CN107602096B - A kind of method of the modified oxidized aluminium base ceramics large-size components surface part nanometer eutectic Strengthening and Toughening of high energy oxyacetylene torch line - Google Patents
A kind of method of the modified oxidized aluminium base ceramics large-size components surface part nanometer eutectic Strengthening and Toughening of high energy oxyacetylene torch line Download PDFInfo
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Abstract
A kind of method of the modified oxidized aluminium base ceramics large-size components surface part nanometer eutectic Strengthening and Toughening of high energy oxyacetylene torch line, it is related to a kind of method of modified oxidized aluminium base ceramics large-size components surface part nanometer eutectic Strengthening and Toughening.The present invention is to solve current high-melting-point alumina-based eutectic ceramic and be difficult to the technical issues of preparing large-size components.The present invention: one, the stepped combined preparation of alumina-based eutectic ceramic powder；Two, pulsed discharge plasma sintering densification；Three, high energy oxyacetylene torch line nano surface eutectic Strengthening and Toughening is handled.High energy oxyacetylene torch line part nanometer eutectic Strengthening and Toughening is realized on large scale alumina base complex phase ceramic surface using the method for the present invention, the nanometer eutectic Strengthening and Toughening layer that microstructure scale regulates and controls in 100 μm~2000 μm in 5nm-100nm, thickness is obtained, this complex technique achievees the purpose that take into account eutectic ceramic hot properties and large scale complex phase ceramic processability.
Description
Technical field
The present invention relates to a kind of methods of modified oxidized aluminium base ceramics large-size components surface part nanometer eutectic Strengthening and Toughening.
Background technique
Alumina base eutectic complex phase ceramic has high-melting-point, high specific strength, high antioxidant and excellent corrosion resistance, and
Good mechanical property and structure stability can be kept under the superhigh temperature oxidation environment close to fusing point (> 1650 DEG C), be recognized
For be most be potential become a new generation can under high temperature oxidation stability atmosphere long service preferred superhigh temperature structural material.In combustion gas
Turbine engine blade, nozzle and liner, supersonjc missile bullet, rocket engine larynx lining, space shuttle nose cone and wing
The key positions such as leading edge have a wide range of applications potentiality prospect.
Currently, mainly including Bridgman method, epitaxial growth method, floating zone for alumina-based eutectic ceramic technology of preparing
Molten method, laser zone remelting method and micro- pull method etc., wherein Bridgman method is can uniquely to prepare large scale eutectic ceramic component
Technology, but the drawbacks such as there are microstructures coarse, highly textured orientation and production efficiency are low.Compared with traditional consolidation technology,
Powder metallurgy sintered method has good ingredient controllability, even tissue, without advantages such as gross segregations；In addition, realizing large scale pottery
Porcelain component and near-net-shape preparation etc. also highlight greater advantages.However, due to crystal grain exception during sintering densification
It grows up, intercrystalline the defects of there are holes, interface amorphous phase, thus ceramic material occurs Grain Boundary Sliding and causes under high temperature environment
Plastic deformation, strongly limits its military service performance under hyperthermal environments.
High energy oxyacetylene torch line process for modifying surface has collection beam power density height, contactless quick heating, heat
The zone of influence is small, controllability is high, influences the features such as small to material global tissue performance and dimensional stability.Using high energy oxy-acetylene fire
Flame line carries out local rapidly solidification processing to large scale eutectic composition alumina base complex phase ceramic surface, changes material by part
Expect surface institutional framework and form achieve the effect that strengthen surface layer, thus improve alumina base complex phase ceramic surface it is wear-resisting,
A series of performances such as anti-corrosion, endurance.
Summary of the invention
The present invention is to solve the technology that current high-melting-point alumina-based eutectic ceramic is difficult to prepare large-size components and ask
Topic, and it is tough to provide a kind of modified oxidized aluminium base ceramics large-size components surface part nanometer eutectic of high energy oxyacetylene torch line
The method of change.
