A novel approach to fabricate load-bearing Ti6Al4V-Barium titanate piezoelectric bone scaffolds by coupling electron beam melting and field-assisted sintering
A critical-size bone defect in load-bearing areas is a challenging clinical problem in orthopaedic surgery. Titanium alloy (Ti6Al4V) scaffolds have advantages because of their biomechanical stability but lack electrical activity, which hinders their further use. This work is focused on the fabricati...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2023-01-01
|
| Series: | Materials & Design |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0264127522010516 |
| _version_ | 1811175486424875008 |
|---|---|
| author | Abdullah Riaz Christian Polley Henrik Lund Armin Springer Hermann Seitz |
| author_facet | Abdullah Riaz Christian Polley Henrik Lund Armin Springer Hermann Seitz |
| author_sort | Abdullah Riaz |
| collection | DOAJ |
| description | A critical-size bone defect in load-bearing areas is a challenging clinical problem in orthopaedic surgery. Titanium alloy (Ti6Al4V) scaffolds have advantages because of their biomechanical stability but lack electrical activity, which hinders their further use. This work is focused on the fabrication of Ti6Al4V-Barium Titanate (BaTiO3) bulk composite scaffolds to combine the biomechanical stability of Ti6Al4V with electrical activity through BaTiO3. For the first time, a hollow cylindrical Ti6Al4V is additively manufactured by electron beam melting and combined with piezoelectric BaTiO3 powder for joint processing in field-assisted sintering. Scanning electron microscope images on the interface of the Ti6Al4V-BaTiO3 composite scaffold showed that after sintering, the Ti6Al4V lattice structure bounded with BaTiO3 matrix without its major deformation. The Ti6Al4V-BaTiO3 scaffold had average piezoelectric constants of (0.63 ± 0.12) pC/N directly after sintering due to partial dipole alignment of the BaTiO3 tetragonal phase, which increased to (4.92 ± 0.75) pC/N after a successful corona poling. Moreover, the nanoindentation values of Ti6Al4V exhibited an average hardness and Young’s modulus of (5.9 ± 0.9) GPa and (130 ± 14) GPa, and BaTiO3 showed (4.0 ± 0.6) GPa and (106 ± 10) GPa, respectively. It reveals that the Ti6Al4V is the harder and stiffer part in the Ti6Al4V-BaTiO3 composite scaffold. Such a scaffold has the potential to treat critical-size bone defects in load-bearing areas and guide tissue regeneration by physical stimulation. |
| first_indexed | 2024-04-10T19:37:47Z |
| format | Article |
| id | doaj.art-8cc3a127174c4fbe808c159a56470ed2 |
| institution | Directory Open Access Journal |
| issn | 0264-1275 |
| language | English |
| last_indexed | 2024-04-10T19:37:47Z |
| publishDate | 2023-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Materials & Design |
| spelling | doaj.art-8cc3a127174c4fbe808c159a56470ed22023-01-30T04:11:44ZengElsevierMaterials & Design0264-12752023-01-01225111428A novel approach to fabricate load-bearing Ti6Al4V-Barium titanate piezoelectric bone scaffolds by coupling electron beam melting and field-assisted sinteringAbdullah Riaz0Christian Polley1Henrik Lund2Armin Springer3Hermann Seitz4University of Rostock, Microfluidics, Faculty of Mechanical Engineering and Marine Technology, Justus-von-Liebig-Weg 6, 18059 Rostock, Germany; Corresponding author.University of Rostock, Microfluidics, Faculty of Mechanical Engineering and Marine Technology, Justus-von-Liebig-Weg 6, 18059 Rostock, GermanyLeibniz Institute for Catalysis, Albert-Einstein-Straße 29a, 18059 Rostock, GermanyUniversity Medical Center Rostock, Medical Biology and Electron Microscopy Centre, Strempel-Str. 14, 18057 Rostock, GermanyUniversity of Rostock, Microfluidics, Faculty of Mechanical Engineering and Marine Technology, Justus-von-Liebig-Weg 6, 18059 Rostock, Germany; University of Rostock, Department of Life, Light and Matter, Albert Einstein-Str. 25, 18059 Rostock, GermanyA critical-size bone defect in load-bearing areas is a challenging clinical problem in orthopaedic surgery. Titanium alloy (Ti6Al4V) scaffolds have advantages because of their biomechanical stability but lack electrical activity, which hinders their further use. This work is focused on the fabrication of Ti6Al4V-Barium Titanate (BaTiO3) bulk composite scaffolds to combine the biomechanical stability of Ti6Al4V with electrical activity through BaTiO3. For the first time, a hollow cylindrical Ti6Al4V is additively