Journal of the Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회논문지)

The Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회)
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Analysis of Degradation Phenomena in Arc-Tube of Ceramic Metal Halide Lamp

세라믹 메탈할라이드 램프의 아크튜브 열화현상 분석

  • Kim, Woo-Young (Department of Electrical & Information Engineering, Wonkwang University) ;
  • Lee, Se-Il (Department of Electrical & Information Engineering, Wonkwang University) ;
  • Yang, Jong-Kyung (Department of Electrical & Information Engineering, Wonkwang University) ;
  • Jang, Hyeok-Jin (Korea Institute of Lighting Technology) ;
  • Park, Dae-Hee (Department of Electrical & Information Engineering, Wonkwang University)
  • 김우영 (원광대학교 정보통신공학과) ;
  • 이세일 (원광대학교 정보통신공학과) ;
  • 양종경 (원광대학교 정보통신공학과) ;
  • 장혁진 (한국조명연구원) ;
  • 박대희 (원광대학교 정보통신공학과)
  • Received : 2010.09.20
  • Accepted : 2010.11.05
  • Published : 2010.12.01
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Abstract

Recently, the demand of ceramic metal halide lamp has been expanded. Therefore, the lamp with high efficiency and long lifetime are increasing and the evaluation of reliability is needed. In this paper, the degradation phenomena of ceramic metal halide lamp was studied. The lamp was tested for 3000 on/off cycles with each cycle having a duration of 20 minutes on and 20 minutes off based on the accelerated aging experiment based on "Reliability Standards RS C 0085". As result, the corrosion of arc tube and leak was appeared from reaction between inner wall of PCA and chemical elements, and distortion of electrode was resulted from difference of thermal expansion between arc tube of PCA and electrode. Also, the efficiency of lamp was decreased by the change of inner pressure, operation temperature, and driving voltage from wall blackening.

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References

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