fine ceramics

Alumina Crucibles (Al2O3) Covered Thermal Analysis / TGA / DTA

Name: Alumina Crucibles (Al2O3) Covered Thermal Analysis / TGA / DTA
Brand: Kintek Solution
SKU: KM-C04
Rating: 4.76 (8 reviews)

Item Number : KM-C04

Price varies based on specs and customizations

Material: Aluminum oxide
Specification: See the form

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Application

Thermal analysis is a technique used to study the physical and chemical properties of materials as their temperature changes. It provides information on phase transitions, decompositions, reactions, and other thermal events. A corundum alumina crucible is a crucible made of either corundum or alumina (two forms of alumina). Corundum is a crystalline form of alumina, and these materials are known for their high melting point, excellent thermal stability and resistance to chemical attack. The use of corundum alumina crucibles in TGA/DTA experiments enables high temperature analysis of samples. Crucibles are used as containers for sample material and are able to withstand the high temperatures involved in the analysis. It provides a stable environment for the sample during heating and cooling cycles, ensuring accurate measurements and preventing contamination.

Corundum alumina crucibles are commonly used for thermal analysis, especially TGA/DTA experiments where high temperature and thermal stability are required. They have applications in various industries and fields of research, including:

Materials Science: Corundum alumina crucibles are commonly used to analyze the thermal behavior, phase transition, decomposition and reaction of various materials.
Metallurgy: Used to study the thermal properties and behavior of metals and alloys, including melting and solidification processes, phase transformations, and thermal stability of metallic materials.
Catalyst characterization: A corundum alumina crucible was used to investigate the thermal stability, activation and degradation of catalyst materials under different temperature conditions.
Environmental Science: These crucibles are used in environmental research to study the thermal behavior and decomposition of organic and inorganic compounds, pollutants and waste materials.
Pharmaceutical and chemical industry: for analyzing the thermal properties and stability of pharmaceutical compounds, chemicals and additives to ensure their quality and suitability for various applications.
Quality Control and Research: Analyze the thermal properties of materials, study their thermal stability, and determine the presence of impurities or contaminants.

Detail & Parts

Thermal Analysis TGA/DTA Corundum Alumina Crucible detail 2

Thermal Analysis TGA/DTA Corundum Alumina Crucible detail 3

Thermal Analysis TGA/DTA Corundum Alumina Crucible detail 4

Thermal Analysis TGA/DTA Corundum Alumina Crucible detail 5 — Left: Fine Grinding / Right: Regular

Fine grinding	Alumina content: 99.5%	Alumina content is high in purity,Relatively low alumina content.	Color: pure white	High-purity alumina is slightly yellowed after firing	Fine grinding outer circle	Precise size, fine processing, no impurity particles
Regular	Alumina content:95%	less interference to the experiment	Color: yellowish	95% alumina is pure white in color after firing	Unground outer circle	Regular for thermal analysis, not finely ground

Technical specifications

ф 5x2.5 regular models	ф 10x10 Regular	Ф6.5x4 fine grinding	Ф5x5 conventional	Ф5mm cover fine grinding	ф 6.8x4 regular model	Ф5.88x12.77 fine grinding	Ф6x4 fine grinding
ф 6x4.5 regular models	Ф5x3 fine grinding	ф 12x12 Regular	Ф6.5x8 fine grinding	Ф5x8 Regular	ф 6mm lid fine grinding	ф 7x4 conventional	Ф9x4 Regular
Ф9x4 fine grinding	ф 6.5x4 regular model	Ф5x4 fine grinding	ф 5mm lid regular type	ф 6.5x10 fine grinding	Ф5.3x3.5 fine grinding	ф 6.8mm lid fine grinding
Ф5x2.5 fine grinding	Ф10x10 fine grinding	ф 6.5x8 regular model	Ф5x5 fine grinding	ф6mm cover regular type	Ф6.8x4 fine grinding	ф 6x4 conventional
Ф6x4.5 fine grinding	Ф5x4 conventional	ф 12x12 fine grinding	ф 6.5x10 regular models	Ф5x8 fine grinding	Ф6.8mm cover regular type	Ф7x4 fine grinding

The crucibles we show are available in different sizes and custom sizes are available on request.

Advantages

High temperature resistance: Suitable for analysis of high melting point materials or materials that undergo thermal events at high temperatures.
Thermal Stability: They maintain structural integrity and do not undergo significant deformation or degradation when exposed to high temperatures.
Chemically inert: Helps prevent sample contamination and ensures the integrity of experimental results.
Thermal Shock Resistance: They can withstand rapid temperature changes without cracking or cracking. This property is important when performing heating and cooling cycles during TGA/DTA experiments.
Durability: They can be reused many times, reducing the cost of analysis compared to disposable crucibles.
Good thermal conductivity: It can make effective heat transfer between the sample and the surrounding environment. Helps achieve precise temperature control and precise measurements.

Overall, the advantages of corundum alumina crucibles make them ideal for high temperature thermal analysis applications where stability, chemical resistance, and reliability are key factors.

