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CoCrWCu alloy with antibacterial activity fabricated by selective laser melting: Densification, mechanical properties and microstructural analysis
Lu, YJ; Ren, L; Wu, SQ; Yang, CG; Lin, WL; Xiao, SL; Yang, Y; Yang, K; Lin, JX; Lin, JX (reprint author), Chinese Acad Sci, Fujian Inst Res Struct Matter, 155 Yangqiao Rd West, Fuzhou, Fujian, Peoples R China.; Ren, L (reprint author), Chinese Acad Sci, Inst Met Res, 72 Wenhua Rd, Shenyang, Liaoning, Peoples R China.
2018-02-01
Source PublicationPOWDER TECHNOLOGY
ISSN0032-5910
Volume325Pages:289-300
AbstractIn the study, self-developed CoCrWCu gas-atomized powders with antibacterial activity were fabricated and used in selective laser melting (SLM). To determine whether a reliability of the SLMed CoCrWCu alloy for dental application could be obtained by using those powders, processing optimization was conducted to maximize density. Surface analysis and tensile tests were performed to verify an optimal processing parameter for fabrication of nearly full density alloy with few pores. Based on tailored parameter variation studies, a highly dense CoCrWCu alloy with 99.74% relative density could be fabricated at the energy input of 53.14 J/mm(3). The outcome from tensile test suggested that the SLMed CoCrWCu alloy met the standard of ISO 22764 for dental restorations. SEM observation showed that an extremely fine microstructure with cellular and columnar structures was obtained in the SLMed CoCrWCu alloys. As such, a large density of bar-like precipitates was found to exist, which Were confirmed to be sigma phase from the indexation of fast Fourier transform pattern. The preliminary antibacterial test indicated that the SLMed CoCrWCu alloy has an excellent antibacterial performance against E. coli. It was considered that the energy input of 53.14 J/min(3) was promising candidate for fabricating the dense CoCrWCu alloy with acceptable properties and part reliability. Also, this study can thus aid in a further improvement of CoCrWCu powders. (C) 2017 Elsevier B.V. All rights reserved.; In the study, self-developed CoCrWCu gas-atomized powders with antibacterial activity were fabricated and used in selective laser melting (SLM). To determine whether a reliability of the SLMed CoCrWCu alloy for dental application could be obtained by using those powders, processing optimization was conducted to maximize density. Surface analysis and tensile tests were performed to verify an optimal processing parameter for fabrication of nearly full density alloy with few pores. Based on tailored parameter variation studies, a highly dense CoCrWCu alloy with 99.74% relative density could be fabricated at the energy input of 53.14 J/mm(3). The outcome from tensile test suggested that the SLMed CoCrWCu alloy met the standard of ISO 22764 for dental restorations. SEM observation showed that an extremely fine microstructure with cellular and columnar structures was obtained in the SLMed CoCrWCu alloys. As such, a large density of bar-like precipitates was found to exist, which Were confirmed to be sigma phase from the indexation of fast Fourier transform pattern. The preliminary antibacterial test indicated that the SLMed CoCrWCu alloy has an excellent antibacterial performance against E. coli. It was considered that the energy input of 53.14 J/min(3) was promising candidate for fabricating the dense CoCrWCu alloy with acceptable properties and part reliability. Also, this study can thus aid in a further improvement of CoCrWCu powders. (C) 2017 Elsevier B.V. All rights reserved.
description.department[lu, yanjin ; wu, songquan ; lin, wenlie ; yang, yang ; lin, jinxin] chinese acad sci, fujian inst res struct matter, 155 yangqiao rd west, fuzhou, fujian, peoples r china ; [ren, ling ; yang, chunguang ; yang, ke] chinese acad sci, inst met res, 72 wenhua rd, shenyang, liaoning, peoples r china ; [lu, yanjin ; lin, jinxin] univ chinese acad sci, beijing 100049, peoples r china ; [xiao, suli] fujian med univ, teaching hosp, xiamen stomatol hosp, dept endodont, 1309 lvling rd, xiamen 361003, fujian, peoples r china
KeywordCr-mo Alloy Commercially Pure Titanium 316l Stainless-steel Heat-treatment Processing Parameters Dental Applications Behavior Transformation Strength Composites
Subject AreaEngineering, Chemical
Funding OrganizationNational Key RD Plan [2016YFC1100502]
Indexed BySCI
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/79540
Collection中国科学院金属研究所
Corresponding AuthorYang, Y; Lin, JX (reprint author), Chinese Acad Sci, Fujian Inst Res Struct Matter, 155 Yangqiao Rd West, Fuzhou, Fujian, Peoples R China.; Ren, L (reprint author), Chinese Acad Sci, Inst Met Res, 72 Wenhua Rd, Shenyang, Liaoning, Peoples R China.
Recommended Citation
GB/T 7714
Lu, YJ,Ren, L,Wu, SQ,et al. CoCrWCu alloy with antibacterial activity fabricated by selective laser melting: Densification, mechanical properties and microstructural analysis[J]. POWDER TECHNOLOGY,2018,325:289-300.
APA Lu, YJ.,Ren, L.,Wu, SQ.,Yang, CG.,Lin, WL.,...&Ren, L .(2018).CoCrWCu alloy with antibacterial activity fabricated by selective laser melting: Densification, mechanical properties and microstructural analysis.POWDER TECHNOLOGY,325,289-300.
MLA Lu, YJ,et al."CoCrWCu alloy with antibacterial activity fabricated by selective laser melting: Densification, mechanical properties and microstructural analysis".POWDER TECHNOLOGY 325(2018):289-300.
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