Products Thermal Equipment Thermal Elements molybdenum disilicide (MoSi2) heating element
molybdenum disilicide (MoSi2) heating element

Thermal Elements

molybdenum disilicide (MoSi2) heating element

Item Number : KT-MH

Price varies based on specs and customizations


hysical Properties
6.0±0.1 g/cm3
Bending Strength
500 MPa
Hardness
12 GPa
Compression Strength
>1500 MPa
Water Absorption
≤0.2%
Heated Elongation
4%
ISO & CE icon

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Introduction

Molybdenum disilicide (MoSi2) heating element is a high temperature resistant heating element made by molybdenum disilicide. When used in high-temperature oxidizing atmosphere, a layer of bright and dense silica (SiO2) glass film is formed on the surface, which can protect the inner layer of silicon molybdenum from oxidation. Therefore, molybdenum disilicide (MoSi2) heating element have unique high-temperature oxidation resistance.

Under the oxidation atmosphere, the maximum operating temperature is 1800 ℃. The resistance of the MoSi2 heating element increases rapidly with the increase of temperature. When the temperature is constant, the resistance value is stable. 

Under normal conditions, the element resistance does not change with the length of service time, the correct selection of the surface load of the electric heating element is the key to the service life of the silicon molybdenum bar electric heating element.

Application

Molybdenum dicilicide (MoSI2) heaters are widely used in metallurgy, steel making, glass, ceramics, refractories, crystals, electronic components, semiconductor materials, research, production and manufacturing and other fields, especially for the production of high-performance precision ceramics, high-grade artificial crystals, precision structural metal ceramics, glass fibers, optical fibers and high-grade alloy steel.

  • High-Temperature Furnace Operations: MoSi2 elements are crucial in the operation of high-temperature furnaces used in the production of ceramics, glass, and metals, where temperatures can reach up to 1800°C.
  • Laboratory Research: In scientific research, these elements are employed in laboratory furnaces for materials testing and synthesis at high temperatures.
  • Industrial Processing: They are integral in various industrial processes such as sintering, annealing, and heat treatment of materials.
  • Semiconductor Manufacturing: MoSi2 heating elements are used in the fabrication of semiconductors, where precise temperature control is vital.

Detail &Parts

Different types of molybdenum disilicide (MoSi2) heating element

molybdenum disilicide (MoSi2) heating element
molybdenum disilicide (MoSi2) 

Features 

  • Molybdenum Disilicide (MoSi2) Heating Elements are renowned for their exceptional performance in high-temperature environments, offering a range of benefits that make them a superior choice for various industrial applications. These elements are not only capable of operating at the highest temperatures but also exhibit remarkable durability and ease of use. Here are the key features that highlight the advantages of MoSi2 Heating Elements:
  • High Operating Temperatures: MoSi2 Heating Elements can withstand temperatures up to 1900°C in oxidizing atmospheres, making them ideal for processes requiring extreme heat. 
  • Stable Resistance: The stable resistance of MoSi2 elements allows for the connection of new and old elements in series without compromising performance. This feature is particularly beneficial for maintaining consistent heating conditions and prolonging the lifespan of the elements.
  • Thermal Cycling Resilience: These elements can undergo rapid thermal cycling without degradation, which is crucial for processes that require frequent temperature changes. This resilience ensures that the elements maintain their integrity and efficiency over time.
  • Ease of Replacement: MoSi2 Heating Elements are designed for easy replacement, even when the furnace is hot. This feature minimizes downtime and ensures that operations can continue smoothly without significant interruptions.
  • Long Inherent Life: With the longest inherent life among electric heating elements, MoSi2 elements offer a cost-effective solution by reducing the frequency of replacements and maintenance.
  • Oxidation Resistance: The formation of a protective quartz (SiO2) glass film on the surface of MoSi2 elements provides excellent oxidation resistance, safeguarding the elements from degradation in oxidizing atmospheres.
  • Versatile Shapes and Sizes: Available in straight, U-shaped, W-shaped, L-shaped, or custom bent configurations, these elements can be tailored to fit a wide range of furnace designs and operational requirements.

Characteristics

Chemistry Properties

Molybdenum disilicide heating elements have unique high-temperature oxidation resistance. When used in high-temperature oxidizing atmosphere, a layer of bright and dense silica (SiO2) glass film is formed on the surface, which can protect the inner layer of molybdenum disilicide heating elements from oxidation.  

Physical Properties

hysical Properties-g/cm3 Bending Strength-MPa Hardness -GPa Compression Strength-MPa Water Absorption-% Heated Elongation-%
6.0±0.1 500 12 >1500 ≤0.2% 4

Working performance in different atmospheres

Atmosphere T1700 T1800 T1850 T1900
Air 1700 1800 1830 1850
N2 Nitrogen 1600 1700 1700 1700
Ar Ne Argon, Helium 1600 1700 1700 1700
Dry Hydrogen (dew point)-80℃ 1150 1150 1150 1150
Wet Hydrogen (dew point)-20℃ 1450 1450 1450 1450
Exogas(e.g. 10% CO2, 50% CO, 15%H2) 1600 1700 1700 1700
Exogas(e.g. 40% CO2, 20% CO) 1400 1450 1450 1450
Cracked and partially burnt ammonia 1400 1450 1450 1450

How to mark the model of molybdenum disilicide (MoSi2) heating element?

