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WO1999036373A1 - Materiau ceramique - Google Patents

Materiau ceramique Download PDF

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Publication number
WO1999036373A1
WO1999036373A1 PCT/IB1999/000023 IB9900023W WO9936373A1 WO 1999036373 A1 WO1999036373 A1 WO 1999036373A1 IB 9900023 W IB9900023 W IB 9900023W WO 9936373 A1 WO9936373 A1 WO 9936373A1
Authority
WO
WIPO (PCT)
Prior art keywords
ceramic material
radiation
oxide
microns
mgo
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.)
Ceased
Application number
PCT/IB1999/000023
Other languages
English (en)
Inventor
Rustam Rakhimov
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to AU16798/99A priority Critical patent/AU1679899A/en
Publication of WO1999036373A1 publication Critical patent/WO1999036373A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/10—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor
    • H05B3/12—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material
    • H05B3/14—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material the material being non-metallic
    • H05B3/141—Conductive ceramics, e.g. metal oxides, metal carbides, barium titanate, ferrites, zirconia, vitrous compounds
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C10/00—Devitrified glass ceramics, i.e. glass ceramics having a crystalline phase dispersed in a glassy phase and constituting at least 50% by weight of the total composition
    • C03C10/0054—Devitrified glass ceramics, i.e. glass ceramics having a crystalline phase dispersed in a glassy phase and constituting at least 50% by weight of the total composition containing PbO, SnO2, B2O3
    • 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
    • C04B35/16—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 silicates other than clay
    • C04B35/18—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 silicates other than clay rich in aluminium oxide
    • C04B35/195—Alkaline earth aluminosilicates, e.g. cordierite or anorthite

Definitions

  • the present invention relates to the field of ceramic materials capable of generating infrared (LR) radiation with specified wavelengths. More particularly, it relates to ceramic materials with enhanced thermal, chemical and physical stability which can be used in highly efficient heaters and emitters for various applications in such areas as: medicine, for treating diseases; the food industry, for processing and preparing foodstuffs; in the light industry (textiles); and in manufacturing lining mate- rials.
  • LR infrared
  • This composition is used as a converting material to obtain IR radiation with stable properties.
  • the above ceramic material absorbs either pulse IR radiation from another ceramic material capable of generating only pulse IR radiation, or radiation from lamps, heating coils, etc, and generates continuous IR radiation at a wave- length of 16 microns ( ⁇ ).
  • a shortcoming of the material is that it is impossible to obtain stable IR radiation with a wavelength within 9-10 microns ( ⁇ ).
  • the object of the proposed invention is to create a ceramic material with controlled properties capable of generating stable secondary IR radiation with a wavelength within 9-10 microns ( ⁇ ).
  • the goal is achieved by supplementing a material containing silicon dioxide SiO 2 , aluminium oxide Al 2 O 3 , and magnesium oxide MgO by boron oxide B 2 O 3 , in the following proportions of ingredients, wt%: silicon dioxide SiO 2 50.0-55.0 aluminium oxide Al 2 O 3 27.0-31.0 magnesium oxide MgO 12.0-16.0 boron oxide B 2 O 3 2.0 - 7.0
  • the proposed ceramic material is prepared following conventional procedure.
  • the ingredients are ground in a planetary mill using Plexiglas drums and Teflon balls until a fine powder is obtained. After being dried, the powder is put in a crucible of a solar furnace, where it is melted. The melting is usually done in conditions reducing the loss of the oxygen from the obtained powder, preferably in oxi- dative atmospheres, best of all in air. Generally, these ceramic compositions on the basis of silicon dioxide are melted at a temperature of about 1,900°C. The melt drips into a cooling tank filled with water. Thus is the proposed ceramic material • obtained.
  • the obtained body is ground, pressed into an item of the desired shape, and sintered at a temperature of 1,600°C.
  • the obtained body is ground, mixed with a binder based on polyvinyl alcohol or soluble glass, and applied to the surface of the heating elements that are the source of primary IR radiation, or that of other articles to be used as sources of secondary IR radiation.
  • a charge was prepared of the following composition, wt%: silicon oxide SiO 2 50.0 aluminium oxide Al 2 O 3 29.0 magnesium oxide MgO 14.0 boron oxide B 2 O 3 7.0
  • the charge was then mixed in a planetary mill using Plexiglas drums and Teflon balls until a fine powder was obtained.
  • the powder was put in a crucible of a solar furnace and melted at 1,900°C in air. The melt was dripped into a cooling tank filled with water. Thus was the ceramic material obtained.
  • Example 2 has the optimum composition which ensures the desired properties of IR radiation within 9-10 microns ( ⁇ ).