The modified oxidized aluminium base ceramics large-size components surface part nanometer eutectic of high energy oxyacetylene torch line of the invention
The method of Strengthening and Toughening carries out according to the following steps:
One, the stepped combined preparation method of alumina base eutectic powder: by nanometer Al2O3, nanometer TZ3Y20A and nanometer RE2O3
For raw material, it is placed in the same ball grinder according to the mixing of eutectic composition mol ratio, dehydrated alcohol and aluminium oxide abrading-ball is added,
Ball milling 12h~100h under conditions of rotational speed of ball-mill is 300rpm~500rpm obtains answering for alumina base eutectic composition proportion
Phase powdery pulp；The complex phase powdery pulp that alumina base eutectic composition is matched is dry under conditions of temperature is 100 DEG C~200 DEG C
Then dry 20min~100min crosses 100 mesh~500 meshes, obtain having the nanoscale alumina base complex phase of eutectic composition to make pottery
Porcelain powder；The d of the nanometer TZ3Y20A50For 30nm~50nm；
Two, pulsed discharge plasma sintering densification: by nanoscale alumina base complex phase obtained in step 1
Ceramic powder pressure be 10MPa~100MPa, pulsed discharge plasma heating rate be 50 DEG C/min~300 DEG C/min and
It is then that 10MPa~100MPa, pulse are put in pressure from room temperature to 1000 DEG C~1700 DEG C under conditions of under vacuum condition
Electro-plasma heating temperature is that 1min~20min is kept the temperature under 1000 DEG C~1700 DEG C and vacuum condition, stops being heated and pressurizeed,
It opens circulating water cooling system and fast cooling is carried out to sintering ceramics, finally obtain the eutectic composition alumina base of consistency > 99%
Complex phase ceramic；
Three, high energy oxyacetylene torch line nano surface intensive treatment: by the eutectic composition of consistency > 99% in step 2
Alumina base complex phase ceramic through 100 mesh~1000 mesh sand paper polish, be subsequently placed in and heat the substrate, with 5 DEG C/min~50
DEG C/heating rate of min preheated from room temperature to 200 DEG C~600 DEG C, it is then turned on high energy oxyacetylene torch line hair
Generating apparatus is 1 × 10 in energy density3W~1 × 104W, scanning speed are 0.5mm/min~20mm/min, and high energy beam current occurs
Device and ceramic material surfaces distance be 0.5mm~20mm and heating speed be 500 DEG C/s~2000 DEG C/s under conditions of be warming up to
1900 DEG C~3000 DEG C, then temperature be 1900 DEG C~3000 DEG C under conditions of In Situ Heating 1s~20s to eutectic composition oxygen
Change aluminium base complex phase ceramic large-size components surface and carry out nanometer part Strengthening and Toughening, closes high energy oxyacetylene torch line and fill
It sets, heat the substrate makes the temperature of ceramic material be down to 500 DEG C~800 DEG C with 5 DEG C/min~50 DEG C/min rate of temperature fall, then
Make modified ceramic from room temperature state is cooled to, obtains the large scale alumina base that making Nano surface layer depth is 100 μm~2000 μm
Complex phase ceramic.
