GB815469A - Improvements in or relating to processes for the production of shaped articles - Google Patents

Improvements in or relating to processes for the production of shaped articles

Info

Publication number
GB815469A
GB815469A GB19175/55A GB1917555A GB815469A GB 815469 A GB815469 A GB 815469A GB 19175/55 A GB19175/55 A GB 19175/55A GB 1917555 A GB1917555 A GB 1917555A GB 815469 A GB815469 A GB 815469A
Authority
GB
United Kingdom
Prior art keywords
silica
oxidizing atmosphere
sintering
relating
processes
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.)
Expired
Application number
GB19175/55A
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.)
Siemens Plania Werke AG
Original Assignee
Siemens Plania Werke AG
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 Siemens Plania Werke AG filed Critical Siemens Plania Werke AG
Publication of GB815469A publication Critical patent/GB815469A/en
Expired legal-status Critical Current

Links

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
    • 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
    • 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
    • C04B35/58085—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 silicides
    • C04B35/58092—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 silicides based on refractory metal silicides

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Ceramic Products (AREA)

Abstract

Refractory articles are obtained by shaping a paste of electrically conductive silicides and/or borides of Group IV to VI metals with a liquid hydrolysable silicic acid ester or a solution of such an ester, hydrolysing, drying and sintering. Pre-sintering may be carried out in a non-oxidizing atmosphere at not above 1450 DEG C. Final sintering is either completely in a non-oxidizing atmosphere or partly in an oxidizing atmosphere, the temperature in either case being between 1500 DEG and 1800 DEG C. The article has a coating of a continuous skeleton of silica, the silica being 0,5-20 per cent by weight. Optional additions are silicon carbide or one or more of thoria, ceria, zirconia, alumina, beryllia, magnesia, silica and chromium oxide.
GB19175/55A 1954-07-01 1955-07-01 Improvements in or relating to processes for the production of shaped articles Expired GB815469A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT371154A AT217721B (en) 1954-07-01 1954-07-01 Process for the production of sintered bodies and sintered bodies produced therefrom

Publications (1)

Publication Number Publication Date
GB815469A true GB815469A (en) 1959-06-24

Family

ID=3554333

Family Applications (1)

Application Number Title Priority Date Filing Date
GB19175/55A Expired GB815469A (en) 1954-07-01 1955-07-01 Improvements in or relating to processes for the production of shaped articles

Country Status (2)

Country Link
AT (1) AT217721B (en)
GB (1) GB815469A (en)

Also Published As

Publication number Publication date
AT217721B (en) 1961-10-25

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