CN109081685A - 一种氧化铝陶瓷及其制备方法 - Google Patents
一种氧化铝陶瓷及其制备方法 Download PDFInfo
- Publication number
- CN109081685A CN109081685A CN201811069194.5A CN201811069194A CN109081685A CN 109081685 A CN109081685 A CN 109081685A CN 201811069194 A CN201811069194 A CN 201811069194A CN 109081685 A CN109081685 A CN 109081685A
- Authority
- CN
- China
- Prior art keywords
- aluminium oxide
- oxide ceramics
- preparation
- density
- solution
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 title claims abstract description 134
- 239000000919 ceramic Substances 0.000 title claims abstract description 50
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- 239000000843 powder Substances 0.000 claims abstract description 18
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 claims abstract description 16
- 230000006835 compression Effects 0.000 claims abstract description 16
- 238000007906 compression Methods 0.000 claims abstract description 16
- 238000005245 sintering Methods 0.000 claims abstract description 15
- 238000001035 drying Methods 0.000 claims abstract description 13
- CCJAYIGMMRQRAO-UHFFFAOYSA-N 2-[4-[(2-hydroxyphenyl)methylideneamino]butyliminomethyl]phenol Chemical compound OC1=CC=CC=C1C=NCCCCN=CC1=CC=CC=C1O CCJAYIGMMRQRAO-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000000178 monomer Substances 0.000 claims abstract description 9
- 238000001746 injection moulding Methods 0.000 claims abstract description 6
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 5
- 239000002002 slurry Substances 0.000 claims description 20
- 239000000243 solution Substances 0.000 claims description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 18
- ZIUHHBKFKCYYJD-UHFFFAOYSA-N n,n'-methylenebisacrylamide Chemical group C=CC(=O)NCNC(=O)C=C ZIUHHBKFKCYYJD-UHFFFAOYSA-N 0.000 claims description 17
- 239000007788 liquid Substances 0.000 claims description 16
- 238000003756 stirring Methods 0.000 claims description 11
- KWYHDKDOAIKMQN-UHFFFAOYSA-N N,N,N',N'-tetramethylethylenediamine Chemical group CN(C)CCN(C)C KWYHDKDOAIKMQN-UHFFFAOYSA-N 0.000 claims description 10
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 10
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titanium dioxide Inorganic materials O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 10
- 239000011837 N,N-methylenebisacrylamide Substances 0.000 claims description 7
- 239000000725 suspension Substances 0.000 claims description 7
- 238000010792 warming Methods 0.000 claims description 7
