Wear-resistant and High-temperature Resistant Silicon Carbide Sintering Crucible

Introduction of Silicon Carbide Crucible

Silicon Carbide Crucible is a high-performance ceramic vessel made of Silicon Carbide (SiC), which is mainly used in processes such as high temperature melting, chemical reactions and material preparation. Silicon carbide is an advanced engineering ceramic material known for its high hardness, high thermal conductivity and thermal shock resistance. Silicon carbide crucibles are capable of maintaining stable physical and chemical properties under extremely high temperatures and corrosive environments, making them an important tool in high-temperature experiments and industrial production.

Features of Silicon Carbide Crucible

High hardness and wear resistance: The high hardness of silicon carbide, second only to diamond and cubic boron nitride, can effectively resist wear and prolong service life.

Excellent high-temperature resistance: able to work stably for a long time in high-temperature environments above 1600°C.

High thermal conductivity: excellent thermal conductivity, suitable for scenes requiring rapid heat dissipation.

Thermal shock resistance: able to withstand rapid temperature changes and suitable for frequent heating and cooling conditions.

Chemical Stability: Extremely resistant to acids, alkalis, and most molten metals.

Low coefficient of thermal expansion: good dimensional stability during temperature changes, reducing the risk of cracking due to thermal stress.

High mechanical strength: high flexural strength and fracture toughness, able to withstand large mechanical stresses.

Low contamination: no contamination of molten material during high temperature melting process, suitable for the preparation of high purity materials.

Parameters of Silicon Carbide Crucible

Specification	Description
Material	High-purity silicon carbide (SiC)
Crystal Structure	Polycrystalline (common types: 4H-SiC, 6H-SiC)
Density	~3.2 g/cm³
Maximum Operating Temperature	Up to 2200°C (depending on grade and application)
Thermal Conductivity	90-150 W/m·K at room temperature
Coefficient of Thermal Expansion	4.7 x 10⁻⁶ /°C (room temperature to 1000°C)
Young’s Modulus	400-450 GPa
Hardness (Vickers)	~25 GPa
Flexural Strength	400-700 MPa at room temperature
Compressive Strength	3000-4000 MPa
Oxidation Resistance	Excellent up to 2000°C in air; minimal oxidation at higher temperatures
Chemical Stability	Resistant to most acids, bases, and molten metals
Thermal Shock Resistance	Excellent, capable of withstanding rapid temperature changes
Surface Finish	Smooth, can be polished to mirror finish if required
Typical Dimensions	Customizable; common sizes range from small laboratory crucibles to large industrial crucibles (e.g., 50 mm to 500 mm diameter)
Weight	Varies based on size and thickness; lighter than many metal alternatives
Purity	>98% SiC, with controlled impurities for specific applications
Application	Semiconductor manufacturing, metallurgy, laboratory research, glass and ceramic industries
Manufacturing Process	Pressureless sintering, reaction bonding, hot pressing, or CVD (Chemical Vapor Deposition)
Color	Typically gray or black, depending on the manufacturing process
Standard Shapes	Cylindrical, conical, boat-shaped, custom designs available
Tolerance	±0.1 mm to ±0.5 mm (depending on size and complexity)
Service Life	Long-lasting, with proper handling and maintenance

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Applications of Silicon Carbide Crucible

Material science research: for high-temperature melting and preparation of high-purity metals, alloys, and ceramic materials; in the laboratory for high-temperature chemical reactions and crystal growth experiments.

Metallurgical industry: used for melting and purification of rare and precious metals (such as platinum, gold, silver, etc.); used as a melting container in the preparation of high-temperature alloys and special steel.

Electronics and semiconductor industry: for monocrystalline silicon, polycrystalline silicon and other semiconductor materials for high-temperature melting and purification; in the preparation of electronic ceramic materials as a high-temperature reaction vessel.

Glass and ceramic industry: used for glass melting and high temperature sintering of ceramic materials; used as a high temperature resistant container in the preparation of special glass and optical glass.

