탄화규소 나노섬유의 고온 대기 및 SO2 가스분위기에서의 부식물성
Characterization of Air and SO2 Gas Corrosion of Silicon Carbide Nanofibers
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The SiO vapor that was generated from a mixture of Si and SiO2 was reacted at 1350oC for 2 h under vacuum with carbon nanofibers to produce SiC nanofibers having an average diameter of 100~200 nm. In order to understand the gas corrosion behavior, SiC nanofibers were exposed to air up to 1000oC. SiC oxidized to amorphous SiO2, but its oxidation resistance was inferior unlike bulk SiC, because of high surface area of nanofibers. When SiC nanofibers were exposed to Ar-1% SO2 atmosphere, SiC oxidized to amorphous SiO2, without forming SiS2, owing to the thermodynamic stability of SiO2.
Abstract
The SiO vapor that was generated from a mixture of Si and SiO2 was reacted at 1350oC for 2 h under vacuum with carbon nanofibers to produce SiC nanofibers having an average diameter of 100~200 nm. In order to understand the gas corrosion behavior, SiC nanofibers were exposed to air up to 1000oC. SiC oxidized to amorphous SiO2, but its oxidation resistance was inferior unlike bulk SiC, because of high surface area of nanofibers. When SiC nanofibers were exposed to Ar-1% SO2 atmosphere, SiC oxidized to amorphous SiO2, without forming SiS2, owing to the thermodynamic stability of SiO2.
참고문헌 (12)
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