Wettability and interfacial reactions in the systems Ni/YSZ and Ni/Ti-TiO2/YSZ

被引：114

作者：

Tsoga, A ^{[1
]}

Naoumidis, A ^{[1
]}

Nikolopoulos, P ^{[1
]}

机构：

[1] RES CTR JULICH,INST MAT ENERGY SYST,JULICH,GERMANY

来源：

ACTA MATERIALIA | 1996年 / 44卷 / 09期

关键词：

D O I：

10.1016/1359-6454(96)00019-5

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In order to minimise the interfacial energy between metal and ceramic in the SOFC Ni/YSZ cermet anode, the wetting properties and interfacial reactions for the systems Ni/YSZ and Ni/Ti-TiO2/YSZ were studied in the temperature range 1250-1500 degrees C. In purified Ar-4 vol.% H-2 atmosphere no reaction takes place between the metallic and the ceramic phase and measurements of the contact angle between molten metals and ceramic at 1500 degrees C showed no wettability, theta > 90 degrees. The lowest contact angle, compared to that corresponding to the Ni/YSZ system (117 degrees), was achieved for the system Ni/YSZ (TiO2), (103 degrees). At 1500 degrees C and in the presence of carbon in the furnace atmosphere, an interaction was observed to occur at the metal-ceramic interface, caused by the carbon dissolved in the metallic melt. The extent of such an interaction depends on time and carbon potential in the gas phase and influences the wetting properties of the systems, leading to better wetting conditions as the interaction extent increases. Copyright (C) 1996 Acta Metallurgica Inc.

引用

页码：3679 / 3692

页数：14

共 19 条

[11]

LAURENT V, 1988, THESIS I NATL POLYTE

[12]

LIOU SS, 1989, 1ST P INT S SOL OX F, P81

[13]

MARQUES RMC, 1993, 3RD P INT S SOFC PEN, P513

[14]

Miyamoto H., 1993, Proceedings of the Third International Symposium on Solid Oxide Fuel Cells, P504

[15]

Naidich YV, 1981, PROG SURF MEMBR SCI, P353, DOI DOI 10.1016/B978-0-12-571814-1.50011-7

[16]

Okumura K., 1993, Proceedings of the Third International Symposium on Solid Oxide Fuel Cells, P444

[17]

ROINE A, THERMODYNAMIC DATA H

[18] WORK OF ADHESION IN ZRO2 LIQUID-METAL SYSTEMS [J].

SOTIROPOULOU, D ;

NIKOLOPOULOS, P .

JOURNAL OF MATERIALS SCIENCE, 1993, 28 (02) :356-360

[19]

TSOGA A, IN PRESS J MAT SCI

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