Influence of polymer on the surface quality and microstructure in a novel additive manufacturing method using metal paste
•Polymer-containing metal paste was used in a new additive manufacturing technology.•0.5–1% polyvinyl alcohol produced a smoother surface both before/after laser melting.•Possible roles of the polymer during deposition and melting are discussed. A new additive manufacturing method using metal paste...
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| Published in | Materials letters Vol. 352; p. 135096 |
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| Main Authors | , , |
| Format | Journal Article |
| Language | English |
| Published |
Elsevier B.V
01.12.2023
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| Subjects | |
| Online Access | Get full text |
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| Abstract | •Polymer-containing metal paste was used in a new additive manufacturing technology.•0.5–1% polyvinyl alcohol produced a smoother surface both before/after laser melting.•Possible roles of the polymer during deposition and melting are discussed.
A new additive manufacturing method using metal paste was developed, in order to reduce waste caused by powder recycling in conventional powder bed fusion and maintain a high density in the fabricated parts. The paste was composed of metal powder, polymer particles, and a volatile solvent. Experiments were conducted to investigate the influence of a low polymer content on the paste during processing, surface topology before and after melting, and microstructure of the single-layer samples. The results showed that polymer addition could prevent the formation of powder clots by improving homogeneity of the metal paste and suppressing defect generation. The polymer also led to a smoother surface by reducing the spatter size. Finer grains were observed in the sample produced at higher polymer content. |
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| AbstractList | •Polymer-containing metal paste was used in a new additive manufacturing technology.•0.5–1% polyvinyl alcohol produced a smoother surface both before/after laser melting.•Possible roles of the polymer during deposition and melting are discussed.
A new additive manufacturing method using metal paste was developed, in order to reduce waste caused by powder recycling in conventional powder bed fusion and maintain a high density in the fabricated parts. The paste was composed of metal powder, polymer particles, and a volatile solvent. Experiments were conducted to investigate the influence of a low polymer content on the paste during processing, surface topology before and after melting, and microstructure of the single-layer samples. The results showed that polymer addition could prevent the formation of powder clots by improving homogeneity of the metal paste and suppressing defect generation. The polymer also led to a smoother surface by reducing the spatter size. Finer grains were observed in the sample produced at higher polymer content. |
| ArticleNumber | 135096 |
| Author | Heng, Weicheng Aoyagi, Kenta Chiba, Akihiko |
| Author_xml | – sequence: 1 givenname: Weicheng orcidid: 0009-0009-9569-3105 surname: Heng fullname: Heng, Weicheng organization: Department of Materials Processing, Graduate School of Engineering, Tohoku University, 6-6-11 Aoba, Aramaki, Aoba-ku, Sendai 980-8579, Japan – sequence: 2 givenname: Kenta orcidid: 0000-0002-3371-1795 surname: Aoyagi fullname: Aoyagi, Kenta email: kenta.aoyagi.e7@tohoku.ac.jp organization: Institute for Materials Research, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan – sequence: 3 givenname: Akihiko surname: Chiba fullname: Chiba, Akihiko organization: Institute for Materials Research, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan |
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| Cites_doi | 10.1021/ef010082s 10.1002/app.31677 10.1007/s11664-014-3601-8 10.1016/S1468-6996(01)00047-X 10.1007/s40964-019-00078-6 10.3390/ma13143158 10.1016/j.powtec.2018.11.072 |
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| References | Vock, Klöden, Kirchner, Weißgärber, Kieback (b0005) 2019; 4 Cano, Lube, Huber, Gallego, Naranjo, Berges, Schuschnigg, Herranz, Kukla, Holzer, Gonzalez-Gutierrez (b0020) 2020; 13 Gao, Yang, He, Yang (b0040) 2009; 116 Peng, Kellens, Tang, Chen, Chen (b0010) 2018; 21 Meier, Weissbach, Weinberg, Wall, Hart (b0035) 2019; 343 Thompson, Gonzalez-Gutierrez, Kukla, Felfer (b0025) 2019; 30 Kurz, Bezençon, Gäumann (b0050) 2001; 2 Shie, Chen, Chang, Lin, Lee, Wu (b0045) 2002; 16 Popov, Katz-Demyanetz, Garkun, Bamberger (b0015) 2018; 22 Hong, Sanchez, Du, Kim (b0030) 2015; 44 Popov (10.1016/j.matlet.2023.135096_b0015) 2018; 22 Hong (10.1016/j.matlet.2023.135096_b0030) 2015; 44 Shie (10.1016/j.matlet.2023.135096_b0045) 2002; 16 Meier (10.1016/j.matlet.2023.135096_b0035) 2019; 343 Kurz (10.1016/j.matlet.2023.135096_b0050) 2001; 2 Gao (10.1016/j.matlet.2023.135096_b0040) 2009; 116 Thompson (10.1016/j.matlet.2023.135096_b0025) 2019; 30 Vock (10.1016/j.matlet.2023.135096_b0005) 2019; 4 Peng (10.1016/j.matlet.2023.135096_b0010) 2018; 21 Cano (10.1016/j.matlet.2023.135096_b0020) 2020; 13 |
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| Title | Influence of polymer on the surface quality and microstructure in a novel additive manufacturing method using metal paste |
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