Personal tools
You are here: Home : Engineering Design Guidelines : Erosion Resistant Ceramics

Erosion Resistant Ceramics

Erosion Resistant Material -- Hexoloy SiC

 

Erosion resistant material is less susceptible to the recession of surfaces caused by mechanical trauma resulting from suspended abrasive particles within a moving fluid.


The hardness of the impacted material plays a critical role in the mechanics of hard particle erosion. Softer materials erode fastest from glancing impacts, while harder materials erode fastest from perpendicular impacts. Higher hardness does not always guarantee better erosion resistance, however it is a correlative factor.


Erosion rate is affected by the impacting particle’s size, density, rotation, speed, and hardness. Erosion rate for solid particle impact is typically measured as mass of material removed divided by the mass of impacting material.

HexoloySiC - Resists Erosion, Corrosion, and Oxidation

 

The chemical inertness, high density, and low porosity of Hexoloy SiC (silicon carbide) allow it to perform in hot gas and liquid environments, oxidizing and corrosive atmospheres, and in strong acids and bases, even at extremely high temperatures.

Erosion Resistant Material - Hexoloy SP Silicon Carbide vs. Hexoloy SA Silicon Carbide

 

Hexoloy SA SiC, an exceptional erosion (and corrosion) resistant material, is a pressureless, sintered form of alpha silicon carbide. It has density greater than 98 percent theoretical and a very fine grain structure (less than 10µm). This grain structure enhances its wear resistance. Further, it has no free silicon making it highly chemically resistant in both reducing and oxidizing environments.

Hexoloy SP SiC possesses superior erosion resistant material over Hexoloy SA SiC. It is a sintered alpha silicon carbide material designed for optimal performance in sliding contact applications such as product lubricated bearings.

The key structural differentiator improving the erosion resistance of Hexoloy SP Si Cover Hexoloy SP SiC is addition of unique spherical pores within Hexoloy SP SiC. These discrete, evenly dispersed pores act as fluid or lubricant reservoirs helping to promote the retention of a fluid film at the interface of sliding component surfaces.

Learn more about erosion resistant material – Saint-Gobain Hexoloy SA SiC and Saint-Gobain Hexoloy SP SiC.