CN102503418A - Low-temperature liquid-phase sintered La2Zr2O7 ceramics and sintering method thereof - Google Patents
Low-temperature liquid-phase sintered La2Zr2O7 ceramics and sintering method thereof Download PDFInfo
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- CN102503418A CN102503418A CN2011103282561A CN201110328256A CN102503418A CN 102503418 A CN102503418 A CN 102503418A CN 2011103282561 A CN2011103282561 A CN 2011103282561A CN 201110328256 A CN201110328256 A CN 201110328256A CN 102503418 A CN102503418 A CN 102503418A
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- 238000005245 sintering Methods 0.000 title claims abstract description 59
- 238000000034 method Methods 0.000 title claims abstract description 27
- 239000007791 liquid phase Substances 0.000 title claims abstract description 26
- 239000000919 ceramic Substances 0.000 title abstract description 33
- 229910002230 La2Zr2O7 Inorganic materials 0.000 title abstract 17
- 238000002156 mixing Methods 0.000 claims abstract description 3
- 238000000498 ball milling Methods 0.000 claims description 24
- 229910010413 TiO 2 Inorganic materials 0.000 claims description 21
- 239000000843 powder Substances 0.000 claims description 19
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims description 13
- 238000009413 insulation Methods 0.000 claims description 10
- 238000005303 weighing Methods 0.000 claims description 9
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 6
- 229910052746 lanthanum Inorganic materials 0.000 claims description 4
- 239000011812 mixed powder Substances 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 238000010792 warming Methods 0.000 claims description 4
- 238000000465 moulding Methods 0.000 claims description 2
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 claims description 2
- 229910001928 zirconium oxide Inorganic materials 0.000 claims description 2
- 238000002360 preparation method Methods 0.000 abstract description 19
- 239000012720 thermal barrier coating Substances 0.000 abstract description 12
- 230000008569 process Effects 0.000 abstract description 9
- 229910010293 ceramic material Inorganic materials 0.000 abstract description 6
- 239000013078 crystal Substances 0.000 abstract description 6
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 239000007790 solid phase Substances 0.000 abstract description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titanium dioxide Inorganic materials O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 abstract 4
- 239000002671 adjuvant Substances 0.000 abstract 1
- 230000001276 controlling effect Effects 0.000 abstract 1
- 238000003825 pressing Methods 0.000 abstract 1
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 150000001875 compounds Chemical class 0.000 description 12
- 238000005452 bending Methods 0.000 description 10
- 239000000463 material Substances 0.000 description 7
- 239000011248 coating agent Substances 0.000 description 6
- 238000000576 coating method Methods 0.000 description 6
- 239000011159 matrix material Substances 0.000 description 6
- 238000007542 hardness measurement Methods 0.000 description 5
- 238000000280 densification Methods 0.000 description 4
- 238000001272 pressureless sintering Methods 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 239000002002 slurry Substances 0.000 description 4
- 238000005507 spraying Methods 0.000 description 4
- 239000000654 additive Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 229910000990 Ni alloy Inorganic materials 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000000151 deposition Methods 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 description 2
- 238000007750 plasma spraying Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 230000004913 activation Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- 235000006708 antioxidants Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000009770 conventional sintering Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001652 electrophoretic deposition Methods 0.000 description 1
- 230000005496 eutectics Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000009766 low-temperature sintering Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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Abstract
The invention relates to low-temperature liquid-phase sintered La2Zr2O7 ceramics comprising 97 to 99.5 percent of La2Zr2O7 and 0.5 to 3 percent of CuO-TiO2 by percent weight. A preparation method of the low-temperature liquid-phase sintered La2Zr2O7 ceramics comprises three steps of proportioning/mixing, pressing and sintering. According to the low-temperature liquid-phase sintered La2Zr2O7 ceramics and the preparation method of the low-temperature liquid-phase sintered La2Zr2O7 ceramics, La2Zr2O7 ceramics is obtained by using common normal-pressure sintering through introducing a binary sintering adjuvant of the CuO-TiO2 into the La2Zr2O7; a liquid phase is formed at low temperature by utilizing the CuO-TiO2 through regulating the content of the CuO-TiO2 and controlling a sintering process, so that an La2Zr2O7 sintering mechanism is converted from solid-phase sintering to liquid-phase sintering; therefore, the sintering temperature is greatly lowered; and a compact La2Zr2O7 ceramic block body is obtained at about 1100 DEG C, the prepared ceramics has smaller crystal grains, the mechanical property is good, and the energy consumption is low. According to the low-temperature liquid-phase sintered La2Zr2O7 ceramics and the preparation method of the low-temperature liquid-phase sintered La2Zr2O7 ceramics, the components are reasonable, the preparation process is simple, the sintering temperature is low, and the La2Zr2O7 crystal grains prepared by sintering are fine and compact; and the preparation of a ceramic material of an La2Zr2O7 thermal barrier coating or an La2Zr2O7 block body at low temperature can be realized. The low-temperature liquid-phase sintered La2Zr2O7 ceramics and the preparation method of the low-temperature liquid-phase sintered La2Zr2O7 ceramics are suitable for industrialized application.
