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. 2016 Jul 21;6:29992. doi: 10.1038/srep29992

Figure 1. CoF of Nitinol 60 alloy against steel lubricated by castor oil at different speeds.

Figure 1

(a) Stribeck curve usual shape and Stribeck curve with s-shape in the present work. (b) Evolution of CoF with Nitinol 60 alloy against sliding time. The steady state CoF at the load of 30 N and 3 mm/s shows vanishing of friction after 1000 seconds.