CN106222607A - One oozes cobalt aluminum penetration enhancer and method - Google Patents
One oozes cobalt aluminum penetration enhancer and method Download PDFInfo
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- CN106222607A CN106222607A CN201610766143.2A CN201610766143A CN106222607A CN 106222607 A CN106222607 A CN 106222607A CN 201610766143 A CN201610766143 A CN 201610766143A CN 106222607 A CN106222607 A CN 106222607A
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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
- C23C10/06—Solid state diffusion of only metal elements or silicon into metallic material surfaces using gases
- C23C10/14—Solid state diffusion of only metal elements or silicon into metallic material surfaces using gases more than one element being diffused in one step
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Abstract
The invention belongs to chemical vapour deposition technique field, be applied to complicated inner cavity blade metallic cementation field, be specifically related to one and ooze cobalt aluminum penetration enhancer and method.This penetration enhancer includes penetration enhancer component A and penetration enhancer component B, and in terms of mass fraction, penetration enhancer component A includes cobalt powder 19～29 parts, nickel yittrium alloy powder 1～11 parts, aluminium oxide powder 15～25 parts, ammonium iodide 1～1.2 parts；Penetration enhancer component B includes ammonium iodide 1.2 parts, ammonium chloride 0.3～0.4 part, ferrum aluminium powder 45～55 parts, pure aluminium powder 5～10 parts.Together it is placed in vapor deposition apparatus and carries out vapour deposition with test specimen and ooze altogether to reach cobalt aluminum after penetration enhancer component A is mixed homogeneously with penetration enhancer component B.This penetration enhancer dispensing is easy, when carrying out oozing cobalt aluminum, [Al] and [Co] reaches balance, densification, cobalt aluminum infiltration layer continuous, uniform can be formed in surface of test piece, make the complicated inner cavity profile of test specimen can obtain the cobalt aluminum infiltration layer of even structure by vapour deposition, enhance antioxidation and the antiseptic property of test specimen, improve service life, easy to operate.
Description
[technical field]
The invention belongs to chemical vapour deposition technique field, be applied to complicated inner cavity blade metallic cementation field, be specifically related to
One oozes cobalt aluminum penetration enhancer and method.
[background technology]
Workpiece long-term work under marine environment, single aluminising is difficult to meet requirement for anticorrosion, and cobalt aluminum oozes altogether can protected
Card workpiece is on the premise of having antioxygenic property, additionally it is possible to be effectively improved corrosion resistance, meets design special requirement.But cobalt
Element is difficult to penetrate into, and at high temperature, the intermediate material AlClx that thermal cracking is formed is easier to generate activity relative to CoClx
[Al], forms NiAl phase so that [Co] hardly enters Ni base high temperature and close.
[summary of the invention]
For solving problems of the prior art, it is an object of the invention to provide one and ooze cobalt aluminum penetration enhancer and method, use
In the metallic cementation of blade inner chamber, dispensing is easy, easy to operate, it is possible to makes surface of the work obtain uniform cobalt aluminum infiltration layer, strengthens leaf
The antioxidation of sheet and antiseptic property, improve the service life of blade.
It is an object of the invention to be achieved through the following technical solutions.
One oozes cobalt aluminum penetration enhancer, including penetration enhancer component A and penetration enhancer component B, in terms of mass fraction, penetration enhancer component A include with
Lower component: cobalt powder 19～29 parts, nickel-yittrium alloy powder 1～11 parts, aluminium oxide powder 15～25 parts, ammonium iodide 1～1.2 parts；Ooze
Agent component B includes following components: ammonium iodide 1～1.2 parts, ammonium chloride 0.3～0.4 part, ferrum aluminium powder 45～55 parts, pure aluminium powder 5～
10 parts.
In terms of mass fraction, described penetration enhancer component A includes 24 parts of cobalt powders, 6 parts of nickel-yittrium alloy powder, 20 part of three oxidation two
Aluminium powder, 1 part of ammonium iodide；Penetration enhancer component B includes 1.2 parts of ammonium iodides, 0.3 part of ammonium chloride, 50 parts of ferrum aluminium powders, 5 parts of pure aluminium powder.