Description
Technical field:
That the present invention relates to is a kind of low-temp liquid-phase sintering La
2Zr
2O
7Pottery and sintering method specifically are meant the binary sintering aid CuO-TiO that adds different content
2Realize La
2Zr
2O
7Low-temperature sintering.Belong to the structural ceramic material preparing technical field.
Background technology:
Thermal barrier coating is a kind of thermal protection coating of being made up of ceramic insulation top layer and anti-oxidant bond coating.To traditional ceramics insulating surface material 8YSZ (8wt.%Y
2O
3-ZrO
2) problem of high high-temp stability difference, people have developed the stable zirconium white of a series of different stabilizers, and research shows that these materials compare with 8YSZ, and its over-all properties all is not significantly improved.In recent years, the zinconate ceramics with pyrochlore constitution has become one of focus of thermal barrier coating ceramic insulation skin-material research with its good high-temperature thermostability and heat-proof quality.Wherein, La
2Zr
2O
7Have excellent high high-temp stability, do not undergo phase transition in ℃ TR of normal temperature～1300, and have the thermal conductivity lower, become a kind of extremely promising temperature that is applicable to and surpassed 1200 ℃ novel thermal barrier coating ceramic material than 8YSZ.
Thermal barrier coating adopts plasma spraying or electro beam physics vapour deposition preparation usually, but the facility investment of these two kinds of methods is big, and production cost is high, and all is not suitable for the matrix of complicated shape.For this reason, developed multiple method for preparing heat barrier coating, such as slip spraying, electrophoretic deposition, sol-gel etc.; Wherein the slip spraying method is applicable to the matrix of different shape except having the restriction that does not receive the metallic matrix shape, outside the characteristics that required equipment is simple, cheap, cost is low; It is big also to have the film forming area simultaneously; Uniform film thickness, the fast and thickness of rate of film build is easy to advantages such as control, thereby this method is applied widely; Being fit to produce in enormous quantities, is a kind of method for preparing heat barrier coating that application prospect is arranged very much that development in recent years is got up.At present; The key factor that the slip spraying method fails in the preparation of thermal barrier coating to obtain widespread use is because the fusing point of thermal barrier coating ceramic material (8YSZ) is higher, need under the sintering temperature more than 1400 ℃, just can make coating reach certain density, obtain can practical application coating; And the life-time service temperature of matrix Ni alloy is about 1100 ℃; Adopt conventional sintering method, metallic matrix will at high temperature be out of shape even melt, and the preparation process is difficult to carry out.