It locally receives on the modified oxidized aluminium base ceramics large-size components surface of another high energy oxyacetylene torch line of the invention
The method of meter Gong Jing Strengthening and Toughening carries out according to the following steps:
One, the stepped combined preparation method of alumina base eutectic powder: by nanometer Al2O3It is raw material with nanometer TZ3Y20A, presses
It is placed in the same ball grinder according to the mixing of eutectic composition mol ratio, dehydrated alcohol and aluminium oxide abrading-ball is added, turned in ball milling
Speed is ball milling 12h~100h under conditions of 300rpm~500rpm, obtains the complex phase powder slurry of alumina base eutectic composition proportion
Material；The complex phase powdery pulp that alumina base eutectic composition is matched dry 20min under conditions of temperature is 100 DEG C~200 DEG C
Then~100min crosses 100 mesh~500 meshes, obtains the nanoscale alumina base multiphase ceramic powder with eutectic composition；
Two, pulsed discharge plasma sintering densification: by nanoscale alumina base complex phase obtained in step 1
Ceramic powder pressure be 10MPa~100MPa, pulsed discharge plasma heating rate be 50 DEG C/min~300 DEG C/min and
It is then that 10MPa~100MPa, pulse are put in pressure from room temperature to 1000 DEG C~1700 DEG C under conditions of under vacuum condition
Electro-plasma heating temperature is that 1min~20min is kept the temperature under 1000 DEG C~1700 DEG C and vacuum condition, stops being heated and pressurizeed,
It opens circulating water cooling system and fast cooling is carried out to sintering ceramics, finally obtain the eutectic composition alumina base of consistency > 99%
Complex phase ceramic；
Three, high energy oxyacetylene torch line nano surface intensive treatment: by the eutectic composition of consistency > 99% in step 2
Alumina base complex phase ceramic through 100 mesh~1000 mesh sand paper polish, be subsequently placed in and heat the substrate, with 5 DEG C/min~50
DEG C/heating rate of min preheated from room temperature to 200 DEG C~600 DEG C, it is then turned on high energy oxyacetylene torch line hair
Generating apparatus is 1 × 10 in energy density3W~1 × 104W, scanning speed are 0.5mm/min~20mm/min, and high energy beam current occurs
Device and ceramic material surfaces distance be 0.5mm~20mm and heating speed be 500 DEG C/s~2000 DEG C/s under conditions of be warming up to
1900 DEG C~3000 DEG C, then temperature be 1900 DEG C~3000 DEG C under conditions of In Situ Heating 1s~20s to eutectic composition oxygen
Change aluminium base complex phase ceramic large-size components surface and carry out nanometer part Strengthening and Toughening, closes high energy oxyacetylene torch line and fill
It sets, heat the substrate makes the temperature of ceramic material be down to 500 DEG C~800 DEG C with 5 DEG C/min~50 DEG C/min rate of temperature fall, then
Make modified ceramic from room temperature state is cooled to, obtains the large scale alumina base that making Nano surface layer depth is 100 μm~2000 μm
Complex phase ceramic.
Eutectic composition mol ratio in step 1 is determined by phasor.
TZ3Y20A is partially stabilized ZrO2(3mol%Y2O3) -20wt% nanometer Al2O3, Tosoh of the purchase from Japan
Company.
High energy oxyacetylene torch line nano surface schedule of reinforcement of the present invention includes static type in situ and line style dynamic
Two kinds of formula:
Static type in situ is modified mainly for material surface part point type, and modified area is up to 10mm2~100mm2；
Line style dynamic type is modified mainly for parallel lines and grid type, adjacent parallel lines spacing 2mm~100mm.
It is difficult to the drawbacks of preparing large-size components based on high-melting-point alumina-based eutectic ceramic, present invention firstly provides uses
Pulsed discharge plasma Fast Sintering+high energy oxyacetylene torch line nano surface eutectic Strengthening and Toughening United Technologies prepares surface layer
Large scale alumina base complex phase ceramic with superfine nanometer eutectic reinforced structure feature, reaches and takes into account eutectic ceramic hot properties
With the purpose of polycrystalline complex phase ceramic processability.
The present invention takes above technical scheme to have the advantage that
(1) the method for the present invention is related to a kind of large scale oxygen for preparing surface layer and having superfine nanostructure eutectic Strengthening and Toughening feature
Change aluminium base complex phase ceramic technology, eutectic powder is prepared by stepped combined method, pulsed discharge plasma Fast Sintering prepares height
Tough alumina base large-size ceramic, high energy oxyacetylene torch line carry out nanometer eutectic Strengthening and Toughening to its surface, this compound skill
Art achievees the purpose that take into account eutectic ceramic hot properties and polycrystalline complex phase ceramic processability；
(2) the method for the present invention high energy oxyacetylene torch line nano surface eutectic, which is strengthened, can be achieved static type in situ and line style
Dynamic type nanometer eutectic Strengthening and Toughening, static type in situ is modified mainly for material surface part point type, and modified area is up to 10mm2
~100mm2；Line style dynamic type is modified mainly for parallel lines and grid type, adjacent parallel lines spacing 2mm~100mm；
(3) the method for the present invention high energy oxyacetylene torch line surface strengthening technology heat affected area is small, controllability is high, to matrix
Material global tissue performance and dimensional stability influence small.It is heated the substrate using surface and alumina-based ceramic is carried out at preheating
Reason, Thermal-shock Damage problem of Cracking caused by effectively avoiding high energy oxyacetylene torch line from handling.The nanometer tough layer of eutectic is microcosmic
Organizational scale is 5nm-100nm, and thickness may be implemented in 100 μm~2000 μm.
