| Title: | Designing the microstructure of 3D printed Nd-Fe-B bonded magnets : doctoral disertation |
|---|
| Authors: | ID Hajra, Granit (Author)
ID Anžel, Ivan (Mentor) More about this mentor...  |
|---|
| Files: |  DOK_Hajra_Granit_2025.pdf (8,48 MB)
MD5: FB7A379B65640B489A5196B25E5C5C6C
|
|---|
| Language: | Slovenian |
|---|
| Work type: | Doctoral dissertation |
|---|
| Typology: | 2.08 - Doctoral Dissertation |
|---|
| Organization: | FS - Faculty of Mechanical Engineering
|
|---|
| Abstract: | This doctoral dissertation investigates the development of 3D printed polymer bonded magnets using a TPU-PA12 matrix bonded with Nd-Fe-B particles, aiming to achieve enhanced mechanical and magnetic properties for industrial applications. In the first phase, two composite formulations were examined: one containing atomized spherical powder (ASP) and the other incorporating melt-spun flakes (MSF). These particles were mixed with the TPU-PA12 matrix and then processed into filaments for 3D printing. Microstructural and performance analyses revealed that MSF offered better magnetic performance, while ASP exhibited higher porosity due to its internal structure. To overcome the limitations of single-particle systems, the second phase introduced a hybrid formulation combining both ASP and MSF particles. The hybrid approach improved particle distribution and interfacial adhesion and reduced porosity, resulting in better overall mechanical and magnetic behavior. Additionally, the influence of key 3D printing parameters—such as nozzle temperature, bed temperature, feed rate, and layer thickness—was systematically studied to optimize structural integrity and performance. This study offers valuable insights into the synergistic interaction between particle morphology, polymer matrix compatibility, and processing parameters. It provides a promising pathway for designing high-performance magnetic composites tailored for automotive, electronics, and renewable energy applications, thus contributing to advancements in additive manufacturing of functional polymer-bonded magnets. |
|---|
| Keywords: | magneti, vezani s polimeri, hibridni magneti Nd-Fe-B, matrica TPU-PA12, taljeno predeni kosmiči (MSF), atomiziran sferični prah (ASP), napredna proizvodnja vezanih magnetov, aditivna proizvodnja (3D-tiskanje), optimizacija procesnih parametrov, zasnova mikrostrukture, magnetne in mehanske lastnosti |
|---|
| Place of publishing: | Maribor |
|---|
| Place of performance: | Maribor |
|---|
| Publisher: | [G. Hajra] |
|---|
| Year of publishing: | 2025 |
|---|
| Number of pages: | XVI, 129 str. |
|---|
| PID: | 20.500.12556/DKUM-92949 |
|---|
| UDC: | [004.942+519.6]:66.132-77(043.3) |
|---|
| COBISS.SI-ID: | 260057859 |
|---|
| Publication date in DKUM: | 25.11.2025 |
|---|
| Views: | 198 |
|---|
| Downloads: | 18 |
|---|
| Metadata: |    |
|---|
| Categories: | KTFMB - FS
|
|---|
|
:
|
Copy citation |
|---|
| | | | Average score: | (0 votes) |
|---|
| Your score: | Voting is allowed only for logged in users. |
|---|
| Share: |  |
|---|
Hover the mouse pointer over a document title to show the abstract or click
on the title to get all document metadata. |
