Effects of additives additions and sintering techniques on the microstructure and mechanical properties of Zirconia Toughened Alumina (ZTA): A review

Sktani, Zhwan Dilshad Ibrahim; Arab, Ali; Mohamed, Julie Juliewatty; Ahmad, Zainal Arifin

doi:10.1016/j.ijrmhm.2022.105870

Cited by 32 publications

(6 citation statements)

References 104 publications

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“…Finally, interlayer gaps were diminished and stair‐stepping microstructures were in situ formed for sintered Z5 and Z20 composites, as shown in Figure 9L,N. Overall, it could be summarized that sintering process played an important role in determining the stair‐stepping microstructures for sintered ZTA composites 36 …”

Section: Resultsmentioning

confidence: 76%

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Fabrication of ZTA crowns with simultaneously improved isotropy on mechanical property and surface quality by DLP

Zhou,

Zhang,

Zhang

2023

Int J Applied Ceramic Tech

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Zirconia‐toughened alumina (ZTA) composite ceramics show great potential for use in dental repair applications due to their unique properties. Complex‐shaped ZTA all‐porcelain crowns can be accurately fabricated using digital light processing (DLP) technology. However, effectively controlling both the anisotropy on mechanical property and surface quality of ZTA composites shaped by DLP remains a critical challenge that requires further research and innovation. In this work, we propose an efficient method to synchronously enhance the isotropy on mechanical performance and surface quality of DLP formed ZTA all‐porcelain crowns by controlling contents of yttria‐stabilized zirconia (YSZ) powders. When enhancing contents of YSZ from 5 to 20 wt%, multilayer microstructure with obvious interlayer gaps transformed into uniform microstructure with strong interlayer bonding, and the smaller alumina grain was observed on the stair‐stepping microstructure. Finally, the ZTA composites exhibited flexural and comprehensive strength as high as 640.3 and 6.9 MPa, and dimensional precision as low as 37.5 and 43.5 μm on top and side surface, together with simultaneously enhanced isotropy on mechanical property and surface quality, well satisfying the demands for all‐porcelain crowns fabricating. This study provides thorough understandings on isotropy regulating of DLP‐shaped ZTA all‐porcelain crowns with excellent mechanical performance and surface quality.

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Section: Resultsmentioning

confidence: 76%

“…Overall, it could be summarized that sintering process played an important role in determining the stair-stepping microstructures for sintered ZTA composites. 36…”

Section: Surfacementioning

confidence: 99%

Fabrication of ZTA crowns with simultaneously improved isotropy on mechanical property and surface quality by DLP

Zhou,

Zhang,

Zhang

2023

Int J Applied Ceramic Tech

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“…It shows that the number, complete amount and porosity of added substances with Z.T.A fixings, size of the grains, and the quantity of optional stages are significant boundaries influencing the mechanical properties. This survey likewise detailed the latest advancement in the improvement of properties of Z.T.A as an option in contrast to other expensive related progressed materials businesses [13]. Sadowski et.al, in this paper presents the results of research on common stabilized Al2O3 and ZrO2 nano material, and four ZrO2 /Al2O3 nano composites.…”

Section: Introductionmentioning

confidence: 96%

A comparative study using silicon carbide and zirconium dioxide nano material’s to improve the mechanical properties of 6261AA

Jaafari¹

2022

PEN

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The applications of nanotechnology differ in different areas of life. Despite all the advantages of nanomaterials, there are many difficulties that need further research the most important of which is obtaining cheap, practical materials with appropriate specifications for use in various applications. This study examines the addition of multiple proportions of two materials (Silicon Carbide and Zirconia) to 6261 Aluminum alloy. Results were obtained stating that using the two nano-materials together is better than using each one separately. The best ultimate tensile strength (UTS)waders were obtained at (1.5-2.0 wt%) ratios ranging. 1.5% wt. of ZrO2 and (%SiC+% ZrO2). The improvements were (75.1 %) and (92 %) respectively. The UTS improvements (84.3%) for Al/ 2.0wt. %SiC. Also, a significant improvement was seen in the hardness values for all the weight ratios of the nano-additives with respect to the base alloy. The percentage of ductility has decreased after adding nano-materials.

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“…However, innovative sintering methods have been adopted to solve this problem, such as the spark plasma sintering (SPS) technique. There have been so many reports on the development of bulk nanocrystalline; specifically, some elemental-based materials based on different sintering routes such as microwave sintering, hot isostatic pressing (HIP), hot pressing [ [13] , [14] , [15] ], and the exploration of related properties [ [16] , [17] , [18] , [19] , [20] ], to name a few. Still, none has been on the influence of the processing parameters of SPS on the densification and grain growth of nanomaterials and their associated structural attributes.…”

Section: Introductionmentioning

confidence: 99%

Sintering of nanocrystalline materials: Sintering parameters

Babalola

Ayodele

Olubambi

2023

Heliyon

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Effects of additives additions and sintering techniques on the microstructure and mechanical properties of Zirconia Toughened Alumina (ZTA): A review

Cited by 32 publications

References 104 publications

Fabrication of ZTA crowns with simultaneously improved isotropy on mechanical property and surface quality by DLP

Fabrication of ZTA crowns with simultaneously improved isotropy on mechanical property and surface quality by DLP

A comparative study using silicon carbide and zirconium dioxide nano material’s to improve the mechanical properties of 6261AA

Sintering of nanocrystalline materials: Sintering parameters

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