CN108588823A - A kind of preparation method of the quartzy coating of efficient barrier impurity diffusion - Google Patents
A kind of preparation method of the quartzy coating of efficient barrier impurity diffusion Download PDFInfo
- Publication number
- CN108588823A CN108588823A CN201810354756.4A CN201810354756A CN108588823A CN 108588823 A CN108588823 A CN 108588823A CN 201810354756 A CN201810354756 A CN 201810354756A CN 108588823 A CN108588823 A CN 108588823A
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- China
- Prior art keywords
- slurry
- coating
- quartz
- preparation
- impurity diffusion
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Classifications
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- C—CHEMISTRY; METALLURGY
- C30—CRYSTAL GROWTH
- C30B—SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
- C30B28/00—Production of homogeneous polycrystalline material with defined structure
- C30B28/04—Production of homogeneous polycrystalline material with defined structure from liquids
- C30B28/06—Production of homogeneous polycrystalline material with defined structure from liquids by normal freezing or freezing under temperature gradient
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D1/00—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/65—Additives macromolecular
-
- C—CHEMISTRY; METALLURGY
- C30—CRYSTAL GROWTH
- C30B—SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
- C30B29/00—Single crystals or homogeneous polycrystalline material with defined structure characterised by the material or by their shape
- C30B29/02—Elements
- C30B29/06—Silicon
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Crystallography & Structural Chemistry (AREA)
- Metallurgy (AREA)
- Inorganic Chemistry (AREA)
- Glass Melting And Manufacturing (AREA)
- Paints Or Removers (AREA)
Abstract
The invention discloses a kind of preparation methods of the quartzy coating of efficient barrier impurity diffusion, comprise the steps of：Step 1：Quartz sand and deionized water are divided 3 times or 3 times or more by certain time interval is added grinding machine progress wet grinding, obtains slurry；Step 2：Tekite sand aggregate, water base Ludox, organic binder and inorganic additive are sequentially added in slurry and be uniformly mixed, the inorganic additive is alumina silicate, a kind of in zirconium silicate and yttrium oxide or it arbitrary is combined.By adding auxiliary agent, can between other object phases activeness and quietness, while promoting compactness between coating granule, the high purity quartz coating of preparation is notable to impurity barriering effect.
Description
Technical field
The present invention relates to the preparation field of quartzy coating more particularly to a kind of quartzy coatings of efficient barrier impurity diffusion
Preparation method.
Background technology
The silica crucible that polycrystalline silicon ingot casting production uses, due to the introducing of impurity during material purity is low and production process,
Cause silicon ingot edge minority carrier lifetime obviously relatively low, or even influence whether the service efficiency of silicon chip, this crucible is produced and is looked forward to
Industry can coat the high purity quartz coating of one layer of 99.999% or more purity before crucible dispatches from the factory in inner surface of crucible, to reduce impurity
The influence of diffusion couple ingot casting.Although the way has certain effect, but with the raising that client requires ingot casting total quality, commonly
Quartzy coating can no longer meet requirement.
Invention content
Technical problem underlying to be solved by this invention：The quartzy coating of barrier impurity diffusion is prepared, ingot casting edge is shortened
Red sector（Low minority carrier life time area）, improve the quality of ingot casting.
For achieving the above object, the present invention provides a kind of preparations for the quartzy coating that can efficiently obstruct impurity diffusion
Method, by adding inorganic assistant, can between other object phases activeness and quietness, while promoting compactness between coating granule,
The high purity quartz coating of preparation is notable to impurity barriering effect, the red sector of ingot casting edge（Low minority carrier life time area）It is obviously shortened, very
To disappearance, it is integrally improved the quality of ingot casting.
A kind of preparation method of the quartzy coating of efficient barrier impurity diffusion, comprises the steps of：
Step 1, quartz sand and deionized water divide 3 times or 3 times or more addition grinding machines progress wet methods to grind by certain time interval
Mill, obtains slurry；Step 2 sequentially adds tekite sand aggregate, water base Ludox, organic binder and inorganic additive
It in slurry and is uniformly mixed, the inorganic additive is alumina silicate, a kind of in zirconium silicate and yttrium oxide or it arbitrary is combined.
A kind of preparation method of the quartzy coating of efficient barrier impurity diffusion, the total weight based on quartzy coating：Including 5%-
50% tekite sand aggregate, the aggregate size are 50-200 mesh；The slurry of 10%-50%, the slurry solid content is in 50%-
80%, D50=3.0 ± 2.0um；The water base Ludox of 5%-30%, the solid content of the water base Ludox is in 10%-30%；0.1%-
10% organic binder, the organic binder are a kind of in PVA, PVP and PAM or its arbitrary combination；The inorganic additions of 0.1%-5%
Agent.
Further, the quartz sand added that feeds for the first time when the wet grinding is crystalline state quartz or crystalline state quartz and melts
The mixture of fused silica, for the second time and the quartz of subsequent charge addition is vitreous silica.
The advantageous effects of the present invention：
Compared to conventional high purity quartz coating, the present invention can enhance increasing by adding inorganic assistant between other object phases
It is tough, while promoting compactness between coating granule.The quartzy coating of preparation has apparent advantage in barrier impurity diffusion no matter
It is the ingot casting of fine melt technique productions or the ingot casting of fritting technique productions, edge red sector reduces more than half, or even disappears completely
It loses.
