Achieving in-situ alloy-hardening core-shell structured carbonyl iron powders for magnetic abrasive finishing
Wensheng Li1,2; Jianjun Li2; Cheng B(成波)2; Xinjian Zhang2; Qiang Song2; Yu Wang2; Tao Zhang2; Uladzimir Seniuts3; Marat Belotsrkovsky3
2021-10
Source PublicationMaterials & Design
Volume212Pages:110198
Abstract

The finishing accuracy and efficiency of magnetic abrasive finishing (MAF) are mainly depending on magnetic abrasive powders (MAPs). A new kind of core–shell structured carbonyl iron powders (CI-MAPs) with a hard Fe/Al intermetallic shell for magnetic abrasive finishing is successfully synthesized by insitu alloy-hardening the surface of spherical carbonyl iron powders in this study. The feasibility of such an in-situ alloy-ardening strategy is theoretically designed according to the Fe/Al intermetallic compound formation chemical reaction using the Gibbs free energy principle and the TG-DSC testing, and thus the experimental thermodynamics temperature and time ranges of such chemical reactions are proposed. Experimental results shown that a densely zigzag-like uniform alloy-hardening layer with a thickness of about 11 μm, which are composed of Fe3Al, FeAl, and Fe2Al5 intermetallic compounds, was in-situ chemically synthesized on the surface of the spherical carbonyl Fe powders. The achieved core–shell structured powder is performed to finishing a Zirconium tube experimentally, and the roughness (Ra of the Zirconium tube is greatly improved from 0.361 μm to 0.085 μm by 3 MAF passes.

KeywordMagnetic abrasive finishing Carbonyl iron Fe/Al intermetallic core–shell In-situ alloy-hardening Surface roughness
Subject Area材料科学 ; 冶金工程技术 ; 核科学技术
MOST Discipline Catalogue工学 ; 工学::材料科学与工程(可授工学、理学学位) ; 工学::核科学与技术
DOIhttps://doi.org/10.1016/j.matdes.2021.110198
Indexed BySCI
Document Type期刊论文
Identifierhttp://ir.lut.edu.cn/handle/2XXMBERH/149454
Collection省部共建有色金属先进加工与再利用国家重点实验室
材料科学与工程学院
能源与动力工程学院
Corresponding AuthorJianjun Li; Cheng B(成波)
Affiliation1.School of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, Shandong, China
2.State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metal, Lanzhou University of Technology, Lanzhou 730050, Gansu, China
3.The Joint Institute of Mechanical Engineering, National Academy of Sciences of Belarus, Minsk, 220072 Minsk, Belarus
First Author AffilicationColl Mat Sci & Engn;  Lanzhou University of Technology
Corresponding Author AffilicationLanzhou University of Technology
First Signature AffilicationColl Mat Sci & Engn
Recommended Citation
GB/T 7714
Wensheng Li,Jianjun Li,Cheng B,et al. Achieving in-situ alloy-hardening core-shell structured carbonyl iron powders for magnetic abrasive finishing[J]. Materials & Design,2021,212:110198.
APA Wensheng Li.,Jianjun Li.,Cheng B.,Xinjian Zhang.,Qiang Song.,...&Marat Belotsrkovsky.(2021).Achieving in-situ alloy-hardening core-shell structured carbonyl iron powders for magnetic abrasive finishing.Materials & Design,212,110198.
MLA Wensheng Li,et al."Achieving in-situ alloy-hardening core-shell structured carbonyl iron powders for magnetic abrasive finishing".Materials & Design 212(2021):110198.
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