Abstract
Cemented carbides with higher binder contents were irradiated with a CO2-pulse laser within a SEM to investigate the structural development in more detail. The decisive medium is the melting binder which dissolves the refractory carbide phase. In this way a superficial layer of an oversaturated solid solution with highly dispersed secondary carbides is produced. At higher pulse numbers a periodic structure is engraved in the surface by local evaporation as result of a self-amplifying resonance phenomenon.
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Müller, H., Wetzig, K., Schultrich, B. et al. In situ laser irradiation of WC-Co hard metals inside a scanning electron microscope. J Mater Sci 25, 4440–4448 (1990). https://doi.org/10.1007/BF00581105
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DOI: https://doi.org/10.1007/BF00581105