The described mixture oozing calcined product that cobalt aluminum penetration enhancer is penetration enhancer component A and penetration enhancer component B.
One oozes cobalt aluminum method, is together placed on gas phase sinks with test specimen after penetration enhancer component A being mixed homogeneously with penetration enhancer component B
Carrying out vapour deposition in long-pending equipment, in terms of mass fraction, penetration enhancer component A includes 19～29 parts of cobalt powders, 1～11 part of nickel-yittrium alloy
Powder, 15～25 parts of aluminium oxide powders, 1～1.2 part of ammonium iodide；Penetration enhancer component B includes 1～1.2 part of ammonium iodide, 0.3～0.4 part
Ammonium chloride, 45～55 parts of ferrum aluminium powders, 5～10 parts of pure aluminium powder.
First penetration enhancer component A is calcined, then the material after calcining is mixed homogeneously with penetration enhancer component B again and test specimen together
It is placed in vapor deposition apparatus and carries out vapour deposition.
Described penetration enhancer component A is calcined in vapor deposition apparatus, and the process of calcining is as follows ,-0.01MPa～-
Under the vacuum of 0.02MPa, penetration enhancer component A is heated to 950 DEG C～1000 DEG C, then is incubated 3 hours～4 hours, after insulation terminates
Cool to less than 680 DEG C with the furnace, then carry out air cooling.
Described vapor deposition processes is as follows, by penetration enhancer and workpiece heat under the vacuum of-0.01MPa～-0.02MPa
To 950 DEG C～1000 DEG C, then being incubated 6 hours～8 hours, insulation cools to less than 680 DEG C with the furnace after terminating, then carries out air cooling.
Described test specimen carries out diffusion in vacuum after having carried out vapour deposition again.
The pressure of described diffusion in vacuum is less than 6.65 × 10-2Pa, starts dividing potential drop 6.65～10.64Pa when 800 DEG C, protects
Temperature temperature is 950 DEG C～1000 DEG C, and temperature retention time is 1 hour～2 hours, and insulation cools down after terminating.
Described test specimen carries out blast process to its surface before vapour deposition.
There is advantages that
The penetration enhancer dispensing of the present invention is easy, and when carrying out oozing cobalt aluminum, [Al] and [Co] reaches balance, it is possible in surface of test piece
Form cobalt aluminum infiltration layer fine and close, continuous, uniform, made by vapour deposition the complicated inner cavity profile of test specimen can obtain even structure
Cobalt aluminum infiltration layer, enhances antioxidation and the antiseptic property of test specimen, improves the service life of test specimen, and easy to operate.
Further, penetration enhancer component A is first calcined, then the material after calcining is mixed homogeneously with penetration enhancer component B again
Carry out vapour deposition so that in vapor deposition processes, improve cobalt atom and the reactivity of aluminum atom, it is possible to reduce cobalt aluminum altogether
Ooze the time.
Further, the present invention carries out diffusion in vacuum after test specimen carries out vapour deposition again so that infiltration layer and surface of test piece
More preferable in conjunction with effect.
Further, the test specimen of the present invention before vapour deposition, its surface is carried out blast process can remove surface of test piece
Passivating film, it is possible to increase the effect that cobalt aluminum oozes altogether.
Cobalt aluminum penetration enhancer is oozed and after surface of test piece oozed cobalt aluminum by method, the cobalt aluminum infiltration layer of surface of test piece by the present invention
Densification, uniform continuity is good, and the degree of depth of infiltration layer is 20～35 μm.
[accompanying drawing explanation]
Fig. 1 is the metallographic structure oozing cobalt aluminium lamination；
Fig. 2 (a) is that test specimen oozes the result figure of component analysis aluminium element after cobalt aluminum and diffusion, Fig. 2 (b) be test specimen ooze cobalt aluminum and
The result figure of component analysis cobalt element after diffusion.
