Publication

Fabrication and sintering of fine yttria-doped ceria powder

Jan Van Herle
1997
Journal Articles

Abstract

Yttria-doped ceria powder was prepared from oxalate precursors. The oxalate coprecipitation bath parameters were closely monitored and found to influence the sintering behavior of the subsequently obtained oxide powders strongly. The use of concentrated (Ce,Y) metal nitrate solutions and dilute neutralized oxalic acid for coprecipitation were identified as the most-important parameters. Following calcination at 700°C, compacts of such powders were sintered to high density (98%) at 1400°C (4 h). Ball milling of the powder further reduced the sintering temperature. Dry milling, for tape-casting applications of the powder in particular, was more effective than wet milling. Tape-cast membranes were fired at 1400°C (2 h), with resulting densities of 98%.

Official source

https://infoscience.epfl.ch/entities/publication/dd875a03-02bf-4567-b44c-e65e2de26266

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Jan Van Herle
1997
Journal Articles

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/dd875a03-02bf-4567-b44c-e65e2de26266

About this result

Related concepts (29)

Powder metallurgy

Powder metallurgy (PM) is a term covering a wide range of ways in which materials or components are made from metal powders. PM processes can reduce or eliminate the need for subtractive processes in manufacturing, lowering material losses and reducing the cost of the final product. Powder metallurgy is also used to make unique materials impossible to get from melting or forming in other ways. A very important product of this type is tungsten carbide.

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Fabrication and sintering of fine yttria-doped ceria powder

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