Detailed description of the invention
Fig. 1 is the SEM figure for testing the large scale alumina base complex phase ceramic surface of making Nano surface of a preparation；
Fig. 2 is the SEM figure for testing the large scale alumina base complex phase ceramic section of making Nano surface of a preparation.
Specific embodiment
Specific embodiment 1: present embodiment is a kind of big ruler of the modified oxidized aluminium base ceramics of high energy oxyacetylene torch line
The method of very little component surface part nanometer eutectic Strengthening and Toughening, specifically carries out according to the following steps:
One, the stepped combined preparation method of alumina base eutectic powder: by nanometer Al2O3, nanometer TZ3Y20A and nanometer RE2O3
For raw material, it is placed in the same ball grinder according to the mixing of eutectic composition mol ratio, dehydrated alcohol and aluminium oxide abrading-ball is added,
Ball milling 12h~100h under conditions of rotational speed of ball-mill is 300rpm~500rpm obtains answering for alumina base eutectic composition proportion
Phase powdery pulp；The complex phase powdery pulp that alumina base eutectic composition is matched is dry under conditions of temperature is 100 DEG C~200 DEG C
Then dry 20min~100min crosses 100 mesh~500 meshes, obtain having the nanoscale alumina base complex phase of eutectic composition to make pottery
Porcelain powder；The d of the nanometer TZ3Y20A50For 30nm~50nm；
Two, pulsed discharge plasma sintering densification: by nanoscale alumina base complex phase obtained in step 1
Ceramic powder pressure be 10MPa~100MPa, pulsed discharge plasma heating rate be 50 DEG C/min~300 DEG C/min and
It is then that 10MPa~100MPa, pulse are put in pressure from room temperature to 1000 DEG C~1700 DEG C under conditions of under vacuum condition
Electro-plasma heating temperature is that 1min~20min is kept the temperature under 1000 DEG C~1700 DEG C and vacuum condition, stops being heated and pressurizeed,
It opens circulating water cooling system and fast cooling is carried out to sintering ceramics, finally obtain the eutectic composition alumina base of consistency > 99%
Complex phase ceramic；
Prepared eutectic composition alumina base complex phase ceramic size diameter is up to 30mm~200mm；
The present invention uses stepped combined method zirconium oxide to introduce in the form of TZ3Y20A, is quickly burnt using pulsed discharge plasma
Knot densification mainly has the advantage that effectively inhibiting tetragonal phase zirconium oxide crystallite dimension to grow up generates multiple dimensioned zirconia particles,
Give full play to the multiple toughening effect of zirconium oxide；The stepped combined uniformity for effectively improving eutectic composition proportion multiphase ceramic powder,
It can overcome to a certain degree in Process of Surface Modification since constitutional supercooling leads to the formation of primary tissue, which is to reach surface pole
One of the key technique of thin nano reinforcement effect.
