Magnetocaloric Heat Exchangers by Laser Powder Bed Fusion

Sandra Wieland; Christina  Breitzke; Kristina Navickaitė; Jierong Liang

Magnetocaloric Heat Exchangers by Laser Powder Bed Fusion

Sandra Wieland
, Christina Breitzke
, Kristina Navickaitė
, Jierong Liang

Fraunhofer Institute for Manufacturing Engineering and Automation
Fraunhofer Institute for Manufacturing Technology and Advanced Materials

Research output: Contribution to conference › Paper › Research › peer-review

Abstract

Magnetocaloric materials, which change their temperature when brought into a changing magnetic field, have the potential to enable innovative cooling and heating technologies. To attain highly efficient systems, fast and high heat transfer from the magnetocaloric material has to be achieved. It was shown that by Laser Powder Bed Fusion (LPBF), it is possible to shape brittle intermetallic La(Fe,Si)₁₃-based alloys to microchannel- or plate-like-structures with a minimum wall thickness of 300 μm. Additionally, the refined microstructure resulting from the LPBF process enables shortening the heat treatment time to optimize the magnetocaloric properties, and mixing La(Fe,Si)13 and LaCe(Fe,Mn,Si)₁₃ powder for the LPBF process is an effective way to adjust the composition and hence the temperature of maximum magnetocaloric effect. Results on the magnetocaloric properties as well as considerations regarding the optimization of the heat exchanger geometry and the influence of the surface roughness will be presented.

Original language	English
Publication date	2020
Number of pages	6
Publication status	Published - 2020
Event	Euro PM2020 - Virtual conference Duration: 5 Oct 2020 → 7 Oct 2020

Conference

Conference	Euro PM2020
Location	Virtual conference
Period	05/10/2020 → 07/10/2020

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title = "Magnetocaloric Heat Exchangers by Laser Powder Bed Fusion",

abstract = "Magnetocaloric materials, which change their temperature when brought into a changing magnetic field, have the potential to enable innovative cooling and heating technologies. To attain highly efficient systems, fast and high heat transfer from the magnetocaloric material has to be achieved. It was shown that by Laser Powder Bed Fusion (LPBF), it is possible to shape brittle intermetallic La(Fe,Si)13-based alloys to microchannel- or plate-like-structures with a minimum wall thickness of 300 μm. Additionally, the refined microstructure resulting from the LPBF process enables shortening the heat treatment time to optimize the magnetocaloric properties, and mixing La(Fe,Si)13 and LaCe(Fe,Mn,Si)13 powder for the LPBF process is an effective way to adjust the composition and hence the temperature of maximum magnetocaloric effect. Results on the magnetocaloric properties as well as considerations regarding the optimization of the heat exchanger geometry and the influence of the surface roughness will be presented.",

author = "Sandra Wieland and Christina Breitzke and Kristina Navickaitė and Jierong Liang",

year = "2020",

language = "English",

note = "Euro PM2020 ; Conference date: 05-10-2020 Through 07-10-2020",

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TY - CONF

T1 - Magnetocaloric Heat Exchangers by Laser Powder Bed Fusion

AU - Wieland, Sandra

AU - Breitzke, Christina

AU - Navickaitė, Kristina

AU - Liang, Jierong

PY - 2020

Y1 - 2020

N2 - Magnetocaloric materials, which change their temperature when brought into a changing magnetic field, have the potential to enable innovative cooling and heating technologies. To attain highly efficient systems, fast and high heat transfer from the magnetocaloric material has to be achieved. It was shown that by Laser Powder Bed Fusion (LPBF), it is possible to shape brittle intermetallic La(Fe,Si)13-based alloys to microchannel- or plate-like-structures with a minimum wall thickness of 300 μm. Additionally, the refined microstructure resulting from the LPBF process enables shortening the heat treatment time to optimize the magnetocaloric properties, and mixing La(Fe,Si)13 and LaCe(Fe,Mn,Si)13 powder for the LPBF process is an effective way to adjust the composition and hence the temperature of maximum magnetocaloric effect. Results on the magnetocaloric properties as well as considerations regarding the optimization of the heat exchanger geometry and the influence of the surface roughness will be presented.

AB - Magnetocaloric materials, which change their temperature when brought into a changing magnetic field, have the potential to enable innovative cooling and heating technologies. To attain highly efficient systems, fast and high heat transfer from the magnetocaloric material has to be achieved. It was shown that by Laser Powder Bed Fusion (LPBF), it is possible to shape brittle intermetallic La(Fe,Si)13-based alloys to microchannel- or plate-like-structures with a minimum wall thickness of 300 μm. Additionally, the refined microstructure resulting from the LPBF process enables shortening the heat treatment time to optimize the magnetocaloric properties, and mixing La(Fe,Si)13 and LaCe(Fe,Mn,Si)13 powder for the LPBF process is an effective way to adjust the composition and hence the temperature of maximum magnetocaloric effect. Results on the magnetocaloric properties as well as considerations regarding the optimization of the heat exchanger geometry and the influence of the surface roughness will be presented.

M3 - Paper

T2 - Euro PM2020

Y2 - 5 October 2020 through 7 October 2020

ER -

Magnetocaloric Heat Exchangers by Laser Powder Bed Fusion

Abstract

Conference

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