La
2Zr
2O
7Though have the fusing point low than 8YSZ, its sintering temperature also about 1400 ℃, must reduce its sintering temperature, and could adopt the slip spraying method on the Ni alloy substrate, to obtain can fine and close La
2Zr
2O
7Thermal barrier coating.Usually the sintering temperature that reduces stupalith mainly contains two kinds of methods: the one, reduce the particle size of powder, and adopt superfine powder to make raw material. but this method complex process, cost is high.Another kind method is through adding suitable additive, and these additives can produce liquid phase in sintering process, form liquid phase sintering; Perhaps additive and ceramic matrix form substitutional solid solution; Thereby make abnormalization of lattice activation lattice, form hole or migration atom, and make lattice produce distortion, play the activated sintering effect; Thereby promoted densification process, made that material can densified sintering product under lower temperature.Up to now, the relevant La of Shang Weijian
2Zr
2O
7The report of low sintering document of pottery or patent.
Summary of the invention
The objective of the invention is to overcome the deficiency of prior art and provide that a kind of component is reasonable, sintering process is simple, easy and simple to handle, sintering temperature is low, the low-temp liquid-phase sintering La that sintered article crystal grain is tiny, fine and close
2Zr
2O
7Pottery and sintering side.
A kind of low-temp liquid-phase sintering La of the present invention
2Zr
2O
7Pottery, by weight percentage, form by following component:
La
2Zr
2O
7 97％～99.5％，
CuO-TiO
20.5%～3%, wherein: CuO and TiO
2Mass ratio be 5: 1.
A kind of low-temp liquid-phase sintering La of the present invention
2Zr
2O
7In the pottery, said La
2Zr
2O
7The granularity of powder is≤1 μ m, purity＞99.5%; Said CuO-TiO
2Powder is an analytical pure.
A kind of low-temp liquid-phase sintering La of the present invention
2Zr
2O
7The sintering method of pottery comprises the steps:
The first step: batching, batch mixing
Percentage composition takes by weighing 97%～99.5% La by weight
2Zr
2O
7With 0.5%～3% CuO-TiO
2Powder is carried out wet ball-milling; With the slip that obtains behind the ball milling dry 20h under 80 ℃, 100 mesh standard sieves are crossed in the oven dry back, obtain mixed powder; Wherein, CuO and TiO
2Mass ratio be 5: 1;
Second step: die mould
In mixed powder, add 1%～3% Z 150PH as sticker, mix the back after the moulding of 35Mpa pressed, be warming up to 300 ℃～400 ℃ with 3～8 ℃ temperature rise rates, insulation 0.5～1.5h sloughs the sticker of interpolation; Obtain pressed compact;
The 3rd step: sintering
Pressed compact is warming up to 1100 ℃～1400 ℃ with the temperature rise rate of 3～8 ℃/min, and insulation 3～5h carries out normal pressure-sintered, obtains La behind the furnace cooling
2Zr
2O
7Stupalith.
Among the present invention, carry out ball-to-powder weight ratio in the zirconium white ball milling jar of said wet ball-milling on planetary ball mill: (4～6): 1, abrading-ball: zirconium oxide balls, ball-milling medium: absolute ethyl alcohol, ball milling time 12～24h.
Among the present invention, said normal pressure-sinteredly in the high-temperature pressure oxidized still, carry out.
The method that the present invention proposes can be used at low temperatures (1100 ℃) preparation La
2Zr
2O
7Thermal barrier coating, perhaps La
2Zr
2O
7Block body ceramic material.
The present invention is with respect to advantage and beneficial effect that prior art had:
(1) the present invention is through adding CuO-TiO
2Composite powder under lower sintering temperature (1100 ℃), can be accomplished La under air atmosphere and the condition of normal pressure as sintering aid
2Zr
2O
7The sintering densification process of pottery.Therefore, the inventive method can make La
2Zr
2O
7The preparation of thermal barrier coating adopts slip spraying-low sintering technology to carry out, and avoids adopting expensive plasma spraying or electro beam physics vapour deposition technology, can reduce La significantly
2Zr
2O
7The production cost of thermal barrier coating.
