CN106987755A - A kind of MCrAlY alloy and preparation method thereof - Google Patents
A kind of MCrAlY alloy and preparation method thereof Download PDFInfo
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- CN106987755A CN106987755A CN201710416477.1A CN201710416477A CN106987755A CN 106987755 A CN106987755 A CN 106987755A CN 201710416477 A CN201710416477 A CN 201710416477A CN 106987755 A CN106987755 A CN 106987755A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C30/00—Alloys containing less than 50% by weight of each constituent
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D18/00—Pressure casting; Vacuum casting
- B22D18/06—Vacuum casting, i.e. making use of vacuum to fill the mould
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/023—Alloys based on nickel
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C19/00—Alloys based on nickel or cobalt
- C22C19/03—Alloys based on nickel or cobalt based on nickel
- C22C19/05—Alloys based on nickel or cobalt based on nickel with chromium
- C22C19/058—Alloys based on nickel or cobalt based on nickel with chromium without Mo and W
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C19/00—Alloys based on nickel or cobalt
- C22C19/07—Alloys based on nickel or cobalt based on cobalt
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Abstract
The invention provides a kind of MCrAlY alloy and preparation method thereof, the MCrAlY alloy adds Zr, Si, Ti, Hf and Ta in existing MCrAlY alloy, to improve the mechanical property and oxidation resistance of MCrAlY alloy.The mode that the preparation method of the MCrAlY alloy is combined using vacuum induction melting and vacuum casting technology, obtains the more uniform fine and closely woven MCrAlY alloy of microstructure.
Description
Technical field
The invention belongs to technical field of alloy, and in particular to a kind of MCrAlY alloy and preparation method thereof.
Background technology
With the development of science and technology, the combination property to turbogenerator proposes higher requirement, starts to improve
Machine thermodynamic cycle performance, improves thrust-weight ratio, it is desirable to high turbine inlet temperature (TIT).When the thrust-weight ratio of engine reaches 20, combustion gas
Inlet temperature is up to 2000 DEG C, and this temperature is beyond manufacture turbo blade and the nickel base superalloy institute energy of guide vane
The temperature born.Also it is difficult to bear even if using inter-metallic compound material and using directional solidification technique.And if turbine leaf
Piece temperature often reduces by 15 DEG C, and its duration extends 1 times.In this case, the thermal barrier coating of engine blade high temperature is resisted
Just arise at the historic moment, as one of most active research topic in international high temperature coating field in recent years.
Typical thermal barrier coating be coated on it is anti-oxidant based on MCrAlY (M=Ni, Co or the two have concurrently) in substrate
Tack coat, and anti-thermal conductive ceramic top layer composition.In high-temperature oxidation process, one can be formed between tack coat and anti-thermal conductive ceramic layer
Layer thermal growth oxide (TGO), prevents oxygen from further spreading, plays a part of protecting base material not weather.
MCrAlY alloy is characterized in that high-melting-point, fragility is big, hardness is high.Current MCrAlY alloy manufacture method is mainly portion
Mix powder precompressed with other elements after dividing element pre-alloyed and sinter, it is then machining.Such as number of patent application
Alloy preparation method involved by CN201510541909, but alloy density prepared by this method is low, porosity is big, oxygen content
High, percent defective is high；MCrAlY alloy complicated component, solidification temperature range is wide, solidifies in the pasty state, riser feeding apart from short, for
Slender rod piece target, easily forms shrinkage porosite in centre when common casting solidifies, influences target quality.
The content of the invention
In order to solve the problem of prior art is present, the invention provides a kind of MCrAlY alloy and preparation method thereof, institute
State MCrAlY alloy and add Zr, Si, Ti, Hf and Ta in existing MCrAlY alloy, to improve the mechanics of MCrAlY alloy
Performance and oxidation resistance.The preparation method of the MCrAlY alloy is combined using vacuum induction melting and vacuum casting technology
Mode, obtain the more uniform fine and closely woven MCrAlY alloy of microstructure.
It is an object of the invention to provide a kind of MCrAlY alloy.
Another object of the present invention is to provide a kind of preparation method of MCrAlY alloy.
