CN113582672A - Formula of high-aluminum ceramic granulation powder with low carbonate content - Google Patents
Formula of high-aluminum ceramic granulation powder with low carbonate content Download PDFInfo
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- CN113582672A CN113582672A CN202110986316.2A CN202110986316A CN113582672A CN 113582672 A CN113582672 A CN 113582672A CN 202110986316 A CN202110986316 A CN 202110986316A CN 113582672 A CN113582672 A CN 113582672A
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- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 title claims abstract description 16
- 239000000843 powder Substances 0.000 title claims description 14
- 238000005469 granulation Methods 0.000 title claims description 8
- 230000003179 granulation Effects 0.000 title claims description 8
- 239000000919 ceramic Substances 0.000 title description 6
- 229910052782 aluminium Inorganic materials 0.000 title description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 14
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 22
- MRELNEQAGSRDBK-UHFFFAOYSA-N lanthanum(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[La+3].[La+3] MRELNEQAGSRDBK-UHFFFAOYSA-N 0.000 claims description 20
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 18
- 239000000377 silicon dioxide Substances 0.000 claims description 11
- 239000005995 Aluminium silicate Substances 0.000 claims description 10
- 235000012211 aluminium silicate Nutrition 0.000 claims description 10
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 claims description 10
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims description 10
- SIWVEOZUMHYXCS-UHFFFAOYSA-N oxo(oxoyttriooxy)yttrium Chemical compound O=[Y]O[Y]=O SIWVEOZUMHYXCS-UHFFFAOYSA-N 0.000 claims description 10
- 235000012239 silicon dioxide Nutrition 0.000 claims description 10
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 claims description 9
- 239000004408 titanium dioxide Substances 0.000 claims description 9
- 229910001928 zirconium oxide Inorganic materials 0.000 claims description 9
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 claims description 8
- 229910000423 chromium oxide Inorganic materials 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 3
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 2
- 238000009472 formulation Methods 0.000 claims 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 abstract description 12
- 238000005245 sintering Methods 0.000 abstract description 11
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 abstract description 6
- 229910002092 carbon dioxide Inorganic materials 0.000 abstract description 6
- 239000001569 carbon dioxide Substances 0.000 abstract description 6
- BDAGIHXWWSANSR-NJFSPNSNSA-N hydroxyformaldehyde Chemical compound O[14CH]=O BDAGIHXWWSANSR-NJFSPNSNSA-N 0.000 abstract description 4
- 229910000018 strontium carbonate Inorganic materials 0.000 abstract description 4
- 229910000019 calcium carbonate Inorganic materials 0.000 abstract description 3
- 229910044991 metal oxide Inorganic materials 0.000 abstract description 3
- 150000004706 metal oxides Chemical class 0.000 abstract description 3
- 235000020610 powder formula Nutrition 0.000 abstract description 3
- 150000004649 carbonic acid derivatives Chemical class 0.000 abstract description 2
- 239000011148 porous material Substances 0.000 abstract description 2
- 235000013350 formula milk Nutrition 0.000 description 15
- 238000000034 method Methods 0.000 description 7
- 239000000463 material Substances 0.000 description 6
- 239000002344 surface layer Substances 0.000 description 5
- QDOXWKRWXJOMAK-UHFFFAOYSA-N dichromium trioxide Chemical compound O=[Cr]O[Cr]=O QDOXWKRWXJOMAK-UHFFFAOYSA-N 0.000 description 4
- 238000000354 decomposition reaction Methods 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 2
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 238000000498 ball milling Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 238000009766 low-temperature sintering Methods 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000012768 molten material Substances 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 229910001404 rare earth metal oxide Inorganic materials 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
Classifications
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- 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
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- 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
- C04B2235/3224—Rare earth oxide or oxide forming salts thereof, e.g. scandium oxide
- C04B2235/3225—Yttrium oxide or oxide-forming salts thereof
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- 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
- C04B2235/3224—Rare earth oxide or oxide forming salts thereof, e.g. scandium oxide
- C04B2235/3227—Lanthanum oxide or oxide-forming salts thereof
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- 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
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- 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
- C04B2235/3241—Chromium oxides, chromates, or oxide-forming salts thereof
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- 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
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- 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
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- 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
- C04B2235/349—Clays, e.g. bentonites, smectites such as montmorillonite, vermiculites or kaolines, e.g. illite, talc or sepiolite
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- 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
Abstract
The invention discloses a high-alumina ceramic granulated powder formula with low carbonate content, which contains more carbonates such as calcium carbonate and strontium carbonate in the traditional high-alumina granulated powder formula, can decompose and produce metal oxides and carbon dioxide gas during high-temperature sintering, and can cause internal pores of a sintered product and influence the product quality when the carbon dioxide gas cannot be discharged in time.
