Pressureless sintering of chromium diboride using spark plasma sintering facility

Research output: Contribution to journalArticlepeer-review

Authors

  • K. Sairam
  • J. K. Sonber
  • Murthy Tammana
  • A. K. Sahu
  • R. D. Bedse
  • And 1 others
  • J. K. Chakravartty

Colleges, School and Institutes

External organisations

  • Bhabha Atomic Research Centre

Abstract

Sinterability of monolithic CrB2 was investigated under pressureless sintering condition using spark plasma sintering facility (SPS). Monolithic chromium diboride (CrB2) was sintered in a modified die setup instead of traditional/conventional plunger and die assembly. This kind of assembly creates pressureless sintering conditions in spark plasma sintering unit. The main objective of this modified setup is to couple the combined aspect of conventional pressureless sintering with fast heating. Densification experiments using CrB2 were conducted at temperatures in the range of 1600 °C to 2000 °C with different dwelling period (1-30 min) under no load condition. The effect of multi-step sintering treatment on the densification behaviour of CrB2 was also investigated. The density and the resulted microstructures of the sintered samples are presented and discussed in this paper.

Details

Original languageEnglish
Pages (from-to)165-171
Number of pages7
JournalInternational Journal of Refractory Metals and Hard Materials
Volume58
Early online date10 May 2016
Publication statusPublished - 1 Aug 2016

Keywords

  • Boride, CrB, Grain coarsening, Microstructure, Pressureless sintering, Spark plasma sintering