The Corrosion Chronicle: Heat Exchangers
Need to Extend the Life of Your Heat Exchangers?
When handling corrosive media like acids, chlorinated compounds, and vaporized fluids heat transfer can be a difficult task. Corrosion can cause loss of mechanical integrity and fouling. Fouling is the result of deposition of an undesired material on a surface. This can change the heat transfer coefficient of the surface and affect the performance of a heat exchanger. Special metal alloys such as C-276, titanium, Inconel®**, and tantalum have been used in critical process conditions to prevent corrosion and the resulting problems. Tantalum is recognized as the most corrosion resistant metal commercially available but its use for heat exchangers has been limited due to long lead-time and high cost. Deposition of a tantalum layer using the Tantaline® treatment process has been proven to have the same benefits of bulk tantalum with reduced lead-time and cost.
Tantaline® Treated OEM Parts: Heat Exchangers
The Chemical Vapor Deposition (CVD) process used by Tantaline produces a robust, uniform, tantalum layer that conforms to complex geometries and adheres to the base metal through diffusion bonding. Tantalum forms an inert oxide layer which prohibits corrosive attack by aggressive process fluids, even at elevated temperatures. This minimizes mechanical failure, cross contamination and fouling, which are critical issues for applications across a wide range of industries such as semiconductor and pharmaceutical manufacturing. Tantaline® treated heat exchangers have proven to be resistant to corrosion caused be many process fluids including HCl and H2SO4. Applying this unique surface treatment to Exergy's line of high quality, high performance heat exchangers provides a cost-effective solution for improved operational reliability.
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