Description
Technical Field
The invention relates to the technical field of ceramic granulated powder, in particular to a formula of high-aluminum ceramic granulated powder with low carbonate content.
Background
The high-alumina ceramic granulated powder has a plurality of formulas, and typical formulas comprise alumina, magnesia, strontium carbonate, calcium carbonate, silica, zirconia, rare earth, kaolin, talcum powder and the like; the high-alumina ceramic granulated powder prepared by a similar formula is used for downstream high-alumina ceramic products, and a user reflects that the phenomenon of more micropores and bubbles in the products can occur, so that the light reflection and refraction of the products are influenced, and the service life and the performance of the products can be reduced in the using process.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, provides a formula of high-alumina ceramic granulated powder with low carbonate content, avoids gas generated by decomposition in a sintering process by reducing the proportion of carbonate materials, effectively avoids the micropore bubble phenomenon of a sintering-free finished product, and can effectively solve the problems in the background art.
In order to achieve the purpose, the invention provides the following technical scheme: a formula of high-alumina ceramic granulation powder with low carbonate content comprises lanthanum oxide, zirconium oxide, kaolin, yttrium oxide, talcum powder, silicon dioxide, titanium dioxide, chromium oxide and aluminum oxide.
As a preferred technical scheme of the invention, the formula comprises the following components in percentage by weight:
lanthanum oxide: 0.10 to 2.0 percent;
zirconium oxide: 0.1 to 3.0 percent;
kaolin: 0.1 to 2.0 percent;
yttrium oxide: 0.01 to 1.0 percent;
talc powder: 0.1 to 1.5 percent;
silicon dioxide: 1.0-5.0%;
titanium dioxide: 0.1-2.5%;
chromium oxide: 0.1 to 2.0 percent;
the balance being alumina.
As a preferred technical scheme of the invention, the formula comprises the following components in percentage by weight:
lanthanum oxide: 1.0 percent;
zirconium oxide: 2.0 percent;
kaolin: 2.0 percent;
yttrium oxide: 0.6 percent;
talc powder: 0.8 percent;
silicon dioxide: 3.0 percent;
titanium dioxide: 1.5 percent;
chromium oxide: 1.2 percent;
the balance being alumina.
Compared with the prior art, the invention has the beneficial effects that: the traditional high-aluminum granulated powder formula contains more carbonates such as calcium carbonate, strontium carbonate and the like, and can decompose and produce metal oxides and carbon dioxide gas during high-temperature sintering, when the carbon dioxide gas can not be discharged in time, the internal pores of the sintered product can be caused, and the product quality is influenced, therefore, the formula adopts a form without adding carbonate, meanwhile, the component proportion of silicon dioxide and titanium dioxide is increased, metal oxide generated by decomposing carbonate is replaced, the system is enhanced, and the component of chromium sesquioxide is increased at the same time, in the sintering process, the material can react with alumina to form a sintering structure with good flattening and compact molecules, effectively improve the problem of bubbles in a sintered part, meanwhile, a compact and smooth coating can be formed on the surface layer of the sintered part, the porosity of the surface layer is reduced, the wear resistance of the surface layer is improved, and the light reflection and refraction capability of a product is improved.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Through analyzing the sintered high-alumina ceramic, discover that the internal micropore bubbles mainly come from the sintering process, the carbon dioxide gas generated by the thermal decomposition of internal carbonate, when the ceramic blank is manufactured, the external part of the ceramic blank is extruded and formed, the internal filler is compact, the carbon dioxide gas generated by decomposition cannot be discharged in time, can only be dissolved in the molten material and is mixed with the material to form micropore bubbles, when the bubbles on the surface layer escape, the problem of bubble breakage can exist, micropores appear on the surface of a workpiece, and meanwhile, the compact layer on the surface of the workpiece is also destroyed, so that the wear resistance of the workpiece is influenced.