manufactured by electron beam melting and combined with piezoelectric BaTiO3 powder for joint processing in field-assisted sintering. Scanning electron microscope images on the interface of the Ti6Al4V-BaTiO3 composite scaffold showed that after sintering, the Ti6Al4V lattice structure bounded with BaTiO3 matrix without its major deformation. The Ti6Al4V-BaTiO3 scaffold had average piezoelectric constants of (0.63 ± 0.12) pC/N directly after sintering due to partial dipole alignment of the BaTiO3 tetragonal phase, which increased to (4.92 ± 0.75) pC/N after a successful corona poling. Moreover, the nanoindentation values of Ti6Al4V exhibited an average hardness and Young’s modulus of (5.9 ± 0.9) GPa and (130 ± 14) GPa, and BaTiO3 showed (4.0 ± 0.6) GPa and (106 ± 10) GPa, respectively. It reveals that the Ti6Al4V is the harder and stiffer part in the Ti6Al4V-BaTiO3 composite scaffold. Such a scaffold has the potential to treat critical-size bone defects in load-bearing areas and guide tissue regeneration by physical stimulation.http://www.sciencedirect.com/science/article/pii/S0264127522010516Electron beam meltingField-assisted sinteringLoad-bearing scaffoldCorona polingMetal-ceramic compositePiezoelectric effect |
| spellingShingle | Abdullah Riaz Christian Polley Henrik Lund Armin Springer Hermann Seitz A novel approach to fabricate load-bearing Ti6Al4V-Barium titanate piezoelectric bone scaffolds by coupling electron beam melting and field-assisted sintering Materials & Design Electron beam melting Field-assisted sintering Load-bearing scaffold Corona poling Metal-ceramic composite Piezoelectric effect |
| title | A novel approach to fabricate load-bearing Ti6Al4V-Barium titanate piezoelectric bone scaffolds by coupling electron beam melting and field-assisted sintering |
| title_full | A novel approach to fabricate load-bearing Ti6Al4V-Barium titanate piezoelectric bone scaffolds by coupling electron beam melting and field-assisted sintering |
| title_fullStr | A novel approach to fabricate load-bearing Ti6Al4V-Barium titanate piezoelectric bone scaffolds by coupling electron beam melting and field-assisted sintering |
| title_full_unstemmed | A novel approach to fabricate load-bearing Ti6Al4V-Barium titanate piezoelectric bone scaffolds by coupling electron beam melting and field-assisted sintering |
| title_short | A novel approach to fabricate load-bearing Ti6Al4V-Barium titanate piezoelectric bone scaffolds by coupling electron beam melting and field-assisted sintering |
| title_sort | novel approach to fabricate load bearing ti6al4v barium titanate piezoelectric bone scaffolds by coupling electron beam melting and field assisted sintering |
| topic | Electron beam melting Field-assisted sintering Load-bearing scaffold Corona poling Metal-ceramic composite Piezoelectric effect |
| url | http://www.sciencedirect.com/science/article/pii/S0264127522010516 |
| work_keys_str_mv | AT abdullahriaz anovelapproachtofabricateloadbearingti6al4vbariumtitanatepiezoelectricbonescaffoldsbycouplingelectronbeammeltingandfieldassistedsintering AT christianpolley anovelapproachtofabricateloadbearingti6al4vbariumtitanatepiezoelectricbonescaffoldsbycouplingelectronbeammeltingandfieldassistedsintering AT henriklund anovelapproachtofabricateloadbearingti6al4vbariumtitanatepiezoelectricbonescaffoldsbycouplingelectronbeammeltingandfieldassistedsintering AT arminspringer anovelapproachtofabricateloadbearingti6al4vbariumtitanatepiezoelectricbonescaffoldsbycouplingelectronbeammeltingandfieldassistedsintering AT hermannseitz anovelapproachtofabricateloadbearingti6al4vbariumtitanatepiezoelectricbonescaffoldsbycouplingelectronbeammeltingandfieldassistedsintering AT abdullahriaz novelapproachtofabricateloadbearingti6al4vbariumtitanatepiezoelectricbonescaffoldsbycouplingelectronbeammeltingandfieldassistedsintering AT christianpolley novelapproachtofabricateloadbearingti6al4vbariumtitanatepiezoelectricbonescaffoldsbycouplingelectronbeammeltingandfieldassistedsintering AT henriklund novelapproachtofabricateloadbearingti6al4vbariumtitanatepiezoelectricbonescaffoldsbycouplingelectronbeammeltingandfieldassistedsintering AT arminspringer novelapproachtofabricateloadbearingti6al4vbariumtitanatepiezoelectricbonescaffoldsbycouplingelectronbeammeltingandfieldassistedsintering AT hermannseitz novelapproachtofabricateloadbearingti6al4vbariumtitanatepiezoelectricbonescaffoldsbycouplingelectronbeammeltingandfieldassistedsintering |