Advanced 3Y-TZP bioceramic doped with Al 2 O 3 and MnO 2 particles potentially for biomedical applications

Study on mechanical and degradation properties

Dinesh Ragurajan, Mohsen Golieskardi, Meenaloshini Satgunam, Md Enamul Hoque, Angela Min Hwei Ng, Mariyam Jameelah Ghazali, Ahmad Kamal Ariffin

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The effectiveness of Al 2 O 3 and MnO 2 in enhancing mechanical properties and retarding degradation of 3 mol% yttria stabilized tetragonal zirconia polycrystalline (3Y-TZP) ceramic samples was evaluated by pressureless sintering at temperatures ranging from 1250 °C to 1550 °C with standard holding time of 2 h. It was observed that the inclusion of Al 2 O 3 and MnO 2 into 3Y-TZP was beneficial for the improvement of mechanical properties and ageing resistance. The optimum amounts of dopants were determined to be of 0.6 wt% Al 2 O 3 and 0.4 wt% MnO 2 . Microstructural investigation revealed that at the same temperature, the tetragonal grain size was not influenced by the increase of dopant levels. With optimum dopants the 3Y-TZP ceramic (density 6.1 g/cm 3 ) samples demonstrated the Vickers hardness of 11.6 GPa, fracture toughness, K IC of 9.8 MPa m 1/2 , flexural strength of 900 MPa and Young's modulus of 210 GPa. Furthermore, the efficacy of the dopants (MnO 2 and Al 2 O 3 ) in retarding low-temperature degradation of 3Y-TZP ceramic during exposure in Ringer's solution at 37 °C was also evaluated. Overall, the degradation rate and weight loss of 0.6 wt% Al 2 O 3 and 0.4 wt% MnO 2 ceramic samples were 0.66% in 8 weeks as compared to the undoped samples. The 3Y-TZP bioceramic doped with Al 2 O 3 and MnO 2 could be a potential candidate material for biomedical applications (e.g. hip implants) due to its improved mechanical properties and superior ageing resistance.

Original languageEnglish
Pages (from-to)432-442
Number of pages11
JournalJournal of Materials Research and Technology
Volume7
Issue number4
DOIs
Publication statusPublished - 01 Jan 2018

Fingerprint

Bioceramics
Yttria stabilized zirconia
Degradation
Doping (additives)
Mechanical properties
Aging of materials
Vickers hardness
Bending strength
Temperature
Fracture toughness
Sintering
Elastic moduli
yttria stabilized tetragonal zirconia

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Biomaterials
  • Surfaces, Coatings and Films
  • Metals and Alloys

Cite this

Ragurajan, Dinesh ; Golieskardi, Mohsen ; Satgunam, Meenaloshini ; Hoque, Md Enamul ; Ng, Angela Min Hwei ; Ghazali, Mariyam Jameelah ; Ariffin, Ahmad Kamal. / Advanced 3Y-TZP bioceramic doped with Al 2 O 3 and MnO 2 particles potentially for biomedical applications : Study on mechanical and degradation properties. In: Journal of Materials Research and Technology. 2018 ; Vol. 7, No. 4. pp. 432-442.
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abstract = "The effectiveness of Al 2 O 3 and MnO 2 in enhancing mechanical properties and retarding degradation of 3 mol{\%} yttria stabilized tetragonal zirconia polycrystalline (3Y-TZP) ceramic samples was evaluated by pressureless sintering at temperatures ranging from 1250 °C to 1550 °C with standard holding time of 2 h. It was observed that the inclusion of Al 2 O 3 and MnO 2 into 3Y-TZP was beneficial for the improvement of mechanical properties and ageing resistance. The optimum amounts of dopants were determined to be of 0.6 wt{\%} Al 2 O 3 and 0.4 wt{\%} MnO 2 . Microstructural investigation revealed that at the same temperature, the tetragonal grain size was not influenced by the increase of dopant levels. With optimum dopants the 3Y-TZP ceramic (density 6.1 g/cm 3 ) samples demonstrated the Vickers hardness of 11.6 GPa, fracture toughness, K IC of 9.8 MPa m 1/2 , flexural strength of 900 MPa and Young's modulus of 210 GPa. Furthermore, the efficacy of the dopants (MnO 2 and Al 2 O 3 ) in retarding low-temperature degradation of 3Y-TZP ceramic during exposure in Ringer's solution at 37 °C was also evaluated. Overall, the degradation rate and weight loss of 0.6 wt{\%} Al 2 O 3 and 0.4 wt{\%} MnO 2 ceramic samples were 0.66{\%} in 8 weeks as compared to the undoped samples. The 3Y-TZP bioceramic doped with Al 2 O 3 and MnO 2 could be a potential candidate material for biomedical applications (e.g. hip implants) due to its improved mechanical properties and superior ageing resistance.",
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Advanced 3Y-TZP bioceramic doped with Al 2 O 3 and MnO 2 particles potentially for biomedical applications : Study on mechanical and degradation properties. / Ragurajan, Dinesh; Golieskardi, Mohsen; Satgunam, Meenaloshini; Hoque, Md Enamul; Ng, Angela Min Hwei; Ghazali, Mariyam Jameelah; Ariffin, Ahmad Kamal.