According to the MCrAlY alloy of the present invention, including Co, Ni, Cr, Al, Y, Zr, Si, Ti, Hf and Ta；
The parts by weight of each component are as follows in the MCrAlY alloy：40-60 parts of Co；40-60 parts of Ni；Cr 20-40
Part；5-12 parts of Al；0.3-2 parts of Y；0.3-2 parts of Zr；0.3-2 parts of Si；0.3-2 parts of Ti；0.3-2 parts of Hf；Ta 0.3-2
Part.
According to the MCrAlY alloy of the present invention, wherein, the parts by weight of each component are as follows in the MCrAlY alloy：Co
45-55 parts；45-55 parts of Ni；25-35 parts of Cr；7-10 parts of Al；0.5-1.5 parts of Y；0.6-1.4 parts of Zr；Si 0.35-1.85
Part；0.4-1.8 parts of Ti；0.5-1.6 parts of Hf；0.45-1.75 parts of Ta.
According to the MCrAlY alloy of the present invention, wherein, the parts by weight of each component are as follows in the MCrAlY alloy：Co
50 parts；50 parts of Ni；30 parts of Cr；9 parts of Al；1.1 parts of Y；1.2 parts of Zr；1.3 parts of Si；1.1 parts of Ti；1.3 parts of Hf；Ta
1.2 part.
According to the MCrAlY alloy of the present invention, wherein, the particle diameter of the metallographic crystal grain of the MCrAlY alloy 200 μm with
Under.
According to the preparation method of the MCrAlY alloy of the present invention, wherein, the preparation method comprises the following steps：
A, by Co, Ni, Cr, Al, Y, Zr, Si, Ti, Hf and Ta simple substance according to proportioning carry out vacuum induction melting, closed
Golden liquation；
B, the alloy molten solution vacuum casting that step A is obtained obtained into the MCrAlY alloy into mould, after cooling.
According to the preparation method of the MCrAlY alloy of the present invention, wherein, in step B, the temperature of alloy molten solution during vacuum casting
Degree is higher than the fusing point of the MCrAlY alloy 50-80 DEG C.
According to the preparation method of the MCrAlY alloy of the present invention, wherein, in step B, the temperature of alloy molten solution during vacuum casting
Spend for 1510-1550 DEG C.
According to the present invention MCrAlY alloy preparation method, wherein, in step B, during vacuum casting after, the alloy melt
The cooldown rate of liquid is 10-103℃/s。
According to the preparation method of the MCrAlY alloy of the present invention, wherein, after step B, in addition to step C：Step B is obtained
The MCrAlY alloy cut into cylinder, then polishing obtain alloy target material.
According to the preparation method of the MCrAlY alloy of the present invention, wherein, in step B, carry out vacuum using casting mould and pour
Casting；
The casting mould include die ontology and rising head, the die ontology include side wall and bottom plate, the side wall and
Bottom plate surrounds an open-topped semi-surrounding structure, and the rising head is arranged on the top of the die ontology, the mould sheet
The internal diameter of body from top to bottom gradually increases, and the madial wall of the rising head is provided with a circle heat-preservation cotton；The die ontology uses copper
Into the rising head is made of graphite.
Beneficial effects of the present invention are:
1st, on the basis of existing MCrAlY alloy, Zr, Si, Ti, Hf and Ta element are with the addition of, Al can be coordinated to be formed
Fine and close high temperature oxidation resisting layer, has significantly delayed oxygen internally to spread, has extended the thermal shock service life cycle of thermal barrier coating.Newly add
Plus element and Y element be engaged, can improve the adhesiveness of TGO layer and tack coat, suppress the high-temperature oxydation of tack coat, and
Cr elements can be coordinated to promote TGO generation, coordinate Al elements to generate the high temperature oxidation resisting layer of densification, Co has corrosion and heat resistant
Property, Ni has inoxidizability, after Zr, Si, Ti, Hf and Ta element is added, the mechanical property and antioxygen of MCrAlY alloy
Change performance to have been lifted.
2nd, the particle diameter of the metallographic crystal grain of the MCrAlY alloy is below 200 μm, and with density is high, that porosity is small is excellent
Point.
3rd, the preparation method of the MCrAlY alloy, the side being combined using vacuum induction melting and vacuum casting technology
Formula, obtains the more uniform fine and closely woven MCrAlY alloy of microstructure, solves that prior art yield rate is low, ingot casting microstructure is thick
Greatly, uneven, the easy erosion metal die of alloy molten solution causes the problem of alloy impurity constituent content is raised.
