CN109761590A - A kind of high-temperature resistant aluminium oxide composite ceramic material and preparation method thereof - Google Patents
A kind of high-temperature resistant aluminium oxide composite ceramic material and preparation method thereof Download PDFInfo
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- CN109761590A CN109761590A CN201910201686.3A CN201910201686A CN109761590A CN 109761590 A CN109761590 A CN 109761590A CN 201910201686 A CN201910201686 A CN 201910201686A CN 109761590 A CN109761590 A CN 109761590A
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Abstract
The invention discloses a kind of high-temperature resistant aluminium oxide composite ceramic materials, be by following parts by weight component be raw material: 70~85 parts of aluminium oxide, 7~15 parts of chromium oxide, 5~13 parts of germanium oxide, 4~7 parts of magnesia, 9~16 parts of calcium silicates, 8~15 parts of silica solution, 2~5 parts of polyvinyl alcohol, 0.5~3 part of ammonium polyacrylate, powder is made and is pressed into idiosome, is prepared through 1400~1800 DEG C of high temperature sinterings.The high-temperature stability that high-temperature resistant aluminium oxide composite ceramic material prepared by the present invention has had can bear 2000 DEG C of high temperature, and anticorrosion effect is good, the components material be especially suitable for aero-engine.
Description
Technical field
The invention belongs to high-temperature material technical fields, are related to a kind of ceramic matric composite resistant to high temperature, more particularly to
A kind of alumina composite ceramic material of superhigh temperature resistant and the preparation method of the composite material.
Background technique
Aero-engine is a kind of power device with complicated aerodynamic force, heating power and structure, for the weight of aircraft equipment
The property wanted is self-evident.Since its operating condition is harsh, what most of components must be strong using heat-resist and resistance to corrosion
Material manufacture.
In the development course of aero-engine, the components for the turbojet that the end of the forties develops have used height
Temperature alloy, the basic demand to components: 1, operating temperature is generally not more than 650 DEG C, and 2, manufactured using resistant material.With
The application and development of cast superalloy, the sixties, turbofan was succeeded in developing, and operating temperature is further
It is promoted.The seventies, the appearance of powder metallurgy superalloy turbine disc make turbine inlet temperature (TIT) be increased to 1370 DEG C.With aviation
The increasingly raising of engine performance, chamber temperature are also constantly increasing, and the operating condition of materials for aeroengines is increasingly disliked
It is bad, high requirement is proposed to the performance of materials for aeroengines, especially heat-resisting quantity.
Current heat-resisting material mainly has high temperature alloy and ceramic matric composite, and it includes casting that high temperature alloy is again main
High temperature alloy and powder metallurgy superalloy.
Cast superalloy is the high-temperature alloy material that components are directly prepared with casting method, can often obtain and compare
High heat resisting temperature.If CN 105200521A discloses a kind of no rhenium low-density nickel-base high-temperature single crystal alloy, heat resisting temperature can be with
Reach 1100 DEG C or so.However, being easy to appear segregation since the grain size of cast superalloy part is bigger, lead to its height
Warm fatigue life and creep rupture strength are generally poor.
Powder metallurgy superalloy is using the high temperature alloy of powder metallurgy process preparation, and this technology solves high temperature casting and closes
Gold segregation, thermal process performance difference disadvantage.If FGH97 is a kind of nickel base gamma phase precipitation strength type powder metallurgy high-temperature alloy, with
Similar casting, forging high temperature alloy are compared, and have many advantages, such as that even tissue, crystal grain are tiny, surrender degree is high and fatigue behaviour is good.But its
It can only bear 700 DEG C of operating temperature.
Ceramic matric composite is using ceramics as matrix, with a kind of composite material formed after various fiber composites.Ceramics
Based composites have excellent high temperature resistance, are also usually applied to high-temperature material field.Wherein, based on the pottery of SiC matrix
Porcelain based composites are widely used in high-temperature structural components since high temperature resistance is good.As CN 106966738A is disclosed
A kind of ceramic matric composite of SiC matrix, heat resistance is up to 1450 DEG C.
However, SiC can be aoxidized when being higher than 1600 DEG C, it will cracked or hole has seriously affected material
Performance and application prospect.
Now, the turbine inlet temperature (TIT) of most aero-engines is at 1300 DEG C or more, and the modern prototype version developed
The turbine inlet temperature (TIT) of engine has reached 1650 DEG C, and desired ideal components can be more up to 1930 DEG C.With more
The research and development of advanced engine, the high temperature resistance of components are required higher and higher that existing heat-resisting material is very
Difficulty is used under the conditions of excessively high temperature.
A kind of material with excellent high temperature resistance how is prepared as a result, is had in aero-engine research field
Important realistic meaning.
Summary of the invention
The object of the present invention is to provide the preparations of a kind of novel high-temperature resistant aluminium oxide composite ceramic material and its material
Method.