- 239000003999 initiator Substances 0.000 claims description 6
- YIXJRHPUWRPCBB-UHFFFAOYSA-N magnesium nitrate Chemical compound [Mg+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O YIXJRHPUWRPCBB-UHFFFAOYSA-N 0.000 claims description 6
- 239000000377 silicon dioxide Substances 0.000 claims description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 5
- 239000003054 catalyst Substances 0.000 claims description 5
- 239000002270 dispersing agent Substances 0.000 claims description 5
- 235000010215 titanium dioxide Nutrition 0.000 claims description 5
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- 229910052681 coesite Inorganic materials 0.000 claims description 4
- 229910052906 cristobalite Inorganic materials 0.000 claims description 4
- 239000003431 cross linking reagent Substances 0.000 claims description 4
- 239000011259 mixed solution Substances 0.000 claims description 4
- GCLGEJMYGQKIIW-UHFFFAOYSA-H sodium hexametaphosphate Chemical group [Na]OP1(=O)OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])O1 GCLGEJMYGQKIIW-UHFFFAOYSA-H 0.000 claims description 4
- 229910052682 stishovite Inorganic materials 0.000 claims description 4
- 229910052905 tridymite Inorganic materials 0.000 claims description 4
- 239000004411 aluminium Substances 0.000 claims description 3
- 239000012141 concentrate Substances 0.000 claims description 3
- 229910052593 corundum Inorganic materials 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 229910001845 yogo sapphire Inorganic materials 0.000 claims description 3
- BNGXYYYYKUGPPF-UHFFFAOYSA-M (3-methylphenyl)methyl-triphenylphosphanium;chloride Chemical compound [Cl-].CC1=CC=CC(C[P+](C=2C=CC=CC=2)(C=2C=CC=CC=2)C=2C=CC=CC=2)=C1 BNGXYYYYKUGPPF-UHFFFAOYSA-M 0.000 claims description 2
- 239000002994 raw material Substances 0.000 claims description 2
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical group [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 claims 4
- 229910001870 ammonium persulfate Inorganic materials 0.000 claims 2
- JLDSOYXADOWAKB-UHFFFAOYSA-N aluminium nitrate Inorganic materials [Al+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O JLDSOYXADOWAKB-UHFFFAOYSA-N 0.000 claims 1
- BWKOZPVPARTQIV-UHFFFAOYSA-N azanium;hydron;2-hydroxypropane-1,2,3-tricarboxylate Chemical compound [NH4+].OC(=O)CC(O)(C(O)=O)CC([O-])=O BWKOZPVPARTQIV-UHFFFAOYSA-N 0.000 claims 1
- FQPSGWSUVKBHSU-UHFFFAOYSA-N methacrylamide Chemical compound CC(=C)C(N)=O FQPSGWSUVKBHSU-UHFFFAOYSA-N 0.000 claims 1
