Bibliographic Details
| Title: |
The Wear Resistance of NiCrSiB-20%CaF 2 Sinters in the Temperature Range 23–600 °C. |
| Authors: |
Piasecki, Adam, Kotkowiak, Mateusz, Tisov, Oleksandr, Gapiński, Bartosz, Jakubowicz, Michał, Sobkowiak, Julia, Tuliński, Maciej, Legutko, Stanisław |
| Source: |
Materials (1996-1944); Apr2025, Vol. 18 Issue 7, p1405, 16p |
| Subject Terms: |
X-ray photoelectron spectroscopy, FRETTING corrosion, NICKEL alloys, SOLID lubricants, HIGH temperatures |
| Abstract: |
In this work, powder metallurgy was used in order to produce self-lubricating composite materials. The NiCrSiB alloy as a matrix of the sinters and 20 wt. % CaF2 as a solid lubricant were used. The sinters were subjected to wear tests using the pin-on-disc method at four different temperatures (room temperature (RT), 200, 400, and 600 °C). The coefficients of friction of the friction pairs were determined, and research on their wear mechanism was carried out. For this purpose, research techniques such as Light Microscopy (LM), Scanning Electron Microscopy (SEM), Energy Dispersive Spectroscopy (EDS), X-ray photoelectron spectroscopy (XPS), X-ray Diffraction (XRD), and profilometer were used. Based on the conducted tests, it was found that CaF2 was smeared on the surfaces of the samples and counter-specimens, particularly at elevated temperatures. Moreover, it was found that micro-cutting and micro-ploughing are the major wear of the friction pairs at room temperature, while with the increasing temperature, they were dominated by the reduction of such mechanisms, which is associated with the formation of a tribofilm composed of CaF2 and oxidation wear. [ABSTRACT FROM AUTHOR] |
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| Database: |
Complementary Index |
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