AFM Observation and Application of Diamond-Like Carbon Films

Chi, Ning; Qingrun, Hou; Gao, Jie

doi:10.1142/s0217984998000159

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2004

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“…1), the small islands of graphite-rich phase were observed. 18 The a-C coating deposited at higher bias voltage showed smoother surface because the incoming C atoms have higher energy. Therefore, the diffusion (which promotes the formation of graphite-rich phase) is hindered.…”

Section: Resultsmentioning

confidence: 96%

Development of Carbon-Based Coating of Extremely High Toughness With Good Hardness

Zhang

Bui

et al. 2004

Int. J. Nanosci.

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Metallic Al was doped into amorphous carbon (a-C) to form a matrix of a-C(Al) of very low residual stress and high toughness at the expense of some hardness. Nanocrystallites of TiC (nc-TiC) of a few nanometers in size were embedded in this matrix to bring back the hardness. The nanocomposite coating of nc-TiC/a-C(Al) was deposited via cosputtering of graphite, Ti, and Al targets. Although the nanocomposite coating exhibited a moderately high hardness (about 20 GPa), it possessed extremely high toughness (about 55% of plasticity during indentation deformation) and low residual stress (less than 0.4 GPa), smooth (Ra = 5.5 nm), and hydrophobic surface (contact angle with water reaches 100 • ).

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Section: Resultsmentioning

confidence: 96%