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 claims 1
- 238000005266 casting Methods 0.000 abstract description 2
- 231100000053 low toxicity Toxicity 0.000 abstract description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 10
- 238000000034 method Methods 0.000 description 9
- 239000000499 gel Substances 0.000 description 8
- 230000008859 change Effects 0.000 description 7
- 239000011224 oxide ceramic Substances 0.000 description 5
- 229910052574 oxide ceramic Inorganic materials 0.000 description 5
- 229910052573 porcelain Inorganic materials 0.000 description 4
- 230000002378 acidificating effect Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- YWYZEGXAUVWDED-UHFFFAOYSA-N triammonium citrate Chemical compound [NH4+].[NH4+].[NH4+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O YWYZEGXAUVWDED-UHFFFAOYSA-N 0.000 description 3
- 238000002604 ultrasonography Methods 0.000 description 3
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 2
- 229910002651 NO3 Inorganic materials 0.000 description 2
- UIQORMPFIFWPOG-UHFFFAOYSA-N aluminum;magnesium;pentanitrate Chemical compound [Mg+2].[Al+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O UIQORMPFIFWPOG-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 239000002243 precursor Substances 0.000 description 2
- 238000003303 reheating Methods 0.000 description 2
- 239000004408 titanium dioxide Substances 0.000 description 2
- 239000005995 Aluminium silicate Substances 0.000 description 1
- 229920002148 Gellan gum Polymers 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 229910001051 Magnalium Inorganic materials 0.000 description 1
- UEZVMMHDMIWARA-UHFFFAOYSA-N Metaphosphoric acid Chemical compound OP(=O)=O UEZVMMHDMIWARA-UHFFFAOYSA-N 0.000 description 1
- 206010029350 Neurotoxicity Diseases 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 206010044221 Toxic encephalopathy Diseases 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- 210000005056 cell body Anatomy 0.000 description 1
- 230000009920 chelation Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 235000010492 gellan gum Nutrition 0.000 description 1
- 239000000216 gellan gum Substances 0.000 description 1
- 150000004676 glycans Chemical class 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000010903 husk Substances 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000007135 neurotoxicity Effects 0.000 description 1
- 231100000228 neurotoxicity Toxicity 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 229920001282 polysaccharide Polymers 0.000 description 1
