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A platform for research: civil engineering, architecture and urbanism
Способ изготовления керамики на основе карбида кремния, армированного волокнами карбида кремния
FIELD: chemistry.SUBSTANCE: invention relates to a method of producing ceramic composite from silicon carbide reinforced with silicon carbide fibre, which can be used for operation in acidic and aggressive media, in conditions of high temperatures and prolonged mechanical action. Method of producing ceramics involves mixing silicon carbide powder containing sintering additive in form of aluminium and yttrium oxides with silicone carbide fibres obtained by siliconisation. Dried mixture was added 3 wt. % of 10 % solution of polyvinylpyrrolidone is moulded preform bilateral cold uniaxial pressing, followed by sintering by hot pressing at 1850 °C with a maximum specific pressure of 30 MPa.EFFECT: method allows to obtain densely sintered ceramic materials having strength up to 524 MPa, a fracture toughness K= 6,1 MPa⋅m.1 cl, 2 ex, 1 tbl, 2 dwg
Способ изготовления керамики на основе карбида кремния, армированного волокнами карбида кремния
FIELD: chemistry.SUBSTANCE: invention relates to a method of producing ceramic composite from silicon carbide reinforced with silicon carbide fibre, which can be used for operation in acidic and aggressive media, in conditions of high temperatures and prolonged mechanical action. Method of producing ceramics involves mixing silicon carbide powder containing sintering additive in form of aluminium and yttrium oxides with silicone carbide fibres obtained by siliconisation. Dried mixture was added 3 wt. % of 10 % solution of polyvinylpyrrolidone is moulded preform bilateral cold uniaxial pressing, followed by sintering by hot pressing at 1850 °C with a maximum specific pressure of 30 MPa.EFFECT: method allows to obtain densely sintered ceramic materials having strength up to 524 MPa, a fracture toughness K= 6,1 MPa⋅m.1 cl, 2 ex, 1 tbl, 2 dwg
Способ изготовления керамики на основе карбида кремния, армированного волокнами карбида кремния
2020-03-12
Patent
Electronic Resource
Russian
IPC:
C04B
Kalk
,
LIME
КЕРАМИЧЕСКИЙ НАНОСТРУКТУРИРОВАННЫЙ МАТЕРИАЛ НА ОСНОВЕ НИТРИДА КРЕМНИЯ И СПОСОБ ЕГО ПОЛУЧЕНИЯ
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