Short answer: Cavitation is the violent collapse of vapour bubbles on a metal surface that blasts away tiny particles, causing sponge-like erosion; it is avoided by good hydraulic design, smoother surfaces and cavitation-resistant alloys or coatings such as 316/duplex stainless and hardfacings.
At a Glance
How Cavitation Erodes Metal
Local pressure drops below vapour pressure, bubbles form, then implode against the surface with micro-jets that tear out metal — often capped by Pitting Corrosion Stainless Steel и Crevice Corrosion Stainless Steel in water. It is driven by the same electrochemistry as Galvanic Corrosion Guide and is severe in Seawater Corrosion Guide; baseline care is How To Prevent Metal Rust.
Vulnerable Components
Pump impellers, valve trims, propeller blades and turbine runners suffer most where flow accelerates. Material choice matters: Duplex Stainless Supplier, Градации нержавеющей стали с пояснениями и Stainless Steel 316 Properties resist chloride cavitation, while Copper Supplier и Brass Supplier serve specific duties. Context from Metal Powder Metallurgy Guide is not relevant here.
Mitigation
Improve hydraulic design, smooth bores, reduce cavitation number, and use hardfacing or ceramic/PU coatings via Metal Hardfacing Guide. Add Metal Corrosion Inhibitor Guide и Cathodic Protection Guide, and inspect with Metal Ndt Guide; certificate per Mill Test Certificate Guide.
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Tell HXSCO your requirements and we will respond with a competitive quote and lead time.
Часто задаваемые вопросы
Erosion from the collapse of vapour bubbles against a surface, blasting away tiny particles and leaving a rough, sponge-like worn area.
Pump impellers, valve trims, propeller and turbine blades — anywhere flow accelerates and local pressure drops below vapour pressure.
Hard, chloride-resistant alloys such as 316 and duplex stainless, plus hardfaced or ceramic/PU-coated surfaces; softer metals erode faster.
Better hydraulic design, smoother surfaces, lower cavitation number, resistant alloys/coatings and corrosion inhibitors in the fluid.
HXSCO supplies 316/duplex and hardfaced components with certificates for pump and marine cavitation duty.
Source Cavitation-Resistant Parts from HXSCO
HXSCO supplies 316/duplex and hardfaced components with certificates for pump and marine cavitation duty. Send your part, medium and quantity for a quote.