Atomfair Gadolinium Disilicide Powder (GdSi₂), 99.9% Purity, -100 to -325 Mesh
Product Description
Atomfair gadolinium disilicide (GdSi₂) is supplied in powder form at 99.9% purity and is available in mesh grades from -100 to -325 mesh.
Technical Specifications
| PARAMETER DETAILS | |
|---|---|
| Product | Gadolinium Disilicide Powder (GdSi2) |
| Material | Gadolinium Disilicide |
| Chemical Formula | GdSi2 |
| CAS Number | 12134-75-7 |
| Purity | 99.9% |
| Particle Size / Specification | Available mesh grades: -100 to -325 mesh |
| Physical State | Powder |
| Molecular Weight | 213.5163 g/mol |
| Density | 5.9 g/cm³ |
| EINECS Number | 235-216-6 |
Customization & Ordering
For custom specifications, quantities, or packaging, submit the required details through Request a Quote.
Key Features and Advantages
- Available in mesh grades from -100 to -325 mesh.
- Molecular Weight: 213.5163 g/mol.
DOCUMENTATION: COA and SDS can be provided upon request for batch-specific confirmation.
TAILORED SOLUTIONS FOR RESEARCH
For specification review and quotation support, contact the Atomfair team.
What is the typical particle size distribution for Atomfair GdSi₂ powder at -100 to -325 mesh, and how does it affect sintering behavior in silicide-based thermoelectric composites?
The powder is available in mesh grades from -100 to -325 mesh, corresponding to a particle size range of approximately 149 to 44 microns. This broad distribution can influence green density and sintering kinetics; finer fractions (-325 mesh) generally promote higher densification rates and more homogeneous microstructures in spark plasma sintering or hot pressing of GdSi₂-based thermoelectric legs, while coarser fractions may be preferred for controlled porosity or specific grain boundary engineering.
Can this 99.9% purity GdSi₂ powder be directly integrated into a high-temperature vacuum or inert-atmosphere furnace without additional pre-treatment for oxide removal?
While the powder is supplied at 99.9% purity, rare-earth silicides like GdSi₂ are prone to surface oxidation upon exposure to ambient air. The product description does not specify a passivation or pre-reduction step; therefore, researchers should anticipate performing a brief hydrogen reduction or vacuum degassing cycle at 400–600°C prior to consolidation to minimize oxide contamination at grain boundaries, which can degrade thermoelectric figure of merit (ZT).
What are the recommended storage and handling conditions to maintain the specified 99.9% purity and prevent hydrolysis of GdSi₂ powder?
Gadolinium disilicide is moisture-sensitive and can undergo slow hydrolysis, forming gadolinium hydroxide and silane gas. The product should be stored in an argon-filled glovebox with <0.1 ppm O₂ and H₂O, or in a sealed container with desiccant under vacuum. The provided SDS (available upon request) should be consulted for specific handling protocols; no explicit storage conditions are stated in the product description, so standard inert-atmosphere practices for rare-earth silicides are strongly advised.
GdSi2 powder is supplied at 99.9% purity as a -100 to -325 mesh powder with defined molecular weight (213.5163 g/mol) and density (5.9 g/cm3), giving researchers a characterized rare-earth silicide precursor; package options of 5g, 25g, and 100g support small-batch work, while COA and SDS require an explicit request.
Positive
- High Purity with Defined Material Identity: GdSi2 is provided at 99.9% purity with CAS 12134-75-7, molecular weight 213.5163 g/mol, and density 5.9 g/cm3, enabling accurate stoichiometric and physical-property calculations.
- Stated Powder Particle Size Range: The -100 to -325 mesh specification defines the supplied particle-size window, providing a starting point for assessing surface-area behavior in synthesis or consolidation experiments.
Trade-offs
- Batch Documentation Requires Explicit Request: COA and SDS are described as available upon request rather than included by default, so batch-specific purity confirmation and safety data must be actively requested from Atomfair.
Every advanced material, component, equipment, and instrument in our catalog is backed by rigorous testing. We maintain strict internal quality management frameworks and align with CE conformity metrics to deliver transparent, reproducible performance data via our public open-science repository.
To request raw batch performance data, submit formal vendor registration paperwork, or execute a fast-turnaround R&D manufacturing loop, contact us at inquiry@atomfair.com.
Item is dispatched under the Atomfair Shipping & Delivery Framework (Free worldwide shipping on orders over $59 USD excl. heavy equipment). Return is governed by the Atomfair Return & Refund Policy (7-day technical return window).
