Strengthening of Alumina-Based Ceramics with Titanium Nanoparticles

Esparza-Vázquez, Sergio J.; Rocha–Rangel, Enrique; Rodríguez-García, José; Hernández-Bocanegra, Constantin Alberto

doi:10.4236/msa.2014.57050

Cited by 5 publications

(3 citation statements)

References 8 publications

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“…Studies on titanium dioxide (TiO 2 ) nanoparticles have documented increased hardness, ductility and yield strength. De la Fuente et al, Esparza-Vázquez et al, Siegel et al and Nazari et al 7,13,14,17 found significant increases in toughness after incorporation of nanoparticles into ceramics. Titanium dioxide nanoparticles might be used in the form of microscale pigments or as nano-objects.…”

Section: Discussionmentioning

confidence: 96%

“…8-10 Various nanoparticles such as silver oxide (AgO), 11 zirconia (ZrO 2 ), 12 alumina (Al 2 O 3 ), 14 hydroxyapatite (HA), 11 titanium dioxide (TiO 2 ) 13 and platinum (Pt) 15 have been tried in different proportions to improve the properties of feldspathic porcelain. 11-15 Uno et al, 1 Mohsen et al, 11 Esparza-Vázquez et al, 13 Fujieda et al 15 and Siegel et al 16 have determined the fracture toughness with various nanoparticles. The results from these studies were supportive but still prospects exist in improving the properties of feldspathic porcelain.…”

Section: Introductionmentioning

confidence: 99%

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Effects of incorporation of silver and titanium nanoparticles on feldspathic ceramic toughness

Vasudevan

Chander

Reddy

et al. 2019

J Dent Res Dent Clin Dent Prospects

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Background. Porcelain is brittle and in many situations it requires replacement in fractured or chipped restorations. The prospects exist in improving the strength of feldspathic porcelain to widen its applications. This study evaluated the fracture toughness of feldspathic porcelain after incorporation of silver and titanium nanoparticles at varying concentrations (0.5 wt%, 1 wt%, 1.5 wt% and 2 wt%). Methods. Test specimen dimensions were standardized to ASTM C1421–16 standards and a three-point flexure test was carried out to evaluate fracture toughness. A total of 330 samples were fabricated and broadly divided into three groups. Group I (titanium nanoparticles) and group II (silver nanoparticles) were further subdivided into 5 groups (0 wt%, 0.5 wt%, 1 wt%, 1.5 wt% and 2 wt%) for fracture toughness analysis, with each group consisting of 30 samples. Group III contained the superior concentration of both titanium and silver nanoparticles. The fracture toughness (KIC) was calculated using indentation fracture method and microstructure observations were made using scanning electron microscopy. The KIC values were compared and evaluated using one-way ANOVA. Results. Data were analyzed using one-way ANOVA and Tukey’s HSD post hoc test multiple comparisons. The mean values of group I, group II and group III were 1.949 MPa.m1/2, 2.002 MPa.m1/2 and 1.330 MPa.m1/2 , respectively. Conclusion. The results revealed that the samples reinforced with titanium and silver nanoparticles showed significant increases in fracture toughness. The blending of superior concentration of both titanium and silver nanoparticles decreased fracture resistance.

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Section: Discussionmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

Effects of incorporation of silver and titanium nanoparticles on feldspathic ceramic toughness

Vasudevan

Chander

Reddy

et al. 2019

J Dent Res Dent Clin Dent Prospects

View full text Add to dashboard Cite

show abstract

“…Prielipp et al [16] synthesized alumina-based composites reinforced with aluminum metal particles, indicating a crack toughness of 10.5 MPa•m -0.5 with 35 % of aluminum. Recently, alumina-based composites reinforced with titanium particles have been developed under different conditions, reporting favorable densification results, micro-hardness, and fracture toughness [17][18][19][20][21][22].…”

Section: Introductionmentioning

confidence: 99%

Effect of Titanium Particles on the Microstructure and Mechanical Properties of Alumina Matrix Composites

Rodríguez-García¹

2021

Ceramics - Silikaty

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In this study, Al 2 O 3 -based composites strengthened with Ti were manufactured. High-energy milling was used to mix and grind the raw materials (450 rpm during 40 min). These powders were compacted (300 MPa) into cylindrical samples and sintered at 1500 °C for 2 h. Scanning electron microscopy observations show dense, fine and homogeneous microstructures, with a uniform distribution of metal particles throughout the ceramic matrix. A significant effect on the composite micro-hardness can be observed (as the titanium percentage is increased, micro-hardness is also increased). In other words, composites have a significant surface hardness, which diminishes towards the center of the piece. This attribute is highly useful for solid elements exposed to extreme strain and shearing conditions since hardness allows withstanding wear, corrosion, and friction, but the soft center allows withstanding vertical loads in the piece cross section. The fracture toughness, estimated by the indentation fracture method, showed that the manufactured composites here present higher values up to 100 % than the control sample's average (0.0 % Ti). Hence, it can be inferred that titanium particles in a ceramic matrix can disperse the energy of cracks spreading.

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Effect of green synthesized silver nanoparticles on optical behavior of feldspathic porcelain

Firoz

Vafaee

Farmany

et al. 2021

Particulate Science and Technology

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Strengthening of Alumina-Based Ceramics with Titanium Nanoparticles

Cited by 5 publications

References 8 publications

Effects of incorporation of silver and titanium nanoparticles on feldspathic ceramic toughness

Effects of incorporation of silver and titanium nanoparticles on feldspathic ceramic toughness

Effect of Titanium Particles on the Microstructure and Mechanical Properties of Alumina Matrix Composites

Effect of green synthesized silver nanoparticles on optical behavior of feldspathic porcelain

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