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Home NEWS Science News Chemistry

Organic molecules on a metal surface… a machinist’s best friend

Bioengineer by Bioengineer
December 17, 2020
in Chemistry
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Credit: Purdue University/Erin Easterling

WEST LAFAYETTE, Ind. – How can you improve the cutting of “gummy” metals? Purdue University innovators have come up with an answer – and their findings may help in manufacturing products and reducing component failures.

The researchers previously showed that the application of a permanent marker or Sharpie, glue or adhesive film made it easier to cut metals such as aluminum, stainless steels, nickel, copper and tantalum for industrial applications. Marking the metal surface to be machined with ink or an adhesive dramatically reduced the force of cutting, leaving a clean cut in seconds. Now, they have discovered how these films produce the effect.

“We have found that you only need the organic film from the markers or glue to be one molecule thick for it to work,” said Srinivasan Chandrasekar, Purdue professor of industrial engineering. “This ultra-thin film helps achieve smoother, cleaner and faster cuts than current machining processes. It also reduces the cutting forces and energy, and improves the outcomes for manufacturing across industries such as biomedical, energy, defense and aerospace.”

The research is published in Science Advances. The study involves a collaboration between researchers at Purdue, Osaka University (Japan) and the Indian Institute of Science (India). The research is supported by the National Science Foundation and U.S. Department of Energy.

If a significant improvement can be made to the machinability of gummy metals or alloys – that is how well they cut, drill or grind – then there is potential to lower the cost of products, improve their performance or enable new and improved product designs.

The researchers found, using organic monolayer films created by molecular self-assembly, that the molecule chain length and its adsorption to the metal surface are key to realizing these improvements. By using the “right” organic molecules, the metal is locally embrittled resulting in improved machining.

“We are also learning through our discovery more about how environmental factors influence failure of metals,” said Anirudh Udupa, a lead author on the study and a researcher in Purdue’s School of Industrial Engineering. “As we decipher how the organic molecular films improve the machinability of these metals, the better also is our understanding of common environment-assisted failures in metals, such as stress-corrosion cracking, hydrogen embrittlement and liquid metal embrittlement.”

The Purdue innovators worked with the Purdue Research Foundation Office of Technology Commercialization to patent this technology.

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The researchers are looking for partners to continue developing their technology. For more information on licensing and other opportunities, contact OTC at [email protected] and mention track code 2019-CHAN-68634.

About Purdue Research Foundation Office of Technology Commercialization

The Purdue Research Foundation Office of Technology Commercialization operates one of the most comprehensive technology transfer programs among leading research universities in the U.S. Services provided by this office support the economic development initiatives of Purdue University and benefit the university’s academic activities through commercializing, licensing and protecting Purdue intellectual property. The office recently moved into the Convergence Center for Innovation and Collaboration in Discovery Park District, adjacent to the Purdue campus. In fiscal year 2020, the office reported 148 deals finalized with 225 technologies signed, 408 disclosures received and 180 issued U.S. patents. The office is managed by the Purdue Research Foundation, which received the 2019 Innovation and Economic Prosperity Universities Award for Place from the Association of Public and Land-grant Universities. In 2020, IPWatchdog Institute ranked Purdue third nationally in startup creation and in the top 20 for patents. The Purdue Research Foundation is a private, nonprofit foundation created to advance the mission of Purdue University. Contact [email protected] for more information.

About Purdue University

Purdue University is a top public research institution developing practical solutions to today’s toughest challenges. Ranked the No. 5 Most Innovative University in the United States by U.S. News & World Report, Purdue delivers world-changing research and out-of-this-world discovery. Committed to hands-on and online, real-world learning, Purdue offers a transformative education to all. Committed to affordability and accessibility, Purdue has frozen tuition and most fees at 2012-13 levels, enabling more students than ever to graduate debt-free. See how Purdue never stops in the persistent pursuit of the next giant leap at purdue.edu.

Writer: Chris Adam, [email protected]

Sources: Srinivasan Chandrasekar, 765-494-3623, [email protected]

Anirudh Udupa, [email protected]

Media Contact
Chris Adam
[email protected]

Related Journal Article

http://dx.doi.org/10.1126/sciadv.abc8900

Tags: Industrial Engineering/ChemistryMechanical EngineeringNanotechnology/MicromachinesResearch/DevelopmentTechnology TransferTechnology/Engineering/Computer Science
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