[detailed description of the invention]
Below in conjunction with embodiment and accompanying drawing, the present invention is further illustrated.
Technical scheme is as follows, and the cobalt aluminum penetration enhancer that oozes of the present invention includes penetration enhancer component A and penetration enhancer component B, with matter
Amount number meter, penetration enhancer component A includes following components: cobalt powder 19～29 parts, nickel-yittrium alloy powder 1～11 parts, aluminium oxide powder 15
～25 parts, ammonium iodide 1～1.2 parts；Penetration enhancer component B includes following components: ammonium iodide 1～1.2 parts, ammonium chloride 0.3～0.4 part,
Ferrum aluminium powder 45～55 parts, pure aluminium powder 5～10 parts.
By the present invention ooze cobalt aluminum penetration enhancer workpiece is carried out vapour deposition time, first the surface of test specimen is carried out at blast
Reason, removes the passivating film of surface of test piece, then after penetration enhancer component A is mixed homogeneously with penetration enhancer component B and test specimen is together placed on horse
Tank not carries out vapour deposition；
Or first calcining penetration enhancer component A before carrying out vapour deposition, the process of the calcining of penetration enhancer component A is as follows,
Under the vacuum of-0.01MPa～-0.02MPa, penetration enhancer component A is heated to 950 DEG C～1000 DEG C, then is incubated 3 hours～4 little
Time, insulation cools to less than 680 DEG C with the furnace after terminating, then carries out air cooling, then by penetration enhancer component A after calcining and penetration enhancer component B
Mixing, then carry out vapour deposition；
Vapor deposition processes is as follows: by penetration enhancer and workpiece heat to 950 under the vacuum of-0.01MPa～-0.02MPa
DEG C～1000 DEG C, then be incubated 6 hours～8 hours, insulation cools to less than 680 DEG C with the furnace after terminating, then carries out air cooling；
Carrying out diffusion in vacuum after test specimen has carried out vapour deposition again, the pressure of diffusion in vacuum is less than 6.65 × 10-2Pa,
Starting dividing potential drop 6.65～10.64Pa when 800 DEG C, holding temperature is 950 DEG C～1000 DEG C, and temperature retention time is 1 hour～2 hours,
Insulation cools down after terminating.
Below by embodiment, the present invention is further illustrated
Embodiment 1
The cobalt aluminum method of oozing of the present embodiment is carried out in accordance with the following steps:
First test specimen is carried out before carrying out vapour deposition blast process, the passivating film of removal surface of test piece, and penetration enhancer
Component carries out dispensing, joins penetration enhancer component A: take cobalt powder 2.4kg, nickel-yittrium alloy powder 0.6kg, aluminium oxide powder 2.0kg, iodate
Ammonium 100g is mixed and stirred for uniformly；Join penetration enhancer component B: take ammonium iodide 120g, ammonium chloride 30g, ferrum aluminium powder 5.5kg, pure aluminium powder
0.5kg is mixed and stirred for uniformly；
Again penetration enhancer component A is calcined, in Muffle pot, under the vacuum of-0.01MPa, penetration enhancer component A is heated to
980 DEG C, then it is incubated 3 hours, insulation cools to 680 DEG C with the furnace after terminating, then carries out air cooling；
The calcined product of penetration enhancer component A is mixed homogeneously with penetration enhancer component B, then this mixture is put into magazine is placed in horse
Not pot bottom, is then arranged on test specimen in Muffle pot, then installs Muffle pot, starts vapour deposition, and vapor deposition processes is such as
Under: utilizing the mechanical pump tank body evacuation to Muffle pot, vacuum is-0.01MPa (Pressure gauge), will ooze tank and be heated to oozing cobalt aluminum
Holding temperature, holding temperature is 980 DEG C, and temperature retention time is 7 hours, and insulation cools to 680 DEG C with the furnace after terminating, then enters test specimen
Line space is cold；
After test specimen air cooling, then test specimen being carried out diffusion in vacuum, in vacuum diffusion process, pressure is 6.65 × 10-2Pa,
Starting dividing potential drop 6.65Pa when 800 DEG C, holding temperature is 950 DEG C, and temperature retention time is 1 hour, and insulation carries out sky to test specimen after terminating
Cold.
