Properties and Corrosion Resistance of AISI H13 Hot-Work Tool Steel with Borided B4C Powders

Ali Günen; İsmail Hakki Karahan; Mustafa Serdar Karakaş; Bülent Kurt; Yusuf Kanca; Vedat Veli Çay; Murat Yıldız

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자료유형: 학술저널

저자정보: Ali Günen (Iskenderun Technical University) İsmail Hakki Karahan (Mustafa Kemal University) Mustafa Serdar Karakaş (Konya Technical University) Bülent Kurt (Nevşehir Hacı Bektaş Veli University) Yusuf Kanca (Hitit University) Vedat Veli Çay (Dicle University) Murat Yıldız (Iskenderun Technical University)

저널정보: 대한금속·재료학회 Metals and Materials International Metals and Materials International Vol.26 No.9

발행연도: 2020.1

수록면: 1,329 - 1,340 (12page)

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In this study, the surface of AISI H13 steel was borided with powder blends of B4Cand NaBF4using the powder-pack methodat 800, 900 and 1000 °C for 2, 4 and 6 h. The structural and mechanical characteristics of the boride layers formed on thesurface were characterized using scanning electron microscopy, energy dispersive spectroscopy, X-ray diffractometry, 2Dsurface profilometry, microhardness and electrochemical corrosion (3.5 wt% NaCl) tests. The boride layer exhibited a singlephase structure (Fe2B) in samples coated at 800 °C and a dual-phase structure (FeB + Fe2B) at higher boriding temperatures(900 and 1000 °C). The boride layers were compact and crack-free in all boriding conditions. Depending on boridingparameters, the thickness, hardness and average surface roughness (Ra) of the coatings were found to range between 5.81and 102.46 μm, 1635–1915 HV and 0.315–0.650 μm, respectively. The borided AISI H13 steel displayed up to 33.5 timesand 2.4 times higher corrosion resistance than untreated AISI H13 steel and martensitic AISI 431 steel, respectively. Thissuggests potential use of borided AISI H13 steel in the steam turbines and marine applications as an alternative to the morecostly martensitic and duplex stainless steel grades. The corrosion resistance depended on the phase structure (single- ordual-layer), density, thickness and surface roughness of the boride coatings.

#Steel · Boriding · Corrosion · NaCl

참고문헌 (35)

참고문헌 신청

ASM International / 1990 / ASM International, ASM Handbook, Volume 1: Properties and Selection: İrons, Steels, and High-Performance Alloys / ASM International :1063

D.T. Llewellyn / 1998 / Steels: Metallurgy and applications / Elsevier :400

B.S. Covino / 2003 / Corrosion: Fundamentals, Testing and Protection, vol. 13A / ASM International :1135

E. Bardal / 2000 / Corrosion and Protection / Springer :315

J.R. Davis / 2014 / Surface Engineering for Corrosion and Wear Resistance / CRC Press Taylor & Francis Group :289

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