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Triangular (TPGN 160308) WC-6 wt.%Co inserts having different average grain sizes (1 and 3 μm) were submitted to surface roughening either by wet etching with Murakami's reagent or by a heat treatment in the hot filament chemical vapour deposition (HFCVD) reactor. The heat treatment was performed in a monohydrogen-rich atmosphere at substrate temperatures as high as 1000 o C. Scanning electron...
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