Embodiment 2
The cobalt aluminum method of oozing of the present embodiment is carried out in accordance with the following steps:
First test specimen is carried out before carrying out vapour deposition blast process, the passivating film of removal surface of test piece, and penetration enhancer
Component carries out dispensing, joins penetration enhancer component A: take cobalt powder 2.4kg, nickel-yittrium alloy powder 0.6kg, aluminium oxide powder 2.0kg, iodate
Ammonium 100g is mixed and stirred for uniformly；Join penetration enhancer component B: take ammonium iodide 120g, ammonium chloride 30g, ferrum aluminium powder 5.5kg, pure aluminium powder
0.5kg is mixed and stirred for uniformly；
Again penetration enhancer component A is calcined, in Muffle pot, under the vacuum of-0.01MPa, penetration enhancer component A is heated to
980 DEG C, then it is incubated 3 hours, insulation cools to 680 DEG C with the furnace after terminating, then carries out air cooling；
The calcined product of penetration enhancer component A is mixed homogeneously with penetration enhancer component B, then this mixture is put into magazine is placed in horse
Not pot bottom, is then arranged on test specimen in Muffle pot, then installs Muffle pot, starts vapour deposition, and vapor deposition processes is such as
Under: utilizing the mechanical pump tank body evacuation to Muffle pot, vacuum is-0.01MPa (Pressure gauge), will ooze tank and be heated to oozing cobalt aluminum
Holding temperature, holding temperature is 1000 DEG C, and temperature retention time is 6 hours, and insulation cools to 680 DEG C with the furnace after terminating, then to test specimen
Carry out air cooling；
After test specimen air cooling, then test specimen being carried out diffusion in vacuum, in vacuum diffusion process, pressure is 6.65 × 10-2Pa,
Starting dividing potential drop 6.65Pa when 800 DEG C, holding temperature is 950 DEG C, and temperature retention time is 1 hour, and insulation carries out sky to test specimen after terminating
Cold.
Embodiment 3
The cobalt aluminum method of oozing of the present embodiment is carried out in accordance with the following steps:
First test specimen is carried out before carrying out vapour deposition blast process, the passivating film of removal surface of test piece, and penetration enhancer
Component carries out dispensing, joins penetration enhancer component A: take cobalt powder 2.4kg, nickel-yittrium alloy powder 0.6kg, aluminium oxide powder 2.0kg, iodate
Ammonium 100g is mixed and stirred for uniformly；Join penetration enhancer component B: take ammonium iodide 120g, ammonium chloride 30g, ferrum aluminium powder 5.5kg, pure aluminium powder
0.5kg is mixed and stirred for uniformly；
Again penetration enhancer component A is calcined, in Muffle pot, under the vacuum of-0.01MPa, penetration enhancer component A is heated to
980 DEG C, then it is incubated 3 hours, insulation cools to 680 DEG C with the furnace after terminating, then carries out air cooling；
The calcined product of penetration enhancer component A is mixed homogeneously with penetration enhancer component B, then this mixture is put into magazine is placed in horse
Not pot bottom, is then arranged on test specimen in Muffle pot, then installs Muffle pot, starts vapour deposition, and vapor deposition processes is such as
Under: utilizing the mechanical pump tank body evacuation to Muffle pot, vacuum is-0.01MPa (Pressure gauge), will ooze tank and be heated to oozing cobalt aluminum
Holding temperature, holding temperature is 980 DEG C, temperature retention time be 7 hours 30 points, insulation cools to 680 DEG C with the furnace after terminating, then to examination
Part carries out air cooling；
After test specimen air cooling, then test specimen being carried out diffusion in vacuum, in vacuum diffusion process, pressure is 6.65 × 10-2Pa,
Starting dividing potential drop 6.65Pa when 800 DEG C, holding temperature is 950 DEG C, and temperature retention time is 1 hour, and insulation carries out sky to test specimen after terminating
Cold.
