Abstract
The paper presents the experiments on adding rare-earth element cerium to diamond matrix composites. Based on the do** of rare earth in metal powders including tungsten carbide, a small amount of nickel, iron entirely replacing cobalt in diamond matrix and the process route of rare earth do** is indicated. The performance of matrix composites with and without rare-earth elements has been assessed. The results obtained show that the flexural strength, the hardness, and the impact ductility of matrix composites with rare-earth elements have been improved. The flexural strength and the impact ductility increased correspondently by 10–62% and about 5, as compared to composites free of rare-earth elements. Rare-earth diamond tool matrix composites where Co was r’eplaced with Fe, which provides a good practical service performance and a low price, have been successfully studied, corresponding diamond bits and saw blades have been manufactured.
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Original Russian Text © Q. Zou, W. Gong, X. Zeng, Y. Wu, J. Liu, Sh. Zou, 2009, published in Sverkhtverdye Materialy, 2009, Vol. 31, No. 6, pp. 67–74.
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Zou, Q., Gong, W., Zeng, X. et al. Do** Fe-based diamond tool matrix composites with a rare-earth element. J. Superhard Mater. 31, 407–412 (2009). https://doi.org/10.3103/S1063457609060082
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DOI: https://doi.org/10.3103/S1063457609060082