4th, the preparation method, the temperature of alloy molten solution during control vacuum casting, it is to avoid relatively low in copper mold chilling in temperature
When produce " cold shut " phenomenon, form small shrinkage cavity in the higher interdendritic in ingot casting of temperature, influence the consistency of alloy.
5th, the preparation method, controls the cooling velocity of alloy molten solution, it is ensured that large scale ingot casting will not in process of setting
Ruptured due to thermal stress.
6th, the preparation method, by alloy target material is obtained after MCrAlY alloy cutting polishing, there is provided can stablize to carry out
The MCrAlY alloy target of plated film.
7th, the preparation method, using the casting mould specially designed, due to casting mould cavity diameter from the bottom to top
Gradually expand, radiate gradually slack-off so that the alloy liquid of high temperature realizes consecutive solidification from bottom to top；So, strand upper surface
Process of setting in be always maintained at liquid as feeding source one big, it is to avoid the shrinkage porosite formed in the middle part of stock ingot casting, and same
The influence of thermal stress is essentially eliminated on one horizontal plane.The MCrAlY alloy prepared can be directly over follow-up heat treatment
Stress is eliminated, final MCrAlY alloy target is obtained after machining.MCrAlY alloy is produced with the powder metallurgy of current main flow
Target is compared, and production cost is substantially reduced, and quality is significantly improved.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the accompanying drawing used required in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Schematic diagram when Fig. 1 is embodiment casting；
Fig. 2 is the metallographic structure figure for the MCrAlY alloy that embodiment 5 is obtained.
Reference
1- casting moulds；2- sides wall；3- bottom plates；4- rising heads；5- heat-preservation cottons.
Embodiment
To make the object, technical solutions and advantages of the present invention clearer, technical scheme will be carried out below
Detailed description.Obviously, described embodiment is only a part of embodiment of the invention, rather than whole embodiments.Base
Embodiment in the present invention, those of ordinary skill in the art are resulting on the premise of creative work is not made to be owned
Other embodiment, belongs to the scope that the present invention is protected.
The weight of each parts by weight is 1kg in following examples.
Embodiment 1
A kind of MCrAlY alloy, including Co, Ni, Cr, Al, Y, Zr, Si, Ti, Hf and Ta；Each group in the MCrAlY alloy
The parts by weight divided are as follows：
40 parts of Co；60 parts of Ni；20 parts of Cr；12 parts of Al；0.3 part of Y；2 parts of Zr；0.3 part of Si；2 parts of Ti；Hf 0.3
Part；2 parts of Ta.
The preparation method of the MCrAlY alloy, comprises the following steps：
A, by Co, Ni, Cr, Al, Y, Zr, Si, Ti, Hf and Ta simple substance according to proportioning carry out vacuum induction melting, closed
Golden liquation；
B, the alloy molten solution vacuum casting for obtaining step A are into mould, and the temperature of alloy molten solution compares institute during vacuum casting
The fusing point for stating MCrAlY alloy is high 50 DEG C, the MCrAlY alloy is obtained after cooling, the cooldown rate of the alloy molten solution is 102
℃/s。
In the present embodiment, the particle diameter of the metallographic crystal grain of the MCrAlY alloy is below 200 μm.
The MCrAlY alloy that the present embodiment is obtained is coated in after hot-end component as thermal barrier coating, to nickel alloy base hot junction
Part carries out thermal shock resistance test, in high temperature air stove, under 1050 degrees Celsius of air atmospheres, is incubated 30 minutes,
Then air is cooled to room temperature in 5 minutes, and so repeatedly 300 times, thermal barrier coating is not fallen off, and is closed using only M, Cr, Al and Y
Golden obtained thermal barrier coating, 185 times are to come off.
Embodiment 2
A kind of MCrAlY alloy, including Co, Ni, Cr, Al, Y, Zr, Si, Ti, Hf and Ta；Each group in the MCrAlY alloy
The parts by weight divided are as follows：
60 parts of Co；40 parts of Ni；40 parts of Cr；5 parts of Al；2 parts of Y；0.3 part of Zr；2 parts of Si；0.3 part of Ti；2 parts of Hf；
0.3 part of Ta.
