• Title/Summary/Keyword: low temperature sintering.

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Low Temperature Sintering and Dielectrics Properties of $(Ba_{1-x}Sr_x)TiO_3$ Ceramics by Addition (첨가물에 따른 $(Ba_{0.6}Sr_{0.4})TiO_3$의 저온소결 및 유전특성)

  • Jeon, So-Hyun;Kim, In-Sung;Song, Jae-Sung;Min, Bok-Gi;Yoon, Jon-Do
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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    • 2005.11a
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    • pp.202-203
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    • 2005

  • To recognize whether admixture affects some $(Ba_{0.6}Sr_{0.4})TiO_3$, powder in this research $Li_2CO_3$, MgO, $MnO_2$ adding each 3 wt % by Tape casting method thick film make. Sitering temperature lowered 1300$^{\circ}C$ adding $Li_2CO_3$, and density is 5.942g/$cm^3$, and specific inductive capacity increases about decuple and displayed 4000. Climbed sitering temperature 1400$^{\circ}C$ adding MgO, specific inductive capacity reduced 1/2 times. Lowered sintering temperature 1325$^{\circ}C$ low adding $MnO_2$.

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Low Temperature Processing of Porous Silicon Carbide Ceramics by Carbothermal Reduction (탄소열환원 공정을 사용한 다공질 탄화규소 세라믹스의 저온 제조공정)

  • Eom, Jung-Hye;Jang, Doo-Hee;Kim, Young-Wook;Song, In-Hyuck;Kim, Hai-Doo
    • Journal of the Korean Ceramic Society
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    • v.43 no.9 s.292
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    • pp.552-557
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    • 2006

  • A low temperature processing route for fabricating porous SiC ceramics by carbothermal reduction has been demonstrated. Effects of expandable microsphere content, sintering temperature, filler content, and carbon source on microstructure, porosity, compressive strength, cell size, and cell density were investigated in the processing of porous silicon carbide ceramics using expandable microspheres as a pore former. A higher microsphere content led to a higher porosity and a higher cell density. A higher sintering temperature resulted in a decreased porosity because of an enhanced densification. The addition of inert filler increased the porosity, but decreased the cell density. The compressive strength of the porous ceramics decreased with increasing the porosity. Typical compressive strength of porous SiC ceramics with ${\sim}70%$ porosity was ${\sim}13 MPa$.

  • https://doi.org/10.4191/KCERS.2006.43.9.552 인용 PDF KSCI