What is Cu-Zn-V Complex Vanadate?
Cu-Zn-V Complex Vanadate
Cu-Zn-V Complex Vanadate is a Cu2-xZnxV2O7 material family for NTE systems. The reference high-NTE fine-particle phase is beta-Cu1.8Zn0.2V2O7; literature values remain phase- and process-specific.
Technical owner: Aurexene Materials Engineering Team · Last updated: 2026-07-25
copper zinc vanadium complex vanadateCu Zn V vanadateCu2-xZnxV2O7beta-Cu1.8Zn0.2V2O7
What It Is Not
- The beta-Cu1.8Zn0.2V2O7 high-NTE reference phase is not interchangeable with the alpha-Cu2-xZnxV2O7 solid-solution route.
When Not to Use It
- Do not assign the published -14.4 ppm/K value without confirming beta-phase identity and retained microstructure after milling and integration.
- 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
- Cu2-xZnxV2O7 family; beta-Cu1.8Zn0.2V2O7 is the reference high-NTE phase; White inorganic vanadate ceramic powder
- Intrinsic feature
- The strong beta-phase contraction is microstructure-dependent. Ball milling can weaken the NTE response, and annealing can partly restore it, so phase and microstructure must be rechecked after processing.
- Material-level integration
- Confirm exact Cu/Zn ratio, alpha or beta phase fraction, particle-size distribution, milling history, annealing history, and post-process CTE. Do not transfer the beta-Cu1.8Zn0.2V2O7 research CTE to an unidentified Cu2-xZnxV2O7 grade.
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 | Cu2-xZnxV2O7 family; beta-Cu1.8Zn0.2V2O7 is the reference high-NTE phase |
| Morphology | White inorganic vanadate ceramic powder |
| Storage | Dry sealed container |
Why It Works
| Structure | Function | Mechanism |
|---|---|---|
| Cu2-xZnxV2O7 material family; published high-NTE fine-particle reference is beta-Cu1.8Zn0.2V2O7. | Non-zirconium NTE route for CTE control where vanadate chemistry and color are acceptable. | The strong beta-phase contraction is microstructure-dependent. Ball milling can weaken the NTE response, and annealing can partly restore it, so phase and microstructure must be rechecked after processing. |
Compare Material Routes
| Material / Route | Decision Boundary |
|---|---|
| Zirconium Tungstate | The beta-Cu1.8Zn0.2V2O7 reference phase offers a non-zirconium microstructure-driven NTE route with research CTE near -14 ppm/K. Phase and microstructure can be disturbed by milling, and vanadate chemistry, color, regulatory documentation, and matrix compatibility require separate qualification. |
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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