Three, high energy oxyacetylene torch line nano surface intensive treatment: by the eutectic composition of consistency > 99% in step 2
Alumina base complex phase ceramic through 100 mesh~1000 mesh sand paper polish, be subsequently placed in and heat the substrate, with 5 DEG C/min~50
DEG C/heating rate of min preheated from room temperature to 200 DEG C~600 DEG C, it is then turned on high energy oxyacetylene torch line hair
Generating apparatus is 1 × 10 in energy density3W~1 × 104W, scanning speed are 0.5mm/min~20mm/min, and high energy beam current occurs
Device and ceramic material surfaces distance be 0.5mm~20mm and heating speed be 500 DEG C/s~2000 DEG C/s under conditions of be warming up to
1900 DEG C~3000 DEG C, then temperature be 1900 DEG C~3000 DEG C under conditions of In Situ Heating 1s~20s to eutectic composition oxygen
Change aluminium base complex phase ceramic large-size components surface and carry out nanometer part Strengthening and Toughening, closes high energy oxyacetylene torch line and fill
It sets, heat the substrate makes the temperature of ceramic material be down to 500 DEG C~800 DEG C with 5 DEG C/min~50 DEG C/min rate of temperature fall, then
Make modified ceramic from room temperature state is cooled to, obtains the large scale alumina base that making Nano surface layer depth is 100 μm~2000 μm
Complex phase ceramic.
Specific embodiment 2: the present embodiment is different from the first embodiment in that: RE described in step 12O3
For Y2O3、Gd2O3Or Er2O3.Other are same as the specific embodiment one.
Specific embodiment 3: present embodiment is unlike specific embodiment two: nanometer described in step 1
The d of TZ3Y20A50For 30nm.Other are identical with embodiment two.
Specific embodiment 4: present embodiment is a kind of big ruler of the modified oxidized aluminium base ceramics of high energy oxyacetylene torch line
The method of very little component surface part nanometer eutectic Strengthening and Toughening carries out according to the following steps:
One, the stepped combined preparation method of alumina base eutectic powder: by nanometer Al2O3It is raw material with nanometer TZ3Y20A, presses
It is placed in the same ball grinder according to the mixing of eutectic composition mol ratio, dehydrated alcohol and aluminium oxide abrading-ball is added, turned in ball milling
Speed is ball milling 12h~100h under conditions of 300rpm~500rpm, obtains the complex phase powder slurry of alumina base eutectic composition proportion
Material；The complex phase powdery pulp that alumina base eutectic composition is matched dry 20min under conditions of temperature is 100 DEG C~200 DEG C
Then~100min crosses 100 mesh~500 meshes, obtains the nanoscale alumina base multiphase ceramic powder with eutectic composition；
The d of the nanometer TZ3Y20A50For 30nm~50nm；
Two, pulsed discharge plasma sintering densification: by nanoscale alumina base complex phase obtained in step 1
Ceramic powder pressure be 10MPa~100MPa, pulsed discharge plasma heating rate be 50 DEG C/min~300 DEG C/min and
It is then that 10MPa~100MPa, pulse are put in pressure from room temperature to 1000 DEG C~1700 DEG C under conditions of under vacuum condition
Electro-plasma heating temperature is that 1min~20min is kept the temperature under 1000 DEG C~1700 DEG C and vacuum condition, stops being heated and pressurizeed,
It opens circulating water cooling system and fast cooling is carried out to sintering ceramics, finally obtain the eutectic composition alumina base of consistency > 99%
Complex phase ceramic；
Three, high energy oxyacetylene torch line nano surface intensive treatment: by the eutectic composition of consistency > 99% in step 2
Alumina base complex phase ceramic through 100 mesh~1000 mesh sand paper polish, be subsequently placed in and heat the substrate, with 5 DEG C/min~50
DEG C/heating rate of min preheated from room temperature to 200 DEG C~600 DEG C, it is then turned on high energy oxyacetylene torch line hair
Generating apparatus is 1 × 10 in energy density3W~1 × 104W, scanning speed are 0.5mm/min~20mm/min, and high energy beam current occurs
Device and ceramic material surfaces distance be 0.5mm~20mm and heating speed be 500 DEG C/s~2000 DEG C/s under conditions of be warming up to
1900 DEG C~3000 DEG C, then temperature be 1900 DEG C~3000 DEG C under conditions of In Situ Heating 1s~20s to eutectic composition oxygen
Change aluminium base complex phase ceramic large-size components surface and carry out nanometer part Strengthening and Toughening, closes high energy oxyacetylene torch line and fill
It sets, heat the substrate makes the temperature of ceramic material be down to 500 DEG C~800 DEG C with 5 DEG C/min~50 DEG C/min rate of temperature fall, then
Make modified ceramic from room temperature state is cooled to, obtains the large scale alumina base that making Nano surface layer depth is 100 μm~2000 μm
Complex phase ceramic.