The preparation method of the MCrAlY alloy, comprises the following steps：
A, by Co, Ni, Cr, Al, Y, Zr, Si, Ti, Hf and Ta simple substance according to proportioning carry out vacuum induction melting, closed
Golden liquation；
B, the alloy molten solution vacuum casting for obtaining step A are into mould, and the temperature of alloy molten solution compares institute during vacuum casting
The fusing point for stating MCrAlY alloy is high 80 DEG C, the MCrAlY alloy is obtained after cooling, the cooldown rate of the alloy molten solution is 10
℃/s。
In the present embodiment, the particle diameter of the metallographic crystal grain of the MCrAlY alloy is below 200 μm.
The MCrAlY alloy that the present embodiment is obtained is coated in after hot-end component as thermal barrier coating, to nickel alloy base hot junction
Part carries out thermal shock resistance test, in high temperature air stove, under 1050 degrees Celsius of air atmospheres, is incubated 30 minutes,
Then air is cooled to room temperature in 5 minutes, and so repeatedly 300 times, thermal barrier coating is not fallen off, and is closed using only M, Cr, Al and Y
Golden obtained thermal barrier coating, 185 times are to come off.
Embodiment 3
A kind of MCrAlY alloy, including Co, Ni, Cr, Al, Y, Zr, Si, Ti, Hf and Ta；Each group in the MCrAlY alloy
The parts by weight divided are as follows：
45 parts of Co；55 parts of Ni；25 parts of Cr；10 parts of Al；0.5 part of Y；1.4 parts of Zr；0.35 part of Si；1.8 parts of Ti；
0.5 part of Hf；1.75 parts of Ta.
The preparation method of the MCrAlY alloy, comprises the following steps：
A, by Co, Ni, Cr, Al, Y, Zr, Si, Ti, Hf and Ta simple substance according to proportioning carry out vacuum induction melting, closed
Golden liquation；
B, the alloy molten solution vacuum casting for obtaining step A are into mould, and the temperature of alloy molten solution is during vacuum casting
1510 DEG C, the MCrAlY alloy is obtained after cooling, the cooldown rate of the alloy molten solution is 102℃/s；
C, the MCrAlY alloy that step B is obtained cut into cylinder, then polishing obtains alloy target material.
In the present embodiment, the particle diameter of the metallographic crystal grain of the MCrAlY alloy is below 200 μm.
The MCrAlY alloy that the present embodiment is obtained is coated in after hot-end component as thermal barrier coating, to nickel alloy base hot junction
Part carries out thermal shock resistance test, in high temperature air stove, under 1050 degrees Celsius of air atmospheres, is incubated 30 minutes,
Then air is cooled to room temperature in 5 minutes, and so repeatedly 300 times, thermal barrier coating is not fallen off, and is closed using only M, Cr, Al and Y
Golden obtained thermal barrier coating, 185 times are to come off.
Embodiment 4
A kind of MCrAlY alloy, including Co, Ni, Cr, Al, Y, Zr, Si, Ti, Hf and Ta；Each group in the MCrAlY alloy
The parts by weight divided are as follows：
55 parts of Co；45 parts of Ni；35 parts of Cr；7 parts of Al；1.5 parts of Y；0.6 part of Zr；1.85 parts of Si；0.4 part of Ti；Hf
1.6 part；0.45 part of Ta.
The preparation method of the MCrAlY alloy, comprises the following steps：
A, by Co, Ni, Cr, Al, Y, Zr, Si, Ti, Hf and Ta simple substance according to proportioning carry out vacuum induction melting, closed
Golden liquation；
B, the alloy molten solution vacuum casting for obtaining step A are into mould, and the temperature of alloy molten solution is during vacuum casting
1550 DEG C, the MCrAlY alloy is obtained after cooling, the cooldown rate of the alloy molten solution is 102℃/s；
C, the MCrAlY alloy that step B is obtained cut into cylinder, then polishing obtains alloy target material.
