Impact of powder morphology on quality of low-pressure injection moulded reaction-bonded net shape oxide ceramics

Autor:	Joachim R. Binder, Jürgen Haußelt, Nadja Schlechtriemen, Regina Knitter
Rok vydání:	2013
Předmět:	Materials science Raw material Microstructure Rheology visual_art Particle-size distribution Materials Chemistry Ceramics and Composites visual_art.visual_art_medium Particle Injection moulding Ceramic Particle size Composite material
Zdroj:	Journal of the European Ceramic Society. 33:709-715
ISSN:	0955-2219
DOI:	10.1016/j.jeurceramsoc.2012.10.010
Popis:	Low-pressure injection moulding is a very efficient process for net shape manufacturing of ceramic micro parts. In order to obtain sintered ceramic specimens without shape distortion or damages, density gradients in the green bodies have to be avoided. Especially feedstocks with a solid loading near the critical powder volume content often tend to segregate the binder while flowing. However, the value of critical powder content can be significantly influenced by particle size, particle size distribution and particle morphology. This paper compares two powder mixtures of identical chemical compositions with different specific surfaces and morphology and evaluates their workability for low-pressure injection moulding. The aim of this paper is to identify the influence of morphology on feedstock rheology as well as on accuracy, mechanical properties and microstructure of net shape manufactured reaction-bonded zircon ceramics.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::40c8805f577c3362ba039428205219a9 https://doi.org/10.1016/j.jeurceramsoc.2012.10.010 Zobrazit plný text záznamu Full Text from ScienceDirect