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Zirconia-toughened alumina ceramic

The ceramic materials investigated in this paper are hot-pressed silicon nitride (HPSN), reaction-bonded silicon nitride (RBSN), zirconia-toughened alumina (AI2O3), and porous SiC. The available material properties for these ceramics are given in Table 4.3. The HPSN and zirconia-toughened alumina ceramics were in the shape of flexural strength test bars cut from billets. The RBSN ceramic was molded into bars of the shape of flexural test specimens. The porous SiC ceramic was provided in the shape of flexural test specimens. [Pg.90]

Grinding Test Conditions for Zirconia Toughened Alumina Ceramic... [Pg.96]

Flexural strength versus depth of material removed by lapping results for zirconia-toughened alumina ceramic are shown in Figure 4.11a through... [Pg.102]

Depth of damage determined by the lapping method for zirconia-toughened alumina ceramic. [Pg.104]

Schioler LJ, Katz RN, Brog T, Lawn BR, Mechanical properties of zirconia toughened alumina. Ceramic Eng Sci Proc, 6(7-8), 822-825, 1985. [Pg.623]

Pratapa, S. and Low, I.M. (1996). The Effects of Spodumene Addition on Properties of Functionally-graded Aluminium Titanate/Zirconia-toughened Alumina Composites . In Proceedings of the 2nd International Meeting of Pacific Rim Ceramic Societies. [Pg.372]

It has been known for some time that considerable improvement of the mechanical properties of alumina in terms of flexural strength, fracture toughness, yield strength and elastic modulus can be achieved by adding particles of stabilised zir-conia as a structural reinforcement (see Chapter 4.1.2). Such ceramics are known as ZTA (zirconia-toughened alumina), duplex ceramics or dispersion ceramics. [Pg.72]

Figure 4.2 Reinforcement mechanism of a ZTA (zirconia-toughened alumina) duplex ceramics with agglomerated Y-PSZ particles. Figure 4.2 Reinforcement mechanism of a ZTA (zirconia-toughened alumina) duplex ceramics with agglomerated Y-PSZ particles.
For determining the depth of damage caused by the grinding of RBSN and zirconia-toughened alumina, the ceramic materials were first ground under a range of grit depth of cut conditions and then lapped to establish the depth... [Pg.94]

Zirconia-toughened alumina (ZTA) is an aluminum oxide (AI2O3) ceramic material in which stabilized zirconia (Z1O2) is present as a secondary... [Pg.258]

In the past, zirconia has been added routinely to a variety of ceramic materials in order to increase their toughness. Zirconia-toughened alumina was first developed by Claussen, who demonstrated a significant toughening effect of unstabilized, but transformable, tetragonal zirconia particles within the alumina matrix [214]. [Pg.37]

Bartolome JF, Bruno G, Deaza AH (2008) Neutron diffraction residual stress analysis of zirconia toughened alumina (ZTA) composites. J Eur Ceram Soc 28(9) 1809-1814... [Pg.683]

Zirconia-toughened alumina (ZTA) ceramics with high transformation toughening ability can be obtained if a high portion of tetragonal phase with the possibility to transform under applied stress is retained at room temperature. This requires that the... [Pg.525]

De Aza, A. H., Chevalier, J., Fantozzi, G., Schehl, M. Tomecillas, R. (2002). Crack growth resistance of alumina, zirconia and zirconia toughened alnmina ceramics for joint prostheses. Biomaterials 23, 937-945. [Pg.127]

Ikedal J, Pezzotti G, Nakanishi T (2(X)6) Phase stability of zirconia toughened alumina composite for artificial joints. Key Eng Matls 309-311 1243-1246 Begand S, Oberbach T, Glien W (2007) Corrosion behavior of ATZ and ZTA ceramics. Key Eng Matls 330-332 1227-1230... [Pg.60]

J. Wang, R. Stevens, Review Zirconia-toughened alumina (ZTA) ceramics. Journal of Materials Science 24, p.3421-3440, (1989)... [Pg.101]

Gadow, R. and Kern, F. (2006) Pressmeless sintering of injection molded zirconia toughened alumina nanocrystals. Jourrud of the Ceramic Society of Japan, 114, 958-62. [Pg.282]

There are three t5q)es of ceramics that are cUiucally relevant to contemporary total hip replacement, including alumina, zirconia, and zirconia-toughened alumina composites. A fourth ceramic biomaterial, oxidized zirconium, is a ceramic-metal composite with a surface layer of zirconia. A fifth biomaterial, silicon nitride, is in advanced stages of commerciahzation for hip arthroplasty. [Pg.63]

FIGURE 6.19 Comparison of a ceramic revision femoral head fabricated from zirconia-toughened alumina (ZTA) with primary ceramic heads. The revision head has a metal sleeve to regenerate die trunnion of a femoral stem, which may become damaged in vivo. [Pg.71]

Zirconia-toughened ceramics (ZTCs). These consist of tetragonal or monoclinic zirconia particles finely dispersed in other ceramic matrices such as alumina, mullite, and spinel. [Pg.386]

Ceramic Cutting Toois, Fig. 4 (a) schematic of transformation toughening, (b) structure of zirconia reinforced alumina... [Pg.143]

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See also in sourсe #XX -- [ Pg.90 , Pg.94 , Pg.258 , Pg.261 ]



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