SU1323549A1 - Protective coating on ceramics - Google Patents
Protective coating on ceramics Download PDFInfo
- Publication number
- SU1323549A1 SU1323549A1 SU863999603A SU3999603A SU1323549A1 SU 1323549 A1 SU1323549 A1 SU 1323549A1 SU 863999603 A SU863999603 A SU 863999603A SU 3999603 A SU3999603 A SU 3999603A SU 1323549 A1 SU1323549 A1 SU 1323549A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- ceramics
- alloys
- protective coating
- aluminum
- coating
- Prior art date
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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
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/50—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials
- C04B41/5025—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials with ceramic materials
- C04B41/5031—Alumina
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Compositions Of Oxide Ceramics (AREA)
Abstract
Изобретение относитс к области литейного производства, а именно к составу защитного покрыти по керамике , примен емой дл изготовлени тиглей , предназначенных дл плавки алюмини и его сплавов. Целью изобретени вл етс увеличение коррозионной стойкости против жидкого алюмини и его сплавов. Защитное покрытие по керамике включает алюмомагнезиальную шпинель 90-95 мае.% и тугоплавкое алюмосиликофосфатное стекло 5-10 мае.% следующего состава, Mac.%:Si02 10,2- 35,6; PjOy 53,5-72,4; Al Од остальное . Покрытие обеспечивает заищту керамики от разрушающего воздействи алюмини и его сплавов. 1 табл. (ЛThe invention relates to the field of foundry, in particular, to the composition of a protective coating on ceramics used for the manufacture of crucibles used for melting aluminum and its alloys. The aim of the invention is to increase the corrosion resistance of liquid aluminum and its alloys. The protective coating on ceramics includes alumo-magnesian spinel 90-95 May.% And refractory aluminosilicophosphate glass 5-10 may.% Of the following composition, Mac.%: Si02 10.2- 35.6; PjOy 53.5-72.4; Al od the rest. The coating ensures the protection of ceramics from the damaging effects of aluminum and its alloys. 1 tab. (L
Description
Изобретение относитс к литейному производству, а именно к составу защитного покрыти по керамике, примен емой дл изготовлени тиглей, предназначенных дл плавки алюмини и его сплавов.The invention relates to a foundry, in particular, to the composition of a protective coating on ceramics used for the manufacture of crucibles used for melting aluminum and its alloys.
Целью изобретени вл етс увеличение коррозионной стойкости против жидкого алюмини и его сплавов.The aim of the invention is to increase the corrosion resistance of liquid aluminum and its alloys.
Синтез состава алюмосиликофосфат- ного стекла (исходные реактивы SiO, AljOj и марки ч) проводилс при в силитовой печи с карборундовыми нагревател ми в течение 1ч.The synthesis of the aluminosilicophosphate glass (initial SiO, AljOj reagents and grade h) was carried out at a silicate furnace with carborundum heaters for 1 hour.
Синтез смеси алюмомагнезиальной шпинели марки ч и стекла дл получени исходного состава покрыти проводилс при 900°С в течение 1 ч. Таким образом, синтезированный состав размальюапс сухик способом без мельничных добавок и пропускалс через сито № 0056. Полученный порошок использовалс дл плазменного напылени .Synthesis of a mixture of alumo magnesian spinel brand h and glass to obtain the initial coating composition was carried out at 900 ° C for 1 hour. Thus, the synthesized milled powder composition was made without mill additives and passed through a No. 0056 sieve. The resulting powder was used for plasma spraying.
Покрытие толщиной до 1 мм нанос т на керамику, полученную прессованием электрокорунда фракций № 50 (50%) и № 8-10 (20%) и вибромолотого глинозема (30%) . После перемешивани и увлажнени сульфитоспиртовой бардой материал прессуют при 1000кг/см сушат в течение суток при 150 С и обжигают при 1750 С в течение 6 ч, Полученна керамика имеет открытую пористость 20,51%, кажущуюс штот- ность 3,14 г/см .A coating up to 1 mm thick is applied to the ceramics obtained by pressing the electrocorundum fractions No. 50 (50%) and No. 8-10 (20%) and vibro-alumina (30%). After mixing and moistening, the sulphite – alcohol bardy material is pressed at 1000 kg / cm and dried for 150 hours at 150 ° C and burned at 1750 ° C for 6 hours. The resulting ceramics have an open porosity of 20.51%, an apparent content of 3.14 g / cm.
Состав и свойства защитного по- крыти представлены в таблице.The composition and properties of the protective coating are presented in the table.
О ABOUT
0 0
О 5 About 5
5five
Указанные свойства сохран ютс после термоциКлировани и после повторного синтеза покрыти .These properties are retained after thermal acylation and after re-synthesis of the coating.
Предлагаемое защитное покрытие предназначено дл защиты керамики от разрушающего воздействи алюмини и сплавов. Совокупность свойств . защитного покрыти обеспечивает .более длительную службу керамики, наход щейс в контакте с жидким алюминием .The proposed protective coating is intended to protect ceramics from the damaging effects of aluminum and alloys. The set of properties. The protective coating provides a longer service life for ceramics in contact with liquid aluminum.
Таким образом, предлагаемое покрытие пригодное дл защиты керамических тиглей дл плавки алюмини и его сплавов может увеличить срок службы в среднем в три раза по сравнению с прототипом.Thus, the proposed coating suitable for the protection of ceramic crucibles for melting aluminum and its alloys can increase the service life by an average of three times as compared with the prototype.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU863999603A SU1323549A1 (en) | 1986-01-02 | 1986-01-02 | Protective coating on ceramics |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU863999603A SU1323549A1 (en) | 1986-01-02 | 1986-01-02 | Protective coating on ceramics |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU1323549A1 true SU1323549A1 (en) | 1987-07-15 |
Family
ID=21213505
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU863999603A SU1323549A1 (en) | 1986-01-02 | 1986-01-02 | Protective coating on ceramics |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU1323549A1 (en) |
-
1986
- 1986-01-02 SU SU863999603A patent/SU1323549A1/en active
Non-Patent Citations (1)
| Title |
|---|
| Авторское свидетельство СССР № 1073225, кл. С 04 В 35/44, 1982. Патент FR № 2400494, кл. С 04 В 35/68, 1979. * |
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