Scaffold Manufacturing by 3D Printing: Cobalt Chrome - Hydroxyapatite Biocomposite

Location

CSU Ballroom

Start Date

10-4-2018 10:00 AM

End Date

10-4-2018 11:30 AM

Student's Major

Automotive and Manufacturing Engineering Technology

Student's College

Science, Engineering and Technology

Mentor's Name

Kuldeep Agarwal

Mentor's Department

Automotive and Manufacturing Engineering Technology

Description

Scaffolds are 3D biocompatible structures that mimic the extracellular matrix properties (mechanical support, cellular activity and protein production) of bones and provide place for cell attachment and bone tissue formation. Their performance depends on chemistry, pore size, pore volume, and mechanical strength. Recently, additive manufacturing (AM) has been used as a means to produce these scaffolds. This project explores a new biocomposite manufactured using Binder Jet AM process. Cobalt Chrome and hydroxyapatite are combined to form a composite and used in different volume fractions to produce parts with varying densities. Layer thickness, sintering time and sintering temperature are varied to study the effect of process parameters on the microstructure, dimensions and mechanical properties of the resulting structure. It is found that the resulting biocomposite can be tailored by varying the process to change its properties and mimic the properties of scaffolds in bone tissue applications. The Binder jet process involves multiple nozzles depositing very fine droplets of binder which interacts with the powder material. This interaction can affect the geometry and the resulting properties in multiple ways. This project explores this interaction and shows how this process can be used in the future of scaffold manufacturing.

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Apr 10th, 10:00 AM Apr 10th, 11:30 AM

Scaffold Manufacturing by 3D Printing: Cobalt Chrome - Hydroxyapatite Biocomposite

CSU Ballroom

Scaffolds are 3D biocompatible structures that mimic the extracellular matrix properties (mechanical support, cellular activity and protein production) of bones and provide place for cell attachment and bone tissue formation. Their performance depends on chemistry, pore size, pore volume, and mechanical strength. Recently, additive manufacturing (AM) has been used as a means to produce these scaffolds. This project explores a new biocomposite manufactured using Binder Jet AM process. Cobalt Chrome and hydroxyapatite are combined to form a composite and used in different volume fractions to produce parts with varying densities. Layer thickness, sintering time and sintering temperature are varied to study the effect of process parameters on the microstructure, dimensions and mechanical properties of the resulting structure. It is found that the resulting biocomposite can be tailored by varying the process to change its properties and mimic the properties of scaffolds in bone tissue applications. The Binder jet process involves multiple nozzles depositing very fine droplets of binder which interacts with the powder material. This interaction can affect the geometry and the resulting properties in multiple ways. This project explores this interaction and shows how this process can be used in the future of scaffold manufacturing.

Recommended Citation

Ruprecht, John. "Scaffold Manufacturing by 3D Printing: Cobalt Chrome - Hydroxyapatite Biocomposite." Undergraduate Research Symposium, Mankato, MN, April 10, 2018.
https://cornerstone.lib.mnsu.edu/urs/2018/poster-session-A/1