Metal nitride and alloy synthesis using high pressures and temperatures

A. J. McGaff, George Serghiou, D. J. Frost

Research output: Contribution to journalArticlepeer-review

Abstract

In a laser-heated diamond cell, we prepare high-density metal nitrides by reaction of an element with a nitrogen pressure medium, and binary alloys by reaction of one element with another in preferably an inert pressure medium such as argon or neon. One of our objectives is to establish the parameters required for the synthesis of both metal nitrides and alloys in a multianvil press using elemental starting materials. We have already synthesized transition metal nitrides in a multianvil press using elemental starting materials, including hexagonal nickel nitride and alkali rhenium nitrides. Here, starting with the elements, we report the synthesis of magnesium sodium iron nitride and magnesium iron nitride at pressures and temperatures up to 15 GPa and 1800 K, respectively, and recovery of a GeSi alloy from 15 GPa after heating the elements at 1500 K. We also briefly present focused ion beam processing of recovered reaction products tailored for electron microscopy analysis.
Original languageEnglish
Pages (from-to)491-495
Number of pages5
JournalHigh Pressure Research
Volume28
Issue number4
DOIs
Publication statusPublished - Jan 2008

Keywords / Materials (for Non-textual outputs)

  • solid–solid transitions
  • high pressure
  • synthesis
  • electron microscopy
  • alloys
  • ceramics

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