What is Zirconium Tungstate Phosphate?
Zirconium Tungstate Phosphate
Zirconium Tungstate Phosphate is a Zr2WP2O12 framework ceramic in the zirconium NTE family. Tungstate-phosphate composition and linked composite sintering evidence distinguish it from sulfate-phosphate routes.
Technical owner: Aurexene Materials Engineering Team · Last updated: 2026-07-25
ZrW phosphatezirconium tungstate phosphate NTEzirconium phosphotungstateZr2WP2O12Zr2(WO4)(PO4)2Zr2P2WO12
What It Is Not
- Zirconium Tungstate Phosphate is not zirconium sulfate phosphate or ZrW2O8 zirconium tungstate.
- CAS 16853-74-0 and density 5.09 g/cm3 identify ZrW2O8, not Zr2WP2O12, and must not be copied to this material.
When Not to Use It
- Do not use the literature measurement range as a continuous-service rating; 350 °C is a transient peak only for the supplied powder.
- Do not use the material in aqueous processing outside pH 7-10 without surface-stability validation.
Intrinsic Screening Summary
- Identity screen
- Zr2(WO4)(PO4)2 (Zr2WP2O12); White orthorhombic ceramic powder
- Intrinsic feature
- Cooperative framework motion produces negative expansion, while the measured CTE also depends on milling, sintering, density, porosity, phase retention, and test range. Research specimens reported linear CTE values from -2.607 to -3.914 ppm/K; this is not an approved grade claim.
- Material-level integration
- Track Zr2WP2O12 phase, milling-dependent particle state, thermal history, composite constituents, sintering, and post-process phase retention. Keep ZrW2O8/Zr2WP2O12 composite evidence separate from the sulfate-phosphate route and from unverified product-grade claims.
Application Fit
Material Identity & Specification Status
Approved values for CAS / identity, Particle size, Density, Purity, and Packaging are not published; confirm them during quotation or sample review.
| Property | Value |
|---|---|
| Composition | Zr2(WO4)(PO4)2 (Zr2WP2O12) |
| Morphology | White orthorhombic ceramic powder |
| Storage | Dry sealed container |
Why It Works
| Structure | Function | Mechanism |
|---|---|---|
| Orthorhombic Zr2(WO4)(PO4)2 framework built from corner-sharing ZrO6 octahedra, WO4 tetrahedra, and PO4 tetrahedra. | Tungstate-phosphate NTE route for CTE control in a compatible host. | Cooperative framework motion produces negative expansion, while the measured CTE also depends on milling, sintering, density, porosity, phase retention, and test range. Research specimens reported linear CTE values from -2.607 to -3.914 ppm/K; this is not an approved grade claim. |
Compare Material Routes
| Material / Route | Decision Boundary |
|---|---|
| Zirconium Sulfate Phosphate | Zirconium Tungstate Phosphate is the Zr2WP2O12 tungsten-bearing route with linked ZrW2O8/Zr2WP2O12 composite-sintering evidence. Zirconium Sulfate Phosphate is alpha-Zr2SP2O12; compare composition, phase, particle state, and thermal history rather than treating both phosphate names as interchangeable. |
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
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