Description

Diyttrium Disilicate is an advanced inorganic compound with the chemical formula Y2Si2O7, known for its excellent thermal stability and unique optical properties. This material is critical for applications requiring high-performance ceramics and specialized glass formulations that operate under extreme conditions. It is primarily utilized by manufacturers in the advanced ceramics, phosphor, and optical coating industries seeking to enhance product durability and functionality.

Application

• Advanced Ceramic Matrix Composites (CMCs): Serves as a high-temperature reinforcement phase or sintering aid for silicon nitride and silicon carbide-based ceramics used in aerospace and turbine components.
• Phosphor Host Material: Acts as a lattice for rare-earth doped phosphors in solid-state lighting (LEDs) and display technologies, enabling precise color emission.
• Environmental Barrier Coatings (EBCs): Used in coatings to protect silicon-based ceramics in gas turbine engines from corrosion by water vapor.
• Optical and Laser Crystals: Employed in the synthesis of single crystals or polycrystalline forms for specialized optical applications.
• Refractory Materials: Incorporated into linings and components for high-temperature industrial furnaces due to its thermal shock resistance.
• Catalyst Support: Provides a stable, high-surface-area support for catalysts in certain petrochemical and synthesis processes.

Basic Information

Product Name	Diyttrium Disilicate
CAS No.	14286-95-4
Molecular Formula	Y2Si2O7
Molecular Weight	345.93 g/mol
Synonyms	Yttrium Disilicate; Diyttrium Pyrosilicate; Yttrium Pyrosilicate; Y2Si2O7; Yttrium Silicate (Y2Si2O7); Bis(oxosilanediolato) diyttrium; EINECS 238-210-9
EINECS	238-210-9

Quality Control

Our Diyttrium Disilicate is produced under controlled conditions to ensure batch-to-batch consistency and high purity. Quality is verified through a suite of analytical techniques including X-ray diffraction (XRD) for phase purity, inductively coupled plasma optical emission spectrometry (ICP-OES) for elemental composition, and laser particle size analysis. A Certificate of Analysis (COA) detailing all specifications is provided with each shipment to guarantee compliance with your technical requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). The product is hygroscopic (moisture-sensitive); keep the container tightly sealed in a dry environment to prevent absorption of atmospheric moisture, which can affect performance.

Specification

Item	Specification
Appearance	White to off-white powder
Phase Purity (XRD)	≥ 99.5% (β-Y2Si2O7 phase)
Purity (Y2O3 + SiO2, ICP-OES)	≥ 99.9%
Yttrium (Y) Content	50.0 - 51.0 %
Silicon (Si) Content	15.8 - 16.5 %
Particle Size (D50)	1.0 - 10.0 µm (customizable)
Specific Surface Area (BET)	2.0 - 8.0 m²/g
Loss on Ignition (LOI)	≤ 0.5 %

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.