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Structural Engineering (AREA)
  • Compositions Of Oxide Ceramics (AREA)

Abstract

Cette invention se rapporte à des matériaux céramique capables de produire un rayonnement infrarouge avec des longueurs d'ondes spécifiées. Cette invention vise à produire un matériau céramique ayant des propriétés contrôlées, qui est capable de produire un rayonnement infrarouge secondaire stable avec une longueur d'ondes comprise entre 9 et 10 microns (ν). Pour atteindre cet objectif, on prévoit que ce matériau céramique soit préparé à partir des ingrédients suivants, en pour cent en poids: du dioxyde de silicium (SiO2) 50,0 à 55,0 %; de l'oxyde d'aluminium (Al2O3) 27,0 à 31,0 %; de l'oxyde de magnésium (MgO) 12,0 à 16,0 %; et de l'oxyde de bore (B2O3) 2,0 à 7,0 %.
PCT/IB1999/000023 1998-01-20 1999-01-11 Materiau ceramique Ceased WO1999036373A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU16798/99A AU1679899A (en) 1998-01-20 1999-01-11 Ceramic material

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
UZIHDP9800040.1 1998-01-20
UZ9800040 1998-01-20

Publications (1)

Publication Number Publication Date
WO1999036373A1 true WO1999036373A1 (fr) 1999-07-22

Family

ID=25546923

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB1999/000023 Ceased WO1999036373A1 (fr) 1998-01-20 1999-01-11 Materiau ceramique

Country Status (2)

Country Link
AU (1) AU1679899A (fr)
WO (1) WO1999036373A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1329431A1 (fr) * 2002-01-21 2003-07-23 Sang-Ho Son Matériau émettant les rayonnements infrarouges et méthode pour la fabrication de ce materiau
KR100543886B1 (ko) * 2005-05-27 2006-01-23 반석제로파 주식회사 원적외선을 방사하는 세라믹 과립형 분체 및 이를 이용한 고밀도 물리치료석 제조방법
RU2397196C2 (ru) * 2008-04-09 2010-08-20 Институт электрофизики Уральского отделения Российской академии наук Способ получения композиционного керамического материала (варианты)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0168189A2 (fr) * 1984-07-02 1986-01-15 Corning Glass Works Vitrocéramique transparente à base de mullite
US4897509A (en) * 1987-04-27 1990-01-30 Corning Incorporated Glass-ceramics for electronic packaging

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0168189A2 (fr) * 1984-07-02 1986-01-15 Corning Glass Works Vitrocéramique transparente à base de mullite
US4897509A (en) * 1987-04-27 1990-01-30 Corning Incorporated Glass-ceramics for electronic packaging

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1329431A1 (fr) * 2002-01-21 2003-07-23 Sang-Ho Son Matériau émettant les rayonnements infrarouges et méthode pour la fabrication de ce materiau
KR100543886B1 (ko) * 2005-05-27 2006-01-23 반석제로파 주식회사 원적외선을 방사하는 세라믹 과립형 분체 및 이를 이용한 고밀도 물리치료석 제조방법
RU2397196C2 (ru) * 2008-04-09 2010-08-20 Институт электрофизики Уральского отделения Российской академии наук Способ получения композиционного керамического материала (варианты)

Also Published As

Publication number Publication date
AU1679899A (en) 1999-08-02

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