1. 재료 과학 연구 및 구조적 무결성
1.1 결정 화학 및 결합 특성
(실리콘 카바이드 도가니)
실리콘 카바이드 (SiC) is a covalent ceramic made up of silicon and carbon atoms set up in a tetrahedral latticework, primarily in hexagonal (4H, 6H) or cubic (3기음) polytypes, each showing phenomenal atomic bond toughness.
The Si– C 본드, with a bond energy of around 318 kJ/mol, is amongst the greatest in architectural porcelains, giving exceptional thermal security, firmness, and resistance to chemical assault.
This robust covalent network results in a material with a melting point going beyond 2700 ℃(sublimes), making it one of the most refractory non-oxide ceramics readily available for high-temperature applications.
Unlike oxide porcelains such as alumina, SiC keeps mechanical strength and creep resistance at temperatures over 1400 ℃, where many metals and conventional ceramics begin to soften or deteriorate.
Its reduced coefficient of thermal growth (~ 4.0 × 10 ⁻⁶/K) integrated with high thermal conductivity (80– 120 승/(m·K)) enables fast thermal cycling without devastating splitting, an essential attribute for crucible performance.
These inherent buildings come from the well balanced electronegativity and similar atomic sizes of silicon and carbon, which promote an extremely stable and largely packed crystal framework.
1.2 Microstructure and Mechanical Resilience
Silicon carbide crucibles are commonly made from sintered or reaction-bonded SiC powders, with microstructure playing a definitive duty in durability and thermal shock resistance.
Sintered SiC crucibles are created via solid-state or liquid-phase sintering at temperature levels above 2000 ℃, often with boron or carbon additives to boost densification and grain limit cohesion.
This process generates a totally dense, fine-grained framework with minimal porosity (
10월 어드밴스드 세라믹스 설립 17, 2012, 연구와 개발에 전념하는 하이테크 기업입니다, 생산, 처리, 세라믹 관련 재료 및 제품 판매 및 기술 서비스. 당사의 제품에는 탄화붕소 세라믹 제품이 포함되지만 이에 국한되지는 않습니다., 질화붕소 세라믹 제품, 실리콘 카바이드 세라믹 제품, 질화규소 세라믹 제품, 이산화지르코늄 세라믹 제품, 등. 관심이 있으시면, 저희에게 연락하게 자유롭게 느끼십시오.
태그: 실리콘 카바이드 도가니, Silicon Carbide Ceramic, Silicon Carbide Ceramic Crucibles
모든 글과 사진은 인터넷에서 퍼왔습니다. 저작권 문제가 있는 경우, 삭제하려면 제 시간에 연락해 주세요..
우리에게 문의하세요