SU674664A3 - Charge for making heat- and electroconductive ceramic material - Google Patents

Charge for making heat- and electroconductive ceramic material

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Publication number
SU674664A3
SU674664A3 SU742019074A SU2019074A SU674664A3 SU 674664 A3 SU674664 A3 SU 674664A3 SU 742019074 A SU742019074 A SU 742019074A SU 2019074 A SU2019074 A SU 2019074A SU 674664 A3 SU674664 A3 SU 674664A3
Authority
SU
USSR - Soviet Union
Prior art keywords
diboride
temperature
metal
disilicide
mixture
Prior art date
Application number
SU742019074A
Other languages
Russian (ru)
Inventor
Карбоннель Анри
Амон Людовик
Original Assignee
Групман Атомик Альзасьен Атлантик (Фирма)
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 Групман Атомик Альзасьен Атлантик (Фирма) filed Critical Групман Атомик Альзасьен Атлантик (Фирма)
Application granted granted Critical
Publication of SU674664A3 publication Critical patent/SU674664A3/en

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    • 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
    • C04B35/64—Burning or sintering processes
    • C04B35/645—Pressure sintering
    • 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
    • C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
    • C04B35/58—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on borides, nitrides, i.e. nitrides, oxynitrides, carbonitrides or oxycarbonitrides or silicides
    • C04B35/5805—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on borides, nitrides, i.e. nitrides, oxynitrides, carbonitrides or oxycarbonitrides or silicides based on borides
    • C04B35/58064—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on borides, nitrides, i.e. nitrides, oxynitrides, carbonitrides or oxycarbonitrides or silicides based on borides based on refractory borides
    • 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
    • C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
    • C04B35/58—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on borides, nitrides, i.e. nitrides, oxynitrides, carbonitrides or oxycarbonitrides or silicides
    • C04B35/5805—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on borides, nitrides, i.e. nitrides, oxynitrides, carbonitrides or oxycarbonitrides or silicides based on borides
    • C04B35/58064—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on borides, nitrides, i.e. nitrides, oxynitrides, carbonitrides or oxycarbonitrides or silicides based on borides based on refractory borides
    • C04B35/58071—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on borides, nitrides, i.e. nitrides, oxynitrides, carbonitrides or oxycarbonitrides or silicides based on borides based on refractory borides based on titanium borides
    • 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
    • C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
    • C04B35/58—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on borides, nitrides, i.e. nitrides, oxynitrides, carbonitrides or oxycarbonitrides or silicides
    • C04B35/5805—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on borides, nitrides, i.e. nitrides, oxynitrides, carbonitrides or oxycarbonitrides or silicides based on borides
    • C04B35/58064—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on borides, nitrides, i.e. nitrides, oxynitrides, carbonitrides or oxycarbonitrides or silicides based on borides based on refractory borides
    • C04B35/58078—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on borides, nitrides, i.e. nitrides, oxynitrides, carbonitrides or oxycarbonitrides or silicides based on borides based on refractory borides based on zirconium or hafnium borides
    • 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
    • C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
    • 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
    • C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
    • C04B38/02—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by adding chemical blowing agents

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Inorganic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Ceramic Products (AREA)
  • Conductive Materials (AREA)
  • Porous Artificial Stone Or Porous Ceramic Products (AREA)
  • Compositions Of Oxide Ceramics (AREA)
  • Resistance Heating (AREA)

Claims (1)

