The Influence of Multigraphene on the Durability of Hard Alloy Inserts.

Autor: Eremin, S. A., Anikin, V. N., Rudenko, D. V., Kolesnikova, A. M., Sobolev, Y. V., Kuzin, V. V., Fedorov, M. Y., Revyakina, N. A.
Zdroj: Inorganic Materials: Applied Research; Apr2024, Vol. 15 Issue 2, p420-425, 6p
Abstrakt: Abstract—Experiments were carried out on the production and testing of hard alloys from VK10KhOM and VRK15 powders coated with multigraphene obtained by the electrochemical method. Samples with multigraphene were sintered under standard conditions for the VK10KhOM and VRK15 grades. The amount of multigraphene additive was 0.1 wt % for the VK10KHOM alloy and 0.1 and 0.5 wt % for the VRK15 alloy. Friction tests on VK10KhOM samples showed that the width of wear areas of samples with multigraphene is 8% smaller than the original ones. At 0.1 wt % of multigraphene, the density of samples of the VK10KhOM grade is 14.5 g/cm3 and VRK15 is 14.0 g/cm3, and the porosity is 0.02 and 2%, respectively. Comparative tests were carried out on cutting VT-3 titanium. As a result of cutting, it was found that the coating of powders with multigraphene increases the durability of carbide inserts of both grades. It was shown that, for VRK15, the plate life increased by 4 times, but for the VK10KhOM grade, it was not possible to determine the failure time of the plate. The increase in wear resistance is presumably caused by a decrease in the coefficient of friction due to multigraphene, which, when dissolved in the hard alloy, is released in the form of graphite. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index