Nanoindentation Characterization of the Hardness of Zirconia Dental Ceramics

Shao, Longquan; Jiang, Danyu; Gong, Jianghong

doi:10.1002/adem.201200367

Cited by 27 publications

(25 citation statements)

References 20 publications

(25 reference statements)

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“…First, most of the previous studies concern the metals or metallic glasses [6,10,13] which exhibit significant plasticity during loading period and significant creep during holding period. The displacement change associated with the unknown process is comparatively small and has little effect on the displacement-time relation.…”

Section: Resultsmentioning

confidence: 99%

“…The displacement change associated with the unknown process is comparatively small and has little effect on the displacement-time relation. Second, some studies were also made on brittle ceramics and glasses [6,12,16], but with a small loading rate (low peak load to avoid the cracking due to brittleness) and/or a short holding time (considering the insignificant creep deformation). This may restrain the amount of the displacement reduction.…”

Section: Resultsmentioning

confidence: 99%

“…When the loading time is sufficiently long, both H and E tend to be invariable. Shao et al [6] measured the hardness of the same Y-TZP with nanoindentation tests but with a loading time of 30 s and a holding time of 30 s and analyzed the experimental data with the modified proportional specimen resistance (PSR) model [17,18]. They reported that the material has a load-independent hardness of 18.0 GPa.…”

Section: Resultsmentioning

confidence: 99%

“…Evaluation of the resistance to contact damage is a critical issue for the clinical applications of zirconia dental ceramics [6]. As an important parameter for evaluating the material's resistance to contact damage, hardness characteristics of zirconia dental ceramics have been frequently examined with nanoindentation tests in many studies during the past years [6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

“…As an important parameter for evaluating the material's resistance to contact damage, hardness characteristics of zirconia dental ceramics have been frequently examined with nanoindentation tests in many studies during the past years [6][7][8][9]. This paper will report an abnormal phenomenon observed during holding period in nanoindentation tests conducted on an yttria-stabilized zirconia tetragonal  polycrystal (Y-TZP), which has been widely used for prosthetic restorations.…”

Section: Introductionmentioning

confidence: 99%

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An abnormal displacement change during holding period in nanoindentation tests on zirconia dental ceramic

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An abnormal displacement change observed during the holding period in nanoindentation tests on a zirconia dental ceramic was reported in this paper. It was found that, at the initial stage of the holding period, the measured displacement versus time curves were similar in shape with the typical indentation creep curve reported in previous studies. As the holding lasted for long time, however, an evident reduction in displacement was observed for tests with high loading rate, implying that another unknown process, which might result in a decrease in displacement, would co-exist with creep during holding period. Elastic recovery was suggested to be one of the possible sources for such a displacement reduction. An empirical method was also proposed to eliminate the effect of this displacement reduction on the determination of hardness and Young's modulus.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

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Section: Introductionmentioning

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An abnormal displacement change during holding period in nanoindentation tests on zirconia dental ceramic

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Nanoindentation Characterization of the Hardness of Zirconia Dental Ceramics

Cited by 27 publications

References 20 publications

An abnormal displacement change during holding period in nanoindentation tests on zirconia dental ceramic

An abnormal displacement change during holding period in nanoindentation tests on zirconia dental ceramic

Functional Textiles with Smart Properties: Their Fabrications and Sustainable Applications

A Molecularly Engineered Zwitterionic Hydrogel with Strengthened Anti‐Polyelectrolyte Effect: from High‐Rate Solar Desalination to Efficient Electricity Generation

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