Therefore, the formula of the high-alumina ceramic granulation powder with low carbonate content is provided, bubbles generated by decomposition of raw materials in the sintering process are reduced, chromium sesquioxide is introduced, a sintering structure with good flattening and dense molecules is formed in the sintering process, the overall performance of a workpiece is improved, the workpiece is positioned on the surface layer, the workpiece can be combined with alumina to form a dense coating, the wear resistance is effectively improved, and the porosity is reduced;
and the proportion of lanthanum oxide, zirconium oxide and yttrium oxide is correspondingly increased, the density of the alumina ceramic is obviously increased, the rare earth oxide is a very good surface active substance, the wettability of the material can be improved, the effect of reducing the sintering temperature is finally achieved, low-temperature sintering is facilitated, the mutual solubility of the material in the sintering process is improved, and the internal porosity is reduced.
The first embodiment is as follows:
the invention provides a technical scheme that: a formula of high-alumina ceramic granulation powder with low carbonate content comprises the following components in percentage by weight:
lanthanum oxide: 1.0 percent;
zirconium oxide: 2.0 percent;
kaolin: 2.0 percent;
yttrium oxide: 0.6 percent;
talc powder: 0.8 percent;
silicon dioxide: 3.0 percent;
titanium dioxide: 1.5 percent;
chromium oxide: 1.2 percent;
the balance being alumina.
Example two:
the invention provides a technical scheme that: a formula of high-alumina ceramic granulation powder with low carbonate content comprises the following components in percentage by weight:
lanthanum oxide: 0.15 percent;
zirconium oxide: 0.1 percent;
kaolin: 1.2 percent;
yttrium oxide: 0.32 percent;
talc powder: 0.8 percent;
silicon dioxide: 3.5 percent;
titanium dioxide: 2.0 percent;
chromium oxide: 1.5 percent;
the balance being alumina.
Meanwhile, a control group is set, and the formula proportion is as follows:
lanthanum oxide: 0.10 to 2.0 percent;
strontium carbonate: 0.1 to 3.0 percent;
kaolin: 0.1 to 1.8 percent;
yttrium oxide: 0.01 to 0.9 percent;
talc powder: 0.1 to 3.5 percent;
silicon dioxide: 1.0-5.0%;
the balance being alumina.
Grinding the raw materials in the proportion by adopting a wet ball milling mode, then preparing blanks from the raw materials with different formulas, keeping the temperature of the materials at 100 ℃, pressing the blanks at the pressure of 3 MPA for 20 s, and then firing the blank; the temperature of the initial firing furnace is 200 ℃, the temperature is kept for 4 h, the temperature is raised to 400 ℃ and kept for 2 h, then the temperature is raised to 600 ℃ and kept for 2 h, the temperature is raised to 900 ℃ and kept for 2 h, the temperature is raised to 1250 ℃ and kept for 4 h, and finally the mixture is cooled to 100 ℃ along with the furnace and taken out of the furnace;
through the porosity detection of the first example, the second example and the control group, the porosity of the first example is reduced by 56% compared with the control group, and the porosity of the second example is reduced by 52% compared with the control group.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (3)
1. A formula of high-alumina ceramic granulated powder with low carbonate content is characterized in that: the formula consists of lanthanum oxide, zirconium oxide, kaolin, yttrium oxide, talcum powder, silicon dioxide, titanium dioxide, chromium oxide and aluminum oxide.
2. The low carbonate, high alumina ceramic granulation powder formulation of claim 1, wherein: the formula comprises the following components in percentage by weight:
lanthanum oxide: 0.10 to 2.0 percent;
zirconium oxide: 0.1 to 3.0 percent;
kaolin: 0.1 to 2.0 percent;
yttrium oxide: 0.01 to 1.0 percent;
talc powder: 0.1 to 1.5 percent;
silicon dioxide: 1.0-5.0%;
titanium dioxide: 0.1-2.5%;
chromium oxide: 0.1 to 2.0 percent;
the balance being alumina.
3. The low carbonate, high alumina ceramic granulation powder formulation of claim 1, wherein: the formula comprises the following components in percentage by weight:
lanthanum oxide: 1.0 percent;
zirconium oxide: 2.0 percent;
kaolin: 2.0 percent;
yttrium oxide: 0.6 percent;
talc powder: 0.8 percent;
silicon dioxide: 3.0 percent;
titanium dioxide: 1.5 percent;
chromium oxide: 1.2 percent;
the balance being alumina.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115057691A (en) * | 2022-07-13 | 2022-09-16 | 江西省科兴特种陶瓷有限公司 | High-alumina honeycomb ceramic material resistant to corrosion of low-concentration hydrofluoric acid and preparation method thereof |
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