NDLI: Friction and Wear Behaviors of Carbon Nanotube Reinforced Silica and Alumina Matrix Composites Fabricated by Catalyst Sol-Gel and CVD Process

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Friction and Wear Behaviors of Carbon Nanotube Reinforced Silica and Alumina Matrix Composites Fabricated by Catalyst Sol-Gel and CVD Process

Content Provider	Semantic Scholar
Author	Lee, Kunik Yeh, Yu-Ting Cheng, H. Z. Lin, Hsun-Yu
Copyright Year	2018
Abstract	Fe(NO3)3/TEOS (tetraethoxysilane, Si(OC2H5)4)) and Fe(NO3)3/boehmite catalyst sol-gels combined with different chemical vapor deposition (CVD) growing/calcining processes were individually adopted to fabricate different carbon nanotube (CNT) composite powders and make different CNT/silica and CNT/alumina composites. Experimental results indicate that the Fe(NO3)3/TEOS and Fe(NO3)3/boehmite catalyst sol-gels with different CVD growing/calcining processes generate different products. Among those different products, CNTs could improve the tribological performance, stabilize the friction coef cient and reduce weight losses of specimens. Furthermore, ceramic products such as cristobalite, α-Al2O3 transformed from the Fe(NO3)3/TEOS and Fe(NO3)3/boehmite catalyst sol-gels at higher calcining temperatures could increase hardness and friction coef cient of specimens, however, they also result in more uctuant friction coef cient curves and higher weight losses. The nal products from different catalyst sol-gels via the two-step growing/calcining process could provide better mechanical and tribological properties of the specimens. The weight losses of CNT contained specimens with stable phase (α-Al2O3 or cristobalite) from different catalyst sol-gels via the two-step growing/calcining process are 1/4 to 1/2 of CNT free specimens and CNT contained specimens with metastable phase (γ-Al2O3 and amorphous SiO2) via the one-step growing/calcining process, respectively. [doi:10.2320/matertrans.M2017266]
Starting Page	280
Ending Page	289
Page Count	10
File Format	PDF HTM / HTML
DOI	10.2320/matertrans.m2017266
Alternate Webpage(s)	https://www.jim.or.jp/journal/e/pdf3/59/02/280.pdf
Alternate Webpage(s)	https://doi.org/10.2320/matertrans.m2017266
Volume Number	59
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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