Christian Lyck, Peter Valler, P. Kjeldsteen, N. Tiedje
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引用次数: 0
Abstract
A room-temperature extrusion technique, originally developed for the extrusion of ceramic powders, has been adapted to the extrusion of metal powders. The extrusion technology relies on cellulose-derived binders, which in traditional ceramic practices are burned off during sintering in air. In this work, the influence of hydrogen-debinding on density, carbon and oxygen levels is studied by comparing the effects of hydrogen debinding with the effects of air-debinding in as-debound and as-sintered samples. The study found debinding in hydrogen to result in significant levels of residual carbon, which promote austenite at the sintering temperature, and reduce densification. Debinding in air was effective, resulting in very low carbon concentrations and densification of up to 97 vol.-%, but also a considerable amount of oxides, which were not completely reduced during hydrogen sintering.
期刊介绍：
Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance.
Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.
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