Artículos de revistas
Effect of Carbon on the Compound Layer Properties of AISI H13 Tool Steel in Pulsed Plasma Nitrocarburizing
Registro en:
Plasma Processes And Polymers. Wiley-v C H Verlag Gmbh, v. 4, n. S728, n. S731, 2007.
1612-8850
WOS:000207735200141
10.1002/ppap.200731806
Autor
Basso, RLO
Figueroa, CA
Zagonel, LF
Pastore, HO
Wisnivesky, D
Alvarez, F
Institución
Resumen
Due to the mechanical and inertness properties of the epsilon-Fe(2-3)N phase, its formation as a compact monolayer is most wanted in plasma surface treatments of steels. This phase can be obtained by the inclusion of carbon species in the plasma. In this work, we present a systematic study of the carbon influence on the compound layer in an AISI H13 tool steel by pulsed plasma nitrocarburizing process with different gaseous ratios (0% <= [CH(4)]/[N(2)_CH(4)_H(2)] <= 4%). The plasma treatment was carried out for 5 h at 575 degrees C. The microstructure and phase composition of the modified layers were studied by scanning electron microscopy and X-ray diffraction, respectively. X-Ray photoelectron spectroscopy was used to measure the relative concentration of carbon and nitrogen on the surface. The hardening profile induced by the nitrocarburized process is also reported. 4 1 S728 S731