- 239000005017 polysaccharide Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000000110 selective laser sintering Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000007569 slipcasting Methods 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000010345 tape casting Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/10—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on aluminium oxide
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/624—Sol-gel processing
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3231—Refractory metal oxides, their mixed metal oxides, or oxide-forming salts thereof
- C04B2235/3232—Titanium oxides or titanates, e.g. rutile or anatase
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3418—Silicon oxide, silicic acids or oxide forming salts thereof, e.g. silica sol, fused silica, silica fume, cristobalite, quartz or flint
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/44—Metal salt constituents or additives chosen for the nature of the anions, e.g. hydrides or acetylacetonate
- C04B2235/443—Nitrates or nitrites
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/44—Metal salt constituents or additives chosen for the nature of the anions, e.g. hydrides or acetylacetonate
- C04B2235/447—Phosphates or phosphites, e.g. orthophosphate or hypophosphite
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/74—Physical characteristics
- C04B2235/77—Density
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Dispersion Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Compositions Of Oxide Ceramics (AREA)
Abstract
本发明公开了一种氧化铝陶瓷的制备方法及制得的产品,其特征是,采用凝胶注模工艺制备了高强度且结构均匀的氧化铝陶瓷。其中,注凝体系的单体分别采用了低毒的N‑羟甲基丙烯酰胺和α‑甲基丙烯酸。为提高氧化铝粉体的高温烧结性能,添加了高温烧结助剂。干燥后的氧化铝陶瓷生坯的抗压强度为15~20Mpa,密度为1.5~2.0g/cm3。1500℃烧结后的氧化铝陶瓷的抗压强度为40~60MPa,密度为3.0~3.8g/cm3。采用凝胶注模法制备的氧化铝陶瓷密度高、强度大,并可达到近净成型的目的。
Description
技术领域
本发明属于无机非金属陶瓷技术领域,具体涉及一种氧化铝陶瓷的制备方法及制得的产品。
背景技术
凝胶注模成型技术自20世纪90年代初由美国橡树岭国家实验室提出后, 以坯体组成均匀、强度高、应用范围广泛以及成型的部件可靠、性能好等传统成型方法不可比拟的优势受到各国陶瓷研究工作者的重视。目前, 许多发达国家如美国、日本等已经把该项技术列为国家发展计划。它将高分子聚合理论引入到传统的注浆成型工艺中, 为陶瓷成型提供了新的思路。经过十几年的不断发展, 又提出了多糖大分子、金属鳌合反应等新的凝胶体系。同时在原有的理论基础上, 又发展了水基流延成型、与激光选区烧结成型技术连用(SLS)制备陶瓷部件等新的成型技术。在其应用领域, 由单一组分陶瓷扩大到多组分陶瓷、多孔陶瓷、梯度陶瓷再到复杂陶瓷异型品的制备。虽然它的发展历史较短, 却已得到广泛的应用, 逐渐成为新型陶瓷成型技术的代表。
丙烯酰胺作为凝胶注模单体最先提出,且研究的最为成熟。但丙烯酰胺单体具有神经毒性,易对人体产生损害。因此采用低毒或无毒的有机单体是其发展趋势。已公开的专利号CN 103072182A提供了一种基于结冷胶凝胶的陶瓷凝胶注模方法,虽然使用的单体新颖,但其引发凝胶的过程复杂。李鑫等人在其论文“N-羟甲基丙烯酰胺体系凝胶注模成型氧化铝陶瓷”中虽然采用了低毒性的N-羟甲基丙烯酰胺作为有机单体,但其氧化铝陶瓷的强度仅有32MPa。氧化铝粉体高温下很难烧结致密化,因此需加入适量的烧结助剂促进其烧结。此外,一些研究者通过加入高岭土等物质作为烧结助剂,但实验发现,添加这些物质,干燥过程中易开裂,陶瓷的成型性不好。