the model of molybdenum disilicide (MoSi2) heating element

  • D1: Hot zone diameter
  • D2: Cold zone diameter
  • Le: Hot zone length
  • Lu: Cold zone length
  • A:  Gap distance 
  • Standard model number: D1/D2*Le*Lu*A
  • For example: D1=6mm, D2=12,Le=200mm,Lu=300mm,A=30mm
  • You can specify its model as: 6/12*200*300*30mm
D1 D2 Le Lu A
3mm 6mm 80-300mm 80-500mm 25mm
4mm 9mm 80-350mm 80-500mm 25mm
6mm 12mm 80-800mm 80-1000mm 25-60mm
7mm 12mm 80-800mm 80-1000mm 25-60mm
9mm 18mm 100-1200mm 100-2500mm 40-80mm
12mm 24mm 100-1500mm 100-1500mm 40-100mm

Dos and don'ts during the installation of molybdenum disilicide (MoSi2) heating element

Please click here for precautions when installing MoSi2 heating elements

Warnings

Operator safety is the top important issue! Please operate the equipment with cautions. Working with inflammable& explosive or toxic gases is very dangerous, operators must take all necessary precautions before starting the equipment. Working with positive pressure inside the reactors or chambers is dangerous, operator must fellow the safety procedures strictly. Extra caution must also be taken when operating with air-reactive materials, especially under vacuum. A leak can draw air into the apparatus and cause a violent reaction to occur.

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FAQ

What is a thermal element?

A thermal element is a device that converts electrical energy into heat in order to raise the temperature of an object or space. There are several types of thermal elements, including tubular heating elements, radiative heating elements, and combination heating element systems. Heat transfer occurs through thermal resistance and thermal capacitance, and there are three sources of heat: a power source, a temperature source, and fluid flow. Thermal elements are commonly used in laboratory equipment, as well as in various domestic and industrial applications.

How does a thermal element work?

A thermal element works by converting electrical energy into heat through the process of Joule heating. When an electric current flows through the element, it encounters resistance, and this results in heating of the element. Metal and ceramic heating elements operate on the principle of electric resistance heating, generating heat by resisting the flow of electricity through the material. The coefficient of electrical resistance of the material determines its ability to generate heat proportional to the amount of current flowing through it. The generated heat radiates outwards into the heat treatment chamber, making thermal elements a highly effective method of generating heat.

What are the advantages of using thermal elements?

Thermal elements offer several advantages in temperature measurement. Firstly, they have a wide temperature range, allowing for accurate measurements across a broad spectrum, from extremely low temperatures to high temperatures. They also have high sensitivity, meaning they can detect even small temperature changes. Additionally, thermal elements have excellent stability and repeatability, providing reliable and consistent temperature readings over time. They are rugged and durable, making them suitable for use in harsh environments. Thermal elements can also be easily integrated into various systems and instruments for temperature monitoring and control.

What are the different types of thermal elements?

There are several types of thermal elements, including thermocouples, resistance temperature detectors (RTDs), and thermistors. Thermocouples are made of two dissimilar metals joined together, and they generate a voltage proportional to the temperature difference between their junctions. RTDs are made of pure metals, such as platinum or copper, and their resistance changes with temperature. Thermistors are made of temperature-sensitive semiconducting materials and have a large change in resistance with temperature.

How should thermal elements be calibrated and maintained?

Calibration and maintenance of thermal elements are crucial to ensure their accuracy and reliability. Regular calibration should be performed using certified reference thermometers or temperature standards to verify the accuracy of temperature readings. Calibration intervals may vary depending on the application and industry requirements. Proper storage and handling of the thermal elements are important to prevent damage or contamination. It is recommended to protect the elements from extreme temperatures, moisture, and corrosive substances. Regular inspection of the element's connections, insulation, and protective sheaths should be carried out, and any damage or wear should be addressed promptly. Proper cleaning of the elements, if required, should be done following manufacturer guidelines. It is important to follow the manufacturer's recommendations for maintenance and consult with experts when necessary.
View more faqs for this product

4.7

out of

5

The molybdenum disilicide heating element arrived in record time. I was so impressed with the speed of delivery.

Zane Ross

4.8

out of

5

This product is worth every penny. It's a great value for the price, and its quality is exceptional.

Haris Javed

4.9

out of

5

I've been using the molybdenum disilicide heating element for a few months now, and it's still going strong. It's incredibly durable and long-lasting.

Karla Ingram

4.8

out of

5

The technological advancements in this heating element are remarkable. It's a game-changer in the industry.

Hussain Patel

4.7

out of

5

The molybdenum disilicide heating element is a reliable and efficient product. It has exceeded my expectations.

Mark Hughes

4.9

out of

5

I'm thoroughly impressed with the overall performance of the molybdenum disilicide heating element. It's a top-notch product.

Zainab Khan

4.8

out of

5

The heating element's stability and consistency are commendable. It's a solid choice for various applications.

Jose Garcia

4.7

out of

5

I highly recommend the molybdenum disilicide heating element to anyone seeking a high-quality and durable product.

Sophie Mitchell

4.9

out of

5

The heating element's versatility and adaptability make it suitable for a wide range of applications. It's a versatile product.

Yusuf Ahmed

4.8

out of

5

The molybdenum disilicide heating element's energy efficiency is impressive. It's a cost-effective solution for heating needs.

Maria Rodriguez

4.7

out of

5

The heating element's ease of installation and maintenance make it a user-friendly product. It's a breeze to set up and maintain.

Ali Hassan

4.9

out of

5

The molybdenum disilicide heating element's safety features are top-notch. It's a secure and reliable product.

Emma Jones

4.8

out of

5

The heating element's compact design and lightweight construction make it easy to handle and store. It's a space-saving solution.

Khalid Hussain

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