KR102510280B1 - 고순도 및 고밀도 이트륨 알루미늄 가넷 소결체 및 이의 제조방법 - Google Patents
고순도 및 고밀도 이트륨 알루미늄 가넷 소결체 및 이의 제조방법 Download PDFInfo
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- 229910019901 yttrium aluminum garnet Inorganic materials 0.000 title claims abstract description 54
- JNDMLEXHDPKVFC-UHFFFAOYSA-N aluminum;oxygen(2-);yttrium(3+) Chemical compound [O-2].[O-2].[O-2].[Al+3].[Y+3] JNDMLEXHDPKVFC-UHFFFAOYSA-N 0.000 title claims abstract description 53
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 15
- 229910019655 synthetic inorganic crystalline material Inorganic materials 0.000 claims abstract description 127
- 239000000843 powder Substances 0.000 claims abstract description 116
- 239000004372 Polyvinyl alcohol Substances 0.000 claims abstract description 86
- 229920002451 polyvinyl alcohol Polymers 0.000 claims abstract description 86
- 229940068984 polyvinyl alcohol Drugs 0.000 claims abstract description 63
- 235000019422 polyvinyl alcohol Nutrition 0.000 claims abstract description 63
- 238000005245 sintering Methods 0.000 claims abstract description 25
- 229910018072 Al 2 O 3 Inorganic materials 0.000 claims abstract description 24
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims abstract description 20
- NGDQQLAVJWUYSF-UHFFFAOYSA-N 4-methyl-2-phenyl-1,3-thiazole-5-sulfonyl chloride Chemical compound S1C(S(Cl)(=O)=O)=C(C)N=C1C1=CC=CC=C1 NGDQQLAVJWUYSF-UHFFFAOYSA-N 0.000 claims abstract description 19
- 238000001354 calcination Methods 0.000 claims abstract description 15
- PSNPEOOEWZZFPJ-UHFFFAOYSA-N alumane;yttrium Chemical compound [AlH3].[Y] PSNPEOOEWZZFPJ-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000000463 material Substances 0.000 claims abstract description 11
- -1 YAG Chemical compound 0.000 claims abstract description 9
- 238000007086 side reaction Methods 0.000 claims abstract description 9
- 238000000034 method Methods 0.000 claims description 32
- 238000000498 ball milling Methods 0.000 claims description 28
- 239000002245 particle Substances 0.000 claims description 27
- 239000002002 slurry Substances 0.000 claims description 24
- 239000000243 solution Substances 0.000 claims description 21
- 238000001035 drying Methods 0.000 claims description 13
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims description 12
- 239000011259 mixed solution Substances 0.000 claims description 11
- 238000002156 mixing Methods 0.000 claims description 7
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 5
- 239000011858 nanopowder Substances 0.000 claims description 4
- 239000002904 solvent Substances 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 abstract description 18
- 230000000694 effects Effects 0.000 abstract description 7
- 230000008901 benefit Effects 0.000 abstract description 6
- 239000002270 dispersing agent Substances 0.000 abstract description 4
- 239000002994 raw material Substances 0.000 abstract description 3
- 238000010304 firing Methods 0.000 abstract description 2
- 230000015572 biosynthetic process Effects 0.000 description 14
- 230000008569 process Effects 0.000 description 14
- 238000003786 synthesis reaction Methods 0.000 description 14
- 229920000642 polymer Polymers 0.000 description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 11
- 230000002776 aggregation Effects 0.000 description 10
- 238000004220 aggregation Methods 0.000 description 10
- 239000002243 precursor Substances 0.000 description 10
- 239000012071 phase Substances 0.000 description 9
- 239000012153 distilled water Substances 0.000 description 8
- 238000009826 distribution Methods 0.000 description 8
- 238000002441 X-ray diffraction Methods 0.000 description 7
- 239000004065 semiconductor Substances 0.000 description 7
- 238000001308 synthesis method Methods 0.000 description 7
- 239000013078 crystal Substances 0.000 description 6
- 238000005979 thermal decomposition reaction Methods 0.000 description 6
