Powder Processes

Research output: Chapter in Book/Report/Conference proceedingChapter

14 Scopus citations

Abstract

This chapter focuses on processes that transform a metal, ceramic, or polymer powder into a solid object. Powders can be formed into shapes by processes that involve compaction and thermal treatment for densification, or they can be converted into functional parts by additive manufacturing processes. To understand powder processing better, the chapter begins with an introduction to the powder state, including particle packing and flow, and continues with a discussion of the macroscopic and microscopic changes that occur during “firing” or thermal treatment, including sintering and grain growth. Several processes that involve compaction are covered, including uniaxial pressing, isostatic pressing, and variations that involve heat and pressure. Rotational molding, a process that begins with a thermoplastic polymer powder and ends with a hollow shape, is introduced as well. The chapter concludes with a discussion of powder-based additive manufacturing processes, such as selective laser sintering.

Original languageEnglish (US)
Title of host publicationMaterials Processing
Subtitle of host publicationA Unified Approach to Processing of Metals, Ceramics and Polymers
PublisherElsevier
Pages343-414
Number of pages72
ISBN (Electronic)9780123851321
ISBN (Print)9780123851338
DOIs
StatePublished - Jan 1 2016

Bibliographical note

Publisher Copyright:
© 2016 Elsevier Inc. All rights reserved.

Keywords

  • Compaction
  • Isostatic pressing
  • Powder processing
  • Rotational molding
  • Selective laser sintering
  • Sintering
  • Uniaxial pressing

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