In: Journal of Materials Research and Technology, Vol. 7, No. 4, 01.01.2018, p. 432-442.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Advanced 3Y-TZP bioceramic doped with Al 2 O 3 and MnO 2 particles potentially for biomedical applications

T2 - Study on mechanical and degradation properties

AU - Ragurajan, Dinesh

AU - Golieskardi, Mohsen

AU - Satgunam, Meenaloshini

AU - Hoque, Md Enamul

AU - Ng, Angela Min Hwei

AU - Ghazali, Mariyam Jameelah

AU - Ariffin, Ahmad Kamal

PY - 2018/1/1

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N2 - The effectiveness of Al 2 O 3 and MnO 2 in enhancing mechanical properties and retarding degradation of 3 mol% yttria stabilized tetragonal zirconia polycrystalline (3Y-TZP) ceramic samples was evaluated by pressureless sintering at temperatures ranging from 1250 °C to 1550 °C with standard holding time of 2 h. It was observed that the inclusion of Al 2 O 3 and MnO 2 into 3Y-TZP was beneficial for the improvement of mechanical properties and ageing resistance. The optimum amounts of dopants were determined to be of 0.6 wt% Al 2 O 3 and 0.4 wt% MnO 2 . Microstructural investigation revealed that at the same temperature, the tetragonal grain size was not influenced by the increase of dopant levels. With optimum dopants the 3Y-TZP ceramic (density 6.1 g/cm 3 ) samples demonstrated the Vickers hardness of 11.6 GPa, fracture toughness, K IC of 9.8 MPa m 1/2 , flexural strength of 900 MPa and Young's modulus of 210 GPa. Furthermore, the efficacy of the dopants (MnO 2 and Al 2 O 3 ) in retarding low-temperature degradation of 3Y-TZP ceramic during exposure in Ringer's solution at 37 °C was also evaluated. Overall, the degradation rate and weight loss of 0.6 wt% Al 2 O 3 and 0.4 wt% MnO 2 ceramic samples were 0.66% in 8 weeks as compared to the undoped samples. The 3Y-TZP bioceramic doped with Al 2 O 3 and MnO 2 could be a potential candidate material for biomedical applications (e.g. hip implants) due to its improved mechanical properties and superior ageing resistance.

AB - The effectiveness of Al 2 O 3 and MnO 2 in enhancing mechanical properties and retarding degradation of 3 mol% yttria stabilized tetragonal zirconia polycrystalline (3Y-TZP) ceramic samples was evaluated by pressureless sintering at temperatures ranging from 1250 °C to 1550 °C with standard holding time of 2 h. It was observed that the inclusion of Al 2 O 3 and MnO 2 into 3Y-TZP was beneficial for the improvement of mechanical properties and ageing resistance. The optimum amounts of dopants were determined to be of 0.6 wt% Al 2 O 3 and 0.4 wt% MnO 2 . Microstructural investigation revealed that at the same temperature, the tetragonal grain size was not influenced by the increase of dopant levels. With optimum dopants the 3Y-TZP ceramic (density 6.1 g/cm 3 ) samples demonstrated the Vickers hardness of 11.6 GPa, fracture toughness, K IC of 9.8 MPa m 1/2 , flexural strength of 900 MPa and Young's modulus of 210 GPa. Furthermore, the efficacy of the dopants (MnO 2 and Al 2 O 3 ) in retarding low-temperature degradation of 3Y-TZP ceramic during exposure in Ringer's solution at 37 °C was also evaluated. Overall, the degradation rate and weight loss of 0.6 wt% Al 2 O 3 and 0.4 wt% MnO 2 ceramic samples were 0.66% in 8 weeks as compared to the undoped samples. The 3Y-TZP bioceramic doped with Al 2 O 3 and MnO 2 could be a potential candidate material for biomedical applications (e.g. hip implants) due to its improved mechanical properties and superior ageing resistance.

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