| 학회 |
한국재료학회 |
| 학술대회 |
2015년 봄 (05/14 ~ 05/15, 구미코) |
| 권호 |
21권 1호 |
| 발표분야 |
D. 구조 재료 |
| 제목 |
Mechanical and dielectric properties of Porous Si3N4/BN Composite by adding pore-forming agent |
| 초록 |
Si3N4 is a suitable material for high temperature radome application because of its good mechanical properties at room and elevated temperature. However, a studied Si3N4 has a relatively high dielectric constant of 7.9 – 8.2 at 8 – 10 GHz for the use of high temperature radomes material. In this study, porous Si3N4/BN composite ceramics were fabricated by pressureless sintering in order to reduce the dielectric constant. Spherical-shaped pore-former agent, PMMA was employed to Si3N4/BN composite. We controlled the amount of both PMMA and BN contents in order to control the porosity of Si3N4/BN composite and tune the properties; moderately high flexural strength and low dielectric property. |
| 저자 |
Hyun Min Lee1, Seung Jun Lee2, SeungSU Baek2, Do Kyung Kim1
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| 소속 |
1KAIST, 2ADD |
| 키워드 |
dielectric; Si3N4; ceramic composite; porosity
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| E-Mail |
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