Laser-Induced Tar-Mediated Sintering of Metals and Refractory Carbides in Air
Refractory metals and their carbides possess extraordinary chemical and temperature resilience and exceptional mechanical strength. Yet, they are notoriously difficult to employ in additive manufacturing, due to the high temperatures needed for processing. State of the art approaches to manufacture...
| Main Authors: | , , , , , , |
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| Other Authors: | |
| Format: | Article |
| Language: | English |
| Published: |
American Chemical Society (ACS)
2021
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| Online Access: | https://hdl.handle.net/1721.1/135476 |
| _version_ | 1811076608590610432 |
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| author | Zang, Xining Tai, Kiera Y Jian, Cuiying Shou, Wan Matusik, Wojciech Ferralis, Nicola Grossman, Jeffrey C |
| author2 | Massachusetts Institute of Technology. Department of Materials Science and Engineering |
| author_facet | Massachusetts Institute of Technology. Department of Materials Science and Engineering Zang, Xining Tai, Kiera Y Jian, Cuiying Shou, Wan Matusik, Wojciech Ferralis, Nicola Grossman, Jeffrey C |
| author_sort | Zang, Xining |
| collection | MIT |
| description | Refractory metals and their carbides possess extraordinary chemical and temperature resilience and exceptional mechanical strength. Yet, they are notoriously difficult to employ in additive manufacturing, due to the high temperatures needed for processing. State of the art approaches to manufacture these materials generally require either a high-energy laser or electron beam as well as ventilation to protect the metal powder from combustion. Here, we present a versatile manufacturing process that utilizes tar as both a light absorber and antioxidant binder to sinter thin films of aluminum, copper, nickel, molybdenum, and tungsten powder using a low power (<2W) CO2 laser in air. Films of sintered Al/Cu/Ni metals have sheet resistances of ∼10-1 ohm/sq, while laser-sintered Mo/W-tar thin films form carbide phases. Several devices are demonstrated, including laser-sintered porous copper with a stable response to large strain (3.0) after 150 cycles, and a laserprocessed Mo/MoC(1-x) filament that reaches T ∼1000 °C in open air at 12 V. These results show that tar-mediated laser sintering represents a possible low energy, cost-effective route for engineering refractory materials and one that can easily be extended to additive manufacturing processes. |
| first_indexed | 2024-09-23T10:24:51Z |
| format | Article |
| id | mit-1721.1/135476 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T10:24:51Z |
| publishDate | 2021 |
| publisher | American Chemical Society (ACS) |
| record_format | dspace |
| spelling | mit-1721.1/1354762023-03-01T19:36:11Z Laser-Induced Tar-Mediated Sintering of Metals and Refractory Carbides in Air Zang, Xining Tai, Kiera Y Jian, Cuiying Shou, Wan Matusik, Wojciech Ferralis, Nicola Grossman, Jeffrey C Massachusetts Institute of Technology. Department of Materials Science and Engineering Massachusetts Institute of Technology. Computer Science and Artificial Intelligence Laboratory Refractory metals and their carbides possess extraordinary chemical and temperature resilience and exceptional mechanical strength. Yet, they are notoriously difficult to employ in additive manufacturing, due to the high temperatures needed for processing. State of the art approaches to manufacture these materials generally require either a high-energy laser or electron beam as well as ventilation to protect the metal powder from combustion. Here, we present a versatile manufacturing process that utilizes tar as both a light absorber and antioxidant binder to sinter thin films of aluminum, copper, nickel, molybdenum, and tungsten powder using a low power (<2W) CO2 laser in air. Films of sintered Al/Cu/Ni metals have sheet resistances of ∼10-1 ohm/sq, while laser-sintered Mo/W-tar thin films form carbide phases. Several devices are demonstrated, including laser-sintered porous copper with a stable response to large strain (3.0) after 150 cycles, and a laserprocessed Mo/MoC(1-x) filament that reaches T ∼1000 °C in open air at 12 V. These results show that tar-mediated laser sintering represents a possible low energy, cost-effective route for engineering refractory materials and one that can easily be extended to additive manufacturing processes. 2021-10-27T20:23:36Z 2021-10-27T20:23:36Z 2020 2021-02-03T15:37:43Z Article http://purl.org/eprint/type/JournalArticle https://hdl.handle.net/1721.1/135476 en 10.1021/ACSNANO.0C04295 ACS Nano Creative Commons Attribution-Noncommercial-Share Alike http://creativecommons.org/licenses/by-nc-sa/4.0/ application/pdf American Chemical Society (ACS) MIT web domain |
| spellingShingle | Zang, Xining Tai, Kiera Y Jian, Cuiying Shou, Wan Matusik, Wojciech Ferralis, Nicola Grossman, Jeffrey C Laser-Induced Tar-Mediated Sintering of Metals and Refractory Carbides in Air |
| title | Laser-Induced Tar-Mediated Sintering of Metals and Refractory Carbides in Air |
| title_full | Laser-Induced Tar-Mediated Sintering of Metals and Refractory Carbides in Air |
| title_fullStr | Laser-Induced Tar-Mediated Sintering of Metals and Refractory Carbides in Air |
| title_full_unstemmed | Laser-Induced Tar-Mediated Sintering of Metals and Refractory Carbides in Air |
| title_short | Laser-Induced Tar-Mediated Sintering of Metals and Refractory Carbides in Air |
| title_sort | laser induced tar mediated sintering of metals and refractory carbides in air |
| url | https://hdl.handle.net/1721.1/135476 |
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