Wear and Surface Characterization of Boronized Pure Iron

Author:

Asthana Pranay1,Liang Hong1,Usta Metin2,Ucisik A. H.3

Affiliation:

1. Department of Mechanical Engineering, Texas A&M University, College Station, TX 77843

2. Department of Materials Science & Engineering, Gebze Institute of Technology, Gebze, Kocaeli 41400, Turkey

3. Institute of Biomedical Engineering, Bogazici University, Department of Prostheses, Materials, and Artificial Organs, 80815 Bebek/Istanbul, Turkey

Abstract

This research investigates the morphological nature and tribological behavior of boronized pure iron using experiments combined with theoretical analysis. Samples studied were 99.97% purity iron boronized for 4h at 800°C, 875°C and 950°C, respectively. Diffusion of the borided layer was analyzed by measuring the extent of penetration of the boride to sublayers as a function of boriding time and temperature. The distribution of alloying elements from surface to interior was determined by using rf-glow discharge optical emission spectrometry. It was found that boron concentrated in the layer and the diffusion of B atoms was deeper than the layer itself. In tribological tests, friction and wear behavior under dry rolling with sliding (pseudo-rolling) and dry pure sliding conditions was investigated. The wear experiments were conducted using a modified linear reciprocating tribometer. A scanning electron microscope and atomic force microscope were used for worn surface characterization. It was found that boronizing at 875°C exhibited the best wear resistance among the samples tested. Higher wear resistance was correlated with growth of boride crystals along stronger (002) orientation. Surface grain size distribution after the boriding process was identified as an important factor for wear resistance. Different fracture and wear modes were investigated. Analysis of the wear debris gave an insight into the operative wear mechanisms. This research is beneficial in optimizing the parameters of the boronizing process to achieve better wear resistance under different contact modes.

Publisher

ASME International

Subject

Surfaces, Coatings and Films,Surfaces and Interfaces,Mechanical Engineering,Mechanics of Materials

Reference28 articles.

1. Mechanism of Thermochemical Growth of Iron Borides on Iron;Martini;J. Mater. Sci.

2. The Characterization of Borided Pure Niobium;Usta;Surf. Coat. Technol.

3. The Characterization of Borided Pure Tungsten;Usta;Surf. Coat. Technol.

4. A Comparison of Mechanical Properties of Borides Formed on Pure Nb and W;Usta;Mater. Forum

5. Wear Behavior of Niobium Boride Coatings;Ingole;J. ASTM Int.

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3