发明内容
发明目的:为了克服现有技术中存在的不足,本发明提供一种具备高抗压强度、密度高、硬度大的氧化铝陶瓷及其制备方法。
技术方案:为解决上述技术问题,本发明的一种氧化铝陶瓷,其原料由氧化铝粉体、,其质量比为:(50~60):(0.8~1):(0.8~1): (0.04~0.06) :(0.8~1): (0.45~0.5):( 1~20): (0~60)。
优选的,所选有机单体为N-羟甲基丙烯酰胺或α-甲基丙烯酸。
所述烧结助剂为硅溶胶,铝溶胶,硝酸铝和硝酸镁混合溶液,纳米气相SiO2粉体,金红石型钛白粉中的一种或多种的混合物;其固含量为氧化铝粉体质量的1~2wt%。
优选地,所述催化剂为TEMED。
优选地,所述引发剂为APS。
优选地,所述分散剂为六偏磷酸钠或柠檬酸铵。
优选地,所述交联剂为N,N-亚甲基双丙烯酰胺(MBAM)。上述的氧化铝陶瓷的制备方法,其制备步骤包括如下:
(1)制备氧化铝浓悬浮体:a,在预先配制好的N-羟甲基丙烯酰胺或α-甲基丙烯酸与MBAM 的混合溶液中, 加入适量的分散剂, 然后将Al2O3粉体分散于预混液中;b,在上述溶液中加入一定量的高温烧结助剂溶液,电动搅拌均匀并超声10~20min,得到氧化铝浓悬浮体浆料。
(2)凝胶注模:将上述浆料加入催化剂TEMED 和引发剂APS , 快速搅拌10~20s后注入模具,常温下浆料固化得到坯体。
(3)干燥、热处理:将模具放入恒温干燥箱中60℃干燥5~10h后,脱模,并继续将坯体干燥10~12h,得到生坯。最后将生坯置于马弗炉中以3℃/min升温至1500℃并保温2h,得到致密的氧化铝陶瓷。
有益效果:本发明方法制备的氧化铝陶瓷相比于现有的凝胶注模制备的氧化铝陶瓷,具有以下优点:
(1)本发明制备的氧化铝陶瓷的抗压强度相对于现有技术而言提高50%以上,不会产生开裂等技术问题;
(2)首先使用了前驱体溶液作为烧结助剂并与气相SiO2、钛白粉混合使用,且总添加量仅为氧化铝粉体的1~2%,前驱体溶液可与氧化铝粉体达到纳米级分散,得到的氧化铝陶瓷抗压强度高、密度大,成型性好,接近其理论密度。
附图说明
图1是所制备的氧化铝陶瓷实物图。
具体实施方式
下面结合附图对本发明作更进一步的说明。
实施例一:
事先已制备好的酸性硅溶胶(pH值为3~4,SiO2≥10wt.%),聚合氯化铝溶胶(Al2O3≥17wt.%),将5.62g Al(NO3)3·9H2O和1.92g Mg(NO3)2·6H2O溶于20g水中,得到硝酸镁铝溶液,气相SiO2纳米粉体(粒径在7~40nm,团聚颗粒粒径为200~400nm)和金红石型钛白粉,平均粒径1µm。
称取1g N-羟甲基丙烯酰胺、1g N,N-亚甲基双丙烯酰胺(MBAM)和0.25g六偏磷酸钠溶于25g水中得到预混液, 然后将50g平均粒径为1µm 的Al2O3粉体分散于预混液中;在上述溶液中加入17g的酸性硅溶胶和作为高温烧结助剂,电动搅拌均匀并超声10min;得到氧化铝悬浮体浆料。
将上述浆料中滴加0.04g的TEMED 和由1g APS和5g水配成的溶液 , 快速搅拌10s后注入模具,常温下浆料固化得到坯体。将模具放入恒温干燥箱中60℃干燥5h后,脱模,并继续将坯体干燥10h,得到生坯,表面无裂纹。最后将生坯置于马弗炉中以3℃/min升温至1500℃并保温2h,得到致密氧化铝陶瓷,。
所得到的氧化铝陶瓷生坯的抗压强度约为18MPa,密度为1.85g/cm3。致密氧化铝陶瓷的抗压强度约为50MPa,密度为3.25g/cm3,重烧线变化率,1500℃×2h≤0.3%。所得到的泡沫陶瓷可在1800℃以下长期使用,并可机械加工成相应的产品,如图1所示。
实施例二:
称取1g N-羟甲基丙烯酰胺、1g N,N-亚甲基双丙烯酰胺(MBAM)和0.3g柠檬酸铵溶于25g水中得到预混液, 然后将60g平均粒径为1µm 的Al2O3粉体分散于预混液中;在上述溶液中加入7g的聚合氯化铝溶胶作为高温烧结助剂,电动搅拌均匀并超声20min;得到氧化铝悬浮体浆料。
将上述浆料中滴加0.04g的TEMED 和由1g APS和5g水配成的溶液 , 快速搅拌20s后注入模具,常温下浆料固化得到坯体。将模具放入恒温干燥箱中60℃干燥7h后,脱模,并继续将坯体干燥10h,得到生坯。最后将生坯置于马弗炉中以3℃/min升温至1500℃并保温2h,得到致密氧化铝陶瓷。
所得到的氧化铝陶瓷生坯的抗压强度为15.6MPa,密度为1.6g/cm3。致密氧化铝陶瓷的抗压强度为42MPa,密度为3.0g/cm3,重烧线变化1500℃×2h≤0.3%。
实施例三:
称取5g α-甲基丙烯酸、1g N,N-亚甲基双丙烯酰胺(MBAM)和0.3g六偏磷酸钠溶于25g水中得到预混液, 然后将60g平均粒径为1µm 的Al2O3粉体分散于预混液中;在上述溶液中加入7g的硝酸镁铝溶液作为高温烧结助剂,电动搅拌均匀并超声15min;得到氧化铝悬浮体浆料。
将上述浆料中滴加0.04g的TEMED 和由1g APS和5g水配成的溶液 , 快速搅拌10s后注入模具,常温下浆料固化得到坯体。将模具放入恒温干燥箱中60℃干燥10h后,脱模,并继续将坯体干燥12h,得到生坯。最后将生坯置于马弗炉中以3℃/min升温至1500℃并保温2h,得到致密氧化铝陶瓷。
所得到的氧化铝陶瓷生坯的抗压强度为16.8MPa,密度为1.82g/cm3。致密氧化铝陶瓷的抗压强度为45MPa,密度为3.07g/cm3,重烧线变化1500℃×2h≤0.3%。
实施例四:
称取5g α-甲基丙烯酸、1g N,N-亚甲基双丙烯酰胺(MBAM)和0.25g六偏磷酸钠溶于25g水中得到预混液, 然后将50g平均粒径为1µm 的Al2O3粉体和5g的酸性硅溶胶、0.5g钛白粉分散于预混液中,混合搅拌均匀并超声20min,得到氧化铝悬浮体浆料。
