Abstract
In order to improve such a widely used microtribological testing procedure as surface scratching by an AFM diamond tip, an experimental study has been carried out using single-crystalline silicon as the tested material. Wear of the AFM diamond tip under scratching was observed by a decrease in the scratch depth with increasing wear cycles and by the direct imaging of the diamond tip shape using a Si3N4 AFM tip. It was shown that the current widely used experimental method, which assumes the diamond tip to be non-wearable, introduces uncontrollable error into the obtained values for the tested material's wear rate. The harder the tested material, the larger may be the tip wear, and, therefore, the bigger may be its effect on the obtained wear rate values. The specific wear rates for the diamond tip and a silicon wafer were estimated to be 1.4 × 10-9 and 4.5 × 10-4 mm3/(N m), respectively.
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Khurshudov, A.G., Kato, K. & Koide, H. Nano-wear of the diamond AFM probing tip under scratching of silicon, studied by AFM. Tribol Lett 2, 345–354 (1996). https://doi.org/10.1007/BF00156907
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DOI: https://doi.org/10.1007/BF00156907