Specific embodiment 5: present embodiment is unlike specific embodiment four: nanometer described in step 1
The d of TZ3Y20A50For 30nm.Other are identical as specific embodiment four.
Specific embodiment 6: present embodiment is unlike specific embodiment four: in rotational speed of ball-mill in step 1
For ball milling 50h under conditions of 400rpm, the complex phase powdery pulp of alumina base eutectic composition proportion is obtained.Other and specific implementation
Mode four is identical.
The present invention is verified with following tests:
Test one: this test is a kind of modified oxidized aluminium base ceramics large-size components surface office of high energy oxyacetylene torch line
The method of portion's nanometer eutectic Strengthening and Toughening carries out according to the following steps:
One, the stepped combined preparation method of alumina base eutectic powder: by nanometer Al2O3It is raw material with nanometer TZ3Y20A, presses
It is placed in the same ball grinder according to the mixing of eutectic composition mol ratio, dehydrated alcohol and aluminium oxide abrading-ball is added, turned in ball milling
Speed is ball milling 50h under conditions of 400rpm, obtains the complex phase powdery pulp of alumina base eutectic composition proportion；Alumina base is total to
The complex phase powdery pulp of brilliant composition proportion dry 50min under conditions of temperature is 150 DEG C, then crosses 300 meshes, is had
The nanoscale alumina base multiphase ceramic powder of eutectic composition；The d of the nanometer TZ3Y20A50For 30nm；The nanometer
Al2O3Molar ratio with nanometer TZ3Y20A is 63:37；
Two, pulsed discharge plasma sintering densification: by nanoscale alumina base complex phase obtained in step 1
Ceramic powder is under conditions of pressure is 50MPa, pulsed discharge plasma heating rate is under 100 DEG C/min and vacuum condition
From room temperature to 1500 DEG C, then pressure is 50MPa, pulsed discharge plasma heating temperature is 1500 DEG C and vacuum item
10min is kept the temperature under part, stops being heated and pressurizeed, circulating water cooling system is opened and fast cooling is carried out to sintering ceramics, it is final to obtain
The eutectic composition alumina base complex phase ceramic of consistency > 99%；
Three, high energy oxyacetylene torch line nano surface intensive treatment: by the eutectic composition of consistency > 99% in step 2
Alumina base complex phase ceramic is polished through 500 mesh sand paper, is subsequently placed in and is heated the substrate, with the heating rate of 30 DEG C/min from
Room temperature is preheated to 400 DEG C, and high energy oxyacetylene torch line generating device is then turned on, energy density be 1 ×
104W, scanning speed 10mm/min, high energy beam current generator is 10mm with ceramic material surfaces distance and heating speed is
2000 DEG C are warming up under conditions of 1000 DEG C/s, then under conditions of temperature is 2000 DEG C In Situ Heating 10s to eutectic composition
Alumina base complex phase ceramic large-size components surface carries out nanometer part Strengthening and Toughening, closes high energy oxyacetylene torch line and fills
It sets, heat the substrate makes the temperature of ceramic material be down to 600 DEG C with the rate of temperature fall of 30 DEG C/min, is cooled to modified ceramic certainly
Room temperature state obtains the large scale alumina base complex phase ceramic of making Nano surface.
Fig. 1 is the SEM figure for testing the large scale alumina base complex phase ceramic surface of making Nano surface of a preparation, from Fig. 1
As can be seen that being formed has the strong of superfine nanometer eutectic feature by high energy oxyacetylene torch line nano surface intensive treatment
Change tissue, microstructure is made of superfine synusia aluminium oxide and zirconium oxide, and certain orientation distribution feature is presented in microcell scope.