(a) and Fig. 2 (b) are shown as shown in Figure 1, Figure 2, after test specimen diffusion in vacuum, by Metallographic Analysis, ooze cobalt by embodiment 1
Aluminum process, alloying layer thickness 30～35 μm of test specimen, diffusion layer organization is uniformly, continuously；Cobalt element content 6～7%, aluminium element content 24
～26%；Oozing cobalt aluminum process by embodiment 2, alloying layer thickness 30～34 μm of test specimen, diffusion layer organization is uniformly, continuously；Cobalt element
Content 6～8%, aluminium element content 29～32%；Cobalt aluminum process is oozed by embodiment 3, alloying layer thickness 32～36 μm of test specimen, ooze
Layer tissue is uniformly, continuously；Cobalt element content 6.5～8%, aluminium element content 28～31%, the penetration enhancer of the present invention and ooze cobalt aluminum side
Method makes [Al] and [Go] reach balance, by penetration enhancer material, additive, prefabricated and proportioning adjustment, in conjunction with infiltration layer technique, it is achieved
Bianry alloy oozes altogether.
Embodiment 4
The cobalt aluminum method of oozing of the present embodiment is carried out in accordance with the following steps:
First test specimen is carried out before carrying out vapour deposition blast process, the passivating film of removal surface of test piece, and penetration enhancer
Component carries out dispensing, joins penetration enhancer component A: take cobalt powder 1.9kg, nickel-yittrium alloy powder 0.8kg, aluminium oxide powder 1.5kg, iodate
Ammonium 110g is mixed and stirred for uniformly；Join penetration enhancer component B: take ammonium iodide 100g, ammonium chloride 35g, ferrum aluminium powder 4.5kg, pure aluminium powder
0.7kg is mixed and stirred for uniformly；
Again penetration enhancer component A is calcined, in Muffle pot, under the vacuum of-0.02MPa, penetration enhancer component A is heated to
850 DEG C, then it is incubated 3.5 hours, insulation cools to 650 DEG C with the furnace after terminating, then carries out air cooling；
The calcined product of penetration enhancer component A is mixed homogeneously with penetration enhancer component B, then this mixture is put into magazine is placed in horse
Not pot bottom, is then arranged on test specimen in Muffle pot, then installs Muffle pot, starts vapour deposition, and vapor deposition processes is such as
Under: utilizing the mechanical pump tank body evacuation to Muffle pot, vacuum is-0.02MPa (Pressure gauge), will ooze tank and be heated to oozing cobalt aluminum
Holding temperature, holding temperature is 950 DEG C, and temperature retention time is 7 hours, and insulation cools to 650 DEG C with the furnace after terminating, then enters test specimen
Line space is cold；
After test specimen air cooling, then test specimen being carried out diffusion in vacuum, in vacuum diffusion process, pressure is 6.0 × 10-2Pa,
Starting dividing potential drop 7.0Pa when 800 DEG C, holding temperature is 980 DEG C, and temperature retention time is 2 hours, and insulation carries out air cooling to test specimen after terminating
?.
Oozing cobalt aluminum process by embodiment 4, alloying layer thickness 20～25 μm of test specimen, diffusion layer organization is uniformly, continuously；Cobalt element
Content 6～8%, aluminium element content 23～28%.
