Hydroabrasive wear

In chemical process engineering, the most important instances of erosion are those where the fluid contains solid particles. If the fluid is a liquid, this type of wear is called hydroabrasive wear or scouring wear, and with gaseous fluids, it is called jet wear. In both types of wear, plowing is active as the essential mechanism, and with steeper angles of impact, there is an additional component causing destruction of the material. Chemical reactions can also occur. 

Since technical pure liquids usually contain very fine solid particles, it is often difficult in practice to differentiate between pure fluid erosion and so-called hydroabrasive wear. As with jet wear, the number, hardness, and velocity of entrained particles determine the extent to which the protective covering layer is removed and the extent of the pure metal wear. If mechanical stressing due to entrained particles is predominant, then hardness and strength are of decisive importance for metals (Sick 1972). 

Corrosion by Liquid Media The higher susceptibility of Si3N4 ceramics to corrosion by liquid media is already apparent from reports on hydroabrasive wear, which is much higher then the wear of SiC [55]. 

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