Fig. 2 is the SEM figure for testing the large scale alumina base complex phase ceramic section of making Nano surface of a preparation, region A
Having for nanometer eutectic Strengthening and Toughening layer figure it is seen that passing through high energy oxyacetylene torch line nano surface intensive treatment
There is the alumina base complex phase ceramic surface of eutectic composition locally successfully to prepare nano reinforcement layer, thickness is up to 150 μm, strengthening layer
It is well combined with matrix and without hole and the defects of cracking.
Claims (5)
1. a kind of modified oxidized aluminium base ceramics large-size components surface part nanometer eutectic Strengthening and Toughening of high energy oxyacetylene torch line
Method, it is characterised in that the modified oxidized aluminium base ceramics large-size components surface part nanometer eutectic of high energy oxyacetylene torch line
The method of Strengthening and Toughening carries out according to the following steps:
One, the stepped combined preparation method of alumina base eutectic powder: by nanometer Al2O3, nanometer TZ3Y20A and nanometer RE2O3For original
Material is placed in the same ball grinder according to the mixing of eutectic composition mol ratio, dehydrated alcohol and aluminium oxide abrading-ball is added, in ball
Grinding revolving speed is ball milling 12h~100h under conditions of 300rpm~500rpm, obtains the complex phase powder of alumina base eutectic composition proportion
Somaplasm material；The complex phase powdery pulp that alumina base eutectic composition is matched is dry under conditions of temperature is 100 DEG C~200 DEG C
Then 20min~100min crosses 100 mesh~500 meshes, obtains the nanoscale alumina base complex phase ceramic with eutectic composition
Powder；The d of the nanometer TZ3Y20A50For 30nm~50nm；RE described in step 12O3For Y2O3、Gd2O3Or Er2O3；
Two, pulsed discharge plasma sintering densification: by nanoscale alumina base complex phase ceramic obtained in step 1
Powder is pressure is 10MPa~100MPa, pulsed discharge plasma heating rate is 50 DEG C/min~300 DEG C/min and vacuum
Under the conditions of under conditions of from room temperature to 1000 DEG C~1700 DEG C, be then 10MPa~100MPa, pulsed discharge etc. in pressure
Gas ions heating temperature is that 1min~20min is kept the temperature under 1000 DEG C~1700 DEG C and vacuum condition, stops being heated and pressurizeed, and is opened
Circulating water cooling system carries out fast cooling to sintering ceramics, finally obtains the eutectic composition alumina base complex phase of consistency > 99%
Ceramics；
Three, high energy oxyacetylene torch line nano surface intensive treatment: the eutectic composition of consistency > 99% in step 2 is aoxidized
Aluminium base complex phase ceramic through 100 mesh~1000 mesh sand paper polish, be subsequently placed in and heat the substrate, with 5 DEG C/min~50 DEG C/
The heating rate of min is preheated from room temperature to 200 DEG C~600 DEG C, is then turned on the generation of high energy oxyacetylene torch line
Device is 1 × 10 in energy density3W~1 × 104W, scanning speed are 0.5mm/min~20mm/min, high energy beam current generator
With ceramic material surfaces distance be 0.5mm~20mm and heating speed be 500 DEG C/s~2000 DEG C/s under conditions of be warming up to
1900 DEG C~3000 DEG C, then temperature be 1900 DEG C~3000 DEG C under conditions of In Situ Heating 1s~20s to eutectic composition oxygen
Change aluminium base complex phase ceramic large-size components surface and carry out nanometer part Strengthening and Toughening, closes high energy oxyacetylene torch line and fill
It sets, heat the substrate makes the temperature of ceramic material be down to 500 DEG C~800 DEG C with 5 DEG C/min~50 DEG C/min rate of temperature fall, then
Make modified ceramic from room temperature state is cooled to, obtains the large scale alumina base that making Nano surface layer depth is 100 μm~2000 μm
Complex phase ceramic.
2. the modified oxidized aluminium base ceramics large-size components surface of a kind of high energy oxyacetylene torch line according to claim 1
The method of local nanometer eutectic Strengthening and Toughening, it is characterised in that the d of nanometer TZ3Y20A described in step 150For 30nm.
