Sintering behavior of nanophase MoSi2 with and without a ZrO2 additive

Qi Tan, Avigdor Zangvil

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

The densification of nanophase molybdenum disilicide synthesized by mechanical alloying was studied through pressureless sintering and hot pressing, showing a significant reduction of sintering temperature by the refinement of grain size. Enhancements of densification and fracture toughness of MoSi2 by grain refinement and by fine ZrO2 particles were revealed. Highly stabilized microstructure with grain sizes below 100 nm persists to 1350 °C during pressureless sintering. Although bimodal grain distribution (20 to 500 nm) appears in hot-pressed samples, the toughness and hardness are better than those of coarse-grained materials.

Original languageEnglish
Pages (from-to)2701-2703
Number of pages3
JournalJournal of Materials Research
Volume14
Issue number7
DOIs
StatePublished - Jul 1999
Externally publishedYes

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