FAQ

What are thermal evaporation sources?

Thermal evaporation sources are devices used in thermal evaporation systems to deposit thin films onto substrates. They work by heating a material (evaporant) to high temperatures, causing it to evaporate and then condense onto a substrate, forming a thin film.

What are the common applications of alumina crucibles?

Alumina crucibles have diverse applications in industries such as metallurgy, ceramics, chemistry, and materials research. They are commonly used for high-temperature processes, including melting, calcination, and sintering of metals, alloys, and ceramics. Alumina crucibles are also utilized in the production of catalysts, glass, and advanced materials. In laboratories, they are used for sample preparation, heating, and chemical reactions. Additionally, alumina crucibles find applications in thermal analysis techniques such as differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA).

What are the advantages of using ceramic crucibles?

Ceramic crucibles offer several advantages over other types of crucibles. Firstly, they have excellent thermal resistance, allowing them to withstand high temperatures without cracking or warping. Ceramic crucibles are also chemically inert, meaning they do not react with most substances, making them suitable for a wide range of applications. They are also non-porous, ensuring that there is no contamination or absorption of materials during heating or melting processes. Ceramic crucibles are highly durable and long-lasting, making them a reliable choice for repeated use. Additionally, ceramic crucibles can be manufactured in various shapes and sizes to accommodate different experimental or industrial requirements.

How are high-purity graphite crucibles made?

High-purity graphite crucibles are typically manufactured through a process called isostatic pressing. In this method, graphite powder is placed in a rubber mold, and then subjected to high pressure from all directions. This pressure compacts the graphite particles into a dense and uniform crucible shape. The crucible is then heated to a high temperature to remove any impurities and improve its purity.

What are the main types of thermal evaporation sources?

The main types of thermal evaporation sources include resistive evaporation sources, electron-beam evaporation sources, and flash evaporation sources. Each type uses different methods to heat the evaporant, such as resistive heating, electron beam heating, or direct contact with a hot surface.

What are the advantages of using alumina crucibles?

Alumina crucibles offer several advantages in high-temperature applications. Firstly, they have excellent thermal shock resistance, allowing them to withstand rapid heating and cooling without cracking. Alumina crucibles also have high chemical resistance, making them suitable for use with acids, bases, and other corrosive materials. They have low electrical conductivity, which is beneficial for preventing electrical interference in certain applications. Alumina crucibles are also inert and do not react with most substances, ensuring the purity of the materials being processed. Additionally, they have a long lifespan and can withstand repeated use at high temperatures.

What are some common uses of ceramic crucibles?

Ceramic crucibles have a wide range of applications across various industries. They are commonly used in laboratories for heating, melting, or calcining substances during experiments or sample preparations. Ceramic crucibles are also widely used in metal casting and alloy production processes, as they can withstand the high temperatures required for melting metals. They are used in the production of ceramics, glass, and semiconductors, where precise temperature control and chemical resistance are crucial. Additionally, ceramic crucibles find applications in the pharmaceutical and chemical industries, as well as in research and development, where they are used for analyzing and testing materials under extreme temperature conditions.

What are the common applications of high-purity graphite crucibles?

High-purity graphite crucibles have a wide range of applications in industries such as metallurgy, foundries, and laboratories. They are commonly used for melting and casting non-ferrous metals, including aluminum, copper, and precious metals. High-purity graphite crucibles are also utilized in the production of alloys and high-temperature ceramics. They are essential in processes such as chemical analysis, spectroscopy, and sample preparation in laboratories. Additionally, these crucibles find applications in the semiconductor industry for the melting and growing of silicon and other semiconductor materials.

How do thermal evaporation sources work?

Thermal evaporation sources work by passing electrical current through a resistive material, which heats up to high temperatures. This heat is transferred to the evaporant, causing it to melt and vaporize. The vapor then travels through a vacuum chamber and condenses onto a substrate, forming a thin film.

How should alumina crucibles be handled and maintained?

Proper handling and maintenance of alumina crucibles are crucial to ensure their longevity and optimal performance. When handling, it is important to avoid dropping or impacting the crucibles to prevent cracking or damage. They should be stored in a clean and dry environment to avoid contamination. Regular cleaning of the crucibles is necessary to remove any residual materials or impurities. This can be done using a soft brush, mild detergent, or solvents suitable for alumina. It is recommended to preheat the crucibles before use, especially when subjected to rapid temperature changes, to prevent thermal shock. Crucibles should be inspected for cracks, erosion, or other damage, and if any issues are found, they should be replaced to maintain the quality of the materials being processed. Following the manufacturer's guidelines for maintenance and handling is essential.

How can I choose the right ceramic crucible for my application?

When choosing a ceramic crucible for a specific application, several factors should be considered. Firstly, the temperature range required for the application should be determined, as different types of ceramics have varying maximum temperature limits. It is important to select a crucible that can withstand the expected temperature without deformation or damage. Secondly, the size and capacity of the crucible should be considered to ensure it can accommodate the required quantity of material. The shape and design of the crucible should also be compatible with the experimental setup or industrial process. Additionally, the chemical compatibility of the crucible with the substances being used should be assessed to ensure there will be no adverse reactions or contamination. Consulting with suppliers or experts in the field can help in selecting the most suitable ceramic crucible for specific applications.

