Influence of the material composition on the nitriding result of steels byplasma immersion ion implantation

Citation
C. Blawert et al., Influence of the material composition on the nitriding result of steels byplasma immersion ion implantation, SURF COAT, 131(1-3), 2000, pp. 334-339
Citations number
9
Categorie Soggetti
Material Science & Engineering
Journal title
SURFACE & COATINGS TECHNOLOGY
ISSN journal
02578972 → ACNP
Volume
131
Issue
1-3
Year of publication
2000
Pages
334 - 339
Database
ISI
SICI code
0257-8972(20000901)131:1-3<334:IOTMCO>2.0.ZU;2-F
Abstract
The influence of different alloying elements and their concentration on the nitriding behaviour of steel by plasma immersion ion implantation (PI3) wa s examined. Treatments were performed at 300 degreesC using different high voltage (HV) repetition rates of 100, 200 and 300 Hz. The steels were alloy ed either with 0.09, 0.45 and 0.9 wt.% C, 0.11, 0.3 and 0.93 wt.% Al or 0.9 3, 3.6 and 13.2 wt.% Cr. The nitride formation for the various alloys and p arameters was studied using X-ray diffraction (XRD) and metallographic cros s-sections in scanning electron microscopy (SEM), showed a nitride formatio n that is strongly influenced by the material composition. Additional infor mation is obtained by glow discharge optical emission spectroscopy (GDOS) d epth profiles and instrumented microhardness measurements. The effect of th e HV repetition rate is not very clear, as on the one hand the implanted do se is increased, but on the other nitride formation seemed to be disturbed by higher repetition rates. The results will be discussed under the aspect of improving the nitriding efficiency of PI3. (C) 2000 Elsevier Science B.V . All rights reserved.