Mechanical properties and in vitro bioactivity of silicon nitride ceramics with SiO 2 , CaO , and MgO additions

2021 ◽  
Author(s):  
Celso Ricardo Sona Filho ◽  
Flávio Machado de Souza Carvalho ◽  
Cecilia Chaves Guedes‐Silva
Keyword(s):  
Mechanical Properties ◽  
Silicon Nitride ◽  
In Vitro Bioactivity ◽  
Nitride Ceramics

scholarly journals Microstructure, Mechanical Properties and in vitro Biological Behavior of Silicon Nitride Ceramics

2018 ◽  
Vol 21 (6) ◽  
Author(s):  
Cecilia Chaves Guedes-Silva ◽  
Andrea Cecilia Dorion Rodas ◽  
Antonio Carlos Silva ◽  
Christiane Ribeiro ◽  
Flávio Machado de Souza Carvalho ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Silicon Nitride ◽  
Biological Behavior ◽  
Nitride Ceramics

Mixed phase bioceramics in the CaMgSi2O6 – MoO3 system: Mechanical properties and in-vitro bioactivity

2021 ◽  
Author(s):  
Wen-Fan Chen ◽  
Yu-Sheng Tseng ◽  
Yu-Man Chang ◽  
Ji Zhang ◽  
Yun-Han Su ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Mixed Phase ◽  
In Vitro Bioactivity

Mechanical properties, corrosion behavior and in-vitro bioactivity of nanostructured Pd/PdO coating on Ti–6Al–7Nb implant

2016 ◽  
Vol 103 ◽  
pp. 10-24 ◽  
Author(s):  
A.R. Rafieerad ◽  
A.R. Bushroa ◽  
B. Nasiri-Tabrizi ◽  
J. Vadivelu ◽  
S. Baradaran ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Corrosion Behavior ◽  
In Vitro Bioactivity

Effects of Sintering Additives on the Microstructure and Mechanical Properties of Silicon Nitride Ceramics by GPS

2010 ◽  
Vol 105-106 ◽  
pp. 27-30 ◽  
Author(s):  
Wei Ru Zhang ◽  
Feng Sun ◽  
Ting Yan Tian ◽  
Xiang Hong Teng ◽  
Min Chao Ru ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Fracture Toughness ◽  
Phase Transformation ◽  
Silicon Nitride ◽  
Porous Silicon ◽  
Flexural Strength ◽  
Relative Density ◽  
Sintering Additives ◽  
Microstructure And Mechanical Properties ◽  
Nitride Ceramics

Silicon nitride ceramics were prepared by gas pressure sintering (GPS) with different sintering additives, including La2O3, Sm2O3 and Al2O3. Effect of sintering additives on the phase-transformation, microstructure and mechanical properties of porous silicon nitride ceramics was investigated. The results show that the reaction of sintering additives each other and with SiO2 had key effects on the phase-transformation, grain growing and grain boundaries. With 9MPa N2 atmosphere pressure, holding 1h at 1850°C, adding 10wt% one of the La2O3, Sm2O3, Al2O3, porous silicon nitride was prepared and the relative density was 78%, 72%, 85% respectively. The flexural strength was less than 500MPa, and the fracture toughness was less than 4.8MPam1/2. Dropping compounds sintering additives, such as La2O3+Al2O3, Sm2O3+Al2O3 effectively improves the sintering and mechanical properties. The relative density was 99.2% and 98.7% with 10wt% compounds sintering additives. The grain ratio of length to diameter was up to 1:8. The flexural strength was more than 900MPa, and the fracture toughness was more than 8.9MPam1/2.

scholarly journals The effect of calcinated hydroxyapatite and magnesium doped hydroxyapatite as fillers on the mechanical properties of a model BisGMA/TEGDMA dental composite initially and after aging

10.30544/403 ◽  
2018 ◽  
Vol 24 (4) ◽  
Author(s):  
Tamara Matic ◽  
Maja Ležaja Zebić ◽  
Ivana Cvijović-Alagić ◽  
Vesna Miletić ◽  
Rada Petrović ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Body Fluid ◽  
Control Sample ◽  
Dental Composite ◽  
In Vitro Bioactivity ◽  
Significant Difference ◽  
Nanosized Hydroxyapatite ◽  
Glass Fillers ◽  
Mg Doped

The aim of this study was to investigate the possibility of modifying model BisGMA/TEGDMA dental composite by substituting 10 wt. % of conventional glass fillers with bioactive fillers based on calcinated nanosized hydroxyapatite (HAp) and Mg doped hydroxyapatite (Mg-HAp). HAp and Mg-HAp powders were synthesized hydrothermally. Mechanical properties: hardness by Vickers (HV) and flexural strength (Fs) were tested initially and after being stored for 28 days in simulated body fluid (SBF). The experimental composites with HAp and Mg-HAp particles showed no statistically significant difference in HV compared to the control (p>0.05) either initially or after storage. Although mean Fs values of modified composites tested initially were lower (62 MPa) than those of the control (72 MPa), after 28 days of storage in SBF Fs values were greater for modified composites (42 MPa control sample, 48 MPa HAp and Mg-HAp samples). In vitro bioactivity of BisGMA/TEGDMA composites with HAp and Mg-HAp particles after 28 days in SBF was not detected. Keywords: hydroxyapatite; magnesium; dental composite; mechanical properties;

Development of High Performance Silicon Nitride Ceramics and their Applications

1992 ◽  
Vol 287 ◽  
Author(s):  
Yo Tajima
Keyword(s):  
Mechanical Properties ◽  
Silicon Nitride ◽  
High Performance ◽  
Future Prospect ◽  
Cutting Tools ◽  
Sintering Process ◽  
Sintering Additives ◽  
Nitride Ceramics ◽  
Engine Components

ABSTRACTProgress in sintering process and improvement of mechanical properties of silicon nitride ceramics are reviewed. Emphases are placed on contributions of advanced sintering techniques and better understanding of sintering additives and microstructure-properties relations. Current applications as engine components and cutting tools are described, and future prospect is considered.

Fabrication and mechanical properties of boron nitride nanotube reinforced silicon nitride ceramics

2018 ◽  
Vol 44 (6) ◽  
pp. 6456-6460 ◽  
Author(s):  
Tianfeng Li ◽  
Yongjun Chen ◽  
Wei Li ◽  
Jianbao Li ◽  
Lijie Luo ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Silicon Nitride ◽  
Boron Nitride ◽  
Boron Nitride Nanotube ◽  
Nitride Ceramics
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