将上述浆料中滴加0.04g的TEMED 和由1g APS和5g水配成的溶液 , 快速搅拌10s后注入模具,常温下浆料固化得到坯体。将模具放入恒温干燥箱中60℃干燥5h后,脱模,并继续将坯体干燥10h,得到生坯。最后将生坯置于马弗炉中以3℃/min升温至1500℃并保温2h,得到致密氧化铝陶瓷。
所得到的氧化铝陶瓷生坯的抗压强度为19MPa,密度为1.83g/cm3。致密氧化铝陶瓷的抗压强度为54MPa,密度为3.72g/cm3,重烧线变化1500℃×2h≤0.3%。
实施例五:
称取1g N-羟甲基丙烯酰胺、1g N,N-亚甲基双丙烯酰胺(MBAM)和0.3g柠檬酸铵溶于25g水中得到预混液, 然后将60g的Al2O3粉体和3g的硝酸镁铝溶液、0.3g纳米气相SiO2粉体分散于预混液中,混合搅拌均匀并超声20min;得到氧化铝悬浮体浆料。
将上述浆料中滴加0.04g的TEMED 和由1g APS和10g水配成的溶液 , 快速搅拌10s后注入模具,常温下浆料固化得到坯体。将模具放入恒温干燥箱中60℃干燥10h后,脱模,并继续将坯体干燥12h,得到生坯。最后将生坯置于马弗炉中以3℃/min升温至1500℃并保温2h,得到致密氧化铝陶瓷。
所得到的氧化铝陶瓷生坯的抗压强度为20MPa,密度为1.77g/cm3。致密氧化铝陶瓷的抗压强度为60MPa,密度为3.75g/cm3,重烧线变化1500℃×2h≤0.3%。
以上所述仅是本发明的优选实施方式,应当指出:对于本技术领域的普通技术人员来说,在不脱离本发明原理的前提下,还可以做出若干改进和润饰,这些改进和润饰也应视为本发明的保护范围。
Claims (10)
1.一种氧化铝陶瓷,其特征在于:制备原料包括以下组分:
氧化铝粉体、有机单体、交联剂、催化剂、引发剂、分散剂、烧结助剂和水,其质量比例范围依次为:(50~60):(0.8~1):(0.8~1): (0.04~0.06) :(0.8~1): (0.45~0.5):(1~20): (0~60)。
2.根据权利要求1所述的氧化铝陶瓷,其特征在于:所述烧结助剂为硅溶胶、铝溶胶、硝酸铝和硝酸镁混合溶液与纳米气相SiO2粉体、金红石型钛白粉中的混合物;且质量比为10:1,其总添加量为氧化铝粉体质量的1~2wt%。
3.根据权利要求1所述的氧化铝陶瓷,其特征在于:所述有机单体为N-羟甲基丙烯酰胺或α-甲基丙烯酸。
4.交联剂为N,N-亚甲基双丙烯酰胺(MBAM)。
5.根据权利要求1所述的氧化铝陶瓷,其特征在于:所述引发剂为过硫酸铵(APS)。
6.根据权利要求1所述的氧化铝陶瓷,其特征在于:所述催化剂为四甲基乙二胺(TEMED)。
7.根据权利要求1所述的氧化铝陶瓷,其特征在于:所述分散剂为六偏磷酸钠或柠檬酸铵。
8.一种基于权利要求1所述的氧化铝陶瓷的制备方法,其特征在于制备步骤如下:
(1)制备氧化铝浓悬浮体:a,在已配置好的N-羟甲基丙烯酰胺或α-甲基丙烯酸与MBAM的预混液中,加入适量的分散剂, 然后将Al2O3粉体分散于预混液中;b,在上述溶液中加入一定量的高温烧结助剂,电动搅拌均匀并超声振动,得到氧化铝浓悬浮体浆料;
(2)凝胶注模:在上述浆料中加入催化剂TEMED 和引发剂APS溶液 , 快速搅拌10~20s后注入模具,常温下浆料固化得到坯体;
(3)干燥、高温烧结:将模具放入恒温干燥箱中60℃干燥5~10h后,脱模,并继续将坯体干燥10~12h,得到生坯,最后将生坯置于马弗炉中以3℃/min升温至1500℃并保温2h,得到氧化铝陶瓷。
9.一种基于权利要求8所述的氧化铝陶瓷的制备方法,其特征在于:在已配置好的N-羟甲基丙烯酰胺或α-甲基丙烯酸与MBAM 的预混液中,单体与交联剂和水的质量比为:(1~5):1:( 20~30),水含量为总水量的30~50%,此外硝酸铝和硝酸镁混合溶液中,水含量为总水量的10~30%,引发剂APS溶液中,水含量为总含水量的2~5%。
10.根据权利要求8所述的氧化铝陶瓷,其特征在于:氧化铝陶瓷生坯的抗压强度为15~20Mpa,密度为1.5~2.0g/cm3,1500℃烧结后的氧化铝陶瓷的抗压强度为40~60MPa,密度为3.0~3.8g/cm3。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201811069194.5A CN109081685B (zh) | 2018-09-13 | 2018-09-13 | 一种氧化铝陶瓷及其制备方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201811069194.5A CN109081685B (zh) | 2018-09-13 | 2018-09-13 | 一种氧化铝陶瓷及其制备方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN109081685A true CN109081685A (zh) | 2018-12-25 |
CN109081685B CN109081685B (zh) | 2021-09-24 |
Family
ID=64841687
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201811069194.5A Active CN109081685B (zh) | 2018-09-13 | 2018-09-13 | 一种氧化铝陶瓷及其制备方法 |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN109081685B (zh) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2021135883A1 (zh) * | 2019-12-30 | 2021-07-08 | 深圳市绎立锐光科技开发有限公司 | 荧光陶瓷的制备方法及荧光陶瓷 |
