ways is commonly used：1) Integral alloy adds various alloy members
Element designs new alloy system；2) alloy surface modifying technology, including surface alloying and coating technology.Integral alloy skill
Though art can improve the high temperature resisting corrosion resisting performance of nickel-base alloy, since it mostly occurs in greatly surface to the destruction of material,
While improving above-mentioned performance, often the mechanical property of material entirety is adversely affected.Such as, chromium content is high
DZ38G has excellent corrosion and heat resistant, but its mechanical property is substantially less than the lower DZ125 of chromium content.Therefore, improve nickel
Based alloy is anti-oxidant, anti-friction is worn and the optimal path of hot corrosion resistance is surface modification treatment, utilizes existing failure
Mechanism and the achievement of alloying effect research rationally design the ingredient of surface reforming layer, are modified by various surfaces as guidance
Technology forms the surface reforming layer with superperformance in alloy surface, while the performance of basis material also being enable completely to protect
It stays.
The study found that chromium/aluminium (Cr/Al) compound coating has the spy that fusing point is high, thermal stability is good, corrosion resistance is excellent
Point is suitable for the high temperature resisting corrosion resisting protection of high temperature alloy：Chromium in infiltration layer can promote its surface that aluminium selective oxidation, shape occurs
At Al2O3Film is effectively improved the antioxygenic property of aluminium infiltration layer, improves its adhesion and high temperature oxidation resistance between matrix, reduces
Form the content of critical aluminium needed for protectiveness pellumina；Meanwhile the chromium in infiltration layer can form Diffusion Barrier, reduce infiltration layer and base
Phase counterdiffusion between body.In addition, rare earth element yttrium (Y) can improve the compactness of coating and its binding force with matrix, reduces and close
The oxidation rate of gold, improves the anti-strip ability of oxidation film.
Currently, ooze method by the diffusion of two steps prepares the Cr-Al-Y of high temperature resisting corrosion resisting on DZ125 nickel base superalloys surface
The technology of compisite seeping layer still belongs to blank, therefore, studies the compisite seeping layer technology of preparing and realizes to DZ125 nickel base superalloys
Application be of great significance.
Invention content
It is answered the object of the present invention is to provide a kind of Cr-Al-Y compisite seeping layers and its what DZ125 nickel-base alloys surface was modified
With the high temperature resisting corrosion resisting performance of DZ125 nickel-base alloys can be effectively improved using this method.
The present invention solves used by the technical problem that the technical scheme comprises the following steps：
A kind of penetration enhancer that nickel-base alloy surface is modified, including Al-Y penetration enhancers and Cr-Y penetration enhancers, in percentage by weight,
The group of Al-Y penetration enhancers becomes：10%~15% is oozed element al, and 1%~2% is oozed element Y2O3, 6%~10% catalyst
NH4Cl, surplus are filler Al2O3；The group of Cr-Y penetration enhancers becomes：12%~18% is oozed element Cr, and 1%~2% is oozed element
Y2O3, 6%~10% catalyst n H4Cl, surplus are filler Al2O3.Wherein, Al, Cr, NH4Cl、Y2O3And Al2O3It is powder
Shape, and Al2O3≤ 200 mesh.
