Industrial manufacturing environments often rely on aggressive alkaline chemicals like sodium hydroxide (NaOH) and potassium hydroxide (KOH) for cleaning, processing, and production. These caustic solutions are effective at their jobs, but they can also be extremely demanding on equipment surfaces.
For many applications, corrosion resistance is only part of the equation. Components may also need to maintain hydrophobic, non-stick surface properties that reduce material adhesion, improve cleanability, and support long term process performance. Finding a surface that can do both has traditionally been a challenge.
To address this need, SilcoTek developed Dursan® 2500, a specialized CVD coating engineered for applications requiring exceptional resistance to harsh caustic environments while maintaining hydrophobic and low stick surface performance.
Dursan 2500 was specifically engineered for semiconductor epitaxial system corrosion control. Aggressive chemistries in these applications lead to metal pitting, particulate, and metal contamination. This causes tool downtime and expensive replacement/refurbishment.
Not every high pH application requires Dursan 2500. Many processes perform exceptionally well with other SilcoTek coatings. However, when applications combine aggressive caustic exposure with the need for a durable hydrophobic surface, traditional solutions may no longer provide the desired performance.
Dursan 2500 was specifically designed to fill these gaps.
Applied using SilcoTek's thermal chemical vapor deposition (CVD) process, Dursan 2500 is a hydrocarbon-functionalized carbosilane deposition that creates a conformal barrier of amorphous silicon, oxygen, and carbon that is functionalized to resist adsorption of corrosive, reactive, and other unwanted molecules. The result is a chemically protective surface that withstands harsh alkaline environments while retaining the hydrophobic characteristics needed for demanding processes.
In many industrial applications, maintaining a hydrophobic, non-stick surface is just as important as resisting corrosion.
Low surface energy can help minimize material adhesion, improve product release, simplify cleaning, and reduce the buildup of unwanted deposits. However, prolonged exposure to strong caustic chemistries can compromise these surface properties over time.
Dursan 2500 was designed to help preserve both chemical durability and hydrophobic performance, making it a ideal solution for applications where neither property can be sacrificed.
Many industries utilize sodium hydroxide and potassium hydroxide during manufacturing or routine cleaning. Dursan 2500 is designed for processes where these harsh chemicals are present and maintaining hydrophobic or anti-stick surface properties is critical.
Potential applications include:
In these environments, Dursan 2500 helps provide a durable protective surface that resists aggressive caustic exposure while supporting easier release, improved cleanability, and long term equipment performance.
Every SilcoTek coating is designed to solve a different surface engineering challenge.
For many applications, Dursan® continues to provide excellent corrosion resistance and hydrophobic performance. Siltride® offers unique surface characteristics for applications with different performance requirements. Dursan 2500 expands the portfolio by providing a specialized solution for processes that require both exceptional resistance to caustic chemistries and long lasting hydrophobic, non-stick performance.
Rather than replacing existing coatings, Dursan 2500 gives engineers, operators, and researchers another option when conditions exceed the capabilities of conventional surface treatments or when maintaining hydrophobicity in high pH environments is essential.
Like all SilcoTek coatings, Dursan 2500 is applied using thermal chemical vapor deposition (CVD), producing a thin, uniform coating over complex internal and external surfaces. The coating is compatible with stainless steel, exotic alloys, and ceramics and can be applied to intricate geometries without changing component dimensions. Typical coating thickness ranges from 100 - 1000 nm, with an allowable pH exposure of 0 - 14 and a hydrophobic contact angle of at least 80°.
Dursan 2500 is intended for specialized applications where surface performance depends on more than corrosion resistance alone.
If your process involves repeated exposure to sodium hydroxide, potassium hydroxide, caustic cleaning solutions, or alkaline process chemistries while also requiring a durable hydrophobic, anti-stick surface, Dursan 2500 may be the right solution.
Our technical team can help evaluate your application and recommend the coating that best meets your process requirements.
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