Unmatched Durability With Zirconia Ceramic

Zirconia offers advanced materials solutions for an extensive array of industrial applications. Ranging from ZTA’s composite marvel to Ce-TZP’s hardwearing properties, its compositional diversity provides high performance solutions that cover a range of industry needs.

Numerous factors can impact the mechanical performance of additively manufactured zirconia ceramic, including its raw material slurry ratio, porosity and agglomerates, connection between layers, and shrinkage.

De Corematrix (r) 3D Pro

Ceramic blocks are an increasingly popular choice for dental restorations, as they’re stronger and more durable than other restorative materials. Ceramic blocks also boast a lower coefficient of thermal expansion – meaning they won’t expand or contract as the temperature fluctuates, making them perfect for use in areas subject to temperature swings like crowns and veneers. Furthermore, ceramic blocks can be more easily cleaned than other materials – another factor making ceramic an attractive option in dental applications that require durability.

CAD/CAM-fabricated all-ceramic prostheses can provide patients with long-lasting and beautiful results, but not all ceramics are equal. Certain ceramics offer better biocompatibility and esthetics than others, so selecting an ideal material for each patient’s individual needs is key. Lithium disilicate and zirconia are currently two popular choices when used for restorative treatments.

But with advancements in CAD/CAM technology, more options are now available to dentists. ZrO (yttria-stabilized zirconia) is an extremely hard material with one of the highest mechanical properties ever recorded for dental ceramics; and has a flexural strength up to 100 MPa which means it resists fracture more effectively than PFM or metal-based crowns. Furthermore, monolithic ZrO doesn’t contain vulnerable layers that fuse it to substructure materials like gold or porcelain substructure materials allowing fabrication via CAD/CAM systems.

ZTA Shafts

ZTA ceramic is an advanced zirconia toughened alumina hybrid material, boasting the benefits of both materials. While still possessing excellent abrasion resistance and improved hardness/toughness for greater performance and longer longevity, its zirconia toughened structure gives ZTA superior corrosion resistance allowing it to withstand environments that would destroy other ceramics.

ZTA ceramic shafts, constructed from alumina and zirconia, offer the highest yield strength of any advanced industrial ceramics, enabling them to withstand higher temperatures for extended periods before failure occurs. This advantage makes ZTA shafts particularly suitable for mechanical equipment applications where wear-and-tear pressure will cause stress fatigue damage over time.

Zirconia with added yttria becomes much stronger than standard alumina and silicon nitride, providing it with increased impact resistance of ten times over. If an object hits a ZTA ceramic shaft, its zirconia inclusions act like tiny barriers to absorb and dissipate energy before cracks form in its structure.

ZTA ceramic tubes have an array of demanding applications in mechanical engineering, refractory, chemical and metallurgical industries. Highly resistant to high temperatures, acids and alkalis combined with superior hardness and toughness makes it the perfect way to transport chemical liquids or as insulating protective sleeves for transporting them. Plus they’re biocompatible, non-toxic and contaminant free – perfect for medical and refractory uses!

MSZ

Zirconia ceramic material stands alone as one of the toughest ceramics on the market, providing exceptional abrasion resistance and wear/toughness, performing even in operating environments where plastics, metals and other ceramics cannot. Zirconia can be found in applications including structural components, bushings, pistons sleeves guides insulators.

SEM images of fracture surfaces for alumina, MSZ and YSZ all exhibit trimodal microstructures which significantly influence fracture mode. For YSZ these microstructures indicate intergranular failure mode while in MSZ and WO3 they reveal transgranular failure mode; both material testing results were close to experimental fracture values for all three materials tested.

Porous mullite samples that were modified with magnesia-stabilized zirconia (2.8mol% MgO) and WO3 have the highest apparent porosity among sintered samples with an average porosity of 73.2 + 2.2%. Doubling the amount of WO3 reduces porosity to 66 + 2%.

MSZ and WO3 ceramic samples feature high specific heat capacities coupled with low thermal diffusivities that significantly enhance thermal shock resistance when compared to yttria-stabilized zirconia (8mol% Y2O3) and WO3. Ball-on-ring TRS tests of alumina, MSZ and YSZ showed characteristic strengths within acceptable values expected of engineered ceramics while their Weibull moduli fall within acceptable ranges for advanced engineering ceramics.

CSZ

Yttria partially stabilized zirconia (Y-PSZ) has long been the go-to ceramic material for thermal barrier coatings (TBCs). It provides high temperature stability, excellent toughness, and low heat conductivity – as well as ageing under high temperatures due to lack of oxygen transport ion transport; however its durability is compromised by ageing and densification under high temperatures; its limited oxygen transport impairs durability even further. To address these shortcomings the Ceria-stabilized Zirconia Ceramic (CSZ) offers superior thermal shock resistance by means of Ceria-stabilized Zirconia’s use as an oxidation promoter plus dual layer construction which offers greater thermal shock shock resistance.

Comparative to 8 weight% yttria, CSZ offers superior durability and toughness characteristics. Furthermore, it does not undergo phase transition at high temperatures and offers superior sintering resistance. Furthermore, its heat transfer coefficients and oxygen ion diffusivity allow it to better prevent bond coat and substrate oxidization.

Advanced materials, including gadolinium zirconate (GZO), lanthanum hex aluminate (LaAlO3), calcium zirconate (CaZrO3) and ceria-stabilized zirconia (CSZ), are being utilized in cutting-edge thermo-mechanical bearing covers (TBCs) to shield metals and ceramics from heated degradation, providing greater wear protection as well as high temperature corrosion resistance in gas turbine applications.

Researchers conducted hot corrosion testing on thick CYSZ multilayer systems to gain a better understanding of their behavior in hot temperatures. After conducting extensive analysis on each zone, no damage caused by aggressive S- and Na-containing salts could be seen. Furthermore, TGO zone morphologies remained consistent with that of coatings even after hot corrosion testing was complete.