A kind of nickel-base alloy surface is modified the application method of penetration enhancer, includes the following steps：
(1) alkali cleaning：It is in 65~80 DEG C of alkali wash waters that sample, which is placed in temperature, wherein alkali wash water is 75~100g/L's
The Na of NaOH solution or 20~25g/L3PO4Solution impregnates 10~15min；
(2) it washes：Sample after alkali cleaning is rinsed using circulating water, and is dried up；
(3) penetration enhancer is prepared：Penetration enhancer is prepared mixing according to a certain percentage to be placed in ball mill after grinding 3h, is placed in temperature
It is dried to keep the temperature 1~2h in 120 DEG C of baking ovens, the penetration enhancer of preparation is respectively Al-Y penetration enhancers and Cr-Y penetration enhancers；
(4) penetration enhancer is penetrated into：
The first step penetrates into Al-Y penetration enhancers：
A, the Al-Y penetration enhancers after drying are packed into crucible, and sample is embedded in penetration enhancer, keep certain between adjacent samples
Distance,
B, the crucible equipped with sample is capped and is used Ludox and Al2O3Sealing is placed in Muffle furnace, at 100~150 DEG C
Lower heat preservation 0.5h, makes Ludox and Al2O3Sealant is fully cured, wherein Ludox and Al2O3Preparation method be per 1L silicon
1~1.2kg Al are added in colloidal sol2O3And mix,
C, the Muffle furnace 1h that heats up reaches 950 DEG C to temperature, is kept the temperature at 950 DEG C after 40~60min with stove to room temperature,
D, pack cementation is entered to the sample after penetration enhancer rinse using circulating water, then is dried, it is spare；
Second step penetrates into Cr-Y penetration enhancers：
A, the Cr-Y penetration enhancers after drying are packed into crucible, and the sample after infiltration Al-Y penetration enhancers is embedded in penetration enhancer, it is adjacent
Certain distance is kept between sample,
B, the crucible equipped with infiltration Al-Y penetration enhancer samples is capped and is used Ludox and Al2O3Sealing is placed in Muffle furnace,
0.5h is kept the temperature at 100~150 DEG C, makes Ludox and Al2O3Sealant is fully cured, wherein Ludox and Al2O3Preparation
Method is per 1~1.2kg of addition Al in 1L Ludox2O3And mix,
C, the Muffle furnace 70min that heats up reaches 1050 DEG C to temperature, is kept the temperature at 1050 DEG C after 1.5~2.5h with stove to room temperature,
D, sample is taken out；
(5) cleaning, drying：Two-step method composite cementation is entered to the sample after infiltration layer to rinse using circulating water, it is then clear with alcohol
It washes, then is dried, terminated.
It can realize that two-step method prepares Cr-Al-Y composite cementations on DZ125 nickel-base alloys surface using technical scheme of the present invention
Layer, and the coating obtained has the characteristics that binding force is good, even tissue is fine and close, improves the high temperature resisting corrosion resisting of the alloy
It can, that is, under identical working condition, corrosion resistance improves 3-5 times compared with matrix alloy, meanwhile, which has simply
Stable, easy to operate, efficient, of low cost, the features such as being easily achieved.
Description of the drawings
Fig. 1 is the method flow diagram using technical solution of the present invention；
Fig. 2 for the Cr-Al-Y compisite seeping layers surface obtained using the embodiment of the present invention 1 microstructure figure；
Fig. 3 for the Cr-Al-Y compisite seeping layers section obtained using the embodiment of the present invention 1 microstructure figure；
Fig. 4 for the Cr-Al-Y compisite seeping layers surface obtained using the embodiment of the present invention 2 microstructure figure；
Fig. 5 for the Cr-Al-Y compisite seeping layers section obtained using the embodiment of the present invention 2 microstructure figure；
Fig. 6 for the Cr-Al-Y compisite seeping layers surface obtained using the embodiment of the present invention 3 microstructure figure；
Fig. 7 for the Cr-Al-Y compisite seeping layers section obtained using the embodiment of the present invention 3 microstructure figure；
Fig. 8 for the Cr-Al-Y compisite seeping layers section obtained using the embodiment of the present invention 1 phase composition figure.
