Calcium zirconate powder is a high-performance ceramic material featuring a stable perovskite crystal structure. It is renowned for its exceptionally high melting point, outstanding thermal shock resistance, and excellent chemical inertness. Primarily serving as a key raw material, it finds extensive application in the production of advanced refractories, thermal barrier coatings, and functional ceramic components.
We professionally supply calcium zirconate micropowder and fine powder ranging from standard grade to ultra-high purity. We can customize specific particle size distributions and surface characteristics to meet your specific sintering processes or formulation requirements.
Extreme high-temperature resistance
Superior thermal shock resistance
Excellent chemical inertness
High purity grades
Excellent sintering activity
Advanced Refractories: Serves as a core aggregate or matrix component in manufacturing continuous casting nozzles, glass furnace linings, and ladle refractories, significantly enhancing erosion resistance, abrasion resistance, and service life.
Thermal Barrier Coatings: With its exceptionally low thermal conductivity and high-temperature phase stability, it serves as a candidate material for next-generation turbine blade coatings in engines, effectively protecting metal substrates and improving thermal efficiency.
Solid Electrolytes and Ceramic Membranes: In high-temperature fuel cells or oxygen sensors, its stable ionic conductivity makes it a potential solid electrolyte or dense oxygen-permeable membrane material for energy conversion and process control.
Advanced Structural Ceramics: As additives or primary phases, they are used to manufacture high-toughness, high-wear-resistant composite ceramic components such as cutting tools, bearings, and wear-resistant liners, improving material mechanical properties.
Electronic Ceramics and Microwave Dielectrics: Under specific compositions, they can be used to prepare microwave dielectric ceramics with low loss and stable frequency-temperature coefficients, meeting the miniaturization and high-performance requirements of 5G/6G communication devices.
Q1: What is the maximum safe operating temperature for calcium zirconate powder? Under what conditions might it fail?
A1: It maintains long-term safety in oxidizing atmospheres up to 1750°C+. However, decomposition or reactions may occur in strongly reducing atmospheres or at high temperatures with direct contact to elements like carbon or silicon. Careful environmental assessment is required.
Q2: What are the primary advantages of calcium zirconate over commonly used zirconia materials?
A2: Compared to zirconia, calcium zirconate’s key advantage lies in its lack of phase transition. It exhibits no crystalline transformation across the entire range from room temperature to its melting point, completely avoiding volume changes caused by phase transitions. This results in superior thermal shock resistance and dimensional stability.
Q3: How should I select the appropriate calcium zirconate powder particle size for my refractory formulation?
A3: Particle size selection requires balancing bulk density, sintering activity, and cost. Generally, a coarse-fine particle size distribution yields denser packing; finer powders exhibit higher sintering activity but incur increased costs. We offer multi-size products or can recommend optimal particle size combinations based on your formulation.
Q4: Are there special storage requirements for this powder?
A4: This product is chemically stable and should be stored sealed in a standard dry environment. However, as it is a fine powder, maintaining intact packaging is recommended to prevent moisture absorption and caking, ensuring its excellent flowability and dispersibility.
Each batch is supplied with:
Certificate of Analysis (COA)
Technical Data Sheet (TDS)
Material Safety Data Sheet (MSDS)
Third-party testing reports available upon request
We specialize in advanced ceramic powders, deeply understanding the core requirements of high-performance materials like calcium zirconate in demanding applications. We not only ensure each batch exhibits exceptional and consistent crystalline phases and physical properties through rigorous process control but also commit to providing customers with in-depth technical collaboration.
Molecular Formula: CaZrO₃
Molecular Weight: 167.23 g/mol
Appearance: White powder
Density: 5.73 g/cm³
Melting Point: 2,500 °C
Crystal Structure: Quadratic
Inner Packaging: Vacuum-sealed bags and boxed to prevent contamination and moisture.
Outer Packaging: Cartons or wooden crates selected based on size and weight.
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