소결온도 및 SiO₂ 첨가량에 따른 탄화규소의 마모 특성

다국어 초록 (Multilingual Abstract)

In this study, liquid phase sintered SiC (LPS-SiC) materials were made by hot pressing method. The particle size of nano-SiC powder was 30㎚. Alumina (Al₂O₃), yttria (Y₂O₃) and silica (SiO₂) were used for sintering additives. To investigate effects of SiO₂, ratios of SiO₂ contents were changed by five kinds. Materials have been sintered for 1 hour at 1760℃, 1780℃ and 1800℃ under the pressure of 20㎫. The system of sintering additives which affects a property of sintering as well as the influence depending on compositions of sintering additives were investigated by measurement of density, mechanical properties such as flexural strength, vickers hardness and sliding wear resistance were investigated to make sure of the optimum condition which is about matrix of SiCf/SiC composites. The abrasion test condition apply to load of 20N at 100RPM for 20min. Sintered density, flexural strength of fabricated LPS - SiC increased with increasing the sintering temperature. And in case of LPS-SiC with low SiO₂, sliding wear resistance has very excellent. Monolithic SiC 1800℃ sintering temperatures and 3wt% have excellent wear resistance.

목차 (Table of Contents)

• Abstract
• 1. 서론
• 2. 실험방법
• 3. 실험결과
• 4. 결론
• 후기
• 참고문헌

참고문헌 (Reference)

1 Ren, J. R., "Tribological Evaluation of Dental Composite ResinsContaining Prepolymerized Particle Fillers" 15 (15): 727-734, 2001

2 Kaya, H., "The Application Of Ceramic-Matrix Composites To The Automotive Ceramic Gas Turbine" 59 : 861-872, 1999

3 Snead, L. L., "Status of Silicon Carbide Composites For Fusion" 233 : 26-36, 1996

4 Yano, T., "Key Eng. Mater."

5 Sato, K., "Fabrication and Pressure Testing Of A Gas-Turbine Component Manufactured By A Preceramic-Polymer-Impregnation Method" 59 : 853-859, 1999

6 Ohring, M., "Engineering Materilas Science" Academic Press 1995

7 Raffray, A. R., "Design and Material Issues For High Performance SiCf/SiC-Based Fusion Power Cores" 55 : 55-95, 2001

8 Park, S. H., "A Study on Fraction and Wear Properties of MoSi2 Composites" 175-180, 2003