Mo-SiO2 functionally graded materials for high intensity discharge lamp

Ayumu Umemoto, Koichi Hayashi, Kunihiko Nakashima, Noritaka Saito, Kenji Kaneko, Keisaku Ogi

研究成果: 著書/レポートタイプへの貢献会議での発言

抄録

The conventional high intensity discharge lamps are made of Mo foil-sealing method, in which the Mo-metal of 30 μm thick is sandwiched by the fused silica envelope. The conventional high intensity discharge lamps therefore requires cooling system to reduce the thermal stress between Mo and fused silica during the switching operation and a lung sealing zone is usually required to complete hermeticity, especially in high power devices, so that the production of compact high intensity discharge lamps has been a Herculean task, Here, we show the invention of the new type of hermetically-sealed high intensity discharge lamps, made of Mo-SiO2 functionally graded material (FGM) as an electrode and a sealing component. In the case of high intensity discharge lamps with Mo-SiO2 FGM (FGM-Lanip), the thermal expansion coefficient between Mo and SiO2 is functionally graded so that it tolerates a large number of heating cycles, with no cooling system are required, Furthermore lamps survive without breakage of lamp takes place, The W electrode is totally separated from the lamp envelope by the FGM, so that no leakage of the luminous elements or gases takes place, when a large gas pressure exists inside a lamp.

元の言語英語
ホスト出版物のタイトルDevelopments and Applications of Advanced Engineering Ceramics and Composites - Proceedings of the 6th Pacific Rim Conference on Ceramic and Glass Technology, PacRim6
ページ53-58
ページ数6
出版物ステータス出版済み - 7 24 2006
イベント6th Pacific Rim Conference on Ceramic and Glass Technology, PacRim6 - Maui, HI, 米国
継続期間: 9 11 20059 16 2005

出版物シリーズ

名前Ceramic Transactions
192
ISSN(印刷物)1042-1122

その他

その他6th Pacific Rim Conference on Ceramic and Glass Technology, PacRim6
米国
Maui, HI
期間9/11/059/16/05

Fingerprint

Discharge lamps
Functionally graded materials
Electric lamps
Fused silica
Cooling systems
Gases
Electrodes
Leakage (fluid)
Patents and inventions
Thermal stress
Metal foil
Thermal expansion
Metals
Heating

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Materials Chemistry

これを引用

Umemoto, A., Hayashi, K., Nakashima, K., Saito, N., Kaneko, K., & Ogi, K. (2006). Mo-SiO2 functionally graded materials for high intensity discharge lamp. : Developments and Applications of Advanced Engineering Ceramics and Composites - Proceedings of the 6th Pacific Rim Conference on Ceramic and Glass Technology, PacRim6 (pp. 53-58). (Ceramic Transactions; 巻数 192).

Mo-SiO2 functionally graded materials for high intensity discharge lamp. / Umemoto, Ayumu; Hayashi, Koichi; Nakashima, Kunihiko; Saito, Noritaka; Kaneko, Kenji; Ogi, Keisaku.

Developments and Applications of Advanced Engineering Ceramics and Composites - Proceedings of the 6th Pacific Rim Conference on Ceramic and Glass Technology, PacRim6. 2006. p. 53-58 (Ceramic Transactions; 巻 192).

研究成果: 著書/レポートタイプへの貢献会議での発言

Umemoto, A, Hayashi, K, Nakashima, K, Saito, N, Kaneko, K & Ogi, K 2006, Mo-SiO2 functionally graded materials for high intensity discharge lamp. : Developments and Applications of Advanced Engineering Ceramics and Composites - Proceedings of the 6th Pacific Rim Conference on Ceramic and Glass Technology, PacRim6. Ceramic Transactions, 巻. 192, pp. 53-58, 6th Pacific Rim Conference on Ceramic and Glass Technology, PacRim6, Maui, HI, 米国, 9/11/05.
Umemoto A, Hayashi K, Nakashima K, Saito N, Kaneko K, Ogi K. Mo-SiO2 functionally graded materials for high intensity discharge lamp. : Developments and Applications of Advanced Engineering Ceramics and Composites - Proceedings of the 6th Pacific Rim Conference on Ceramic and Glass Technology, PacRim6. 2006. p. 53-58. (Ceramic Transactions).
Umemoto, Ayumu ; Hayashi, Koichi ; Nakashima, Kunihiko ; Saito, Noritaka ; Kaneko, Kenji ; Ogi, Keisaku. / Mo-SiO2 functionally graded materials for high intensity discharge lamp. Developments and Applications of Advanced Engineering Ceramics and Composites - Proceedings of the 6th Pacific Rim Conference on Ceramic and Glass Technology, PacRim6. 2006. pp. 53-58 (Ceramic Transactions).
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