RISS 학술연구정보서비스

검색
다국어 입력

http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.

변환된 중국어를 복사하여 사용하시면 됩니다.

예시)
  • 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
  • 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
닫기
    인기검색어 순위 펼치기

    RISS 인기검색어

      검색결과 좁혀 보기

      선택해제

      오늘 본 자료

      • 오늘 본 자료가 없습니다.
      더보기
      • 무료
      • 기관 내 무료
      • 유료
      • KCI등재

        Thermodynamic stability of graphitic diamond films produced from catalytic chemical vapour deposition reactor

        S.E. Iyuke,M.O. Daramola,P. Mokena,A. Marshall 한국공업화학회 2015 Journal of Industrial and Engineering Chemistry Vol.30 No.-

        Thermodynamic stability of synthetic diamond films, produced at 1000–1100 8C from a swirledcontinuousCatalytic Chemical Vapour Deposition (CCVD) reactor, is reported. Simple photographs of theas-produced samples displayed several colours that characterize typical beam diffraction spectra ofdiamond. Raman spectrum revealed a single sharp diamond peak at 1381.4 cm 1 and graphite peaks of1560 and 1360 cm 1, confirming formation of graphitic carbons and production of graphitic diamond. The quantity of the as-prepared diamond was proportional to the acetylene to hydrogen ratio used in thereactor feed and the apparent proportional relationship between the acetylene and hydrogen ratio andthe quantity of diamonds produced only holds at sufficient quantity of acetylene. The synthesizeddiamond films were unstable at temperature of 90 8C, but displayed phase stability when stored at roomtemperature in a dark cupboard for 1.5 years. However, presence of impurities in the diamond filmsnegatively affects their thermodynamic stability, and effective purification method to remove theimpurities could improve the thermodynamic stability.

      연관 검색어 추천

      이 검색어로 많이 본 자료

      활용도 높은 자료

      해외이동버튼