Determination of chemical content of soil particle for abrasive wear test
¹Czech University of Life Sciences in Prague, Faculty of Engineering, Department of material Science and Manufacturing Technology, Kamýcka 129, CZ 165 21 Praha – Suchdol, Czech Republic
²Czech University of Life Sciences in Prague, Faculty of Engineering, Department of Electrical Engineering and Automation, Kamýcka 129, CZ 165 21Praha – Suchdol, Czech Republic
Soil is an extremely abrasive environment that causes a change in the part dimension of agricultural tools like as chisels or ploughshares. Dry rubber wheel test according to ASTM G65 is one of standard to wear testing. For this test is used Ottawa sand (SiO2 particles) which have a spherical shape. The actual soil contains sand, but also particles of other minerals with higher or lower abrasion than sand. This article is focuses on identifying the abrasive particles in the soil by electron microscopy with EDS analysis. The results should be used for mixing the abrasive particles to the rubber wheel test, but also to identify the mineral composition of the soil profile. The aim of the research is closer to the real test of wear on the field and laboratory tests on the device with a rubber disc. Results shown that the soil contents alumina oxide particles with high hardness or silumina complex chemical composition with sharp shape. The ratio of amount these abrasive particles in the soil is influenced by geological position in earth and this ratio of particle amount influence wear rate in actual soil.