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Diamond, maximum modulus

A Berkovich diamond tip with a total included angle of 142.3° and a radius of around 150 nm was used for the nanoindentation measurements [1-2]. Indentation load-displacement curves were obtained by applying loads ranging from 1 pN to 1 mN. The hardness and reduced elastic modulus of the tribofilms were determined with Oliver s method [35,36], where fused silica with a Young s modulus of 69.7 GPa was used as a standard sample for tip-shape calibration to determine the function of the contact area with respect to the contact depth in a range of 1.5-50 nm. Figure 9.5 shows indentation load-displacement curves obtained for the MoDTC/ZDDP and ZDDP tribofilms at a maximum load of 600 pN and in situ AFM images of the residual indent. A plastic pileup was clearly observed around the indent on both the MoDTC/ZDDP and ZDDP tribofilms. [Pg.195]

Fig. 6 (a) Storage modulus and (b) tan 5 vs. temperature for NR (open circle) and composites with 1 (filled triangle), 2.8 (filled diamond), 5.4 (filled circle) and 8.3 (open square) wt% MWCNT. Inset of Figure b shows the maximum of tan 5 with filler concentration exhibiting linearly decreasing order [99]... [Pg.27]


See other pages where Diamond, maximum modulus is mentioned: [Pg.108]    [Pg.430]    [Pg.120]    [Pg.151]    [Pg.219]    [Pg.595]    [Pg.591]    [Pg.120]    [Pg.133]    [Pg.158]    [Pg.106]    [Pg.2322]   
See also in sourсe #XX -- [ Pg.212 ]




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Modulus maximum

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