- 238000000280 densification Methods 0.000 description 5
- 238000002474 experimental method Methods 0.000 description 5
- 239000012535 impurity Substances 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- 239000011148 porous material Substances 0.000 description 5
- 230000004580 weight loss Effects 0.000 description 5
- 238000004458 analytical method Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 238000000227 grinding Methods 0.000 description 4
- 239000000395 magnesium oxide Substances 0.000 description 4
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 4
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 4
- 238000000465 moulding Methods 0.000 description 4
- 239000002105 nanoparticle Substances 0.000 description 4
- 230000003287 optical effect Effects 0.000 description 4
- 101001075931 Halobacterium salinarum (strain ATCC 700922 / JCM 11081 / NRC-1) 50S ribosomal protein L6 Proteins 0.000 description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 3
- 239000002131 composite material Substances 0.000 description 3
- 238000002425 crystallisation Methods 0.000 description 3
- 230000008025 crystallization Effects 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 238000003746 solid phase reaction Methods 0.000 description 3
- RUDFQVOCFDJEEF-UHFFFAOYSA-N yttrium(III) oxide Inorganic materials [O-2].[O-2].[O-2].[Y+3].[Y+3] RUDFQVOCFDJEEF-UHFFFAOYSA-N 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000000356 contaminant Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 238000005530 etching Methods 0.000 description 2
- 239000007791 liquid phase Substances 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000010671 solid-state reaction Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 1
- 229910017488 Cu K Inorganic materials 0.000 description 1
- 229910017541 Cu-K Inorganic materials 0.000 description 1
- 229910002651 NO3 Inorganic materials 0.000 description 1
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000013590 bulk material Substances 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 238000003486 chemical etching Methods 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 238000000975 co-precipitation Methods 0.000 description 1
- 238000005049 combustion synthesis Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005238 degreasing Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000000445 field-emission scanning electron microscopy Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000002223 garnet Substances 0.000 description 1
- 230000002706 hydrostatic effect Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910001960 metal nitrate Inorganic materials 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- SIWVEOZUMHYXCS-UHFFFAOYSA-N oxo(oxoyttriooxy)yttrium Chemical compound O=[Y]O[Y]=O SIWVEOZUMHYXCS-UHFFFAOYSA-N 0.000 description 1
- 238000007415 particle size distribution analysis Methods 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- 238000003980 solgel method Methods 0.000 description 1
- 239000012798 spherical particle Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005118 spray pyrolysis Methods 0.000 description 1
- 230000000638 stimulation Effects 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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Abstract
본 발명은 원료물질로서 이트륨 질산염(Y(NO3)3·6H2O)과 산화알루미늄(Al2O3)을 사용하고 분산제로서 PVA(Poly Vinyl Alcohol)을 사용하되, 그 사용량을 최적화하며 하소(Calcination), 열처리(Firing) 조건을 최적화하는 방법으로 부반응 물질인 이트륨 알루미늄 모노클리닉(Yttrium Aluminium monoclicnic, YAM, Y4Al2O9) 및 이트륨 알루미늄 페롭스카이트(Yttrium Aluminium Perovskite, YAP, YAlO3)이 포함되지 않은 고순도의 이트륨 알루미늄 가넷(Yttrium Aluminum Garnet, YAG, Y3Al5O12) 분말을 제조할 수 있는 효과가 있다.
또한 상기 제조한 고순도의 이트륨 알루미늄 가넷(Yttrium Aluminum Garnet, YAG, Y3Al5O12) 분말은 추가적인 소결조제 없이 최적의 소결조건으로 소결하므로 고밀도의 이트륨 알루미늄 가넷(Yttrium Aluminum Garnet, YAG, Y3Al5O12) 소결체를 제조할 수 있는 장점이 있다.
Description
도 2는 본 발명의 합성 및 소결을 위한 전반적인 공정도를 보여준다.
도 3은 본 발명의 YAG 분말의 열분해 거동을 보여준다.
