GB1326730A - Silicon nitride - Google Patents

Silicon nitride

Info

Publication number
GB1326730A
GB1326730A GB1326730DA GB1326730A GB 1326730 A GB1326730 A GB 1326730A GB 1326730D A GB1326730D A GB 1326730DA GB 1326730 A GB1326730 A GB 1326730A
Authority
GB
United Kingdom
Prior art keywords
nitride
coated
prepared
calcining
decomposing
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
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.)
UK Atomic Energy Authority
Original Assignee
UK Atomic Energy Authority
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 UK Atomic Energy Authority filed Critical UK Atomic Energy Authority
Publication of GB1326730A publication Critical patent/GB1326730A/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
    • C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/009—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone characterised by the material treated
    • 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
    • C04B35/584—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 silicon nitride
    • 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

Landscapes

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

Abstract

1326730 Surface coated Si 3 N 4 UNITED KINGDOM ATOMIC ENERGY AUTHORITY 21 Aug 1970 [22 Aug 1969] 41889/69 Heading B2E [Also in Division C1] Si 3 N 4 coated with a surface layer of Al 2 O 3 is prepared by either decomposing an aluminium compound, e.g. Al(NO 3 ) 3 , or hydrolysing Al 2 Cl 6 , on the surface of the nitride. The nitride may be additionally coated with B 2 O 3 which may be prepared by decomposing a boron compound, e.g. H 3 BO 3 on the surface of the nitride. The oxides may be present in an amount between 0.1-10% by wt. of the nitride. The coated nitride is preferably prepared by immersing the nitride in Al(NO 3 ) 3 solution, drying and calcining at 850‹C. The Al 2 O 3 -B 2 O 3 layer may be prepared by subsequently immersing the Al 3 O 3 coated nitride in H 2 BO 3 , drying and then calcining at 850‹C.
GB1326730D 1969-08-22 1969-08-22 Silicon nitride Expired GB1326730A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4188969 1969-08-22

Publications (1)

Publication Number Publication Date
GB1326730A true GB1326730A (en) 1973-08-15

Family

ID=10421820

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1326730D Expired GB1326730A (en) 1969-08-22 1969-08-22 Silicon nitride

Country Status (5)

Country Link
CA (1) CA937467A (en)
CH (1) CH547240A (en)
DE (1) DE2041587A1 (en)
FR (1) FR2059082A5 (en)
GB (1) GB1326730A (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2211421A1 (en) * 1972-12-04 1974-07-19 Advanced Materials Eng Reducing porosity of silicon nitride - by introducing liquids contg refractory heating to ppte refractory oxide to fill pores
US4038092A (en) * 1976-01-30 1977-07-26 Norton Company Strengthening reaction sintered silicon nitride
DE2737266C2 (en) * 1977-08-18 1987-08-20 MTU Motoren- und Turbinen-Union München GmbH, 8000 München Process for encapsulating a molded body made of silicon ceramic for hot isostatic pressing
DE2737267C2 (en) * 1977-08-18 1983-04-14 MTU Motoren- und Turbinen-Union München GmbH, 8000 München Process for hot isostatic pressing (HIP) of ceramic components
FR2445747A1 (en) * 1979-01-05 1980-08-01 Armines PROCESS FOR MANUFACTURING NITRIDE SILICON PARTS
DE2940629A1 (en) * 1979-10-06 1981-04-16 Daimler-Benz Ag, 7000 Stuttgart METHOD FOR PRODUCING OXIDATION-RESISTANT SILICON NITRIDE SINTER BODIES WITH IMPROVED MECHANICAL STRENGTH

Also Published As

Publication number Publication date
DE2041587A1 (en) 1971-03-04
FR2059082A5 (en) 1971-05-28
CA937467A (en) 1973-11-27
CH547240A (en) 1974-03-29

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees