Specifications Table

Product Name – Zirconium(IV) oxide, yttria stabilized, 99% (metals basis excluding Hf), Hf 4% max

Quantity/Pack Size – 500g, 100g

Form – Powder

Grade – 99% (metals basis excluding Hf)

Application – Solid oxide fuel cells, thermal barrier coatings, oxygen sensors, high-temperature ceramics

Product Overview

Zirconium(IV) oxide, yttria stabilized, is a high-performance ceramic material engineered for exceptional thermal and mechanical stability. With a purity of 99% (metals basis excluding hafnium, ≤4% max), this yttria-stabilized zirconia (YSZ) exhibits superior ionic conductivity, making it indispensable for applications requiring high-temperature resistance and chemical inertness. The material’s cubic crystal structure, achieved through yttria stabilization, prevents phase transformations during thermal cycling, ensuring long-term durability in demanding environments. Its low thermal conductivity and high fracture toughness further enhance its suitability for thermal barrier coatings, where it protects metal substrates from extreme heat and oxidation. Additionally, the fine particle size distribution of this powder ensures uniform sintering, resulting in dense, defect-free ceramic components. The controlled hafnium content (≤4%) guarantees consistent performance, as hafnium’s presence can alter the material’s properties if unchecked. This grade is particularly valued in electrochemical applications, such as solid oxide fuel cells (SOFCs), where its oxygen ion conductivity enables efficient energy conversion. The powder’s high surface area also facilitates better reactivity in composite materials, making it a versatile choice for researchers and engineers developing next-generation ceramics.

FAQs

1. What is the role of yttria in stabilizing zirconium oxide?

Yttria (yttrium oxide) is added to zirconium oxide to stabilize its high-temperature cubic phase, preventing destructive phase transitions during heating and cooling. This stabilization enhances thermal shock resistance and ionic conductivity, critical for applications like solid oxide fuel cells and thermal barrier coatings.

2. How does the hafnium content (≤4%) affect the material’s performance?

Hafnium is naturally present in zirconium ores and can influence the material’s properties if concentrations exceed 4%. Controlled hafnium levels ensure consistent thermal expansion, mechanical strength, and ionic conductivity, avoiding unintended variations in performance for precision applications.

3. Can this yttria-stabilized zirconia be used for 3D printing ceramic components?

Yes, this powder is compatible with advanced ceramic manufacturing techniques, including 3D printing (additive manufacturing), provided the particle size and distribution are optimized for the specific printing process. Its high purity and stability make it suitable for producing complex, high-performance ceramic parts.

4. What is the recommended storage condition to maintain the powder’s properties?

Store the powder in a cool, dry environment, sealed in its original packaging or an airtight container to prevent moisture absorption and contamination. Exposure to humidity can lead to agglomeration, affecting the powder’s flowability and sintering behavior.

5. Are there any safety precautions required while handling this material?

While generally inert, the fine powder can pose a respiratory hazard if inhaled. Use in a well-ventilated area or fume hood, wear a dust mask, and avoid skin contact. Follow standard lab safety protocols for handling ceramic powders to minimize exposure risks.