Soil-to-Metal Friction, Soil Adhesion and Characterization of Nanosilica – Enhanced Coating Material for Cold-Rolled Steel

Philippine Journal of Agricultural and Biosystems Engineering; Job Jonas Ruzgal; Delfin Suministrado; Rossana Marie Amongo; Engelbert Peralta; Cesar Quicoy; Milagros Peralta

doi:10.48196/016.01.2020.01

Philippine Journal of Agricultural and Biosystems Engineering
Job Jonas Ruzgal University of the Philippines Los Baños
Delfin Suministrado University of the Philippines Los Baños
Rossana Marie Amongo University of the Philippines Los Baños
Engelbert Peralta University of the Philippines Los Baños
Cesar Quicoy University of the Philippines Los Baños
Milagros Peralta University of the Philippines Los Baños

DOI: https://doi.org/10.48196/016.01.2020.01

Keywords: soil-to-metal friction, soil adhesion, surface coating, nanosilica, nanotechnology

Abstract

A coating procedure that uses nanosilica as its precursor was developed and tested for its technical viability in reducing soil-to-metal friction and soil adhesion in cold rolled steels (CRS). This was in relation to the development of a nanosilica-based surface coating for the reduction of energy expenditure in tillage implements. CRS were dip–coated with sodium silicate hydrates to smoothen their surface. The nanosilica weight concentration (5%, 12.5% and 20%) and dipping time (5 min, 17.5 min and 30 min) in the silicate solution time varied among treatments. The coated CRS were oven dried, aged and dipped in a surface modifying agent (HMDS–Methanol Solution). Soil bin test using Maahas Clay showed that coating the CRS decreased soil-to-metal friction and adhesion coefficient by an average of 24.0% and 36.0%, respectively. Only the nanosilica concentration had a significant effect on soil-to-metal friction coefficient and adhesion coefficient. The optimum nanosilica weight concentration was at 5%. Surface characterization using Scanning Electron Microscope (SEM) showed that sodium silicate hydrates were deposited on the microscopic crevices. Hydration and deposition of the silicates created a thin film on of the CRS and increased the surface area-to-volume ratio of the silicas.

Citation:

RUZGAL, J. J., SUMINISTRADO, D., AMONGO, R. M., PERALTA, E., QUICOY, C., & PERALTA, M. (2020). Soil-to-Metal Friction, Soil Adhesion and Characterization of Nanosilica – Enhanced Coating Material for Cold-Rolled Steel. Philippine Journal of Agricultural and Biosystems Engineering, 16(1), 3–16. https://doi.org/10.48196/016.01.2020.01