3. a kind of modified oxidized aluminium base ceramics large-size components surface part nanometer eutectic Strengthening and Toughening of high energy oxyacetylene torch line
Method, it is characterised in that the modified oxidized aluminium base ceramics large-size components surface part nanometer eutectic of high energy oxyacetylene torch line
The method of Strengthening and Toughening carries out according to the following steps:
One, the stepped combined preparation method of alumina base eutectic powder: by nanometer Al2O3It is raw material with nanometer TZ3Y20A, according to altogether
Brilliant Component molar proportion mixing is placed in the same ball grinder, and dehydrated alcohol and aluminium oxide abrading-ball is added, is in rotational speed of ball-mill
Ball milling 12h~100h under conditions of 300rpm~500rpm obtains the complex phase powdery pulp of alumina base eutectic composition proportion；It will
The complex phase powdery pulp of alumina base eutectic composition proportion under conditions of temperature is 100 DEG C~200 DEG C dry 20min~
Then 100min crosses 100 mesh~500 meshes, obtains the nanoscale alumina base multiphase ceramic powder with eutectic composition；Institute
The d of the nanometer TZ3Y20A stated50For 30nm~50nm；
Two, pulsed discharge plasma sintering densification: by nanoscale alumina base complex phase ceramic obtained in step 1
Powder is pressure is 10MPa~100MPa, pulsed discharge plasma heating rate is 50 DEG C/min~300 DEG C/min and vacuum
Under the conditions of under conditions of from room temperature to 1000 DEG C~1700 DEG C, be then 10MPa~100MPa, pulsed discharge etc. in pressure
Gas ions heating temperature is that 1min~20min is kept the temperature under 1000 DEG C~1700 DEG C and vacuum condition, stops being heated and pressurizeed, and is opened
Circulating water cooling system carries out fast cooling to sintering ceramics, finally obtains the eutectic composition alumina base complex phase of consistency > 99%
Ceramics；
Three, high energy oxyacetylene torch line nano surface intensive treatment: the eutectic composition of consistency > 99% in step 2 is aoxidized
Aluminium base complex phase ceramic through 100 mesh~1000 mesh sand paper polish, be subsequently placed in and heat the substrate, with 5 DEG C/min~50 DEG C/
The heating rate of min is preheated from room temperature to 200 DEG C~600 DEG C, is then turned on the generation of high energy oxyacetylene torch line
Device is 1 × 10 in energy density3W~1 × 104W, scanning speed are 0.5mm/min~20mm/min, high energy beam current generator
With ceramic material surfaces distance be 0.5mm~20mm and heating speed be 500 DEG C/s~2000 DEG C/s under conditions of be warming up to
1900 DEG C~3000 DEG C, then temperature be 1900 DEG C~3000 DEG C under conditions of In Situ Heating 1s~20s to eutectic composition oxygen
Change aluminium base complex phase ceramic large-size components surface and carry out nanometer part Strengthening and Toughening, closes high energy oxyacetylene torch line and fill
It sets, heat the substrate makes the temperature of ceramic material be down to 500 DEG C~800 DEG C with 5 DEG C/min~50 DEG C/min rate of temperature fall, then
Make modified ceramic from room temperature state is cooled to, obtains the large scale alumina base that making Nano surface layer depth is 100 μm~2000 μm
Complex phase ceramic.
4. the modified oxidized aluminium base ceramics large-size components surface of a kind of high energy oxyacetylene torch line according to claim 3
The method of local nanometer eutectic Strengthening and Toughening, it is characterised in that the d of nanometer TZ3Y20A described in step 150For 30nm.
5. the modified oxidized aluminium base ceramics large-size components surface of a kind of high energy oxyacetylene torch line according to claim 3
The method of local nanometer eutectic Strengthening and Toughening, it is characterised in that in step 1 rotational speed of ball-mill be 400rpm under conditions of ball milling 50h,
Obtain the complex phase powdery pulp of alumina base eutectic composition proportion.
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