Nuclear energy field: for high-temperature experiments and research on nuclear fuel and related materials, as corrosion- and high-temperature-resistant containers in nuclear waste treatment.

Chemical industry: used for chemical reaction and material synthesis in high-temperature corrosive medium; used as a reaction vessel in catalyst preparation and high-temperature catalytic reaction.

Company Profile

RBOSCHCO is a trusted global chemical material supplier & manufacturer with over 12 years experience in providing super high-quality chemicals and Nanomaterials.

The company has a professional technical department and Quality Supervision Department, a well-equipped laboratory, and equipped with advanced testing equipment and after-sales customer service center.

If you are looking for high-quality Silicon Carbide Crucible please feel free to contact us or click on the needed products to send an inquiry. 

Payment Term

T/T, Western Union, Paypal, Credit Card etc.

Packing and Storage

The product is in powder form and should be stored in a cool, ventilated place. Avoid inhalation when using it and keep away from open flames, heat sources, etc.

Shipment Term

By air, by sea, by express, as customers request.

FAQs of Silicon Carbide Crucible

Question 1: What are the main characteristics of silicon carbide rods?

Answer: The main features of silicon carbide rods include High hardness and wear resistance. Silicon carbide has a high hardness, second only to diamond and cubic boron nitride, which can effectively resist wear and prolong service life. Excellent high-temperature resistance: able to work stably in high-temperature environments above 1600°C. High thermal conductivity: excellent thermal conductivity, suitable for scenes requiring rapid heat dissipation. Thermal shock resistance: able to withstand rapid temperature changes and suitable for frequent heating and cooling conditions. Chemical stability: Extremely resistant to acids, alkalis, and most molten metals.

Question 2: What are the applications of silicon carbide rods in high-temperature industry?

Answer: In the high-temperature industry, silicon carbide rods are mainly used in the following scenarios: High-temperature furnace heating element: Used as a heating element in melting furnaces, heat treatment furnaces, and sintering furnaces to provide a stable heat source. Support rods and protection tubes: These are used as support rods and thermocouple protection tubes in high-temperature furnaces to ensure stable equipment operation. Thermal protection components: In the aerospace field, they are used as high-temperature resistant components for engines and thermal protection systems.

QUESTION 3: Why are Silicon Carbide rods suitable for use in the electronics and semiconductor industries?

Answer: Silicon carbide rods are suitable for use in the electronics and semiconductor industries for a number of reasons, including High-temperature resistance and the ability to work stably in high-temperature environments in which semiconductor materials are melted and crystals are grown. Chemical stability: extremely resistant to chemicals used in the semiconductor manufacturing process. High thermal conductivity: able to dissipate heat quickly to ensure stable operation of equipment. Electrical insulation: Maintains good electrical insulation properties at high temperatures and is suitable for the manufacture of electronic components.

Question 4: What is the role of Silicon Carbide rods in the machinery and tooling industry?

Answer: In the machinery and tools industry, silicon carbide rods are mainly used in the following areas: Wear-resistant parts, such as bearings, guide rails, and cutting tools of high-precision machinery and equipment, to prolong service life. Wire guide rods and guide rollers: In the textile and paper industry, wear-resistant wire guide rods and guide rollers improve productivity. High-speed rotating equipment: used as support rods for high-speed rotating equipment to reduce friction and wear.

Question 5: How do you choose suitable silicon carbide rods?

Answer: The following factors need to be considered when selecting suitable silicon carbide rods: Operating temperature: Select heat-resistant silicon carbide rods with matching performance according to the maximum temperature of the use environment. Chemical environment: Consider the corrosiveness of the medium and select a silicon carbide rod with suitable chemical stability. Mechanical stress: High-strength silicon carbide rods should be selected based on the mechanical stress in the equipment (such as pressure and vibration). Size and precision: according to the requirements of the equipment, select the appropriate size and processing accuracy to ensure the reliability of installation and operation. Cost and life: Select cost-effective and long-lasting products within the budget.