Claims (3)
1. a kind of preparation method of the quartzy coating of efficient barrier impurity diffusion, which is characterized in that comprise the steps of：
Step 1：Quartz sand and deionized water divide 3 times or 3 times or more addition grinding machines progress wet methods to grind by certain time interval
Mill, obtains slurry；
Step 2：Tekite sand aggregate, water base Ludox, organic binder and inorganic additive are sequentially added in slurry simultaneously
It is uniformly mixed, the inorganic additive is alumina silicate, a kind of in zirconium silicate and yttrium oxide or it arbitrary is combined.
2. a kind of preparation method of the quartzy coating of efficient barrier impurity diffusion according to claim 1, which is characterized in that base
In the total weight of quartzy coating：Tekite sand aggregate including 5%-50%, the aggregate size are 50-200 mesh；10%-50%
Slurry, the slurry solid content is in 50%-80%, D50=3.0 ± 2.0um；The water base Ludox of 5%-30%, the water base silicon are molten
The solid content of glue is in 10%-30%；0.1%-10% organic binders, the organic binder is a kind of in PVA, PVP and PAM or it
Arbitrary combination；0.1%-5% inorganic additives.
3. the slurry that the wet grinding according to claim 1,2 obtains, which is characterized in that feed for the first time when wet grinding
The quartz sand of addition is the mixture of crystalline state quartz or crystalline state quartz and vitreous silica, the quartz that second and subsequent charge add
For vitreous silica.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810354756.4A CN108588823A (en) | 2018-04-19 | 2018-04-19 | A kind of preparation method of the quartzy coating of efficient barrier impurity diffusion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810354756.4A CN108588823A (en) | 2018-04-19 | 2018-04-19 | A kind of preparation method of the quartzy coating of efficient barrier impurity diffusion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108588823A true CN108588823A (en) | 2018-09-28 |
Family
ID=63611275
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810354756.4A Withdrawn CN108588823A (en) | 2018-04-19 | 2018-04-19 | A kind of preparation method of the quartzy coating of efficient barrier impurity diffusion |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108588823A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111589678A (en) * | 2020-05-29 | 2020-08-28 | 徐州协鑫太阳能材料有限公司 | Preparation method of compact quartz crucible high-purity coating |
| CN115058131A (en) * | 2022-07-01 | 2022-09-16 | 徐州协鑫太阳能材料有限公司 | Preparation method of coating for reducing red zone at bottom of ingot |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101508590A (en) * | 2009-03-20 | 2009-08-19 | 江西赛维Ldk太阳能高科技有限公司 | Crucible pot coating for polysilicon casting ingot and preparation method |
| CN101956230A (en) * | 2010-10-27 | 2011-01-26 | 杭州先进石英材料有限公司 | Quartz glass crucible and preparation method thereof |
| CN102527594A (en) * | 2012-01-22 | 2012-07-04 | 常熟华融太阳能新型材料有限公司 | Quartz crucible for ingot casting and manufacturing method thereof |
| CN102797042A (en) * | 2012-09-06 | 2012-11-28 | 张礼强 | Crucible for melting crystalline silicon, method for producing crucible and spray coating liquid |
| CN105133011A (en) * | 2015-09-01 | 2015-12-09 | 晶科能源有限公司 | Polycrystalline quartz crucible coating and preparation method thereof |
| CN105648528A (en) * | 2016-03-15 | 2016-06-08 | 常熟华融太阳能新型材料有限公司 | Novel high-purity quartz crucible and preparation method thereof |
-
2018
- 2018-04-19 CN CN201810354756.4A patent/CN108588823A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101508590A (en) * | 2009-03-20 | 2009-08-19 | 江西赛维Ldk太阳能高科技有限公司 | Crucible pot coating for polysilicon casting ingot and preparation method |
| CN101956230A (en) * | 2010-10-27 | 2011-01-26 | 杭州先进石英材料有限公司 | Quartz glass crucible and preparation method thereof |
| CN102527594A (en) * | 2012-01-22 | 2012-07-04 | 常熟华融太阳能新型材料有限公司 | Quartz crucible for ingot casting and manufacturing method thereof |
| CN102797042A (en) * | 2012-09-06 | 2012-11-28 | 张礼强 | Crucible for melting crystalline silicon, method for producing crucible and spray coating liquid |
| CN105133011A (en) * | 2015-09-01 | 2015-12-09 | 晶科能源有限公司 | Polycrystalline quartz crucible coating and preparation method thereof |
| CN105648528A (en) * | 2016-03-15 | 2016-06-08 | 常熟华融太阳能新型材料有限公司 | Novel high-purity quartz crucible and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111589678A (en) * | 2020-05-29 | 2020-08-28 | 徐州协鑫太阳能材料有限公司 | Preparation method of compact quartz crucible high-purity coating |
| CN115058131A (en) * | 2022-07-01 | 2022-09-16 | 徐州协鑫太阳能材料有限公司 | Preparation method of coating for reducing red zone at bottom of ingot |
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Application publication date: 20180928 |
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