GB612519A - Improvements in or relating to the manufacture of silica articles or articles formed in part of silica - Google Patents

Improvements in or relating to the manufacture of silica articles or articles formed in part of silica

Info

Publication number
GB612519A
GB612519A GB28281/45A GB2828145A GB612519A GB 612519 A GB612519 A GB 612519A GB 28281/45 A GB28281/45 A GB 28281/45A GB 2828145 A GB2828145 A GB 2828145A GB 612519 A GB612519 A GB 612519A
Authority
GB
United Kingdom
Prior art keywords
silica
mould
coating
silicon
hydrolysed
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
GB28281/45A
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 GB28281/45A priority Critical patent/GB612519A/en
Publication of GB612519A publication Critical patent/GB612519A/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
    • C04B35/01—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
    • C04B35/14—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 silica
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C3/00—Selection of compositions for coating the surfaces of moulds, cores, or patterns
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C24/00—Coating starting from inorganic powder

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Ceramic Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Metallurgy (AREA)
  • Manufacturing & Machinery (AREA)
  • Structural Engineering (AREA)
  • Surface Treatment Of Glass (AREA)

Abstract

In making a silica article, a shaped mould is coated with silicon tetrachloride or a silicon ester, e.g. ethyl-ortho-silicate, and the coating hydrolysed in the presence of the vapour of hydrochloric acid, nitric acid or ammonia to form a layer of silica, the mould being subsequently removed. Successive films of the silicon compound may be applied, continuously if desired, to the mould, each film being hydrolysed before a further film is applied. The method may be applied to form a seal between an insert, such as a metal lead or support wire, and a glass or vitreous part, by coating the insert with silica, introducing the coated insert into an aperture in the vitreous part and coating the parts with silica.ALSO:In making a silica article, a shaped mould is coated with silicon tetrachloride or a silicon ester e.g. ethyl ortho-silicate, and the coating hydrolysed in the presence of the vapour of hydrochloric acid, nitric acid or ammonia to form a layer of silica, the mould being subsequently removed. Successive films of the silicon compound may be applied, continuously if desired, to the mould, each film being hydrolysed before a further film is applied. The mould, which may be made of wax or metal, may be mounted on a rotatable shaft with the lower part of the mould immersed in the silicon compound whilst the upper part is exposed in air to the reacting vapour.
GB28281/45A 1945-10-26 1945-10-26 Improvements in or relating to the manufacture of silica articles or articles formed in part of silica Expired GB612519A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB28281/45A GB612519A (en) 1945-10-26 1945-10-26 Improvements in or relating to the manufacture of silica articles or articles formed in part of silica

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB28281/45A GB612519A (en) 1945-10-26 1945-10-26 Improvements in or relating to the manufacture of silica articles or articles formed in part of silica

Publications (1)

Publication Number Publication Date
GB612519A true GB612519A (en) 1948-11-15

Family

ID=10273163

Family Applications (1)

Application Number Title Priority Date Filing Date
GB28281/45A Expired GB612519A (en) 1945-10-26 1945-10-26 Improvements in or relating to the manufacture of silica articles or articles formed in part of silica

Country Status (1)

Country Link
GB (1) GB612519A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4023597A (en) * 1973-12-20 1977-05-17 Tioxide Group Limited Distributors

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4023597A (en) * 1973-12-20 1977-05-17 Tioxide Group Limited Distributors

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