Embodiment 5
The cobalt aluminum method of oozing of the present embodiment is carried out in accordance with the following steps:
First test specimen is carried out before carrying out vapour deposition blast process, the passivating film of removal surface of test piece, and penetration enhancer
Component carries out dispensing, joins penetration enhancer component A: take cobalt powder 2.9kg, nickel-yittrium alloy powder 1.1kg, aluminium oxide powder 2.5kg, iodate
Ammonium 120g is mixed and stirred for uniformly；Join penetration enhancer component B: take ammonium iodide 110g, ammonium chloride 40g, ferrum aluminium powder 5.5kg, pure aluminium powder
0.9kg is mixed and stirred for uniformly；
Again penetration enhancer component A is calcined, in Muffle pot, under the vacuum of-0.015MPa, penetration enhancer component A is heated to
1000 DEG C, then it is incubated 4 hours, insulation cools to 600 DEG C with the furnace after terminating, then carries out air cooling；
The calcined product of penetration enhancer component A is mixed homogeneously with penetration enhancer component B, then this mixture is put into magazine is placed in horse
Not pot bottom, is then arranged on test specimen in Muffle pot, then installs Muffle pot, starts vapour deposition, and vapor deposition processes is such as
Under: utilizing the mechanical pump tank body evacuation to Muffle pot, vacuum is-0.015MPa (Pressure gauge), will ooze tank and be heated to oozing cobalt
Aluminum holding temperature, holding temperature is 970 DEG C, and temperature retention time is 8 hours, and insulation cools to 600 DEG C with the furnace after terminating, then to test specimen
Carry out air cooling；
After test specimen air cooling, then test specimen being carried out diffusion in vacuum, in vacuum diffusion process, pressure is 5.5 × 10-2Pa,
Starting dividing potential drop 8.0Pa when 800 DEG C, holding temperature is 990 DEG C, and temperature retention time is 1.5 hours, and insulation carries out sky to test specimen after terminating
Cold.
Oozing cobalt aluminum process by embodiment 5, alloying layer thickness 25～35 μm of test specimen, diffusion layer organization is uniformly, continuously；Cobalt element
Content 6～8%, aluminium element content 25～30%.
Embodiment 6
The cobalt aluminum method of oozing of the present embodiment is carried out in accordance with the following steps:
First test specimen is carried out before carrying out vapour deposition blast process, the passivating film of removal surface of test piece, and penetration enhancer
Component carries out dispensing, joins penetration enhancer component A: take cobalt powder 2.7kg, nickel-yittrium alloy powder 1.0kg, aluminium oxide powder 2.4kg, iodate
Ammonium 100g is mixed and stirred for uniformly；Join penetration enhancer component B: take ammonium iodide 120g, ammonium chloride 35g, ferrum aluminium powder 5.3kg, pure aluminium powder
1.0kg is mixed and stirred for uniformly；
Again penetration enhancer component A is calcined, in Muffle pot, under the vacuum of-0.02MPa, penetration enhancer component A is heated to
970 DEG C, then it is incubated 4 hours, insulation cools to 500 DEG C with the furnace after terminating, then carries out air cooling；
The calcined product of penetration enhancer component A is mixed homogeneously with penetration enhancer component B, then this mixture is put into magazine is placed in horse
Not pot bottom, is then arranged on test specimen in Muffle pot, then installs Muffle pot, starts vapour deposition, and vapor deposition processes is such as
Under: utilizing the mechanical pump tank body evacuation to Muffle pot, vacuum is-0.02MPa (Pressure gauge), will ooze tank and be heated to oozing cobalt aluminum
Holding temperature, holding temperature is 960 DEG C, and temperature retention time is 8 hours, and insulation cools to 550 DEG C with the furnace after terminating, then enters test specimen
Line space is cold；
After test specimen air cooling, then test specimen being carried out diffusion in vacuum, in vacuum diffusion process, pressure is 5.0 × 10-2Pa,
Starting dividing potential drop 10.64Pa when 800 DEG C, holding temperature is 1000 DEG C, and temperature retention time is 2 hours, and test specimen is carried out after terminating by insulation
Air cooling.
Oozing cobalt aluminum process by embodiment 6, alloying layer thickness 23～25 μm of test specimen, diffusion layer organization is uniformly, continuously；Cobalt element
Content 7～8%, aluminium element content 24～29%.
