Failure investigation of carbon nanotube/3Y-TZP nanocomposites

Sun, Jing; Gao, Lian; Iwasa, Mikio; Nakayama, Tadachika; Niihara, Koichi

doi:10.1016/j.ceramint.2004.11.010

Cited by 105 publications

(72 citation statements)

References 16 publications

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“…The reason given for the high performances of the as-prepared materials are the optimum dispersion of the CNTs and the process of spark plasma sintering performed at lower temperatures (1100 °C) with consequent lower damaging of the CNTs compared to traditional hot-pressing, (Borrell et al, 2010;Lupo et al, 2004). Sun (Sun et al, 2005) studied the mechanical and fracture behavior of MWCNT/3Y-TZP composites containing 0.1-1.0 wt.% MWCNTs and SWCNTs prepared by SPS. They found that the addition of CNTs had a negative influence on the hardness of the composites and no influence (at 0.5 wt.%) or a negative influence on the fracture toughness.…”

Section: Hardness and Fracture Toughnessmentioning

confidence: 99%

“…The experimental analysis of the effect of temperature on the conductivity suggested that for temperatures higher than 35 K, conduction can be attributed to thermal fluctuation-induced tunneling of the charge carriers through the insulating zirconia separating by the multiwall carbon nanotube clusters. Sun et al, 2005, reported the CNTs-3Y-TZP composite powder sintered by SPS. The prepared composite powder was carefully placed into a 20 mm diameter graphite die, and heated to the sintering temperatures at 1300 °C for 5 min.…”

Section: Processing Of Zro 2 -Based Ceramic-cnt Compositesmentioning

confidence: 99%

“…% yttria stabilized tetragonal polycrystalline zirconia (3Y-TZP) matrix composites containing 0.1-1 wt. % of MWCNTs and SWCNTs were fabricated by SPS at 1300 °C for 5 min, under an applied pressure of 20 MPa, (Sun et al, 2005). MWCNT/3Y-TZP composites with different MWCNT contents were prepared by SPS by several groups (Shi & Liang, 2006;Mazaheri et al, 2011).…”

Section: Processing Of Zro 2 -Based Ceramic-cnt Compositesmentioning

confidence: 99%

See 2 more Smart Citations

Carbon Nanofibers Reinforced Ceramic Matrix Composites

Hvizdoš¹,

Puchý²,

Duszová³

et al. 2011

Nanofibers - Production, Properties and Functional Applications

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Section: Hardness and Fracture Toughnessmentioning

confidence: 99%

Section: Processing Of Zro 2 -Based Ceramic-cnt Compositesmentioning

confidence: 99%

Section: Processing Of Zro 2 -Based Ceramic-cnt Compositesmentioning

confidence: 99%

See 1 more Smart Citation

Carbon Nanofibers Reinforced Ceramic Matrix Composites

Hvizdoš¹,

Puchý²,

Duszová³

et al. 2011

Nanofibers - Production, Properties and Functional Applications

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“…However, alumina-CNT composites are previously reported to have lower hardness as compared to monolithic alumina [10,[20][21][22][23][24][25][26] due to various reasons. Jiang et al reported lower hardness and toughness for alumina + 10 vol.% CNT composite due to the degradation of CNTs during sintering [26].…”

Section: Introductionmentioning

confidence: 99%

The production of advanced fine-grained alumina by carbon nanotube addition

Inam

Peijs

Reece

2011

Journal of the European Ceramic Society

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Alumina and alumina+1vol.% carbon nanotube (CNT) composites were fully densified by spark plasma sintering. Post-sintering heat treatments (1300-1500 •C) were performed to completely oxidize CNTs and then densify the remaining 1 vol.% to produce fine-grained ceramics. The grain size and Vickers hardness of the heat-treated composites were compared with the monolithic alumina sintered without CNT addition. Compared to the initial powder particle size of alumina (D50: 356±74 nm), minimal grain growth (∼450 nm) was observed for the fully dense heat-treated composites. A 25% improvement in Vickers hardness and >10 times finer average grain size were observed for alumina produced by the heat treatment (1300 •C) of alumina+1vol.% CNT composite, compared to alumina sintered without CNTs. Alumina and alumina + 1 vol.% carbon nanotube (CNT) composites were fully densified by spark plasma sintering. Post-sintering heat treatments (1300 -1500 o C) were performed to completely oxidize CNTs and then densify the remaining 1 vol.% to produce fine-grained ceramics. The grain size and Vickers hardness of the heat-treated composites were compared with the monolithic alumina sintered without CNT addition. Compared to the initial powder particle size of alumina (D 50 : 356 nm ± 74 nm), minimal grain growth (~450 nm) was observed for the fully dense heat-treated composites. A 25% improvement in Vickers hardness and >10 times finer average grain size were observed for alumina produced by the heat treatment (1300 o C) of alumina + 1 vol.% CNT composite, compared to alumina sintered without CNTs. Introduction

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“…Therefore, one way to take advantage of ceramics while compensating for these defects is to produce ceramic/CNT composites. ZrO 2 /CNT composites have been reported by several authors [12][13][14][15][16]. However, the effectiveness of CNTs on the properties of the ceramic composites is still matter of debate [15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Effect Of Carbon Nanotubes On The Properties Of Spark Plasma Sintered ZrO2/CNT Composites

Shim¹,

Jung²,

Kim³

et al. 2015

Archives of Metallurgy and Materials

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Zirconia matrix ZrO 2 /CNT composite materials reinforced with multiwall carbon nanotubes were fabricated using a spark plasma sintering technique. The effects of the amount of CNTs addition, sintering temperature and sintering pressure on the properties of the resulting ZrO 2 /CNT composites were examined. 0 to 9 vol. % CNTs were dispersed in zirconia powder, and the resulting mixture was sintered. The electrical conductivity, hardness, flexural strength, and density were measured to characterize the composites. The friction and wear properties of the composites were also tested. The flexural strength and friction coefficient of the composites were improved with up to 6 vol.% of CNT addition and the flexural strength showed a close relationship with the relative density of the composite. The electrical conductivity increased with increasing proportion of the CNTs, but the efficiency was reduced at more than 6 vol.% CNTs.

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Failure investigation of carbon nanotube/3Y-TZP nanocomposites

Cited by 105 publications

References 16 publications

Carbon Nanofibers Reinforced Ceramic Matrix Composites

Carbon Nanofibers Reinforced Ceramic Matrix Composites

The production of advanced fine-grained alumina by carbon nanotube addition

Effect Of Carbon Nanotubes On The Properties Of Spark Plasma Sintered ZrO2/CNT Composites

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