It is raw material that high-temperature resistant aluminium oxide composite ceramic material of the present invention, which is by the component of following parts by weight: oxidation
70~85 parts of aluminium, 7~15 parts of chromium oxide, 5~13 parts of germanium oxide, 4~7 parts of magnesia, 9~16 parts of calcium silicates, silica solution 8~15
Part, 2~5 parts of polyvinyl alcohol, 0.5~3 part of ammonium polyacrylate, are made powder and are pressed into idiosome, through 1400~1800 DEG C of high temperature
Sintering is prepared.
Wherein, the powder is preferably used cold isostatic compaction to suppress to obtain idiosome by the present invention.
Specifically, the cold isostatic compaction is 60~120s of processing under the operating pressure of 150~300Mpa.
In turn, the present invention can use various breaking methods to crush to obtain powder the raw material.
Preferably, the present invention be by the raw material mixing and water adding progress ball milling slurry is made after, then carry out mist projection granulating with
Obtain powder.
More specifically, the dosage of water is the 50~80% of raw material weight in described plus water for ball milling.
Further, the present invention by the idiosome high temperature sintering 5~for 24 hours at a temperature of 1400~1800 DEG C.
In turn, the present invention also provides the more specific preparation method of the high-temperature resistant aluminium oxide composite ceramic material, packets
Include following steps:
1), by the aluminium oxide of the parts by weight, chromium oxide, germanium oxide, magnesia, calcium silicates, polyvinyl alcohol, ammonium polyacrylate
It is added in sand mill together with the water of the dosage, 8~15h of ball milling, adds the silica solution and ball milling 1 of the parts by weight
Manufactured slurry mist projection granulating is obtained powder by~2h；
2), by the powder of preparation, cold isostatic compaction handles 60~120s under the operating pressure of 150~300Mpa, is prepared
Green body；
3), by green body at a temperature of 1400~1800 DEG C high temperature sintering 5~for 24 hours, it is compound that the high-temperature resistant aluminium oxide is prepared
Ceramic material.
After tested, the high-temperature stability that high-temperature resistant aluminium oxide composite ceramic material prepared by the present invention has not only had, can
To bear 2000 DEG C of high temperature, and anticorrosion effect is good, impregnates one week in dilute hydrochloric acid solution and is not corroded.
High-temperature resistant aluminium oxide composite ceramic material prepared by the present invention is applied widely, be especially suitable for aero-engine
Components material.
Specific embodiment
Following embodiments are only the preferred technical solution of the present invention, are not used to carry out any restrictions to the present invention.For
For those skilled in the art, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made
Any modification, equivalent substitution, improvement and etc., should all be included in the protection scope of the present invention.
Embodiment 1.
Weigh 72kg aluminium oxide, 9kg chromium oxide, 5kg germanium oxide, 5kg magnesia, 11kg calcium silicates, 2kg polyvinyl alcohol,
Ball milling 8h in sand mill is added in 1kg ammonium polyacrylate and 63kg water together, adds 12kg silica solution, continues ball milling 1.5h, out
Material obtains slurry.
Slurry mist projection granulating is obtained into pelletizing, is placed in cold isostatic press, with the briquetting pressure pressure maintaining 60s of 180Mpa,
Molding obtains green body.
By idiosome be heated to 1500 DEG C be sintered and keep the temperature 5h after, high-temperature resistant aluminium oxide composite ceramic material is prepared.
The above-mentioned high-temperature stability for preparing composite ceramic material is tested using Two-color Measure Thermometer.
High-temperature resistant aluminium oxide composite ceramic material is cut into the sample of 2mm thickness, is placed on Heating Experiment platform, is opened double
Instruction hot spot is directed at sample by color temperature measurer.Laser is opened, setting laser power controls its temperature and stablizes at 1990 DEG C,
Prolonged exposure 30min.Laser is closed, sample is stood into 2h natural cooling.Sample surfaces are observed, do not leave any heating trace
Mark, it is more puncherless.
Above-mentioned sample is immersed in the dilute hydrochloric acid solution of mass fraction 10%, taken out after impregnating 7 days at room temperature, observes sample
Surface is not corroded.
Embodiment 2.
Weigh 79kg aluminium oxide, 13kg chromium oxide, 9kg germanium oxide, 6kg magnesia, 14kg calcium silicates, 4kg polyvinyl alcohol,
Ball milling 12h in sand mill is added in 2kg ammonium polyacrylate and 88kg water together, adds 14kg silica solution, continues ball milling 2h, out
Material obtains slurry.
Slurry mist projection granulating is obtained into pelletizing, is placed in cold isostatic press, with the briquetting pressure pressure maintaining 90s of 200Mpa,
Molding obtains green body.
By idiosome be heated to 1600 DEG C be sintered and keep the temperature 12h after, high-temperature resistant aluminium oxide composite ceramic material is prepared.
According to the high-temperature stability of the composite ceramic material of 1 method of embodiment test preparation, and it is steady to control laser temperature
It is scheduled on 2000 DEG C.Sample surfaces are observed, do not leave any heating traces, it is more puncherless.