CN114538897A (zh) * | 2020-11-25 | 2022-05-27 | 上海三思电子工程有限公司 | 一种凝胶注模陶瓷生坯的烧结方法 |
CN115430423A (zh) * | 2022-09-21 | 2022-12-06 | 北京化工大学 | 一种稀土掺杂的球形氧化铝基PtSn催化剂及其制备方法和应用 |
Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1014945A (en) * | 1962-11-15 | 1965-12-31 | Roehm & Haas Gmbh | Recovery of ammonia and sulphur dioxide from sulphuric acid containing ammonium sulphate or bisulphate |
JPH1179828A (ja) * | 1997-09-08 | 1999-03-23 | Sumitomo Metal Ind Ltd | アルミナセラミックス基板の製造方法 |
CN1654417A (zh) * | 2004-02-12 | 2005-08-17 | 河北理工学院 | 胶冻切割成型法生产高性能氧化铝系陶瓷基片的生产工艺 |
CN101412620A (zh) * | 2008-11-14 | 2009-04-22 | 西安交通大学 | 溶胶作为助剂制备多孔氧化铝陶瓷支撑体的方法 |
CN101698606A (zh) * | 2009-11-20 | 2010-04-28 | 苏州创元投资发展(集团)有限公司 | 一种原位反应低温制备氧化铝陶瓷的方法 |
CN102757237A (zh) * | 2012-06-28 | 2012-10-31 | 航天材料及工艺研究所 | 一种陶瓷材料烧结助剂的加入方法 |
CN103304242A (zh) * | 2013-06-13 | 2013-09-18 | 景德镇陶瓷学院 | 一种陶瓷烧结助剂的添加方法 |
CN104003732A (zh) * | 2014-05-30 | 2014-08-27 | 西安交通大学 | 一种凝胶注模涡轮叶片陶瓷铸型真空脱脂的方法 |
CN105272339A (zh) * | 2015-10-13 | 2016-01-27 | 电子科技大学 | 一种氧化铝通孔陶瓷阀的制备方法 |
CN107619264A (zh) * | 2017-10-16 | 2018-01-23 | 深圳市商德先进陶瓷股份有限公司 | 氧化铝陶瓷基板及其制备方法和应用 |
-
2018
- 2018-09-13 CN CN201811069194.5A patent/CN109081685B/zh active Active
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1014945A (en) * | 1962-11-15 | 1965-12-31 | Roehm & Haas Gmbh | Recovery of ammonia and sulphur dioxide from sulphuric acid containing ammonium sulphate or bisulphate |
JPH1179828A (ja) * | 1997-09-08 | 1999-03-23 | Sumitomo Metal Ind Ltd | アルミナセラミックス基板の製造方法 |
CN1654417A (zh) * | 2004-02-12 | 2005-08-17 | 河北理工学院 | 胶冻切割成型法生产高性能氧化铝系陶瓷基片的生产工艺 |
CN101412620A (zh) * | 2008-11-14 | 2009-04-22 | 西安交通大学 | 溶胶作为助剂制备多孔氧化铝陶瓷支撑体的方法 |
CN101698606A (zh) * | 2009-11-20 | 2010-04-28 | 苏州创元投资发展(集团)有限公司 | 一种原位反应低温制备氧化铝陶瓷的方法 |
CN102757237A (zh) * | 2012-06-28 | 2012-10-31 | 航天材料及工艺研究所 | 一种陶瓷材料烧结助剂的加入方法 |
CN103304242A (zh) * | 2013-06-13 | 2013-09-18 | 景德镇陶瓷学院 | 一种陶瓷烧结助剂的添加方法 |
CN104003732A (zh) * | 2014-05-30 | 2014-08-27 | 西安交通大学 | 一种凝胶注模涡轮叶片陶瓷铸型真空脱脂的方法 |
CN105272339A (zh) * | 2015-10-13 | 2016-01-27 | 电子科技大学 | 一种氧化铝通孔陶瓷阀的制备方法 |
CN107619264A (zh) * | 2017-10-16 | 2018-01-23 | 深圳市商德先进陶瓷股份有限公司 | 氧化铝陶瓷基板及其制备方法和应用 |
Non-Patent Citations (3)
Title |
---|
LINA WU ET AL.: "Controlled fabrication of porous Al2O3 ceramic by N,N′-dimethylformamide-based gel-casting", 《SCRIPTA MATERIALIA》 * |
朱小平等: "凝胶注模工艺成型氧化铝陶瓷的研究", 《中国陶瓷》 * |
