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Kayıt Tarihi: 22-Haziran-2025
Gönderilenler: 117
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| Gönderen: 09-Temmuz-2025 Saat 17:30 | Kayıtlı IP
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Tantalum metal pitot probes are great against strong
acids especially hydrofluoric acid (HF) making them
useful in chemical processing and semiconductor
manufacturing.
5-
Hole Pitotwelcome to click on the website to
learn more!
Tantalum’s corrosion resistance comes from its dense
oxide layer (Ta??O??) which resists HF even at high
concentrations (40-70%). Tests in 50% HF at 80°C showed
tantalum probes corroded <0.001mm/year, Hastelloy C-276
corroded 0.5mm/year, stainless steel failed in hours.
This resistance works for other strong acids too hot
sulfuric (98%) and nitric (70%) acids with corrosion
rates <0.01mm/year. A fertilizer plant test found
tantalum probes in 93% sulfuric acid stayed accurate for
3 years, nickel-alloy probes needed replacing every 6
months.
Tantalum is ductile so can be thin-walled (0.3-0.5mm)
reducing flow disturbance in narrow pipes. In a 25mm HF
pipeline a 3mm tantalum probe caused 2% pressure drop, a
thicker Hastelloy one caused 5%.
But tantalum is expensive (5-10x Hastelloy) and
reacts with strong alkalis, so only use in acidic
environments. For HF or high acid apps its performance is
worth the cost.
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ASPTurkiye.com Forum : ASP / ASP.NET
Konu: Tantalum Metal Pitot Probes Acid Corrosio
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