Above-mentioned sample is immersed in the dilute hydrochloric acid solution of mass fraction 10%, taken out after impregnating 8 days at room temperature, observes sample
Surface is not corroded.
Embodiment 3.
Weigh 76kg aluminium oxide, 11kg chromium oxide, 12kg germanium oxide, 5kg magnesia, 13kg calcium silicates, 3kg polyethylene
Ball milling 12h in sand mill is added in alcohol, 2.5kg ammonium polyacrylate and 92kg water together, adds 12kg silica solution, continues ball milling
2h, discharging obtain slurry.
Slurry mist projection granulating is obtained into pelletizing, is placed in cold isostatic press, with the briquetting pressure pressure maintaining 110s of 250Mpa,
Molding obtains green body.
By idiosome be heated to 1800 DEG C be sintered and keep the temperature 20h after, high-temperature resistant aluminium oxide composite ceramic material is prepared.
According to the high-temperature stability of the composite ceramic material of 1 method of embodiment test preparation, and it is steady to control laser temperature
It is scheduled on 2010 DEG C.Sample surfaces are observed, do not leave any heating traces, it is more puncherless.
Above-mentioned sample is immersed in the dilute hydrochloric acid solution of mass fraction 10%, taken out after impregnating 8 days at room temperature, observes sample
Surface is not corroded.
Embodiment 4.
Weigh 82kg aluminium oxide, 9kg chromium oxide, 11kg germanium oxide, 5kg magnesia, 14kg calcium silicates, 4kg polyvinyl alcohol,
Ball milling 13h in sand mill is added in 1.5kg ammonium polyacrylate and 87kg water together, adds 14kg silica solution, continues ball milling
1.5h, discharging obtain slurry.
Slurry mist projection granulating is obtained into pelletizing, is placed in cold isostatic press, with the briquetting pressure pressure maintaining 100s of 200Mpa,
Molding obtains green body.
By idiosome be heated to 1650 DEG C be sintered and keep the temperature 15h after, high-temperature resistant aluminium oxide composite ceramic material is prepared.
According to the high-temperature stability of the composite ceramic material of 1 method of embodiment test preparation, and it is steady to control laser temperature
It is scheduled on 2020 DEG C.Sample surfaces are observed, do not leave any heating traces, it is more puncherless.
Above-mentioned sample is immersed in the dilute hydrochloric acid solution of mass fraction 10%, taken out after impregnating 9 days at room temperature, observes sample
Surface is not corroded.
Claims (7)
1. it is raw material: aluminium oxide 70~85 that a kind of high-temperature resistant aluminium oxide composite ceramic material, which is by the component of following parts by weight,
Part, 7~15 parts of chromium oxide, 5~13 parts of germanium oxide, 4~7 parts of magnesia, 9~16 parts of calcium silicates, 8~15 parts of silica solution, poly- second
2~5 parts of enol, 0.5~3 part of ammonium polyacrylate, are made powder and are pressed into idiosome, prepare through 1400~1800 DEG C of high temperature sinterings
It obtains.
2. high-temperature resistant aluminium oxide composite ceramic material according to claim 1, it is characterized in that by the powder using cold etc.
Hydrostatic profile is suppressed to obtain idiosome.
3. high-temperature resistant aluminium oxide composite ceramic material according to claim 2, it is characterized in that the cold isostatic compaction
It is 60~120s of processing under the operating pressure of 150~300Mpa.
4. high-temperature resistant aluminium oxide composite ceramic material according to claim 1, it is characterized in that by the raw material mixing and water adding
It carries out ball milling and slurry is made, then carry out mist projection granulating to obtain powder.
5. high-temperature resistant aluminium oxide composite ceramic material according to claim 4, it is characterized in that the dosage of the water is raw material
The 50~80% of weight.
6. high-temperature resistant aluminium oxide composite ceramic material according to claim 1, it is characterized in that the high temperature sintering time is 5
~for 24 hours.
7. a kind of preparation method of high-temperature resistant aluminium oxide composite ceramic material, comprising the following steps:
1), by 70~85 parts by weight of alumina, 7~15 parts by weight chromium oxide, 5~13 parts by weight germanium oxides, 4~7 parts by weight oxygen
Change magnesium, 9~16 parts by weight calcium silicates, 2~5 weight account polyethylene alcohol, 0.5~3 parts by weight of polypropylene acid ammonium and raw material weight 50
~80% water is added in sand mill together, 8~15h of ball milling, adds the silica solution and 1~2h of ball milling of 8~15 parts by weight,
Manufactured slurry mist projection granulating is obtained into powder；
2), by the powder of preparation, cold isostatic compaction handles 60~120s under the operating pressure of 150~300Mpa, is prepared
Green body；
3), by green body at a temperature of 1400~1800 DEG C high temperature sintering 5~for 24 hours, it is compound that the high-temperature resistant aluminium oxide is prepared
Ceramic material.
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