Embodiment 7
The cobalt aluminum method of oozing of the present embodiment is carried out in accordance with the following steps:
First test specimen is carried out before carrying out vapour deposition blast process, the passivating film of removal surface of test piece, and penetration enhancer
Component carries out dispensing, joins penetration enhancer component A: take cobalt powder 2.7kg, nickel-yittrium alloy powder 1.0kg, aluminium oxide powder 2.4kg, iodate
Ammonium 100g is mixed and stirred for uniformly；Join penetration enhancer component B: take ammonium iodide 120g, ammonium chloride 35g, ferrum aluminium powder 5.3kg, pure aluminium powder
1.0kg is mixed and stirred for uniformly；
Again penetration enhancer component A is calcined, in Muffle pot, under the vacuum of-0.02MPa, penetration enhancer component A is heated to
1000 DEG C, then it is incubated 4 hours, insulation cools to 680 DEG C with the furnace after terminating, then carries out air cooling；
The calcined product of penetration enhancer component A is mixed homogeneously with penetration enhancer component B, then this mixture is put into magazine is placed in horse
Not pot bottom, is then arranged on test specimen in Muffle pot, then installs Muffle pot, starts vapour deposition, and vapor deposition processes is such as
Under: utilizing the mechanical pump tank body evacuation to Muffle pot, vacuum is-0.02MPa (Pressure gauge), will ooze tank and be heated to oozing cobalt aluminum
Holding temperature, holding temperature is 1000 DEG C, and temperature retention time is 8 hours, and insulation cools to 680 DEG C with the furnace after terminating, then to test specimen
Carry out air cooling；
After test specimen air cooling, then test specimen being carried out diffusion in vacuum, in vacuum diffusion process, pressure is 4.0 × 10-2Pa,
Starting dividing potential drop 6.65Pa when 800 DEG C, holding temperature is 1000 DEG C, and temperature retention time is 2 hours, and insulation carries out sky to test specimen after terminating
Cold.
Oozing cobalt aluminum process by embodiment 7, alloying layer thickness 30～35 μm of test specimen, diffusion layer organization is uniformly, continuously；Cobalt element
Content 6～7%, aluminium element content 26～32%.
Sum up: ooze cobalt aluminum penetration enhancer and after surface of test piece oozed cobalt aluminum by method by the present invention, the cobalt of surface of test piece
Aluminum infiltration layer is fine and close, and uniform continuity is good, and the degree of depth of infiltration layer is 20～35 μm.
Claims (10)
1. one kind oozes cobalt aluminum penetration enhancer, it is characterised in that include penetration enhancer component A and penetration enhancer component B, in terms of mass fraction, penetration enhancer group
Point A includes following components: cobalt powder 19～29 parts, nickel-yittrium alloy powder 1～11 parts, aluminium oxide powder 15～25 parts, ammonium iodide 1
～1.2 parts；Penetration enhancer component B includes following components: ammonium iodide 1～1.2 parts, ammonium chloride 0.3～0.4 part, ferrum aluminium powder 45～55 parts,
Pure aluminium powder 5～10 parts.
One the most according to claim 1 oozes cobalt aluminum penetration enhancer, it is characterised in that in terms of mass fraction, described penetration enhancer group
A is divided to include 24 parts of cobalt powders, 6 parts of nickel-yittrium alloy powder, 20 parts of aluminium oxide powders, 1 part of ammonium iodide；Penetration enhancer component B includes 1.2 parts
Ammonium iodide, 0.3 part of ammonium chloride, 50 parts of ferrum aluminium powders, 5 parts of pure aluminium powder.
One the most according to claim 1 oozes cobalt aluminum penetration enhancer, it is characterised in that described in ooze cobalt aluminum penetration enhancer be penetration enhancer component A
The mixture of calcined product and penetration enhancer component B.
4. one kind oozes cobalt aluminum method, it is characterised in that together put with test specimen after penetration enhancer component A being mixed homogeneously with penetration enhancer component B
Putting and carry out vapour deposition in vapor deposition apparatus, in terms of mass fraction, penetration enhancer component A includes 19～29 parts of cobalt powders, 1～11 part
Nickel-yittrium alloy powder, 15～25 parts of aluminium oxide powders, 1～1.2 part of ammonium iodide；Penetration enhancer component B includes 1.2 parts of ammonium iodides, 0.3
～0.4 part of ammonium chloride, 45～55 parts of ferrum aluminium powders, 5～10 parts of pure aluminium powder.
