Evaporation of Silver during Cofiring with Barium Titanate
Evaporation of Silver during Cofiring with Barium Titanate
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与钛酸钡共烧时银的蒸发
DOI：
10.1111/j.1151-2916.2000.tb01451.x
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发表时间：
2004
期刊：
影响因子：
--
通讯作者：
W. Tuan
中科院分区：
文献类型：
--
作者：
Chin;W. Tuan
在电容器制造过程中，采用银和银钯合金与钛酸钡基陶瓷共烧。烧结过程中银向BaTiO 3中的扩散非常缓慢。然而，在高于银的熔点（960 ℃）的温度下，银的蒸气压高。本文研究了在1200°、1250°和1290°C烧结BaTiO 3陶瓷过程中银蒸发的影响。银蒸气可以通过多孔介质的孔道传输到几百微米的距离。Ag-Pd合金的熔点高于银的熔点;因此，在>1200°C的温度下几乎观察不到银蒸气从Ag-Pd合金中的传输。
Silver and Ag-Pd alloy are cofired with BaTiO 3 -based dielectrics during the manufacturing of capacitors. The diffusion of silver into BaTiO 3 during sintering is very slow. However, the vapor pressure of silver is high at temperatures greater than the melting point of silver (960°C). The effect of the evaporation of silver during the sintering with BaTiO 3 at 1200°, 1250°, and 1290°C is investigated in the present study. The silver vapor can transport through the pore channel of the dielectrics to a distance of a few hundred micrometers. The melting point of Ag-Pd alloy is higher than that of silver; therefore, the transportation of silver vapor from Ag-Pd alloy is hardly observed at temperatures >1200°C.