• 제목/요약/키워드: Minimum Surface Temperture

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고온벽면에 의한 수소-공기 예혼합기체의 자연발화에 관한 수치적 해석 (Numerical Analysis on the Autoignition of Hydrogen/Air Mixture Near a Hot Surface)

  • 박은성;백승욱
    • 대한기계학회논문집
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    • 제16권1호
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    • pp.70-76
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    • 1992
  • 본 연구에서는 수소와 공기의 예혼합기체가 가열된 벽면에 노출되어 있는 경 우의 점화문제를 1차원 비정상상태로 예측하고자 하며 특히, 계산에서 가정하는 화학 반응기구가 갖는 정확성에 관하여 수치해석적으로 고찰하고자 한다.

SnCl$_4$가수분해 반응의 화학증착법에 의한 SnO$_2$박막의 제조 및 가스센서 특징(I) Preparation of SnO2 Thin Films by chemical Vapor Deposition Using Hydrolysis of SnCl4 and gas-sensing characteristics of the Film (Preparation of SnO$_2$ Thin Films by Chemical Vapor Deposition Using Hydrolysis of SnCla$_4$ and Gas-sensing Characterisics of the Film -Effect of Deposition Variables on the Deposition Behavior and the Electrical Resistivity of SnO$_2$ Thin Film-)

  • 김용일;김광호;박희찬
    • 한국표면공학회지
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    • 제23권2호
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    • pp.18-23
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    • 1990
  • Thin films of tin oxide were prepared by chemical vapor deposition (C.V>D) using the hydrolysis reaction of SnCl4, Deposition rate increased with the increase of temperature up to $500^{\circ}C$and then decreased at $700^{\circ}C$, Deposition rate with SnCl4 partial pressure showed RidealEley behavir. It was found that SnO2 thin film deposited at the temperature above $400^{\circ}C$ had(110) and (301) plane preferred orientation with crystallinity of rutite structure. Electrical resisvity of SnO2 thin film decreased with increase increase of deposition temperature and showed minimum value of 10-3 ohm at $500^{\circ}C$and than largely increased increased with further increase of deposition temperture.

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