подвергают кратковременной виброобра ботке в форме и спекают при температуре 1000-1500°С в атмосфере инертного газа. Добавление дисилицида металла в количестве до 25% повьЕвает температуру окислени  конечного продукта, а введение тонкой смеси диборида и дисилицида уменьшает удельное электрическое сопротивление керамического матери ёша. В качестве диборида может быть использован диборид титана, циркони , гафни  или вольфрама (и дисилициды тех же элементов). Введение вторидов способствует снижению температуры спекани  материала. Пример . Используют смесь тонких порс аков с размером частиц в несколько микрон, содержавшую 82% диборида титана и 15% дисилицида титан а . Эта смесь окисл етс  при темпера туре , тогда как сам по себе ди борид титана окисл етс  при температ ре . Фриттуют 60% смеси под давлением при температуре и получают очень плотный продукт почти не имеющий пор. После его измельчени  до размера частиц пор дка нескольких миллиметров его добавл ют к оставшимс  40% смеси тонких порошков, ввод т туда 3% фторида лити , подвер гают виброобработке в форме. Материал, полученный после спекани  при температуре в течени двух часов, имеет пористость около 40%, чтозначительно повышает его стойкость к тепловым ударам. Материал хорс ло проводит электрический ток, химически пассивен в присутствии жидкого.металла, окисл етс  лишь при очень высоких температурах. Формула изобретени  Шихта дл  изготовлени  тепло-и электропроводного керамического материала , включающа  диборид и дисилицид металла IV-VI групп, отличающа с  тем, что, с целью повышени  стойкости материала к тепловым ударам, она содержит 20-40вес% диборида и дисилицида металла в виде тонкомолотого порошка и 60-80% в виде предварительно спеченного зернистого наполнител , а дополнительно содержит фторид щелочного или щелочноземельного элемента при следующем соотношении компонентов, вес.% Ди силицид металла 1V-VI групп10-25 Фторид Щелочного или щелочноземельного элемента1-6 Диборид металла IV-VI груйп Остальное. Источники информации, прин тые во внимание при экспертизе 1. Справочник Огнеупорное производство под редакцией Д.И. Гавриша, М., 1965, с. 495.subjected to short-term vibration treatment in the form and sintered at a temperature of 1000-1500 ° C in an atmosphere of inert gas. Adding metal disilicide in an amount up to 25% increases the oxidation temperature of the final product, and the introduction of a fine mixture of diboride and disilicide reduces the electrical resistivity of the ceramic material of your yosh. Titanium, zirconium, hafnium or tungsten diboride (and disilicides of the same elements) can be used as diboride. The introduction of the secondary helps to reduce the sintering temperature of the material. An example. A mixture of fine porous akas with a particle size of several microns, containing 82% titanium diboride and 15% titanium disilicide, is used. This mixture is oxidized at a temperature, while titanium diboride itself is oxidized at a temperature. 60% of the mixture is fritted under pressure at a temperature and a very dense product is obtained which has almost no pores. After grinding to a particle size of the order of a few millimeters, it is added to the remaining 40% of the mixture of fine powders, 3% lithium fluoride is added thereto, and vibrated in the form. The material obtained after sintering at a temperature of two hours has a porosity of about 40%, which greatly increases its resistance to thermal shocks. The horse material conducts electrical current, is chemically passive in the presence of a liquid metal, is oxidized only at very high temperatures. Claims for the manufacture of heat and electrically conductive ceramic material, including diboride and disilicide of metal of groups IV-VI, characterized in that, in order to increase the resistance of the material to thermal shock, it contains 20-40% of diboride and disilicide of metal in the form of fine ground powder and 60-80% in the form of a pre-sintered granular filler, and additionally contains alkali or alkaline earth fluoride in the following ratio of components, wt.% Di silicide metal 1V-VI groups 10-25 Alkali fluoride or alkaline earth element1-6 metal diboride IV-VI grüp Else. Sources of information taken into account in the examination 1. Handbook Refractories, edited by D.I. Gavrish, M., 1965, p. 495.
SU742019074A 1971-12-22 1974-04-25 Charge for making heat- and electroconductive ceramic material SU674664A3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7146212A FR2186960A5 (en) 1971-12-22 1971-12-22

Publications (1)

Publication Number Publication Date
SU674664A3 true SU674664A3 (en) 1979-07-15

Family

ID=9087904

Family Applications (2)

Application Number Title Priority Date Filing Date
SU7201872555A SU571180A3 (en) 1971-12-22 1972-12-22 Method of obtaining sintered diboride-based of porous materials
SU742019074A SU674664A3 (en) 1971-12-22 1974-04-25 Charge for making heat- and electroconductive ceramic material

Family Applications Before (1)

Application Number Title Priority Date Filing Date
SU7201872555A SU571180A3 (en) 1971-12-22 1972-12-22 Method of obtaining sintered diboride-based of porous materials

Country Status (11)

Country Link
JP (3) JPS5549032B2 (en)
AU (1) AU466721B2 (en)
CA (1) CA1023139A (en)
CH (1) CH574374A5 (en)
DE (1) DE2261523A1 (en)
FR (1) FR2186960A5 (en)
GB (1) GB1414178A (en)
IT (1) IT972582B (en)
NO (1) NO133193C (en)
SE (1) SE375754B (en)
SU (2) SU571180A3 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2262437B1 (en) * 1974-02-21 1983-06-24 Activite Atom Avance
JPS59184611U (en) * 1983-05-27 1984-12-08 日立工機株式会社 Electric cutter dust suction device
JPS6342801A (en) * 1986-08-08 1988-02-24 日立工機株式会社 Portable dust-collecting circular saw

Also Published As

Publication number Publication date
SE375754B (en) 1975-04-28
NO133193C (en) 1976-03-24
FR2186960A5 (en) 1974-01-11
JPS5542583B2 (en) 1980-10-31
SU571180A3 (en) 1977-08-30
JPS4870894A (en) 1973-09-26
CH574374A5 (en) 1976-04-15
AU5030172A (en) 1974-06-20
JPS5549032B2 (en) 1980-12-09
JPS4870904A (en) 1973-09-26
NO133193B (en) 1975-12-15
AU466721B2 (en) 1974-06-20
JPS4870905A (en) 1973-09-26
GB1414178A (en) 1975-11-19
DE2261523A1 (en) 1973-06-28
IT972582B (en) 1974-05-31
CA1023139A (en) 1977-12-27

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