What is Zirconium Tungstate?
Zirconium Tungstate
Zirconium Tungstate (ZrW2O8) for Negative Thermal Expansion (NTE) Systems, with inorganic particles.
Technical owner: Aurexene Materials Engineering Team · Last updated: 2026-07-25
ZrW2O8Zr(WO4)2zirconium tungstate NTE
What It Is Not
- Zirconium Tungstate is ZrW2O8, not zirconium tungstate phosphate or zirconium sulfate phosphate.
When Not to Use It
- Do not interpret the broad intrinsic literature NTE range as a continuous product service-temperature rating; 350 °C is a transient peak only for the supplied powder.
- Do not use ZrW2O8 without checking phase retention, dwell time, atmosphere, moisture, composite interface, and processing stability against the target CTE design.
- Do not use the material in aqueous processing outside pH 7-10 without surface-stability validation.
Intrinsic Screening Summary
- Identity screen
- ZrW2O8; White cubic framework oxide powder
- Intrinsic feature
- Low-energy framework modes contract the lattice on heating. The alpha-to-beta transition changes the NTE magnitude, while dwell time, atmosphere, matrix reaction, particle state, and phase retention govern whether research behavior survives processing.
- Material-level integration
- Track ZrW2O8 phase, particle-size distribution, host-matrix reaction, loading, dispersion, thermal history, and post-process CTE retention. Treat broad intrinsic research temperature ranges as measurement context, not service ratings for the supplied grade.
Application Fit
Material Identity & Specification Status
Approved values for Particle size, Purity, and Packaging are not published; confirm them during quotation or sample review.
| Property | Value |
|---|---|
| Composition | ZrW2O8 |
| CAS / identity | 16853-74-0 |
| Morphology | White cubic framework oxide powder |
| Density | 5.09 g/cm3 |
| Storage | Dry sealed container |
Why It Works
| Structure | Function | Mechanism |
|---|---|---|
| Cubic ZrW2O8 framework oxide; alpha and beta forms are separated by an order-disorder transition near 431 K. | Isotropic NTE route for CTE control in a compatible host matrix. | Low-energy framework modes contract the lattice on heating. The alpha-to-beta transition changes the NTE magnitude, while dwell time, atmosphere, matrix reaction, particle state, and phase retention govern whether research behavior survives processing. |
Compare Material Routes
| Material / Route | Decision Boundary |
|---|---|
| Zirconium Tungstate Phosphate | Zirconium Tungstate is the ZrW2O8 framework oxide with a well-documented intrinsic isotropic NTE mechanism. Zirconium Tungstate Phosphate is Zr2WP2O12, a distinct phosphate-bearing framework. CAS, density, phase behavior, processing history, and CTE evidence must remain material-specific. |
Technical Guides
| Technical Guide | Summary |
|---|---|
| How Phase Purity and Composition Determine the Useful NTE Temperature Window | How Phase Purity and Composition Determine the Useful NTE Temperature Window — a method-conditioned engineering guide for Negative Thermal Expansion (NTE) Systems covering structure-function behavior at the material, interface, and finished-system boundary, process limits, validation, and qualification boundaries. |
| Incorporating Zirconium, Vanadate, and Bismuth-Based NTE Materials into Host Matrices | Incorporating Zirconium, Vanadate, and Bismuth-Based NTE Materials into Host Matrices — a method-conditioned engineering guide for Negative Thermal Expansion (NTE) Systems covering structure-function behavior at the material, interface, and finished-system boundary, process limits, validation, and qualification boundaries. |
| Measuring Effective CTE in Powders, Pellets, Composites, Coatings, and Joined Assemblies | Measuring Effective CTE in Powders, Pellets, Composites, Coatings, and Joined Assemblies — a method-conditioned engineering guide for Negative Thermal Expansion (NTE) Systems covering structure-function behavior at the material, interface, and finished-system boundary, process limits, validation, and qualification boundaries. |
| Qualifying NTE Materials for Thermal Cycling, Dimensional Stability, and Production Variation | Qualifying NTE Materials for Thermal Cycling, Dimensional Stability, and Production Variation — a method-conditioned engineering guide for Negative Thermal Expansion (NTE) Systems covering structure-function behavior at the material, interface, and finished-system boundary, process limits, validation, and qualification boundaries. |
Documents & Inquiry
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Technical Data Sheet
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Safety Data Sheet
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Grade, Sample & Qualification Support
The Aurexene Materials Engineering Team can review the required form, host system, formulation or process, target, sample quantity, volume and timeline, and the grade-specific evidence needed before qualification.
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