Specific implementation mode
Embodiment 1
As shown in Figure 1, use the method flow of technical solution of the present invention for：1. alkali cleaning：DZ125 alloy samples are placed in temperature
For degree in 65 DEG C of alkali wash waters, to impregnate 15min, alkali wash water is the NaOH solution of 100g/L；2. washing：Sample after alkali cleaning is used
Circulating water rinses, drying；3. preparing penetration enhancer：Penetration enhancer is accurately weighed according to quantity, and the proportioning of Al-Y penetration enhancers is by weight percentage：12%
Al, 7%NH4Cl (analysis is pure), 1%Y2O3, surplus Al2O3；The proportioning of Cr-Y penetration enhancers is by weight percentage：15%Cr, 7%
NH4Cl (analysis is pure), 1%Y2O3, surplus Al2O3；4. ball milling：Prepared Al-Y penetration enhancers, Cr-Y penetration enhancers are respectively placed in ball
It is ground in grinding machine, it is made to be sufficiently mixed, refine penetration enhancer particle；5. drying：Penetration enhancer after ball milling is placed in the baking that temperature is 120 DEG C
1h is kept the temperature in case to be dried；6. the 1st step of composite cementation penetrates into Al-Y penetration enhancers, the Al-Y penetration enhancers after drying are packed into crucible by a., and
Sample is embedded in penetration enhancer, certain distance is kept between adjacent samples；B. the crucible equipped with sample be capped and use Ludox and
Al2O3Sealing is placed in Muffle furnace, and keeps the temperature 0.5h at 100 DEG C, makes Ludox and Al2O3Sealant is fully cured, wherein
Ludox and Al2O3Preparation method be that 1kgAl is added per 1L Ludox2O3And it mixes；C. the Muffle furnace 1h that heats up reaches to temperature
950 DEG C, at 950 DEG C with stove to room temperature after heat preservation 50min；D. sample embedding penetrated into after Al-Y penetration enhancers is rushed using circulating water
It washes, then is dried, it is spare；7. the 2nd step of composite cementation penetrates into Cr-Y penetration enhancers, the Cr-Y penetration enhancers after drying are packed into crucible by a., and
In the sample embedment penetration enhancer after infiltration Al-Y penetration enhancers, certain distance is kept between adjacent samples；B. equipped with having penetrated into Al-Y
The crucible of penetration enhancer sample is capped and uses Ludox and Al2O3Sealing is placed in Muffle furnace, and keeps the temperature 0.5h at 100 DEG C, makes silicon
Colloidal sol and Al2O3Sealant is fully cured, wherein Ludox and Al2O3Preparation method be that 1kgAl is added per 1L Ludox2O3And
Mixing；C. the Muffle furnace 70min that heats up reaches 1050 DEG C to temperature, is kept the temperature at 1050 DEG C after 2h with stove to room temperature；D. sample is taken out；
8. cleaning, drying：Two-step method composite cementation is entered to the sample after infiltration layer to rinse using circulating water, then uses alcohol washes, then dried
It is dry, terminate.
Embodiment 2
As shown in Figure 1, use the method flow of technical solution of the present invention for：1. alkali cleaning：DZ125 alloy samples are placed in temperature
For degree in 70 DEG C of alkali wash waters, to impregnate 13min, alkali wash water is the Na of 20g/L3PO4Solution；2. washing：Sample after alkali cleaning is used
Circulating water rinses, drying；3. preparing penetration enhancer：Penetration enhancer is accurately weighed according to quantity, and the proportioning of Al-Y penetration enhancers is by weight percentage：10%
Al, 6%NH4Cl (analysis is pure), 1.5%Y2O3, surplus Al2O3；The proportioning of Cr-Y penetration enhancers is by weight percentage：10%Cr,
6%NH4Cl (analysis is pure), 1.5%Y2O3, surplus Al2O3；4. ball milling：Prepared Al-Y penetration enhancers, Cr-Y penetration enhancers are set respectively
It is ground in ball mill, it is made to be sufficiently mixed, refine penetration enhancer particle；5. drying：It is 120 DEG C that penetration enhancer after ball milling, which is placed in temperature,
Baking oven in heat preservation 1.5h dried；6. the 1st step of composite cementation, penetrates into Al-Y penetration enhancers, a. is packed into the Al-Y penetration enhancers after drying
Crucible, and sample is embedded in penetration enhancer, certain distance is kept between adjacent samples；B. the crucible equipped with sample is capped and uses silicon
Colloidal sol and Al2O3Sealing is placed in Muffle furnace, and keeps the temperature 0.5h at 120 DEG C, makes Ludox and Al2O3Sealant is completely solid
Change, wherein Ludox and Al2O3Preparation method be that 1.2kgAl is added per 1L Ludox2O3And it mixes；C. Muffle furnace heating 1h
Reach 950 DEG C to temperature, at 950 DEG C with stove to room temperature after heat preservation 60min；D. sample embedding penetrated into after Al-Y penetration enhancers uses
Circulating water rinses, then is dried, spare；7. the 2nd step of composite cementation, penetrates into Cr-Y penetration enhancers, a. fills the Cr-Y penetration enhancers after drying
Enter crucible, and in the sample embedment penetration enhancer after infiltration Al-Y penetration enhancers, certain distance is kept between adjacent samples；B. equipped with
The crucible for penetrating into Al-Y penetration enhancer samples is capped and uses Ludox and Al2O3Sealing is placed in Muffle furnace, and is kept the temperature at 120 DEG C
0.5h makes Ludox and Al2O3Sealant is fully cured, wherein Ludox and Al2O3Preparation method be to be added per 1L Ludox
1.2kgAl2O3And it mixes；C. the Muffle furnace 70min that heats up reaches 1050 DEG C to temperature, is kept the temperature at 1050 DEG C after 1.5h with stove to room
Temperature；D. sample is taken out；8. cleaning, drying：Two-step method composite cementation is entered to the sample after infiltration layer to rinse using circulating water, then uses wine
Seminal plasma is washed, then is dried, and is terminated.
