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Wear Resistance of Mo-Implanted H13 Steel by a Metal Vapor Vacuum Arc Source |
| YANG Jian-Hua1,2;ZHANG Tong-He2 |
| 1Department of Physics, Nantong Institute of Technology, Nantong 226007
2Radiation Beam and Materials Engineering Laboratory, Beijing Normal University, Beijing 100875 |
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| Cite this article: |
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YANG Jian-Hua, ZHANG Tong-He 2003 Chin. Phys. Lett. 20 1803-1806 |
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Abstract Pulsed molybdenum ion beams extracted from a metal vapor vacuum arc ion source at voltage of 25 kV or 48 kV were implanted into H13 steel with a high implantation dose of 5 x 1017 ions.cm-2 and a time-averaged ion beam current density of about 300μA.cm-2. We have investigated the steel implanted for wear resistance by an optical interference microscope and a pin-on-disc apparatus. The Rutherford backscattering spectroscopy demonstrated that rather low energy ions could penetrate quite deep into the substrates. It was observed by x-ray photoelectron spectroscopy and transmission electron microscopy that carbide of molybdenum appeared in the doped region. The results showed that dramatically improved wear resistance of H13 steel after molybdenum ion implantation at 48 kV was attributed to the development of Mo2C precipitates in the doped zone and to the formation of the implantation affected zone below the doped zone.
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| Keywords:
61.72.Ww
62.20.-x
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Published: 01 October 2003
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