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T. Shing, S. Luyckx, I. Northrop, I. Wolff (2001)
The effect of ruthenium additions on the hardness, toughness and grain size of WC–CoInternational Journal of Refractory Metals & Hard Materials, 19
Y. Milman, S. Luyckx, I. Northrop (1999)
Influence of temperature, grain size and cobalt content on the hardness of WC–Co alloysInternational Journal of Refractory Metals & Hard Materials, 17
JOURNAL OF MATERIALS SCIENCE L ETTERS 21, 2002, 1681 – 1682 S. LUYCKX School of Process and Materials Engineering, University of the Witwatersrand, Johannesburg 2050, South Africa Room temperature measurements have shown that ad- Fig. 2 summarizes the same results as Fig. 1 but ditions of Ru harden WC-Co significantly, at least at shows more immediately the variation in hardness with Ru/Co mass ratios higher than ∼0.15 [1]. However, increasing Ru content at the various temperatures. It since in practical applications WC-Co is usually ex- shows that up to 600 C Ru additions lead to increases posed to temperatures as high as 800–900 C (e.g., in in hardness which depend on Ru content, but above that metal cutting) it is important to establish if the harden- temperature the influence of Ru content is negligible. ing effect of Ru persists at high temperatures. It has been found by EDS analysis that in WC-Co-Ru The only data available on the high temperature hard- alloys Ru is in solution in the Co binder [1]. Therefore, ness of WC-Co-Ru are found in a patent [2], where the the hardening observed is due to the hardening of the data reported are from random grades,
Journal of Materials Science Letters – Springer Journals
Published: Oct 12, 2004
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