(2) the inventive method is passed through at La
2Zr
2O
7The middle sintering aid CuO-TiO that adds
2, in sintering process, liquid phase can occur, thereby greatly reduce sintering temperature, the La of preparation
2Zr
2O
7Material density is high, and crystal grain is tiny to be evenly distributed, and has the good mechanical performance, has reduced energy consumption simultaneously.As CuO and TiO
2Mass ratio be 5: 1 o'clock, have a low eutectic point at 919 ℃, liquid phase can appear in sintering process; The rate of diffusion of zirconic acid lanthanum is accelerated, can be impelled its densification, but temperature is crossed when hanging down; Solid phase diffusion between the zirconic acid lanthanum particle is still very slow, does not reach densification.Experimental result shows, when sintering temperature reaches 1100 ℃, can obtain fine and close La
2Zr
2O
7Block, the sintering temperature when not adding sintering aid reduces more than 300 ℃.
(3) equipment, the operational path of the present invention's use are simple, and stability, favorable reproducibility help suitability for industrialized production, further promote La
2Zr
2O
7The application of material.
In sum, component of the present invention is reasonable, sintering process is simple, and is easy and simple to handle, and sintering temperature is low, the La of sintering preparation
2Zr
2O
7Crystal grain is tiny, fine and close; Can realize (1100 ℃) preparation La under the low temperature
2Zr
2O
7Thermal barrier coating or La
2Zr
2O
7Block body ceramic material.Be suitable for industrial applications.
Description of drawings:
Accompanying drawing 1 is the La of the embodiment of the invention 1 preparation
2Zr
2O
7The SEM photo of ceramic block.
Accompanying drawing 2 is the La of Comparative Examples preparation of the present invention
2Zr
2O
7The SEM photo of ceramic block.
Can find out from the SEM photo of accompanying drawing 1,2,, adopt the La of the inventive method preparation at 1100 ℃ of following sintering
2Zr
2O
7The ceramic dense degree is higher, and crystal grain is tiny, does not almost have pore, and un-added La
2Zr
2O
7The ceramic post sintering block structure is loose, and particle shape does not change basically, and bonding has just taken place.
Embodiment
The La that the embodiment of the invention prepares
2Zr
2O
7The method that the structure of stupalith and performance are carried out test analysis is:
1, measures the density of ceramic block material with Archimedes's drainage;
2, with Sirion 200 type field emission scanning electron microscopes (Scanning Electron Microscope, SEM) microstructure of observation sample and pattern.
3, with electronic universal tester the bending strength of sample is tested.Use the vickers microhardness appearance that the hardness of sample is tested.
Embodiment 1:
Press La
2Zr
2O
7+ 0.5wt% (CuO-16.7wt%TiO
2) ratio raw materials weighing La
2Zr
2O
7With CuO-16.7wt%TiO
2: take by weighing La
2Zr
2O
749.75g, CuO 0.2083g, TiO
20.0417g.Powder is placed zirconium white ball milling jar; Extraordinarily go into absolute ethyl alcohol as ball-milling medium by 1.5 of compound gross weight; Add zirconia ball at 4: 1 by ball-to-powder weight ratio; Ball milling obtained slip in 12 hours on planetary ball mill, and the slurry that mixes at 80 ℃ of following dry 20h, is obtained compound behind 100 mesh standard sieves excessively; The Z 150PH that in compound, adds 1wt.% is pressed into sequin at 35MPa then as sticker, and sequin temperature rise rate with 5 ℃/min in the high-temperature pressure oxidized still is risen to 300 ℃, insulation 0.5h, the processing of coming unstuck.After coming unstuck sample risen to the temperature rise rate of 5 ℃/min and carry out pressureless sintering 5h under 1100 ℃, behind the furnace cooling, obtain fine and close La
2Zr
2O
7Ceramic block.The La of preparation
2Zr
2O
7The SEM photo of ceramic block is seen accompanying drawing 1, ceramic block is carried out density, hardness measurement and bending strength measure.With this understanding, the density of sample is 96.34%, and its hardness is 1790.96Hv, and bending strength is 354.23MPa.
