Silicon Nitride Crucible

Categories Ceramics Materials, Silicon Nitride

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Additional information

Material	Si3N4
Maximum Operating Temperature	1300~1600 ℃
Density	3.15-3.25 g/cm3
Flexural Strength	650Mpa
Bending Strength	≥900MPa
Compression Strength	154MPa
Hardness	92~94HRA
Thermal Conductivity (under 1500℃)	23-25W/m℃
Fracture Toughness	6.5MPa m1/2
Young’s Modulus	290Gpa

Description:

Premium Silicon Nitride Crucibles for Demanding Applications
Superior Chemical Resistance & Thermal Stability

Manufactured with advanced gas pressure sintering technology, our high-performance silicon nitride crucibles deliver outstanding durability and reliability under the most challenging conditions.

Key Features

Exceptional Chemical Resistance

Withstands aggressive acids, including boiling hydrochloric acid, concentrated nitric acid, aqua regia, sulfuric acid, and aluminum hydroxide solutions (<25%).
Resists weak alkaline corrosion.

Outstanding Thermal Properties

Maintains structural integrity in oxidizing atmospheres up to 1200 °C.
Excellent oxidation resistance for long-term high-temperature applications.

Advantages in Metal Processing

Non-wetting surface ensures clean and efficient molten metal handling.
Compatible with a wide range of molten metals, including zinc, gold, silver, aluminum, cadmium, indium, lead, bismuth, gallium, and germanium.
Resistant to corrosion from metal alloys such as brass (yellow copper), duralumin (hard aluminum), and nickel silver.

Applications:

Silicon nitride crucibles are widely used in demanding high-temperature environments where thermal stability, chemical resistance, and purity are critical.

Metallurgy & High-Temperature Melting:
Ideal for melting and casting reactive metals such as titanium alloys, nickel-based superalloys, and advanced aluminum alloys, with excellent thermal shock resistance and low contamination.
Advanced Ceramics Manufacturing:
Used for sintering, firing, and melting processes, with strong chemical inertness to maintain ceramic purity and consistency.
Laboratory & Chemical Analysis:
Suitable for high-temperature testing, sample preparation, and thermal experiments, offering high purity and contamination resistance.
Semiconductor & Crystal Growth:
Applied in high-purity environments and crystal growth processes, providing excellent thermal stability and minimal contamination.

Custom sizes and specifications are available to meet specific industrial and research requirements.

Why Choose Silicon Nitride?

Longer service life compared to alumina or zirconia crucibles
Minimal contamination risk, ensuring purity of molten materials
Energy-efficient thermal properties for improved process efficiency

Packing of Silicon Nitride Crucibles

As a ceramic material, it can be fragile under certain conditions. Our Silicon Nitride Crucibles are carefully handled to minimize the risk of damage during storage and transportation. We use suitable outer cartons and high-quality inner cushioning materials to protect each crucible. For some parts, vacuum packing is also employed to ensure maximum protection and maintain product integrity.