Effects of yttria stabilized zirconia (3Y-TZP) percentages on the ZTA dynamic mechanical properties

Arab, Ali; Ahmad, Zainal Arifin; Ahmad, Rosmaini

doi:10.1016/j.ijrmhm.2015.01.005

Cited by 26 publications

(13 citation statements)

References 37 publications

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“…The results of the relationship between the hardness and dynamic failure stress in the current work and previous work [32,44] is illustrated in Figure 9. All of these data except that of ZTA with 0.2 wt.% MgO are below the line suggested by Lankford et al [53] (Failure stress = (Hardness/3)).…”

Section: Resultsmentioning

confidence: 50%

“…By adding the 0.2 wt.% MgO to the ZTA, the grain size decreases as well as porosity that lead to increasing the dynamic failure strength of the sample and it is being closer to the upper limit of the dynamic compressive failure stress. The dynamic compressive failure stress of the ceramic is dependent on many parameters such as grain size, porosity and density of microcracks [32]. During the compressive loading, frictional sliding along the flaw faces leads to the development of wing cracks at the tips of the pre-existing flaws, starting with flaws having the largest size.…”

Section: Resultsmentioning

confidence: 99%

“…Duan et al [31] also coupled the 2D digital image correlation (DIC) to the Split-Hopkinson pressure bar (SHPB) to study the impact behavior of materials. Arab et al [32] reported the effect of different percentages of zirconia (10–40 wt.%) on the ZTA dynamic behavior. They found ZTA with 20% of zirconia has the highest dynamic strength.…”

Section: Introductionmentioning

confidence: 99%

“…Azhar et al [43] observed adding the MgO to the ZTA can improve the hardness. However, there are only a few studies regarding the dynamic behavior for ZTA [32,44]. Therefore, the current work is presented to fill this gap by discussing the mechanical properties such as hardness and fracture toughness of ZTA added with MgO, and their relationship with the dynamic strength and with the dynamic strength was examined.…”

Section: Introductionmentioning

confidence: 99%

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Effect of MgO Addition on the Mechanical and Dynamic Properties of Zirconia Toughened Alumina (ZTA) Ceramics

et al. 2019

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Zirconia toughened alumina (ZTA) is a promising advanced ceramic material for a wide range of applications that are subjected to dynamic loading. Therefore, the investigation of dynamic compressive strength, fracture toughness and hardness is essential for ZTA ceramics. However, the relationship between these mechanical properties in ZTA has not yet been established. An example of this relationship is demonstrated using ZTA samples added with MgO prepared through conventional sintering. The microstructure and mechanical properties of ZTA composites were characterized. The hardness of ZTA composites increased for ≤0.7 wt.% MgO due to the pinning effect of MgO and decrease of the porosity in the microstructure. Oppositely, the fracture toughness of ZTA composites continuously decreased due to the size reduction of Al2O3 grains. This is the main reason of deteriorate of dynamic compressive strength more than 0.2 wt.% of MgO addition. Therefore, the SHPB test shows the improvement of the dynamic compressive strength only up to a tiny amount (0.2 wt.% of MgO addition) into ZTA ceramics.

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Section: Resultsmentioning

confidence: 50%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effect of MgO Addition on the Mechanical and Dynamic Properties of Zirconia Toughened Alumina (ZTA) Ceramics

et al. 2019

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“…De acordo com Marques, a porosidade tem influência direta na taxa de erosão de materiais cerâmicos como a alumina e o ZPEC. Trabalhos como os de Zeng et al (2014), Zhong et al (2015) e Arab et al (2015) apresentam resultados promissores em relação à melhora de propriedades físicas e mecânicas como tenacidade à fratura, dureza, resistência à flexão, densidade e porosidade com a adição de ZTA em cerâmicos à base de alumina. A gama de aplicações para esses compósitos é vasta.…”

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