李悦彤等: "氧化铝陶瓷低温烧结助剂的研究进展", 《硅酸盐陶瓷通报》 * |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2021135883A1 (zh) * | 2019-12-30 | 2021-07-08 | 深圳市绎立锐光科技开发有限公司 | 荧光陶瓷的制备方法及荧光陶瓷 |
CN114538897A (zh) * | 2020-11-25 | 2022-05-27 | 上海三思电子工程有限公司 | 一种凝胶注模陶瓷生坯的烧结方法 |
CN115430423A (zh) * | 2022-09-21 | 2022-12-06 | 北京化工大学 | 一种稀土掺杂的球形氧化铝基PtSn催化剂及其制备方法和应用 |
CN115430423B (zh) * | 2022-09-21 | 2024-03-29 | 北京化工大学 | 一种稀土掺杂的球形氧化铝基PtSn催化剂及其制备方法和应用 |
Also Published As
Publication number | Publication date |
---|---|
CN109081685B (zh) | 2021-09-24 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN109081685A (zh) | 一种氧化铝陶瓷及其制备方法 | |
Tulliani et al. | Development and mechanical characterization of novel ceramic foams fabricated by gel-casting | |
Qian et al. | Preparation of porous mullite ceramics using fly ash cenosphere as a pore‐forming agent by gelcasting process | |
CN104003732B (zh) | 一种凝胶注模涡轮叶片陶瓷铸型真空脱脂的方法 | |
CN102718512A (zh) | 一种抗热震刚玉-尖晶石质耐火浇注料及其制备方法 | |
CN103030382A (zh) | 低毒凝胶体系注凝成型熔融石英陶瓷的方法 | |
CN106316350B (zh) | 一种保健抑菌耐磨瓷砖 | |
CN103011883A (zh) | 一种超高温轻质氧化锆隔热材料的制备方法 | |
Yin et al. | Fabrication and properties of porous Si3N4 ceramics by aqueous gelcasting using low-toxic DMAA gelling agent | |
CN109279909A (zh) | 一种高强度碳化硼多孔陶瓷的制备方法 | |
CN101747054A (zh) | 含金属硅粉的氮化硅陶瓷材料凝胶注模成型方法 | |
CN110483008A (zh) | 一种用于光固化3d打印陶瓷的浆料及其陶瓷产品制备方法 | |
CN109761614A (zh) | 一种AlON陶瓷的凝胶注模成型方法 | |
CN103482873A (zh) | 振动注浆成型方法制备熔融石英陶瓷 | |
CN102942377B (zh) | 一种改性膨润土陶瓷坯体增强剂及其制作方法和使用方法 | |
JPH04139079A (ja) | 多孔質セラミックスの製造方法 | |
CN102942374A (zh) | 一种凝胶浇注成型坯体的脱水固化处理方法 | |
CN111233468A (zh) | 结构件用钇稳定锆粉的制备方法 | |
CN105130414B (zh) | 一种制备超高温隔热Yb3Al5O12陶瓷元件的方法 | |
CN106830955A (zh) | 一种微波干燥制备不烧改性高纯镁铝尖晶石复合砖的方法 | |
CN107344861A (zh) | 一种窑炉内壁用高温耐火材料及其制备方法 | |
JP3094148B2 (ja) | 軽量耐火物の製造方法 | |
Ma et al. | Gelcasting of alumina with a mixed PVP–MAM system | |
CN108689721A (zh) | 一种含碳纤维的铅锌尾矿粉加气混凝土及其制备方法 | |
CN107188545A (zh) | 一种利用硅溶胶复配物混悬注浆制备氧化铝日用陶瓷坯的方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
GR01 | Patent grant | ||
GR01 | Patent grant | ||
TR01 | Transfer of patent right | ||
TR01 | Transfer of patent right |
Effective date of registration: 20231223 Address after: Building 6, No. 15 Jingang Road, Dongping Town, Lishui District, Nanjing City, Jiangsu Province, 210000 (Industrial Concentration Zone, Dongping Town) Patentee after: NANJING POLYTECHNIC YULONG NEW MATERIALS POLYTRON TECHNOLOGY CO.,LTD. Address before: 211000 Dongping town industrial concentration zone, Nanjing City, Jiangsu Province Patentee before: NANJING XINDA CRYSTAL MATERIAL TECHNOLOGY Co.,Ltd. |