Embodiment 3
As shown in Figure 1, use the method flow of technical solution of the present invention for：1. alkali cleaning：DZ125 alloy samples are placed in temperature
For degree in 80 DEG C of alkali wash waters, to impregnate 10min, alkali wash water is the NaOH solution of 75g/L；2. washing：Sample after alkali cleaning is used
Circulating water rinses, drying；3. preparing penetration enhancer：Penetration enhancer is accurately weighed according to quantity, and the proportioning of Al-Y penetration enhancers is by weight percentage：15%
Al, 10%NH4Cl (analysis is pure), 2%Y2O3, surplus Al2O3；The proportioning of Cr-Y penetration enhancers is by weight percentage：18%Cr,
10%NH4Cl (analysis is pure), 2%Y2O3, surplus Al2O3；4. ball milling：Prepared Al-Y penetration enhancers, Cr-Y penetration enhancers are set respectively
It is ground in ball mill, it is made to be sufficiently mixed, refine penetration enhancer particle；5. drying：It is 120 DEG C that penetration enhancer after ball milling, which is placed in temperature,
Baking oven in heat preservation 2h dried；6. the 1st step of composite cementation, penetrates into Al-Y penetration enhancers, the Al-Y penetration enhancers after drying are packed into earthenware by a.
Crucible, and sample is embedded in penetration enhancer, certain distance is kept between adjacent samples；B. the crucible equipped with sample is capped and uses silicon molten
Glue and Al2O3Sealing is placed in Muffle furnace, and keeps the temperature 0.5h at 150 DEG C, makes Ludox and Al2O3Sealant is fully cured,
Wherein Ludox and Al2O3Preparation method be that 1.5kgAl is added per 1L Ludox2O3And it mixes；C. Muffle furnace heats up 1h to temperature
Degree reaches 950 DEG C, at 950 DEG C with stove to room temperature after heat preservation 40min；D. sample embedding penetrated into after Al-Y penetration enhancers uses flowing
Water rinses, then is dried, spare；7. the 2nd step of composite cementation, penetrates into Cr-Y penetration enhancers, the Cr-Y penetration enhancers after drying are packed into earthenware by a.
Crucible, and in the sample embedment penetration enhancer after infiltration Al-Y penetration enhancers, certain distance is kept between adjacent samples；B. equipped with having penetrated into
The crucible of Al-Y penetration enhancer samples is capped and uses Ludox and Al2O3Sealing is placed in Muffle furnace, and keeps the temperature 0.5h at 150 DEG C,
Make Ludox and Al2O3Sealant is fully cured, wherein Ludox and Al2O3Preparation method be to be added per 1L Ludox
1.5kgAl2O3And it mixes；C. the Muffle furnace 70min that heats up reaches 1050 DEG C to temperature, is kept the temperature at 1050 DEG C after 2.5h with stove to room
Temperature；D. sample is taken out；8. cleaning, drying：Two-step method composite cementation is entered to the sample after infiltration layer to rinse using circulating water, then uses wine
Seminal plasma is washed, then is dried, and is terminated.
