Figure 1
Structure of hBN66 Majety S, Cao XK, Dahal R, Pantha BN, Li J, Lin JY et al. Semiconducting hexagonal boron nitride for deep ultraviolet photonics. Quantum Sensing and Nanophotonic Devices IX; 2012 Jan 21-26; San Francisco, United States. Bellingham: SPIE Digital Library; 2012. p. 82682R..
Figure 2
(a) Al-C, (b) Al-B and (c) Al-N binary phase diagrams.
Figure 3
Schematic diagram showing the steps involved in the development of nanocomposites.
Figure 4
(a) XRD of NFG, GIC, thermally exfolaited graphite and GnP (b) (002) peak of of NFG, GIC, thermally exfolaited graphite and GnP.
Figure 5
SEM images of GnP.
Figure 6
(a-d) Bright field HRTEM images and (e) SAED pattern of GnP.
Figure 7
(a) Raman Spectroscopy and (b) FTIR of GnP.
Figure 8
(a) XPS of GnP (b) XPS C 1s spectra of GnP.
Figure 9
XRD of acid-functionalized MWCNT.
Figure 10
(a, b) SEM images (c, d) Bright field HRTEM images with d-spacing (e) SAED pattern of acid-functionalized MWCNT.
Figure 11
(a) Raman spectroscopy and (b) FTIR of acid-functionalized MWCNT.
Figure 12
(a) XPS analysis of acid-functionalized MWCNT (b) XPS C 1s spectra of MWCNT.
Figure 13
(a) XRD spectra and (b) (002) peak of pristine and 20 h milled hBN.
Figure 14
SEM images of (a-c) pristine hBN and (d-f) 20 h milled hBN with EDXS analysis.
Figure 15
(a-d) Bright field HRTEM images and (e) SAED pattern of pristine hBN (f-i) Bright filed HRTEM images and (j, k) SAED pattern of 20 h milled hBN.
Figure 16
(a) Raman spectroscopy and (b) FTIR plot of hBN.
Figure 17
XPS analysis of 20 h milled hBN.
Figure 18
BET analysis of (a, b) as-received hBN (c, d) 20 h milled hBN.
Figure 19
(a, b) SEM images (c) combined elemental map and elemental map of (d) N (e) B (f) C and (g) O in CNT0.3 GnP0.3hBN0.4 powder mixture.
Figure 20
(a-d) HRTEM images and (e) SAED pattern of CNT0.3GnP0.3hBN0.4 and (f-i) HRTEM images and (j) SAED pattern of CNT0.3GnP0.3hBN4.4 powder mixtures.
Figure 21
DSC and TGA of (a) CNT0.3 GnP0.3hBN0.4 (b) CNT0.3 GnP0.3hBN4.4 powder mixture.
Figure 22
(a-c) SEM images (d) combined elemental map and elemental maps of (e) O, (f) B and (g) N in Al-1 wt.% CNT0.3 GnP0.3hBN0.4 powder mixture.
Figure 23
(a-c) HRTEM images (d) SAED pattern of Al-1 wt.% CNT0.3GnP0.3hBN0.4 powder mixture.
Figure 24
BET analysis of (a) Al-1 wt.% CNT0.3GnP0.3hBN0.4 and (b) Al-5 wt.% CNT0.3GnP0.3hBN4.4 powder mixture.
Figure 25
XRD of as-revived pure Al powder.
Figure 26
SEM image of pure Al powder along with EDXS analysis.
Figure 27
XRD of (a) pure Al and (b) Al-1, 2, 3, and 5 wt.% CNT-GnP-hBN nanocomposites (c) Al(111) peak and (d) (002) peak of CNT-GnP-hBN in Al-CNT-GnP-hBN nanocomposites.
Figure 28
Optical micrographs of (a, b) sintered pure Al (c, d) Al-1 wt.% nanocomposite (e, f) Al-3 wt.% nanocomposite (g) Schematic diagram of Orowan strengthening mechanism.
Figure 29
(a) SEM images of sintered pure Al sample. SEM images with EDXS analysis of (b) Al-1 wt.% CNT0.3GnP0.3hBN0.4 (c) Al-3 wt.% CNT0.3GnP0.3hBN2.4 nanocomposite.
Figure 30
(a-e) HRTEM images (f) SAED pattern of Al-1 wt.% CNT0.3GnP0.3hBN0.4 nanocomposite.
Figure 31
(a) Variation of sintered density and relative density of Al-CNT-GnP-hBN nanocomposites (b) Variation of relative density of Al-CNT-GnP-hBN and Al-hBN nanocomposites.
Figure 32
Variation of hardness of the Al-based nanocomposites.
Figure 33
(a) Variation of wear depth of Al-1, 2, 3 wt.% hBN and Al-1, 2 and 3 wt.% CNT-GnP-hBN nanocomposites (b) Wear rate of Al-1, 2 and 3 wt.% CNT-GnP-hBN nanocomposites.
Figure 34
SEM images of the wear tracks of (a, f) pure Al (b, g) Al-3 wt.% hBN (c, h) Al-1 wt.% CNT-GnP-hBN (d, i) Al-2 wt.% CNT-GnP-hBN (e, j) Al-3 wt.% CNT-GnP-hBN nanocomposites.
Figure 35
(a) Dry sliding wear test (b) Abrasive wear mechanism.
Figure 36
(a) XRD Al-1 wt. % CNT0.3GnP0.3hBN0.4 and Al-3 wt. % CNT0.3GnP0.3hBN2.4 nanocomposites and SEM image of wear debris of (b) Al-1 wt. % CNT0.3GnP0.3hBN0.4 and (c) Al-3 wt. % CNT0.3GnP0.3hBN2.4 nanocomposites.
Figure 37
(a) SEM image and (b) Combined elemental map of wear debris of Al-3 wt. % CNT0.3GnP0.3hBN2.4 nanocomposite. Elemental map of (c) B (d) N (e) O and (f) C.
Figure 38
(a) σ-ε plots (b) σmax and εf of sintered pure Al, Al-CNT-GnP-hBN and Al-hBN nanocomposites.