Project Team
Students
Samuel Yount
Applied Materials
DuBois
Faculty Mentors
Ramakrishnan Rajagopalan
University Park
Department of Engineering
Project
https://sites.psu.edu/mcreu/files/formidable/2/2024-07-22/Poster-Presentation_MCREU_Yount_Ram.pdf
Project Video
Project Abstract
Cold sintering integrates warm compaction and surface modification of steel powders to enhance green strength of compacted parts. Surface-modified FLC-4608 compacts undergo cold sintering, resulting in the formation of a phosphate interphase between particles, which improves both green strength and density. Microstructural analysis reveals the precise chemical distribution of phosphate on the particles. The process demonstrates notable improvements in densification compared to conventional P/M methods under similar pressures. The strength of the compacts was sensitive to the weight percentages of phosphoric acid used during deposition. The strengthened compacts can be sinter hardened. This innovative approach opens promising new pathways for applying cold sintered assisted warm compaction in powdered metal technologies for green machining.
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