In step B, vacuum casting is carried out using casting mould 1；
The casting mould 1 includes die ontology and rising head 4, and the die ontology includes side wall 2 and bottom plate 3, the side
Wall 2 and bottom plate 3 surround an open-topped semi-surrounding structure, and the rising head 4 is arranged on the top of the die ontology, described
The internal diameter of die ontology from top to bottom gradually increases, and the madial wall 2 of the rising head 4 is provided with a circle heat-preservation cotton 5；The die ontology
It is made of copper, the rising head 4 is made of graphite.
In the present embodiment, the particle diameter of the metallographic crystal grain of the MCrAlY alloy is below 200 μm.
The MCrAlY alloy that the present embodiment is obtained is coated in after hot-end component as thermal barrier coating, to nickel alloy base hot junction
Part carries out thermal shock resistance test, in high temperature air stove, under 1050 degrees Celsius of air atmospheres, is incubated 30 minutes,
Then air is cooled to room temperature in 5 minutes, and so repeatedly 300 times, thermal barrier coating is not fallen off, and is closed using only M, Cr, Al and Y
Golden obtained thermal barrier coating, 185 times are to come off.
Embodiment 5
A kind of MCrAlY alloy, including Co, Ni, Cr, Al, Y, Zr, Si, Ti, Hf and Ta；Each group in the MCrAlY alloy
The parts by weight divided are as follows：
50 parts of Co；50 parts of Ni；30 parts of Cr；9 parts of Al；1.1 parts of Y；1.2 parts of Zr；1.3 parts of Si；1.1 parts of Ti；Hf
1.3 part；1.2 parts of Ta.
The preparation method of the MCrAlY alloy, comprises the following steps：
A, by Co, Ni, Cr, Al, Y, Zr, Si, Ti, Hf and Ta simple substance according to proportioning carry out vacuum induction melting, closed
Golden liquation；
B, the alloy molten solution vacuum casting for obtaining step A are into mould, and the temperature of alloy molten solution is during vacuum casting
1530 DEG C, the MCrAlY alloy is obtained after cooling, the cooldown rate of the alloy solution is 102℃/s；
C, the MCrAlY alloy that step B is obtained cut into cylinder, then polishing obtains alloy target material.
In step B, vacuum casting is carried out using casting mould 1；
The casting mould 1 includes die ontology and rising head 4, and the die ontology includes side wall 2 and bottom plate 3, the side
Wall 2 and bottom plate 3 surround an open-topped semi-surrounding structure, and the rising head 4 is arranged on the top of the die ontology, described
The internal diameter of die ontology from top to bottom gradually increases, and the madial wall 2 of the rising head 4 is provided with a circle heat-preservation cotton 5；The die ontology
It is made of copper, the rising head 4 is made of graphite.
In the present embodiment, the particle diameter of the metallographic crystal grain of the MCrAlY alloy is below 200 μm.
10mm × 10mm sample is taken from obtained alloy target material, and metallographic is inlayed, mechanical polishing, corrodes crystal grain, uses
Metallography microscope sem observation microscopic structure, metallographic structure is as shown in Figure 2.From Fig. 2, it can be seen that the alloy target material tissue crystal grain is thin
It is small, uniformly.
The MCrAlY alloy that the present embodiment is obtained is coated in after hot-end component as thermal barrier coating, to nickel alloy base hot junction
Part carries out thermal shock resistance test, in high temperature air stove, under 1050 degrees Celsius of air atmospheres, is incubated 30 minutes,
Then air is cooled to room temperature in 5 minutes, and so repeatedly 300 times, thermal barrier coating is not fallen off, and is closed using only M, Cr, Al and Y
Golden obtained thermal barrier coating, 185 times are to come off.
The foregoing is only a specific embodiment of the invention, but protection scope of the present invention is not limited thereto, any
Those familiar with the art the invention discloses technical scope in, change or replacement can be readily occurred in, should all be contained
Cover within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (10)
1. a kind of MCrAlY alloy, it is characterised in that including Co, Ni, Cr, Al, Y, Zr, Si, Ti, Hf and Ta；
The parts by weight of each component are as follows in the MCrAlY alloy：
40-60 parts of Co；40-60 parts of Ni；20-40 parts of Cr；5-12 parts of Al；0.3-2 parts of Y；0.3-2 parts of Zr；Si 0.3-2
Part；0.3-2 parts of Ti；0.3-2 parts of Hf；0.3-2 parts of Ta.
