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Method for preparing iron-containing SiCN ceramic by using precursor conversion method
The invention relates to a method for preparing iron-containing SiCN ceramic by using a precursor conversion method, and the method comprises the following steps: (1) uniformly mixing polysilazane, alpha-methacrylic acid and dicumyl peroxide, and obtaining a mixed solution; (2) solidifying the mixed solution; (3) carrying out crushing and ball milling of the solidified materials; (4) uniformly mixing the powder which is processed through ball milling and nanometer iron oxide; (5) carrying out prepressing and molding of the obtained powder, and obtaining a green compact; (6) carrying out pyrolysis/sintering and heat preservation of the green compact obtained in the step (5) at 1000-1400 DEG C; obtaining the product. The iron-containing SiCN ceramic prepared by the precursor conversion method has the advantages of simple preparation technology and excellent high temperature performance; the dielectric constant value is obviously increased by introducing nanometer iron oxide, and the dielectric loss is correspondingly increased; the electromagnetic attenuation coefficient of the ceramic is increased, and the reflectivity is increased.
Method for preparing iron-containing SiCN ceramic by using precursor conversion method
The invention relates to a method for preparing iron-containing SiCN ceramic by using a precursor conversion method, and the method comprises the following steps: (1) uniformly mixing polysilazane, alpha-methacrylic acid and dicumyl peroxide, and obtaining a mixed solution; (2) solidifying the mixed solution; (3) carrying out crushing and ball milling of the solidified materials; (4) uniformly mixing the powder which is processed through ball milling and nanometer iron oxide; (5) carrying out prepressing and molding of the obtained powder, and obtaining a green compact; (6) carrying out pyrolysis/sintering and heat preservation of the green compact obtained in the step (5) at 1000-1400 DEG C; obtaining the product. The iron-containing SiCN ceramic prepared by the precursor conversion method has the advantages of simple preparation technology and excellent high temperature performance; the dielectric constant value is obviously increased by introducing nanometer iron oxide, and the dielectric loss is correspondingly increased; the electromagnetic attenuation coefficient of the ceramic is increased, and the reflectivity is increased.
Method for preparing iron-containing SiCN ceramic by using precursor conversion method
GONG HONGYU (Autor:in) / FENG YURUN (Autor:in) / ZHANG YUJUN (Autor:in) / WANG XIANLI (Autor:in) / GUO XUE (Autor:in) / ZHAO YUJUN (Autor:in)
28.10.2015
Patent
Elektronische Ressource
Englisch
IPC:
C04B
Kalk
,
LIME
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