Tribological properties of a silicone-based composite with inorganic additives
[ 1 ] Instytut Technologii Mechanicznej, Wydział Inżynierii Mechanicznej, Politechnika Poznańska | [ P ] employee
PL Właściwości tribologiczne kompozytu na osnowie silikonowej z nieorganicznymi dodatkami
2023
scientific article
english
- coefficient of friction
- wear
- silicone
- hexagonal boron nitride
- titanium
EN The paper presents the results of experimental studies, including tribological tests of silicone-based composites with additions of hexagonal boron nitride (hBN) and titanium (Ti). The tests were conducted on a Bruker UMT2 tribotester and using a pin-on-disk setup developed by the authors, without a lubricating medium, and they employed a steel ball made of 100Cr6 steel and a sample made of the composite. During the tests, the products were not removed from the contact area. The paper analyzes the influence of additives on the tribological properties of the composite, i.e., the coefficient of friction (COF) as a function of distance and the wear of the tested samples. In the case of samples containing hBN, the COF decreases with an increase in its content. After reaching a volumetric percentage concentration of 20%, it begins to stabilize with the increase in mass loss. The profiles of COF changes as a function of distance for samples with different additive contents are comparable. The self-lubricating properties of hBN have been confirmed. The addition of Ti reduces the COF value, which decreases with the increase in the Ti content. Samples with a mass percentage concentration exceeding 100% of the Ti content have a COF value equal to the initial value for silicone. The composite containing hBN has a lower COF value than samples with the Ti addition, and the wear tracks on their surface are narrower and shallower.
02.2024
79 - 90
CC BY-SA (attribution - share alike)
open journal
final published version
70