Embodiment 2:
Press La
2Zr
2O
7+ 1.5wt% (CuO-16.7wt%TiO
2) ratio raw materials weighing La
2Zr
2O
7With CuO-16.7wt%TiO
2: take by weighing La
2Zr
2O
749.25g, CuO 0.625g, TiO
20.125g.Powder is placed zirconium white ball milling jar; Extraordinarily go into absolute ethyl alcohol as ball-milling medium by 1.5 of compound gross weight; Add zirconia ball at 5: 1 by ball-to-powder weight ratio; Ball milling obtained slip in 18 hours on planetary ball mill, and the slurry that mixes at 80 ℃ of following dry 20h, is obtained compound behind 100 mesh standard sieves excessively; The Z 150PH that in compound, adds 2wt.% is pressed into sequin at 35MPa then as sticker, and sequin temperature rise rate with 3 ℃/min in the high-temperature pressure oxidized still is risen to 350 ℃, insulation 1h, the processing of coming unstuck.After coming unstuck sample risen to the temperature rise rate of 3 ℃/min and carry out pressureless sintering 4h under 1250 ℃, behind the furnace cooling, obtain fine and close La
2Zr
2O
7Ceramic block.Ceramic block is carried out density, hardness measurement and bending strength to be measured.With this understanding, the density of sample is 97.13%, and hardness is 1524.25Hv, and bending strength is 286.52MPa.
Embodiment 3:
Press La
2Zr
2O
7+ 3.0wt% (CuO-16.7wt%TiO
2) ratio raw materials weighing La
2Zr
2O
7With CuO-16.7wt%TiO
2: take by weighing La
2Zr
2O
748.5g, CuO 0.1.25g, TiO
20.25g.Powder is placed zirconium white ball milling jar; Extraordinarily go into absolute ethyl alcohol as ball-milling medium by 1.5 of compound gross weight; Add zirconia ball at 6: 1 by ball-to-powder weight ratio; Ball milling obtained slip in 24 hours on planetary ball mill, and the slurry that mixes at 80 ℃ of following dry 20h, is obtained compound behind 100 mesh standard sieves excessively; The Z 150PH that in compound, adds 3wt.% is pressed into sequin at 35MPa then as sticker, and sequin temperature rise rate with 8 ℃/min in the high-temperature pressure oxidized still is risen to 400 ℃, insulation 1.5h, the processing of coming unstuck.After coming unstuck sample risen to the temperature rise rate of 8 ℃/min and carry out pressureless sintering 5h under 1400 ℃, behind the furnace cooling, obtain fine and close La
2Zr
2O
7Ceramic block.Ceramic block is carried out density, hardness measurement and bending strength to be measured.With this understanding, the density of sample is that 98.66% hardness is 1859.25Hv, and bending strength is 362.03MPa.
Comparative Examples;
Take by weighing 8YSZ powder 50g; Powder is placed zirconium white ball milling jar, extraordinarily go into absolute ethyl alcohol as ball-milling medium by 1.5 of compound gross weight, ball milling obtained slip in 12 hours on planetary ball mill; The slurry that mixes at 80 ℃ of following dry 20h, is obtained compound behind 100 mesh standard sieves excessively; The Z 150PH that in compound, adds 1wt.% is pressed into sequin at 35MPa then as sticker, and sequin temperature rise rate with 5 ℃/min in the high-temperature pressure oxidized still is risen to 300 ℃, insulation 0.5h, the processing of coming unstuck.After coming unstuck sample risen to the temperature rise rate of 5 ℃/min and carry out pressureless sintering 5h under 1100 ℃, behind the furnace cooling, obtain fine and close La
2Zr
2O
7Ceramic block.The La of preparation
2Zr
2O
7The SEM photo of ceramic block is seen accompanying drawing, 2, and ceramic block is carried out density, hardness measurement and bending strength measure.Ceramic block is carried out density, hardness measurement and bending strength to be measured.With this understanding, the density of sample is 62.51%, and hardness is 138.18Hv, and bending strength is 45.32MPa.
Can be known that by above experimental example after having added sintering aid, sintering temperature reduces, the density of sample is greatly enhanced, and mechanical property also improves.
