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http://dx.doi.org/10.3740/MRSK.2004.14.1.052

A Study On the Sand Wear Resistance and Formation Behavior of Boride Layer Formed on Ni-Cr-Mo Steel by Plasma Paste Boronizing Treatment  

Cho J. H ((주)창원특수강)
Park H. K (창원대학교 금속재료공학과)
Son K. S (창원대학교 금속재료공학과)
Yoon J. H (창원대학교 금속재료공학과)
Kim H. S (한국전기연구원 전지연구그룹)
Kim C. G (부경대학교 신소재공학부)
Publication Information
Korean Journal of Materials Research / v.14, no.1, 2004 , pp. 52-58 More about this Journal
Abstract
The surface property and formation behavior of a boride layer formed on Ni-Cr-Mo steel in a plasma paste boronizing treatment were investigated. The plasma paste boronizing treatment was carried out at 973～1273 K for 1-7 hrs under the gas ratio of Ar:H$_2$ (2:1). The thickness of the boride layer increased with increasing temperature and time in the boronizing treatment. The cross-section of the boride layer was a tooth structure and the hardness was Hv 2000～2500. XRD analysis revealed that the compound was identified as FeB, $Fe_2$B, and mixed phase of FeB/$Fe_2$B in the boride layer formed at 973～1073 K, 1173K, and 1273K, respectively. The Ni-Cr-Mo alloy boronized at 1173-1273 K showed the best excellent wear resistance against the sand. As a results of corrosion test in 1 M $H_2$$SO_4$ solution, $Fe_2$B formed on the matrix alloy exhibited higher corrosion resistance than FeB.
Keywords
Plasma paste boronizing; Ni-Cr-Mo steel; FeB; Fe2B; X-ray diffraction test; Boride layer; Sand wear resistance.;
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  • Reference
1 L. S. Ljachovic and S. S. Bragilevskaja, Metalloved. term. obr. metallov, 6 (1972) 49
2 Badni C. and Mazza D., J. Mat. Sci. Lett., 7 (1988) 661   DOI
3 H. J. Hunger and G. Trute, Heat Treatment of metals, 11 (1991) 3
4 M. S. Son, Changwon Univ. Master Dissertation (1995)
5 S. D. Lee, Changwon Univ. Master Dissertation (1995)
6 ASTM, Wear and erosion, Metal corrosion, Section 3, (1998) 97
7 J. Rus, C. Luis De Leal, and D. N. Tsipas, J. of Materials Science Letters, 4 (1985) 558   DOI
8 Y. K. Jee, Changwon Univ. Master Dissertation (1994)
9 B. M. Cha, Changwon Univ. Master Dissertation (1994)
10 S.A Isakov and S.A Ai tshuler, Mogilev Techological Institute, Translated from Metal Ovedenniei Termicheskaya Obrabofka Metallov, No. 3, (1987) 5