Investigation of erozive wear properties of basalt glass-ceramics

Keywords: Glass-ceramics, basalt, wear, solid particle erosion. In this study, erosive wear behaviors of commercially produced basalt glass-ceramics were investigated. Basalt glass-ceramics supplied in the form of plates (200 x 200 x 30 mm) were cut by ceramic cutters and prepared as laboratory scale (50 x 50 x 12 mm) test sample dimensions. Sodium feldspar, garnet and silicon carbide powders were selected as two different grain sizes and the erosion tests were carried out. In the solid particle erosion testing setup, mass flow rates of abrasion particles; sodium feldspar, garnet and silicon carbide were determined by erosion tests for 30 seconds at 1,5 - 3 and 4 bar pressures and these data were used in erosion rate calculations. The test specimens were adjusted to a distance of 20 mm between the nozzle having 7.8 mm diameter and the adjustable sample in the solid particle erosion test setup. The samples whose initial weights were determined were fixed on the sample fixture. The sample fixture was adjusted at 30° - 45° - 60° - 75° - 90° and the abrasive particles were subjected to solid particle erosion wear by spraying at 1.5 – 3 – 4 bar for 20 seconds, after the wear, sample weights were determined. The weight difference of the basalt glass-ceramic samples was calculated and the erosion rates were calculated by the formula. Macro images of the sample were taken and the data about eroded surfaces were obtained from the optical profilometer after the tests. According to the obtained data, the results were examined and solid particle erosion properties of basalt glassceramics against abrasive particles were evaluated. As a result of experimental studies, it was observed that the most abrasive particle was SiC. While it is seen that large grain size is effective in sodium feldspar particles on basalt glass-ceramics, it is observed that small grain sizes have a more erosive effect on garnet and silicon carbide particles. The wear effects increased with increasing particle pressure and generally, wear is more effective in tests performed at 60 ° impact angles.