EPMA and GDOES in functional-gradient hardmetal systems

Jose Garcia, Susanne Trampert, Walter Lengauer, Marcel Bohn, Vera Ucakar, Ivica Smid, Klaus Dreyer

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

WDS-EPMA and GDOES measurements were applied for the characterization of the in-situ surface modification process of (Ti, W)C-based hard-metals by in-diffusion of carbon and nitrogen leading to complicated microstructures composed by layers and/or gradients. The calibration of the analytical techniques was performed with chemically characterized specimens prepared by diffusional techniques or hot-pressing. In addition, for the GDOES method, certified reference materials (CRMs) have been used. The work was started from a re-investigation of the W-C and Mo-C systems in order to measure homogeneity regions of the various phases prepared by use of diffusion couples. Subsequently, the metal and non-metal contents of various sequences of layers and/or gradients in functional-gradient hardmetals (FGHs) were measured. Both methods were employed as complementary tools to get information about the element-concentration distribution in FGHs so that a better understanding of the influence of process parameters for fabrication of special hardmetals is possible.

Original languageEnglish (US)
Pages (from-to)223-231
Number of pages9
JournalMikrochimica Acta
Volume133
Issue number1-4
DOIs
StatePublished - Jan 1 2000

All Science Journal Classification (ASJC) codes

  • Analytical Chemistry

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