Effect of oxygen on the molten BGO/Ir wetting and sticking

被引：10

作者：

Duffar, T. ^{[1
]}

Bochu, O. ^{[2
]}

Dusserre, P. ^{[2
]}

机构：

[1] PHELMA, SIMAP EPM, F-38402 St Martin Dheres, France

[2] Commissariat Energie Atom, F-38407 Grenoble, France

来源：

JOURNAL OF MATERIALS SCIENCE | 2010年 / 45卷 / 08期

关键词：

THERMODYNAMIC FUNCTIONS; HEAT-CAPACITY; IRO2; ADSORPTION; ENTHALPY; IRIDIUM;

D O I：

10.1007/s10853-009-4041-3

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In order to better understand the BGO-crucible interaction, the wetting of the molten BGO on Ir substrates has been studied by the sessile drop method at 1050 degrees C. It was found that the oxygen partial pressure in the surrounding atmosphere is an important parameter. For P(O2) > 0.1 mbar, full wetting is observed without any visible contact angle. X-ray diffraction analyses have shown that Bi(2)Ir(2)O(7) is formed at the interface. For P(O2) < 0.1 mbar, a drop is observed with a contact angle of 70 degrees and no chemical reaction is detected. Attempts to grow BGO samples under low oxygen partial pressure resulted in ingot without sticking with the crucible.

引用

页码：2140 / 2143

页数：4

共 14 条

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