What factors should be considered when selecting high-purity graphite crucibles?

When selecting high-purity graphite crucibles, several factors should be considered. Firstly, the size and capacity of the crucible should align with the intended application and the amount of material to be melted or processed. The crucible's thermal conductivity, thermal shock resistance, and chemical compatibility should be evaluated to ensure they meet the specific process requirements. It is important to select crucibles made from high-quality graphite material with high purity levels to minimize contamination and ensure excellent performance. The crucible's design and construction should also be considered, such as the presence of handles or pouring spouts for easy handling. Additionally, it is advisable to consult with manufacturers or experts in the field to ensure the selection of the most suitable high-purity graphite crucibles for specific applications.

What are the advantages of using thermal evaporation sources?

The advantages of thermal evaporation sources include high deposition rates, good directionality, excellent uniformity, and compatibility with various materials. They are also relatively simple and affordable, making them suitable for a wide range of applications in thin film deposition.

What are the common materials used for evaporating crucibles?

Evaporating crucibles are commonly made from materials such as tungsten, tantalum, molybdenum, graphite, or ceramic compounds. These materials have high melting points and good thermal conductivity, making them suitable for the high-temperature conditions required during evaporation. The choice of crucible material depends on factors such as the evaporant material, desired film properties, and process parameters.

How should ceramic crucibles be handled and maintained?

Proper handling and maintenance of ceramic crucibles are essential to ensure their longevity and performance. When handling ceramic crucibles, it is important to avoid dropping them or subjecting them to sudden temperature changes, as this can cause thermal shock and result in cracking or breakage. It is advisable to use appropriate tools, such as tongs or gloves, for handling hot crucibles. After use, ceramic crucibles should be allowed to cool down gradually before cleaning. Cleaning can be done using warm water and mild detergent, followed by rinsing and drying thoroughly. It is important to avoid using harsh chemicals or abrasive materials that can damage the ceramic surface. Regular inspection should be carried out to check for any signs of wear, cracks, or discoloration, and damaged crucibles should be replaced to ensure safety and accuracy in experiments or industrial processes.

What applications are thermal evaporation sources used for?

Thermal evaporation sources are used in various applications such as the production of optical coatings, semiconductor devices, and various types of thin films. They are particularly useful in industries that require precise control over the deposition of materials onto substrates.

What are the advantages of using evaporating crucibles?

Evaporating crucibles offer several advantages in thin film deposition processes. They provide a controlled environment for the evaporation of materials, allowing for precise control over film thickness and uniformity. Crucibles can withstand high temperatures and provide efficient heat transfer, ensuring consistent evaporation rates. They are available in various sizes and shapes to accommodate different evaporation systems and substrate configurations. Evaporating crucibles also allow for the deposition of a wide range of materials, including metals, semiconductors, and ceramics. They can be easily loaded and unloaded, facilitating quick material changes or process adjustments. Overall, evaporating crucibles are essential tools in thin film deposition techniques, offering versatility, reliability, and reproducibility.

How should evaporating crucibles be handled and maintained?

Evaporating crucibles should be handled and maintained with care to ensure their longevity and performance. Crucibles should be cleaned thoroughly before each use to remove any residual material from previous depositions. Avoid using abrasive materials that could damage the crucible's surface. During loading and unloading, handle crucibles with clean gloves or specialized tools to prevent contamination. When not in use, store crucibles in a dry and clean environment to avoid corrosion or degradation. Regular inspection of crucibles for cracks, defects, or signs of wear is important to prevent unexpected failures during the evaporation process. Follow the manufacturer's recommendations for any specific maintenance procedures, such as annealing or surface treatment, to prolong the crucible's lifespan.

View more faqs for this product

4.9

out of

5

These crucibles are an excellent choice for high-temperature analysis. They're durable, accurate, and can withstand rapid temperature changes.

Marie-Laure Giguère

4.8

out of

5

The crucibles arrived quickly and were well-packaged. They're exactly as described and have performed flawlessly in our experiments.

Park Min-seo

4.7

out of

5

These crucibles are a great value for the price. They're made of high-quality materials and have lasted through multiple experiments.

Ivan Ljubicic

4.6

out of

5

I'm very happy with these crucibles. They're easy to use and clean, and they've given me consistent results.

Laura Martinelli

4.7

out of

5

These crucibles are a great addition to our lab. They're durable and accurate, and they've helped us to improve the quality of our research.

Liviu Popa

4.8

out of

5

I highly recommend these crucibles. They're a great value for the price and have performed flawlessly in our experiments.

Salah Bennaceur

4.9

out of

5

These crucibles are a must-have for any lab that does high-temperature analysis. They're durable, accurate, and easy to use.

Niklas Karlsson

4.7

out of

5

I'm very impressed with these crucibles. They're well-made and have given me consistent results in my experiments.

Maria Rodriguez

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