Mechanical behavior of zirconia/alumina composites

Choi, Sung R.; Bansal, Narottam P.

doi:10.1016/j.ceramint.2004.03.032

Cited by 96 publications

(70 citation statements)

References 13 publications

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“…The most studied compositions are constituted by alumina Y 2 O 3 dstabilized zirconia (3 mol% of Y 2 O 3 , 3YTZP). A large number of studies have demonstrated their improved mechanical behavior (Casellas, Rafols, Llanes, & Anglada, 1999;Cesari, Esposito, Furgiuele, Maletta, & Tucci, 2006;Chevalier, Grandjean, Kuntz, & Pezzotti, 2009;Choi & Bansal, 2005;Magnani & Brillante, 2005;Tuan, Chen, Wang, Cheng, & Kuo, 2002) and thermal properties (Bansal & Zhu, 2005) compared with those of monophase alumina. These materials combine the outstanding properties of alumina, i.e., hardness, chemical inertness, and wear resistance, with improved fracture resistance.…”

Section: Alumina-zirconia Micro and Nanocompositesmentioning

confidence: 97%

Processing of Alumina and Corresponding Composites

Baudı́n

2014

Comprehensive Hard Materials

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Section: Alumina-zirconia Micro and Nanocompositesmentioning

confidence: 97%

Processing of Alumina and Corresponding Composites

Baudı́n

2014

Comprehensive Hard Materials

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“…The addition of alumina particles to yttria-stabilized tetragonal zirconia polycrystals(Y-TZP) has been proved to suppress the transformation and improve the mechanical properties [4][5][6] . Nanometersized Al 2 O 3 particles are dispersed within the zirconia matrix grains or at the ZrO 2 grain boundaries, thus the intergranular and intragranular nanostructure contribute to better mechanical properties than the conventional Y-TZP.…”

Section: Introductionmentioning

confidence: 99%

Influence of alumina addition on the optical property of zirconia/alumina composite dental ceramics

Liao

et al. 2011

J. Wuhan Univ. Technol.-Mat. Sci. Edit.

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The influence of various alumina additions on the optical property of zirconia/alumina composite ceramics was investigated. The relative sintered densities, transmittances, color and the microstructure of the composite ceramics were studied. The experimental results showed that the relative sintered densities and transmittances decreased with alumina addition. The lightness increased obviously but the chroma change was small. Pure zirconia nanopowders sintered densely could obtain the relatively high transmittance, while the transmittance and the lightness of slight addition changed signifi cantly. The zirconia/ alumina composite ceramics with alumina addition less than 7.5wt% could achieve the relatively stable and reliable optical properties.

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“…In addition, it exhibits low thermal conductivity, high thermal-expansion coefficient and low fracture toughness. The strength, toughness, thermal shock and corrosion resistance of YSZ can be improved by the addition of alumina [23,25]. Alumina has also been used effectively as a pinning agent to reduce the dynamic grain growth and impart superplasticity during high temperature deformation of YSZ [24].…”

Section: Introductionmentioning

confidence: 99%

“…Yttria stabilized zirconia (YSZ) is used in thermal barrier coatings (TBC) and also as an electrolyte in solid oxide fuel cells (SOFC). This is because of its high oxygen ion conductivity, stability in both oxidizing and reducing environments [23,24]. However, it is brittle and susceptible to fracture.…”

Section: Introductionmentioning

confidence: 99%

Structure and properties of electrodeposited Ni–Co–YZA composite coatings

2008

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The aim is to develop an economical composite coating with high thermal stability. Ni-Co alloys are found to possess better thermal, physical and mechanical properties compared to Ni. Also, oxide particles as distributed phase can impart better thermal stability. Hence, particulates of composite Yttria stabilised zirconia, a commonly used high temperature material and alumina (YZA) were reinforced in various Ni-Co alloy matrices through electrodeposition. The influence of YZA on the microhardness, tribology and corrosion behaviour of Ni-Co alloys with Co contents of 0 wt.%, 17 wt.%, 38 wt.% and 85 wt.% was evaluated. Optical and Scanning Electron Microscopy (SEM) confirmed the presence of YZA particles and Energy Dispersive X-ray Analysis (EDX) revealed the composition. Tribology testing showed that composite containing 38 wt.% Co displayed better wear resistance. It was found from the immersion corrosion studies that Ni-17Co-YZA coating displayed improved corrosion resistance. Thermal stability studies showed that Ni-85Co-YZA coating retained its microhardness at temperatures of 600°C. Thus, these coatings can be tailored for various applications by varying the cobalt content.

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Mechanical behavior of zirconia/alumina composites

Cited by 96 publications

References 13 publications

Processing of Alumina and Corresponding Composites

Processing of Alumina and Corresponding Composites

Influence of alumina addition on the optical property of zirconia/alumina composite dental ceramics

Structure and properties of electrodeposited Ni–Co–YZA composite coatings

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