서지주요정보
탄화수소로부터 열분해카본 증착기구에 대한 연구 = A study on the deposition mechanism of pyrolytic carbonsfrom hydrocarbons
서명 / 저자 탄화수소로부터 열분해카본 증착기구에 대한 연구 = A study on the deposition mechanism of pyrolytic carbonsfrom hydrocarbons / 제정호.
저자명 제정호 ; Je, Jung-Ho
발행사항 [서울 : 한국과학기술원, 1983].
Online Access 원문보기 원문인쇄

소장정보

등록번호

4102322

소장위치/청구기호

학술문화관(문화관) 보존서고

DMS 8308

SMS전송

도서상태

이용가능

대출가능

반납예정일

초록정보

A new formation mechanism of isotropic, laminar, and columnar carbons is suggested. For this, a low RPM (≤2.4 RPM) tumbling bed and a stationary bed were used. Deposits were made on graphite substrates from propane and methane at low temperatures below 1200℃. Flow visualizations were made to support the new deposition mechanism. The microstructures of pyrolytic carbons were very dependent on the flow pattern of reactant gas, RPM, hydrocarbon concentration, the nature of hydrocarbon, and on the geometry of the bed. The suggested deposition mechanism can also be applied to the pyrolytic carbons deposited in fluidized bed or in stationary bed as well as in tumbling bed. Especially isotropic carbon can be obtained even in stationary bed, only if the requirements for deposition of isotropic carbon suggested by this study are satisfied. Deposition rate of pyrolytic carbons deposited in a tumbling bed was analysed with respect to the deposition mechanism. Scanning electron microscopies of fracture surfaces of crossection of pyrolytic carbons deposited in the tumbling bed could clarify the factors influencing the size of growth features of isotropic carbon and explain the role of gas-recirculation on the microstructures of pyrolytic carbons. And the process of the deposition of gas-borne droplets on substrate in tumbling bed below 2.4 RPM was sugqested. The reason why the size of soot collected on trap in fluidized bed is smaller than that of growth feature of isotropic carbon observed with TEM was explained. It is suggested how and why each type of microstructural component could be formed with deposition temperature, transmission electron microscopies of which can explain the change of its density with deposition temperature.

서지기타정보

서지기타정보
청구기호 {DMS 8308
형태사항 v, 141 p. : 삽도, 사진 ; 26 cm
언어 한국어
일반주기 저자명의 영문표기 : Jung-Ho Je
지도교수의 한글표기 : 이재영
지도교수의 영문표기 : Jai-Young Lee
학위논문 학위논문(박사) - 한국과학기술원 : 재료공학과,
서지주기 참고문헌 : p. 136-141
주제 Hydrocarbons.
Vapor-plating.
Thermal analysis.
증착. --과학기술용어시소러스
미세 구조. --과학기술용어시소러스
탄화수소 가스. --과학기술용어시소러스
열 분해. --과학기술용어시소러스
Microstructure.
QR CODE qr code