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Book cover for Progress in Additive Manufacturing 2020
ASTM Selected Technical Papers
Progress in Additive Manufacturing 2020Available to Purchase
By
Nima Shamsaei
Nima Shamsaei
Symposium Chair and STP Editor
1
Auburn University
,
Auburn, AL,
US
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Mohsen Seifi
Mohsen Seifi
Symposium Chair and STP Editor
2
ASTM International
,
Washington, DC,
US
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ISBN:
978-0-8031-7721-5
No. of Pages:
432
DOI:
https://doi.org/10.1520/STP1637-EB
Publisher:
ASTM International
Publication date:
2022
eBook Chapter

Fabrication of Complex Geometries of High-Purity Copper with Superior Thermal Performance Available to Purchase

By
Sarah Synnestvedt
Sarah Synnestvedt
1
Holo Inc.
,
39684 Eureka Dr., Newark, CA, 94560,
US
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,
Katherine Harry
Katherine Harry
1
Holo Inc.
,
39684 Eureka Dr., Newark, CA, 94560,
US
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,
Karthik Bodla
Karthik Bodla
1
Holo Inc.
,
39684 Eureka Dr., Newark, CA, 94560,
US
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,
Etienne Pelletier
Etienne Pelletier
2
5N Plus Inc.
,
4385 Garand St., Montreal, Quebec,
CA
H4R 2B4
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,
Arslane Bouchemit
Arslane Bouchemit
2
5N Plus Inc.
,
4385 Garand St., Montreal, Quebec,
CA
H4R 2B4
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,
Amir Nobari
Amir Nobari
2
5N Plus Inc.
,
4385 Garand St., Montreal, Quebec,
CA
H4R 2B4
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Doi:
https://doi.org/10.1520/STP163720200122
Page Count:
21
  • Published:
    2022

This technical paper outlines a digital light processing (DLP) technique that can produce geometrically complex, highly conductive, pure copper parts. By incorporating a high-purity, high-sphericity copper powder into the DLP feedstock and optimizing the DLP printing and sintering process parameters, parts made with this technique achieve electrical conductivities greater than 92% (International Annealed Copper Standard) and negative and positive feature sizes down to 100 µm. As demonstrated by computational fluid dynamics modeling, the resulting copper cold plates exhibit superior thermal performance with an additional 4°C of cooling compared to traditionally manufactured cold plates.

Keywords:
additive manufacturing, thermal management, copper, stereolithography, powder metallurgy

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