Surface Hardening Mechanism for Metal Particles for Surface Treatment Applications

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Shot peening is a common surface modification process employed in aerospace, automotive, and biomedical industries, by introducing a compressive residual stress the service life of a part can be improved significantly. A problem inherent to shot peening is surface contamination caused by the deposition of the media. Researchers at Purdue University have developed a process to harden the surface of shot media through controlled oxidation at low temperatures, preventing the media from sintering. This technology can be used with commercially available powders and existing equipment.

-Avoids surface contamination
-No sintering occurs
-Hardens particulate materials

Potential Applications:
-Shot Peening
Jun 16, 2020
Utility Patent
United States
Jul 5, 2022

Jun 17, 2019
United States
Purdue Office of Technology Commercialization
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