2. MCrAlY alloy according to claim 1, it is characterised in that the parts by weight of each component in the MCrAlY alloy
Number is as follows：
45-55 parts of Co；45-55 parts of Ni；25-35 parts of Cr；7-10 parts of Al；0.5-1.5 parts of Y；0.6-1.4 parts of Zr；Si
0.35-1.85 parts；0.4-1.8 parts of Ti；0.5-1.6 parts of Hf；0.45-1.75 parts of Ta.
3. MCrAlY alloy according to claim 2, it is characterised in that the parts by weight of each component in the MCrAlY alloy
Number is as follows：
50 parts of Co；50 parts of Ni；30 parts of Cr；9 parts of Al；1.1 parts of Y；1.2 parts of Zr；1.3 parts of Si；1.1 parts of Ti；Hf 1.3
Part；1.2 parts of Ta.
4. MCrAlY alloy according to claim 1, it is characterised in that the particle diameter of the metallographic crystal grain of the MCrAlY alloy
Below 200 μm.
5. a kind of preparation method for preparing any MCrAlY alloys of claim 1-4, it is characterised in that the preparation method
Comprise the following steps：
A, by Co, Ni, Cr, Al, Y, Zr, Si, Ti, Hf and Ta simple substance according to proportioning carry out vacuum induction melting, obtain alloy melt
Liquid；
B, the alloy molten solution vacuum casting that step A is obtained obtained into the MCrAlY alloy into mould, after cooling.
6. preparation method according to claim 5, it is characterised in that in step B, the temperature of alloy molten solution during vacuum casting
It is higher than the fusing point of the MCrAlY alloy 50-80 DEG C.
7. preparation method according to claim 5, it is characterised in that in step B, the temperature of alloy molten solution during vacuum casting
For 1510-1550 DEG C.
8. preparation method according to claim 5, it is characterised in that in step B, during vacuum casting after, the alloy melts
The cooldown rate of liquid is 10-103℃/s。
9. preparation method according to claim 5, it is characterised in that after step B, in addition to step C：Step B is obtained
The MCrAlY alloy cut into cylinder, then polishing obtain alloy target material.
10. preparation method according to claim 9, it is characterised in that in step B, carries out vacuum using casting mould and pours
Casting；
The casting mould includes die ontology and rising head, and the die ontology includes side wall and bottom plate, the side wall and bottom plate
Surround an open-topped semi-surrounding structure, the rising head is arranged on the top of the die ontology, the die ontology from
Under gradually increase to upper internal diameter, the madial wall of the rising head is provided with a circle heat-preservation cotton；The die ontology is made of copper, institute
Rising head is stated to be made of graphite.
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| CN108380840A (en) * | 2018-04-26 | 2018-08-10 | 常州金坛恒旭科技有限公司 | The fast cooling shaping of copper-base catalyst alloy is circumferentially positioned to pour mold |
| CN108754495A (en) * | 2018-06-25 | 2018-11-06 | 广东省新材料研究所 | A kind of composite thermal barrier coating and the preparation method and application thereof |
| CN111893363A (en) * | 2020-07-31 | 2020-11-06 | 西安交通大学 | NiCoCr-based medium-entropy alloy with excellent strength and plasticity matching and preparation method thereof |
| CN113881912A (en) * | 2021-10-09 | 2022-01-04 | 矿冶科技集团有限公司 | Nano oxide dispersion type MCrAlY anti-oxidation coating and preparation method thereof |
| CN115094392A (en) * | 2022-07-06 | 2022-09-23 | 天津华瑞新材料科技有限公司 | Preparation method of fine-grain high-density nickel-chromium-aluminum-yttrium-silicon alloy target material |
| CN115747795A (en) * | 2022-12-05 | 2023-03-07 | 江苏大学 | Thermal barrier coating bonding layer with long service life and preparation method thereof |
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| CN111893363A (en) * | 2020-07-31 | 2020-11-06 | 西安交通大学 | NiCoCr-based medium-entropy alloy with excellent strength and plasticity matching and preparation method thereof |
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| CN115747795A (en) * | 2022-12-05 | 2023-03-07 | 江苏大学 | Thermal barrier coating bonding layer with long service life and preparation method thereof |
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