Products Lab Consumables & Materials Thin Film Deposition Parts High Purity Pure Graphite Crucible for Evaporation
High Purity Pure Graphite Crucible for Evaporation

Thin Film Deposition Parts

High Purity Pure Graphite Crucible for Evaporation

Item Number : KME07

Price varies based on specs and customizations


Material
Graphite
Accessories
optional (Ceramic Evaporation Boat Electrode Chuck)
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Application

Graphite evaporation crucibles are specialized vessels for high temperature applications, especially thin film deposition. These crucibles efficiently hold and evaporate materials at extreme temperatures, facilitating thin film deposition onto substrates. Graphite, known for its high thermal stability and excellent electrical conductivity, is the primary material used to manufacture these crucibles. Its thermal conductivity ensures efficient and uniform heating, resulting in a consistent vaporization rate.

  • Semiconductor manufacturing, optics, materials research.
  • Thermal evaporation, electron beam evaporation coating.
  • Physical vapor deposition (PVD), chemical vapor deposition (CVD).
  • Form thin films of metals, alloys, oxides and other materials on the substrate, plate germanium, and plate silicon.
  • Optical coating, aluminum coating of polyester film, vacuum coating.
  • Production of microelectronics, production of solar cells, wires and packaging materials, application of tube furnaces.

Detail & Parts

Graphite evaporation crucible detail 1

Graphite evaporation crucible detail 2

Graphite evaporation crucible detail 3

Graphite evaporation crucible

Ceramic Evaporation Boat Electrode Chuck Details
Ceramic Evaporation Boat Electrode Chuck

Ceramic Evaporation Boat Electrode Chuck details 2

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

Advantage

  • High temperature resistance, good thermal shock resistance, high thermal conductivity.
  • Polished surface, anti-oxidation, high purity, no pollution to the evaporation film.
  • It has strong corrosion resistance to acid and alkali liquids.
  • Good conductivity and thermal efficiency, chemical stability.
  • Resistance to mechanical shock, small coefficient of thermal expansion, long service life.
  • High strength, as the temperature increases, the strength of graphite increases.

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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.

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 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.

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.

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 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.

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.

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.
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High Purity Pure Graphite Crucible for Evaporation

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Thin Film Deposition Parts


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