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J. Korean Ceram. Soc. > Volume 43(6); 2006 > Article
Journal of the Korean Ceramic Society 2006;43(6): 358.
doi: https://doi.org/10.4191/kcers.2006.43.6.358
BCl3-H2-Ar 분위기를 이용한 2단계 플라즈마 보로나이징 특성
남기석, 이구현, 신평우1, 송요승2, 김배연3, 이득용4
한국기계연구원 표면연구부
1창원대학교 신소재공학부 금속공학과
2항공대학교 항공재료공학과
3인천대학교 신소재공학과
4대림대학 재료정보학과
Characteristics of Two-Step Plasma-Assisted Boronizing Process in an Atmosphere of BCl3-H2-Ar
Kee-Seok Nam, Gu-Hyun Lee, Pyung-Woo Shin1, Yo-Seung Song2, Bae-Yeon Kim3, Deuk-Yong Lee4
Surface Engineering Department, Korea Institute of Machinery and Materials
1Department of Metallurgy and Materials Engineering, Changwon National University
2Department of Materials Engineering, Hankuk Aviation University
3Department of Advanced Materials Engineering, University of Incheon
4Department of Materials Engineering, Daelim College of Technology
A two-step plasma-assisted boronizing process was carried out on the AISI 1045 steel substrate to reduce the pore density introduced by a conventional single plasma boronizing process. The specimens were plasma boronized for 1 h at $650^{circ}C$ and subsequently far 7 h at $800^{circ}C$ in an atmosphere of $BCl_3-H_2-Ar$. The boride layer thickness was parabolic in boronizing time, a high HV reading of 1540 was found up to the boride layer thickness of $25{mu}m$. It was found that the morphology of the boride layer prepared by the two-step boronizing process was changed from a columnar to a tooth-like structure and the pores in the borided steel were eliminated completely in comparison to those synthesized by the conventional single boronizing process, implying that it is highly applicable for enhancing the dense and compact coating properties of the low-alloy steel.
Key words: Boron trichloride, Plasma boronizing, Two-temperature-stage process, Pores
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