China Ceramic Alumina Tube manufacturer

Refractory Shock Proof Silicon Nitride Si3N4 Ceramic Wafer

Product Details:
Place of Origin: China
Brand Name: Jinghui Ceramics
Certification: RoHS, REACH, ISO
Model Number: Customized
Payment & Shipping Terms:
Minimum Order Quantity: 1 piece per order
Price: Negotiable
Packaging Details: Export carton with wooden case
Delivery Time: 4~5 weeks after receiving the order
Payment Terms: T/T, Western Union, MoneyGram, Paypal, , L/C
Supply Ability: 10000 pieces per month

Detail Information

Product Name: Silicon Nitride Ceramic Wafer Color: Grey
Material: Silicon Nitride Density: Over 3.22g/cm3
Size: Max. OD 400mm Thickness: 0.30 Mm - 10 Mm
Feature: High Thermal Shock, High Hardness Usage: For Sintering Furnace And Kiln
High Light:

3.22g/cm3 thin film substrate


400mm sintered silicon carbide

Product Description

Refractory High Thermal Shock Custom Silicon Nitride Si3N4 Ceramic Wafer

The specification of the Si3N4 Ceramic wafer

1. The typical thickness of the silicon nitride substrate covers 0.30mm, 0.5mm, 0.635mm, 1.0mm
2. We are supplying with many round ceramic wafer, square & rectangular ceramic substrate
3. The biggest diameter of the round ceramic wafer can be up to 400mm in 3mm, 4mm, 5mm thick
4. The max. side-length of the square and rectangular ceramic substrate can be 400mm by 500mm
5. Surface treatment: it can be one-side, or double side polished to be Ra0.4 or better
The main features of the Si3N4 ceramic wafer
1. High thermal conductivity ( up to 70 W/m.k), 3 times that of alumina ceramic substrate;
2. The thermal expansion coefficient (3.1×10-6/℃) matches the semiconductor silicon material (3.5-4.0×10-6/℃);
3. The bending strength is higher than that of the alumina substrate, which is twice that of the alumina substrate;
4. Excellent electrical performance, with extremely high insulation resistance and low dielectric loss;
5. The compatibility of circuit materials is good, and multi-layer wiring can be performed to achieve miniaturization of the package;
6. High thermal shock resistance, from 0 ℃ to 200 ℃ and then cool down, repeat 10000 times;
7. Chemical resistance, resistant oxidization, acid, alkali corrosion, service life-span up to 10 years.

The description of the Si3N4 ceramic wafer

Silicon Nitride  (Si3N4) is a widely used technical ceramic material in the high-temperature application, it has high strength in both room temperature and high-temperature condition, the strength of silicon nitride can be kept up to 1200℃; the low coefficient of thermal expansion make it a ceramic material possessing excellent thermal shock resistance; at the same time, it also has good thermal conductivity.
Except for the excellent properties in the thermal application, silicon nitride also has a good mechanical, chemical, electrical properties. It has good strength, good flexural strength and wear resistance; it is a good performance electrical insulation ceramic

Property Datasheet of Si3N4 Ceramic Wafers and Ceramic Substrates

General Properties Unit Value
Mechanical Purity % ≥99
Volume Density g/cm3 ≥3.22
Color   Grey
Compressive Strength MPa ≥-2500
Bending Strength MPa 600
Elastic Modulus MPa 300
Fracture toughness Mpam1/2 7
Thermal Max. service temperature (Non-loading) 1300
Thermal Conductivity (25℃) W/m.k ≥70
Coefficient of Thermal Expansion (CTE) 1*10-6 m/k 3.1
Specific heat 1 x 103J/(kg·K) 0.5
Electrical Volume Resistivity (25℃) -
Insulation Breakdown KV/mm -
Dielectric constant (1Mhz) (E) 6


Our capability and strength

1.With 15 years of manufacturing experience in OEM, ODM


2. Powerful R&D, customized and mass production capability

Refractory Shock Proof Silicon Nitride Si3N4 Ceramic Wafer 0


Refractory Shock Proof Silicon Nitride Si3N4 Ceramic Wafer 1


3. In-house comprehensive manufacturing types of equipment       


Refractory Shock Proof Silicon Nitride Si3N4 Ceramic Wafer 2


4. Rigorous quality control system and processes

Refractory Shock Proof Silicon Nitride Si3N4 Ceramic Wafer 3

Refractory Shock Proof Silicon Nitride Si3N4 Ceramic Wafer 4

FAQs (Frequently Asked Questions)

Q1: Is it available to provide customized products?
A: We always support custom-made demand as per different materials, dimensions, and designs.

Q2. Are you a factory or trading company?
A: We are a  direct manufacturer of technical ceramic components. You are welcome to visit our factory.
Q3: When can I get the price?
A: We regularly quote within 24 hours after we get your inquiry. If you are in urgent need of getting the price.
Please call us or tell us in your email so that we will proceed with your inquiry as a priority.
Q4: How to ensure quality?
A: We have a complete strict quality-control system, including IQC, IPQC, QA, OQC per ISO9001: 2008
Q5: What other products are you dealing with?
A: We also focus on a variety of metalized ceramics, high precision zirconia ceramic parts, ceramic seals.

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