GB1021053A - An improved heat resisting material and method for producing it - Google Patents

An improved heat resisting material and method for producing it

Info

Publication number
GB1021053A
GB1021053A GB3530661A GB3530661A GB1021053A GB 1021053 A GB1021053 A GB 1021053A GB 3530661 A GB3530661 A GB 3530661A GB 3530661 A GB3530661 A GB 3530661A GB 1021053 A GB1021053 A GB 1021053A
Authority
GB
United Kingdom
Prior art keywords
hrs
producing
improved heat
heat resisting
resisting material
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
GB3530661A
Inventor
Norman Lawrence Parr
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.)
National Research Development Corp UK
Original Assignee
National Research Development Corp UK
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 National Research Development Corp UK filed Critical National Research Development Corp UK
Priority to GB3530661A priority Critical patent/GB1021053A/en
Priority to US225120A priority patent/US3215547A/en
Publication of GB1021053A publication Critical patent/GB1021053A/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
    • C04B35/515—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
    • C04B35/591—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 obtained by reaction sintering

Landscapes

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

Abstract

A body of self-bonded silicon nitride containing a dispersion or surface layer of SiO2 is obtained by compacting Si powder, which may contain up to 10% by weight SiC particles, and firing on N2 or dissociated NH3 to partially nitride the Si, and then in an oxidizing atmosphere to convert the unreacted Si into SiO2. The firing schedule may be 16 hrs. at 1250 DEG C. then 4 hrs. at 1450 DEG C., or 16 hrs. at 1350 DEG C. in N2, followed by 100 hrs. at 1450 DEG C. in O2. The shaped Si body may be initially sintered in N2 at 1125 DEG C. for at least an hour, then machined to shape before firing,
GB3530661A 1961-02-01 1961-09-29 An improved heat resisting material and method for producing it Expired GB1021053A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB3530661A GB1021053A (en) 1961-09-29 1961-09-29 An improved heat resisting material and method for producing it
US225120A US3215547A (en) 1961-02-01 1962-09-20 Heat resisting material and method for making it

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3530661A GB1021053A (en) 1961-09-29 1961-09-29 An improved heat resisting material and method for producing it

Publications (1)

Publication Number Publication Date
GB1021053A true GB1021053A (en) 1966-02-23

Family

ID=10376224

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3530661A Expired GB1021053A (en) 1961-02-01 1961-09-29 An improved heat resisting material and method for producing it

Country Status (1)

Country Link
GB (1) GB1021053A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2445747A1 (en) * 1979-01-05 1980-08-01 Armines PROCESS FOR MANUFACTURING NITRIDE SILICON PARTS

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2445747A1 (en) * 1979-01-05 1980-08-01 Armines PROCESS FOR MANUFACTURING NITRIDE SILICON PARTS

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