도 4는 본 발명의 실시예 4의 YAG 분말과 실시예 5의 YAG 분말의 XRD 패턴을 비교한 결과를 보여준다.
도 5는 본 발명의 실시예 3의 YAG 분말과 실시예 4의 YAG 분말의 XRD 패턴을 비교한 결과를 보여준다.
도 6은 본 발명의 실시예 2 및 4의 YAG 분말의 XRD 패턴을 보여준다.
도 7은 본 발명의 실시예를 통해 제조한 열처리 전의 YAG 분말을 10시간 동안 볼밀링(Ball-milling)하여 YAG 미세분말을 제조하고 상기 미세분말의 미세구조를 SEM을 통하여 분석한 결과를 보여준다.
도 8은 본 발명의 실시예에 따른 YAG 소결체의 표면에 대하여 SEM을 이용하여 미세구조를 분석한 결과를 보여준다.
도 9는 본 발명의 실시예에 따른 YAG 소결체의 파단면을 SEM을 이용하여 분석한 결과를 보여준다.
도 10은 본 발명의 실시예 6의 YAG 소결체, 실시예 7의 YAG 소결체 및 실시예 8의 YAG 소결체에 대한 미세구조와 입도분포를 보여준다.
도 11은 실시예 6의 YAG 소결체, 실시예 7의 YAG 소결체 및 실시예 8의 YAG 소결체 표면의 미세구조를 분석한 결과를 보여준다.
도 12는 실시예 7의 YAG 소결체 및 실시예 8의 YAG 소결체의 파단면 미세구조를 분석한 결과를 보여준다.
샘플명 | 5wt% PVA 용액 | 하소조건 | 합성조건 | 볼밀링 | 소결조건 | 상대밀도 | ||
함량 | PVA 분자량 | |||||||
실시예 1 | LL10 | 30g | Mw. 9,000 | 600℃ | 1,500℃ | 10시간 | 1,650℃ | 95.6% |
1시간 | 8시간 | 6시간 | ||||||
실시예 2 | LH10 | 60g | Mw. 9,000 | 600℃ | 1,500℃ | 10시간 | 1,650℃ | 97.8% |
1시간 | 8시간 | 6시간 | ||||||
실시예 3 | HL10 | 30g | Mw. 146,000 | 600℃ | 1,500℃ | 10시간 | 1,650℃ | 95.1% |
1시간 | 8시간 | 6시간 | ||||||
실시예 4 | HH10 | 60g | Mw. 146,000 | 600℃ | 1,500℃ | 10시간 | 1,650℃ | 98.3% |
1시간 | 8시간 | 6시간 | ||||||
실시예 5 | HH10-1 | 60g | Mw. 146,000 | 600℃ | 1,300℃ | 10시간 | - | - |
1시간 | 8시간 | - |
샘플명 | 5wt% PVA 용액 | 하소조건 | 합성조건 | 볼밀링 | 소결조건 | 상대밀도 | ||
함량 | PVA 분자량 | |||||||
실시예 4 | HH10 | 60g | Mw. 146,000 | 600℃ | 1,500℃ | 10시간 | 1,650℃ | 98.3% |
1시간 | 8시간 | 6시간 | ||||||
실시예 6 | HH0 | 60g | Mw. 146,000 | 600℃ | 1,500℃ | 0시간 | 1,650℃ | 83.9% |
1시간 | 8시간 | 6시간 | ||||||
실시예 7 | HH20 | 60g | Mw. 146,000 | 600℃ | 1,500℃ | 20시간 | 1,650℃ | 99.0% |
1시간 | 8시간 | 6시간 | ||||||
실시예 8 | HH30 | 60g | Mw. 146,000 | 600℃ | 1,500℃ | 30시간 | 1,650℃ | 99.2% |
1시간 | 8시간 | 6시간 |
Claims (7)
