Hot Isostatic Pressing of a Presintered Yttria‐Stabilized Zirconia Ceramic

Druschitz, Alan P.; Schroth, James G.

doi:10.1111/j.1151-2916.1989.tb06287.x

Cited by 31 publications

(10 citation statements)

References 15 publications

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“…This has also been shown by Druschitz and Schroth [4] who found an increasing bending strength with decreasing porosity. Therefore it can be expected that the bending strength might be considerably improved when dense specimens are used, which means that fine grained Y-TZP ceramics potentially possess a good high temperature bending strength.…”

Section: ~6supporting

confidence: 63%

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Mechanical properties of ultra-fine grained zirconia ceramics

et al. 1992

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The mechanical properties of tetragonal zirconia (TZP) materials doped with Y, Ce or Ti were studied as a function of temperature and grain size. Fine grained Y-TZP (grain size < 0.3 ttm) shows values for fracture toughness and strength at room temperature, which are comparable with the coarse grained transformation toughened materials, despite lacking transformation toughening. The morphology of the fracture surface points to crack deflection as the most important toughening mechanism. At 800 ~ fracture toughness and strength are higher than in coarse grained Y-TZP materials. Doping Y-TZP with Ce or Ti results in a similar trend in mechanical properties, for fine grained material, as for the Y-TZP materials.

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Section: ~6supporting

confidence: 63%

“…In the literature a large variety of fracture toughness values are reported [2][3][4][5][6][7][8]. These values vary typically between 4-19MPam -1/2.…”

Section: Introductionmentioning

confidence: 99%

Mechanical properties of ultra-fine grained zirconia ceramics

et al. 1992

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“…In this study, the biaxial flexural strength of HIP Y-TZP MS was about two times greater than that previously reported for Y-TZP 23) . Hot isostatic pressing was introduced to achieve very high density and enhance the reliability of ceramic components 16) . Total number of defects and the largest defect size were reduced by HIP, resulting in an increase in the strength and Weibull modulus.…”

Section: Discussionmentioning

confidence: 99%

“…Therefore, high mechanical performance can be ensured by HIP processing without resort to a complicated fabricating procedure. This method of processing affords very high density, enhancing the reliability of the ceramic components 15,16) . Given that the ceramic implant will be subjected to a humid environment and mastication in the oral cavity, cyclic fatigue tests are essential in assuring their success.…”

Section: Introductionmentioning

confidence: 99%

Influence of surface treatment of yttria-stabilized tetragonal zirconia polycrystal with hot isostatic pressing on cyclic fatigue strength

et al. 2013

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Hot isostatic pressing processed yttria-stabilized tetragonal zirconia polycrystal (HIP Y-TZP) has the potential for application to implants due to its high mechanical performance. The aim of this study was to investigate the influence of surface treatment of HIP Y-TZP on cyclic fatigue strength. HIP Y-TZP specimens were subjected to different surface treatments. Biaxial flexural strength was determined by both static and cyclic fatigue testing. In the cyclic fatigue test, the load was applied at a frequency of 10 Hz for 10 6 cycles in distilled water at 37°C. The surface morphology, roughness, and crystal phase of the surfaces were also evaluated. The cyclic fatigue strength (888 MPa) of HIP Y-TZP with sandblasting and acid-etching was more than twice that of Y-TZP as specified in ISO 13356 for surgical implants (320 MPa), indicating the clinical potential of this material.

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“…This means that high mechanical performance can be ensured by HIP processing without resort to a complicated fabricating procedure. Moreover, it allows a very high density to be achieved, thus enhancing the reliability of the ceramic components 13,14) . In vitro implant testing protocols vary, making it difficult to compare results.…”

Section: Introductionmentioning

confidence: 99%

Cyclic fatigue resistance of yttria-stabilized tetragonal zirconia polycrystals with hot isostatic press processing

2012

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This study investigated the influence of surface roughness and cyclic loading on fatigue resistance in Y-TZP subjected to hot isostatic pressing (HIP). Fifty Y-TZP cylinders 3.0 mm in diameter were divided into Group A (polished by centerless method; TZP-CP) or Group B (blasted and acid-etched: TZP-SB150E). Twenty five cp-titanium cylinders (Ti-SB150E) were used as a control. Static and cyclic tests were carried out according to ISO 14801. The cyclic fatigue test was performed in distilled water at 37°C. Surface morphology and roughness as well as crystal phase on the surfaces were also evaluated. Fracture force under the static test was 1,765N (TZP-CP), 1,220N (TZP-SB150E), and 850 N (yield force, Ti-SB150E). Fracture values under the cyclic test decreased to approximately 70% of those under the static tests. These results indicate that HIPed Y-TZP with a 3.0-mm diameter has sufficient durability for application to dental implants.

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Hot Isostatic Pressing of a Presintered Yttria‐Stabilized Zirconia Ceramic

Cited by 31 publications

References 15 publications

Mechanical properties of ultra-fine grained zirconia ceramics

Mechanical properties of ultra-fine grained zirconia ceramics

Influence of surface treatment of yttria-stabilized tetragonal zirconia polycrystal with hot isostatic pressing on cyclic fatigue strength

Cyclic fatigue resistance of yttria-stabilized tetragonal zirconia polycrystals with hot isostatic press processing

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