Claims (5)
1. low-temp liquid-phase sintering La
2Zr
2O
7Pottery, by weight percentage, form by following component:
La
2Zr
2O
7 97％～99.5％，
CuO-TiO
20.5%～3%, wherein: CuO and TiO
2Mass ratio be 5: 1.
2. a kind of low-temp liquid-phase sintering La according to claim 1
2Zr
2O
7Pottery is characterized in that: said La
2Zr
2O
7The granularity of powder is≤1 μ m, purity＞99.5%; Said CuO-TiO
2Powder is an analytical pure.
3. prepare low-temp liquid-phase sintering La according to claim 1 or claim 2
2Zr
2O
7The sintering method of pottery comprises the steps:
The first step: batching, batch mixing
Percentage composition takes by weighing 97%～99.5% La by weight
2Zr
2O
7With 0.5%～3% CuO-TiO
2Powder is carried out wet ball-milling; With the slip that obtains behind the ball milling dry 20h under 80 ℃, 100 mesh standard sieves are crossed in the oven dry back, obtain mixed powder; Wherein, CuO and TiO
2Mass ratio be 5: 1;
Second step: die mould
In mixed powder, add 1%～3% Z 150PH as sticker, mix the back after the moulding of 35Mpa pressed, be warming up to 300 ℃～400 ℃ with 3～8 ℃ temperature rise rates, insulation 0.5～1.5h sloughs the sticker of interpolation; Obtain pressed compact;
The 3rd step: sintering
Pressed compact is warming up to 1100 ℃～1400 ℃ with the temperature rise rate of 3～8 ℃/min, and insulation 3～5h carries out normal pressure-sintered, obtains La behind the furnace cooling
2Zr
2O
7Stupalith.
4. a kind of low-temp liquid-phase sintering La according to claim 3
2Zr
2O
7Pottery is characterized in that: carry out ball-to-powder weight ratio in the zirconium white ball milling jar of said wet ball-milling on planetary ball mill: (4～6): 1, and abrading-ball: zirconium oxide balls, ball-milling medium: absolute ethyl alcohol, ball milling time 12～24h.
5. a kind of low-temp liquid-phase sintering La according to claim 4
2Zr
2O
7Pottery is characterized in that: said normal pressure-sinteredly in the high-temperature pressure oxidized still, carry out.
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|---|---|---|---|
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|---|---|---|---|
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103803972A (en) * | 2013-12-26 | 2014-05-21 | 浙江大学 | Large-size block La2Zr2O7 ceramic material and hot pressed sintering preparation process thereof |
| CN103803973A (en) * | 2013-12-26 | 2014-05-21 | 浙江大学 | Compact pure-phase lanthanum zirconate ceramic with low thermal conductivity and high strength, and preparation method thereof |
-
2011
- 2011-10-25 CN CN201110328256.1A patent/CN102503418B/en not_active Expired - Fee Related
Non-Patent Citations (2)
| Title |
|---|
| 周宏明等: "热障涂层陶瓷材料的研究现状及发展趋势", 《材料导报》 * |
| 郭雁军: "低温烧结8YSZ的微观组织结构及力学性能研究", 《中南大学硕士学位论文》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103803972A (en) * | 2013-12-26 | 2014-05-21 | 浙江大学 | Large-size block La2Zr2O7 ceramic material and hot pressed sintering preparation process thereof |
| CN103803973A (en) * | 2013-12-26 | 2014-05-21 | 浙江大学 | Compact pure-phase lanthanum zirconate ceramic with low thermal conductivity and high strength, and preparation method thereof |
| CN103803972B (en) * | 2013-12-26 | 2015-01-14 | 浙江大学 | Large-size block La2Zr2O7 ceramic material and hot pressed sintering preparation process thereof |
| CN103803973B (en) * | 2013-12-26 | 2015-09-09 | 浙江大学 | Lower thermal conductivity, high strength dense pure phase zirconic acid lanthanum pottery and preparation method thereof |
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