Tampere University of Technology

TUTCRIS Research Portal

Chemical synthesis of WC-Co from water-soluble precursors: The effect of carbon and cobalt additions to WC synthesis

Research output: Contribution to journalArticleScientificpeer-review

Details

Original languageEnglish
Pages (from-to)69-75
Number of pages7
JournalInternational Journal of Refractory Metals and Hard Materials
Volume56
DOIs
Publication statusPublished - 1 Apr 2016
Publication typeA1 Journal article-refereed

Abstract

The chemical synthesis of WC-Co from water-soluble precursors and the effect of carbon content and cobalt addition were studied. Ammonium metatungstate AMT as tungsten source, glycine as a carbon source and cobalt acetate Co(C2H3O2)2 as a cobalt source was dissolved in water and spray-dried, and thermal synthesis in Ar atmosphere was performed. In order to understand the effects of carbon content and cobalt addition on synthesis steps, and the chemical and phase structure, thermogravimetry (TGA) with Differential Scanning Calorimetry (DCS) and mass spectrometry was used together with X-ray diffractometry and chemical analysis. The results reveal that carbon content mainly affected reduction temperatures and cobalt addition to reaction route and solid state synthesis temperature. This presented manufacturing route with water-soluble raw materials was a potential way of preparing nanostructural WC-Co composition with the correct phase structure and chemical composition.

Keywords

  • Nano-sized WC-Co synthesis, Spray drying, Water soluble precursors

Publication forum classification

Field of science, Statistics Finland