Yamato Electronic Co., Ltd.

Tsugumitsu Sarata

Yasuo Hatate

Masahiro Yoshida

Tomoyuki Honda

Yoshimitsu Uemura

Hiroyuki Fukunaga

Masahiro Iwashita

A lead-free glass material for use in sealing, which has a glass composition being free of lead and exhibits high performance in the range of choices for the material to be sealed, the sealing processability, the sealing quality and the like, has a glass composition including four types of metal oxides of VO, ZnO, BaO and POas essential ingredients.

Lead-free glass material for use in sealing and, sealed article and method for sealing using the same

Provided with a glass composition including a network-former oxide composed of any one of or both of BOand VOof 20-80% by weight, ZnO of 0-60% by weight and BaO of 0-80% by weight, wherein at least one of ZnO and BaO is included as an essential ingredient. The present invention is a glass material for use in sealing, which is of lead-free series, can be used for sealing at a low processing temperature and within a wide temperature range, has a low thermal expansion coefficient, superior adhesion, superior sealing processability, superior adherence, superior chemical stability, superior strength and the like and comprises sufficient practical performance to substitute for lead glass.

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Kagoshima, Japan

Tsugumitsu Sarata