Effect of Co-Coated Al2O3 Composite Powders on LPBF-Manufactured CoCrMo Alloy

Author:

Zhang Lehui12,Liu Wei12ORCID,Cao Yu12,Sun Haoxin12,Xie Qiusheng12,Lai Junyun12,Bai Peikang12

Affiliation:

1. School of Materials Science and Engineering, North University of China, Taiyuan 030051, China

2. Shanxi Key Laboratory of Controlled Metal Solidification and Precision Manufacturing, Taiyuan 030051, China

Abstract

In this study, we systematically examined the influence mechanisms of introduced cobalt coated alumina (Co-coated Al2O3) particles on the microstructure and properties of cobalt-chromium-molybdenum (CoCrMo) alloy printed by Laser Powder Bed Fusion (LPBF). The Co-coated Al2O3 composite powders with different density of cobalt coating were prepared by varying Al2O3 load from 1 g/150 mL to 2 g/150 mL during the electroless plating process. Then they were mixed with CoCrMo powders in the proportion of 1 wt.% and formed standard samples by LPBF technology. The results showed that the addition of Co-coated Al2O3 particles improved the friction performance of CoCrMo alloys significantly. The wear depth of CCM@2Al2O3 was only 2.18 μm and the wear volume of it was about 10% of pure CoCrMo alloy. The CoCrMo alloy introduced the Co-coated Al2O3 particles with a 1 g/150 mL Al2O3 load formed metal-ceramic bonding interface, which solved the problem of poor wettability between Al2O3 and matrix in LPBF process. Such CoCrMo alloy exhibited excellent tensile properties and the mean microhardness of it reached 379.9 ± 3.5 HV0.5.

Funder

Special Project for Scientific and Technology Cooperation and Exchange of Shanxi Province

Primary Research and Development Plan of Shanxi Province

Publisher

MDPI AG

Subject

General Materials Science,Metals and Alloys

Reference50 articles.

1. Wang, J.H., Ren, J., Liu, W., Wu, X.Y., Gao, M.X., and Bai, P.K. (2018). Effect of Selective Laser Melting Process Parameters on Microstructure and Properties of Co-Cr Alloy. Materials, 11.

2. Localised electrochemical processes on laser powder bed fused 316 stainless steel with various heat treatments in high-temperature water;Que;Addit. Manuf.,2022

3. Stress and deformation evaluations of scanning strategy effect in selective laser melting;Cheng;Addit. Manuf.,2016

4. Effect of heat-treatment temperature on microstructures and mechanical properties of Co–Cr–Mo alloys fabricated by selective laser melting;Kajima;Mater. Sci. Eng. A,2018

5. Selective laser melting of biocompatible metals for rapid manufacturing of medical parts;Vandenbroucke;Rapid Prototyp. J.,2007

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