2015-Sustainable Industrial Processing Summit
SIPS 2015 Volume 6: Coatings, Cement, Rare Earth & Ferro-alloys
| Editors: | Kongoli F, Yildirim H, Hainer S, Hofmann K, Proske T, Graubner C.A., Albert B |
| Publisher: | Flogen Star OUTREACH |
| Publication Year: | 2015 |
| Pages: | 200 pages |
| ISBN: | 978-1-987820-29-4 |
| ISSN: | 2291-1227 (Metals and Materials Processing in a Clean Environment Series) |
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Tribological Properties of the Fe-Al-Cr Alloyed Layer by Double Glow Plasma Surface Metallurgy
Xixi Luo1; Zhengjun Yao1;1NANJING UNIVERSITY OF AERONAUTICS AND ASTRONAUTICS, Nanjing, China;
Type of Paper: Regular
Id Paper: 143
Topic: 19
Abstract:
Fe-Al-Cr alloyed layer was deposited onto the surface of Q235 low carbon steel via double glow plasma surface metallurgy technology to improve its wear resistance. The microstructures, phase constitutes, composition distributions and microhardness were determined.The tribological properties of Fe-Al-Cr alloyed layer were tested on a ball-on-disk tribometer by rubbing against GCr15 and silicon nitride (Si3N4) balls at room temperature and high temperature (i.e. 250A°C and 450A°C), respectively. The results indicated that the alloyed layer was 25 Aµm in thickness, which was homogeneous and compact, and it showed metallurgically adhered to the substrate. The main phases of the alloyed layer were Fe2AlCr, Fe3Al, FeAl, Fe(Cr) sosoloid, Cr23C6 and I±-Fe(Al).According to the frictional wear tests, the frictional coefficientand specific wear rate of the Fe-Al-Cr alloyed layer were all lower than those of the substrate under room and high temperature. The special wear rate of treated specimen at 450A°C was 2.524A—10-4mm3 N-1 m-1, which was only 45.2% of the untreated specimen.