★ Flagship · Superfine Ceramic Powder

Silicon nitride powder,
purity ≥99.5%.

High-purity α/β-phase Si₃N₄ powder for advanced ceramics sintering, thermal spray coatings, and composite reinforcement. Purity ≥99.5%, low oxygen content for optimal sintering, D50 from 0.3µm. Batch-certified by XRF analysis.

≥99.5%

Purity

0.3–5µm

D50 Range

α/β Phase

Certified

Research-Grade

Quality

Request a Quote →Download Datasheet ↓

Si₃N₄ Powder · At a Glance

MaterialSi₃N₄

Purity≥99.5% (XRF)

Phaseα-phase >90% std.

D50 Range0.3–5µm custom

Oxygen ContentLow (sintering grade)

Batch CertXRF + PSD included

SampleFrom 100g

Certifications & Standards

ISO 9001IATF 16949CERoHS · REACHUL Recognized

01 · Powder Grades

Three Si₃N₄ powder grades.

Standard, high-purity, and ultra-fine grades cover sintering, thermal spray, and R&D applications. Custom D50 and phase ratios available on request.

★ Most Common

Standard Sintering Grade

α >90% · D50 0.5–2µm

⚫

Standard grade — SEM view

Purity≥99.5%

Phaseα >90% α-Si₃N₄

D500.5–2µm

D90<5µm

Oxygen≤1.5wt%

Use: Structural ceramics sintering · pressing · green machining

High-Purity Grade

α >95% · D50 0.3–1µm

🔬

HP grade — particle analysis

Purity≥99.8%

Phaseα >95% α-Si₃N₄

D500.3–1µm

D90<2µm

Oxygen≤0.8wt%

Use: High-strength sintering · semiconductor tooling

Ultra-Fine Grade

D50 <0.3µm · R&D

📦

Ultra-fine — packaging

Purity≥99.5%

Phaseα/β custom

D50<0.3µm

BET≥12m²/g

Packaging100g–1kg

Use: R&D · thermal spray · composite reinforcement

All Si₃N₄ powders: XRF purity cert · PSD report (D10/D50/D90) · SDS · lot traceability with every shipment.

02 · Datasheet & Downloads

Drawings, datasheets, and certs.

Everything your engineering and procurement teams need. Email engineering@ceramitell.com for STEP/DWG files.

📄

Product Datasheet

PDF · full specifications

Download PDF →

📐

2D / 3D Drawings

STEP · DWG · PDF · on request

Request files →

🛡️

Certification Files

ISO 9001 · CE · RoHS · REACH

Request scans →

03 · Certifications & Compliance

Certified for global markets.

All products shipped with certificate of conformity. Additional certification documentation available for OEM qualification programs.

ISO

ISO 9001 quality management system. Full lot traceability and PPAP-level documentation for OEM programs.

Quality System

CE marking for European Union shipments. Declaration of Conformity provided with CE-marked products.

European Union

RoHS

RoHS and REACH compliant. Material declarations available for restricted-substance compliance screening.

EU · Global

IATF

Produced in an IATF 16949 / ISO 9001 facility. PPAP documentation available for automotive-adjacent applications.

Quality System

04 · Get a Quote

Request a quote for Si₃N₄ powder.

Tell us your specification, dimensions, grade, and annual volume. Our engineers reply within one business day with a quote and matched datasheet.

Free samples, 48-hour dispatch on stock items — no MOQ.
Custom to drawing: DFM review in 48h, prototype in 14 days.
Direct manufacturer pricing — no trading layer.
ISO 9001 certified — full material certs with every shipment.

Free Quote · Reply in 24h

Request a quote

Specify grade (standard/high-purity/ultra-fine), D50 target, phase ratio, and annual volume (kg/yr).

05 · Engineering FAQ

The questions we get most.

What phase ratio is standard?

Standard grade: α-phase >90%, with the balance as β-Si₃N₄. β-phase and custom α/β blend available — specify your sintering route and we recommend the right ratio.

Can you hit a specific D50 target?

Yes — jet milling and air classification to D50 ±10% of target. Specify D50 and D90 at order. Particle size distribution (laser diffraction) included with every shipment.

Minimum order quantity?

Sample: 100g–1kg, no charge for qualification. Production minimum: 5kg. Bulk pricing from 50kg. Scale-up without chemistry change — critical for R&D-to-production transition.

What is the oxygen content?

Standard grade: ≤1.5 wt% oxygen. High-purity grade: ≤0.8 wt%. Low oxygen is critical for achieving high green density and preventing oxide-phase formation during sintering.

What documentation is supplied?

Certificate of analysis (purity by XRF, PSD by laser diffraction, phase by XRD), SDS, and lot traceability standard. ICP-MS trace element analysis available for semiconductor-grade applications.

Can you supply with sintering aids pre-mixed?

Yes — Si₃N₄ powder with Y₂O₃, Al₂O₃, or MgO sintering additives pre-mixed and milled to specified ratios. Available with minimum order — specify additive type and wt%.

06 · Related