One the most according to claim 4 oozes cobalt aluminum method, it is characterised in that first penetration enhancer component A calcined, then will
Material after calcining is mixed homogeneously with penetration enhancer component B again and test specimen is together placed in vapor deposition apparatus and carries out vapour deposition.
One the most according to claim 5 oozes cobalt aluminum method, it is characterised in that described penetration enhancer component A sets in vapour deposition
Calcining in Bei, the process of calcining is as follows, penetration enhancer component A is heated under the vacuum of-0.01MPa～-0.02MPa
950 DEG C～1000 DEG C, then it is incubated 3 hours～4 hours, insulation cools to less than 680 DEG C with the furnace after terminating, then carries out air cooling.
One the most according to claim 4 oozes cobalt aluminum method, it is characterised in that described vapor deposition processes is as follows ,-
By penetration enhancer and workpiece heat to 950 DEG C～1000 DEG C under the vacuum of 0.01MPa～-0.02MPa, then it is incubated 6 hours～8 little
Time, insulation cools to less than 680 DEG C with the furnace after terminating, then carries out air cooling.
One the most according to claim 4 oozes cobalt aluminum method, it is characterised in that after described test specimen has carried out vapour deposition
Carry out diffusion in vacuum again.
One the most according to claim 8 oozes cobalt aluminum method, it is characterised in that the pressure of described diffusion in vacuum is less than
6.65×10-2Pa, starts dividing potential drop 6.65～10.64Pa when 800 DEG C, and holding temperature is 950 DEG C～1000 DEG C, and temperature retention time is
1 hour～2 hours, insulation cooled down after terminating.
One the most according to claim 4 oozes cobalt aluminum method, it is characterised in that described test specimen is right before vapour deposition
Its surface carries out blast process.
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| CN201610766143.2A CN106222607B (en) | 2016-08-29 | 2016-08-29 | A kind of infiltration cobalt aluminium penetration enhancer and method |
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| CN201610766143.2A CN106222607B (en) | 2016-08-29 | 2016-08-29 | A kind of infiltration cobalt aluminium penetration enhancer and method |
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| CN107858662A (en) * | 2017-11-29 | 2018-03-30 | 无锡透平叶片有限公司 | A kind of chemical vapor deposition Co Al of turbo blade method |
| CN114657544A (en) * | 2022-03-24 | 2022-06-24 | 彭州航大新材料有限公司 | Aluminizing cobalt process for inner cavity surface of nickel-based superalloy and cobalt-aluminum infiltration layer |
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| CN105420668A (en) * | 2015-11-20 | 2016-03-23 | 沈阳黎明航空发动机(集团)有限责任公司 | Technological method for cobalt permeating of nickel base alloy |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107858662A (en) * | 2017-11-29 | 2018-03-30 | 无锡透平叶片有限公司 | A kind of chemical vapor deposition Co Al of turbo blade method |
| CN107858662B (en) * | 2017-11-29 | 2020-06-30 | 无锡透平叶片有限公司 | Method for chemical vapor deposition of Co-Al of turbine blade |
| CN114657544A (en) * | 2022-03-24 | 2022-06-24 | 彭州航大新材料有限公司 | Aluminizing cobalt process for inner cavity surface of nickel-based superalloy and cobalt-aluminum infiltration layer |
| CN114657544B (en) * | 2022-03-24 | 2023-10-27 | 彭州航大新材料有限公司 | Cobalt aluminizing process and cobalt aluminizing layer for inner cavity surface of nickel-based superalloy |
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| CN106222607B (en) | 2019-05-07 |
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Address after: Weiyang Xu Jia Wan 710021 Shaanxi city of Xi'an Province Patentee after: AECC AVIATION POWER CO., LTD. Address before: Weiyang Xu Jia Wan 710021 Shaanxi city of Xi'an Province Patentee before: AVIC AVIATION ENGINE CORPORATION PLC |