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. 2016 Aug 5;6:31309. doi: 10.1038/srep31309

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Copyright © 2016, The Author(s)

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A typical curve of friction force vs applied load/scratch distance (a), Comparisons of critical load/friction coefficient of Si-HA coating at different H₂SiO₃ contents (b) and Failure morphologies of Si-HA coatings on C/C (c).