Model Experiments and the Theory of Sintering

Autor: G. C. Kuczynski
Rok vydání: 1990
Předmět:
Zdroj: Sintering Key Papers ISBN: 9789401068185
DOI: 10.1007/978-94-009-0741-6_32
Popis: Although men have been sintering ceramics and metals for thousands of years, the understanding of the fundamentals of the process was developed only during the past 50 years. Until the last war all sintering experiments were performed on powder compacts and consisted in measuring the overall density of such a compact as a function of time and temperature. The details of the geometry of the contacts between the individual particles are so complex and so unknown that the development of a quantitative theory from these bulk results would be hopeless. Between the wars no one bothered to construct a detailed theory suitable for comparison with experiments. The authors of the papers reporting on the relation between some property of a compact and time or temperature of sintering were content with qualitative and rather vague statements that densification was due to some type of flow such as diffusion or plastic flow, the latter was very popular among metallurgists. The readers interested in the early development in the field of powder technology are referred to the proceedings of the 1942 MIT Powder Metallurgy Conference edited by Professor Wulff [1].
Databáze: OpenAIRE