Erosion of surfaces by solid particles

Development of a unique laboratory scale fluidized bed wear testing unit

“…The thermally hardened 4140 steel showed no improvement in wear resistance over the normalized material. This result was also obtained by Finnie et al for the erosion of 1045 steel [12]. Others have shown a slight increase in wear resistance for similar thermally treated materials tested under abrasive conditions [9 -11].…”

Slurry Erosion – Design of Test Devices

“…1). Degradation of materials due to slurry erosion depends on many factors, which can be divided onto three main groups: the first one connected with fluid flow conditions (flow velocity, angle of particle impingement, particles concentration, liquid density, liquid chemical activity, liquid temperature), the second one connected with solid particles (size, shape, hardness, strength) and the third one connected with target material (mechanical and endurance properties: toughness, fatigue, yield and ultimate strengths, work hardening, surface topography, microstructure, number and size of defects) [3,6,[9][10][11][12]. Thus, the numbers of factors influencing slurry erosion is very big and the degradation of materials is a synergic effect of all mentioned factors.…”

“…In 1960 Finnie [10] published his pioneer work about slurry erosion, in which degradation mechanisms and theoretical analyses for predicting erosion damage were presented. Although further work on improvement of theoretical considerations and extensive experimental investigations, slurry erosion remains the unsolved wear problem.…”

Solid particle erosion mechanisms of protective coatings for aerospace applications

“…Finnie et al [61] showed that annealed metals largely exhibited erosion rates inversely proportional to hardness measured prior to testing (see Figure 2.12 where the inverse of ER is plotted against H). However, it can be seen in the same figure that metals with a low rate of strain hardening, such as steels, show much higher ERs than predicted and that work hardening and heat treatment had largely no effect.…”