Fig. 2 to Fig. 6 is utilizes the microstructure on 1 to 3 obtained Cr-Al-Y compisite seeping layers surface of the embodiment of the present invention and section
Figure, as shown in fig. 7, by the phase composition figure in compisite seeping layer section it is found that forming from outermost layer to innermost layer be followed successively by NiCr layers,
NiCr/Ni2Cr3Layer, NiAl layer, Ni3Al layers and rich nickel cross layer, and therefore, Cr, Al, Y element realize compound permeation, and whole
A quality layer is good.
Claims (3)
1. the penetration enhancer that a kind of nickel-base alloy surface is modified, which is characterized in that the penetration enhancer includes Al-Y penetration enhancers and Cr-Y penetration enhancers, is pressed
According to weight percent meter, the group of Al-Y penetration enhancers becomes：10%~15% is oozed element al, and 1%~2% is oozed element Y2O3, 6%
~10% catalyst n H4Cl, surplus are filler Al2O3；The group of Cr-Y penetration enhancers becomes：12%~18% is oozed element Cr, and 1%
~2% is oozed element Y2O3, 6%~10% catalyst n H4Cl, surplus are filler Al2O3；
The penetration enhancer in use, using first infiltration Al-Y penetration enhancers, then penetrates into the mode of Cr-Y penetration enhancers.
2. the penetration enhancer that a kind of nickel-base alloy surface as described in claim 1 is modified, which is characterized in that described Al, Cr, NH4Cl、
Y2O3And Al2O3It is powdered, and the Al2O3≤ 200 mesh.
3. a kind of application method of penetration enhancer as described in claim 1, which is characterized in that include the following steps：
(1) alkali cleaning：It is to impregnate 10~15min in 65~80 DEG C of alkali wash waters that sample, which is placed in temperature, wherein the alkali wash water is
The NaOH solution of 75~100g/L or the Na of 20~25g/L3PO4Solution；
(2) it washes：Sample after alkali cleaning is rinsed using circulating water, and is dried up；
(3) penetration enhancer is prepared：Penetration enhancer is prepared mixing according to ratio described in claim 1 to be placed in ball mill after grinding 3h, is set
1~2h of heat preservation is dried in the baking oven that temperature is 120 DEG C, and the penetration enhancer of preparation is respectively Al-Y penetration enhancers and Cr-Y penetration enhancers；
(4) penetration enhancer is penetrated into：
The first step penetrates into Al-Y penetration enhancers：
A, the Al-Y penetration enhancers after drying are packed into crucible, and sample is embedded in penetration enhancer, certain distance is kept between adjacent samples；
B, the crucible equipped with sample is capped and is used Ludox and Al2O3Sealing is placed in Muffle furnace, is protected at 100~150 DEG C
Warm 0.5h makes Ludox and Al2O3Sealant is fully cured, wherein the Ludox and Al2O3Preparation method be per 1L silicon
1~1.2kgAl is added in colloidal sol2O3And it mixes；
C, the Muffle furnace 1h that heats up reaches 950 DEG C to temperature, is kept the temperature at 950 DEG C after 40~60min with stove to room temperature；
D, pack cementation is entered to the sample after penetration enhancer rinse using circulating water, then is dried, it is spare；
Second step penetrates into Cr-Y penetration enhancers：
A, the Cr-Y penetration enhancers after drying are packed into crucible, and the sample after infiltration Al-Y penetration enhancers are embedded in penetration enhancer, adjacent samples
Between keep certain distance；
B, the crucible equipped with infiltration Al-Y penetration enhancer samples is capped and is used Ludox and Al2O3Sealing is placed in Muffle furnace,
0.5h is kept the temperature at 100~150 DEG C, makes Ludox and Al2O3Sealant is fully cured, wherein the Ludox and Al2O3Match
Method processed is per 1~1.2kgAl of addition in 1L Ludox2O3And it mixes；
C, the Muffle furnace 70min that heats up reaches 1050 DEG C to temperature, is kept the temperature at 1050 DEG C after 1.5~2.5h with stove to room temperature；
D, sample is taken out；
(5) cleaning, drying：Two-step method composite cementation is entered to the sample after infiltration layer to rinse using circulating water, then uses alcohol washes, then
It is dried, is terminated.
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