- 이트륨 알루미늄 가넷(Yttrium Aluminum Garnet, YAG, Y3Al5O12) 소결체의 제조방법에 있어서,
이트륨 질산염(Y(NO3)3·6H2O)과 산화알루미늄(Al2O3)을 포함하는 슬러리를 제조하는 제 1 단계;
상기 슬러리에 상기 이트륨 질산염(Y(NO3)3·6H2O) 및 산화알루미늄(Al2O3)의 전체 중량에 대하여 2.5 내지 4배가 되도록 분자량(Mw.)이 146,000인 PVA(Poly Vinyl Alcohol) 5wt% 용액을 첨가하고 이를 혼합하여 슬러리-PVA 혼합액을 제조하는 제 2 단계;
상기 슬러리-PVA 혼합액을 90 내지 110℃ 핫플레이트에서 교반하며 1차 건조하는 제 3 단계;
상기 1차 건조된 슬러리-PVA 혼합액을 180 내지 220℃ 건조기에서 2차 건조하여 슬러리-PVA 분말을 제조하는 제 4 단계;
상기 슬러리-PVA 분말을 600℃에서 60분간 하소(Calcination)하여 슬러리 분말을 제조하는 제 5 단계;
상기 슬러리 분말을 1,500℃에서 8시간동안 열처리하여 이트륨 알루미늄 가넷(Y3Al5O12) 분말을 제조하는 제 6 단계;
상기 이트륨 알루미늄 가넷(Y3Al5O12) 분말을 20 내지 30시간동안 볼밀링하여 이트륨 알루미늄 가넷 미세분말로 제조하는 제 7 단계; 및
상기 이트륨 알루미늄 가넷 미세분말을 성형한 후 1,650℃에서 6시간동안 소결(Sintering)하여 이트륨 알루미늄 가넷 소결체를 제조하는 제 8 단계;를 포함하며,
상기 이트륨 알루미늄 가넷 소결체는 상대밀도가 99.0 내지 99.2%인 것을 특징으로 하는 이트륨 알루미늄 가넷(Yttrium Aluminum Garnet, YAG, Y3Al5O12) 소결체의 제조방법.
- 제 1 항에 있어서, 상기 산화알루미늄은 평균 입자크기가 25 내지 35㎚ 수준의 나노분말 상태인 것을 특징으로 하는 이트륨 알루미늄 가넷(Yttrium Aluminum Garnet, YAG, Y3Al5O12) 소결체의 제조방법.
- 제 1 항에 있어서, 상기 슬러리는 이트륨 질산염(Y(NO3)3·6H2O)과 산화알루미늄(Al2O3)이 3:4 내지 6의 몰비로 포함된 것을 특징으로 하는 이트륨 알루미늄 가넷(Yttrium Aluminum Garnet, YAG, Y3Al5O12) 소결체의 제조방법.
- 삭제
- 제 1 항에 있어서, 상기 이트륨 알루미늄 가넷(Y3Al5O12) 분말은 부반응 물질인 이트륨 알루미늄 모노클리닉(Yttrium Aluminium monoclicnic, YAM, Y4Al2O9) 및 이트륨 알루미늄 페롭스카이트(Yttrium Aluminium Perovskite, YAP, YAlO3)가 포함되지 않고 이트륨 알루미늄 가넷(Yttrium Aluminum Garnet, YAG, Y3Al5O12)만이 존재하는 것을 특징으로 하는 이트륨 알루미늄 가넷(Yttrium Aluminum Garnet, YAG, Y3Al5O12) 소결체의 제조방법.
- 제 1 항에 있어서, 상기 이트륨 알루미늄 가넷 미세분말은 이소프로필알코올을 용매로 사용하여 상기 이트륨 알루미늄 가넷(Y3Al5O12) 분말과 5㎜ 산화지르코니아(ZrO2)볼을 130 내지 170rpm의 속도로 볼밀링을 수행하여 제조하는 것을 특징으로 하는 이트륨 알루미늄 가넷(Yttrium Aluminum Garnet, YAG, Y3Al5O12) 소결체의 제조방법.
- 삭제
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