发明名称 POLYCRYSTALLINE CERAMICS LIGHT-EMITTING TUBE FOR HIGH LUMINANCE DISCHARGE LAMP AND ITS MANUFACTURING METHOD
摘要 PROBLEM TO BE SOLVED: To improve reliability for use for a long period by providing a necessary property to the capillary part without deteriorating the property of the body part. SOLUTION: After alumina powder is mixed, kneaded and formed, the water absorption ratio of the formed product is controlled between 15-30% wt.% at the first temporary firing process (S5), and the frit-adhered part of the capillary top end is steeped (S6) in the water solution of magnesium nitric acid of 0.06-0.9 mol/l and temporarily fired in the second temporary firing process (S7), and then it is fired (S8) in the hydrogen atmosphere at 1750-1900 deg.C and the average particle size at the frit sealing portion is made smaller as 20%-90% of the average particle size of the body part.
申请公布号 JP2002184352(A) 申请公布日期 2002.06.28
申请号 JP20010156061 申请日期 2001.05.24
申请人 NGK INSULATORS LTD 发明人 KURASHINA MITSURU;ASAI MICHIO
分类号 C04B35/115;H01J9/24;H01J61/30 主分类号 C04B35/115
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