Oxidation behavior of diamond-like carbon films

Wang, Da-Yung; Chang, Chi-Lung; Ho, Wei-Yu

doi:10.1016/s0257-8972(99)00350-3

Cited by 72 publications

(39 citation statements)

References 18 publications

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“…However, the commercial use of standard state-of-the-art DLC coating is compromised due to its poor adhesion strength (typically 30 -40 N critical load) and low thermal stability up to ~350°C [4,5]. Most of the state-of-the-art technologies utilise…”

Section: Introductionmentioning

confidence: 99%

Tribological behaviour of Mo–W doped carbon-based coating at ambient condition

Mandal

Ehiasarian

Hovsepian

2015

Tribology International

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Section: Introductionmentioning

confidence: 99%

Tribological behaviour of Mo–W doped carbon-based coating at ambient condition

Mandal

Ehiasarian

Hovsepian

2015

Tribology International

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“…Another possible mechanism was the degradation of mechanical properties of DLC coating when exposed to high temperatures [9]. It was found that the micro hardness of DLC dropped as annealing temperature increased from room temperature to 300°C, owing to the graphitization and oxidation effects.…”

Section: O/c Ratio Depth Profilementioning

confidence: 99%

“…The soft layer could have been caused by the C-O bonds formed in DLC. As the temperature increased above 200°C, tribo-activation energy, sufficient for soft C-O bonds in solid phase, vapourized as CO or CO 2 [9,13]. The distinct wear difference between low and high DO above 200°C could be attributed to the large amount of soft oxide layer removed from the DLC film when sliding with the counterpart and vapourizing as gas species simultaneously.…”

Section: O/c Ratio Depth Profilementioning

confidence: 99%

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Depth Profile of Oxygen of Diamond-Like Carbon Sliding under Pressurized Hot Water

et al. 2017

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The wear mechanism of diamond-like carbon (DLC) in hot, pressurized water has been studied by the oxygen depth profile of DLC films pre and post a sliding test. The sliding test between DLC films coated on chromium molybdenum steel (JIS SCM420) pins and austenitic stainless steel (JIS SUS316) plates was conducted in a water environment by using high temperatures of 100, 200, 250 and 300°C and a high-pressured (10 MPa) autoclave friction tester. The dissolved oxygen concentration (DO) was 0.52 mg/L for oxygen-poor water and 40 mg/L for oxygen-rich water. The experimental results showed that the specific wear rate of DLC was strongly related to the water temperature and the DO concentration. The specific wear rate in both cases of oxygen-poor and oxygen-rich water showed a temperature dependency. When the temperature was below 200°C, the specific wear rate of DLC did not depend on the DO concentration. On the other hand, when the water temperature was more than 200°C, the specific wear rate drastically increased with the DO concentration. In order to prove the effect of oxidation on the wear rate of DLC, the depth profile of the oxygen concentration was compared to that of the carbon concentration on the inside and outside of the wear scar of DLC after sliding tests in hot, pressurized water. When the concentration of DO in the water was low at 0.52 mg/L, the O/C ratio was not affected by the water temperature. On the other hand, when the concentration of DO in water was high at 40 mg/L, the O/C ratio of the top surface increased from 0.05 to 0.18 with an increase in the water temperature on the inside of the wear scar of DLC, where the O/C ratio on the inside of the wear scar was higher than that on the outside of the scar. On the basis of the estimated rate of reaction between DLC and oxygen, determined from a linear relationship between ln (Oxidation wear volume) and the inverse temperature, it was concluded that the oxidation of DLC governed the wear of DLC in hot, pressurized water. Friction was found to enhance the oxidation wear of DLC from the estimated activation energy.

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“…[7][8][9] Other methods use the additive layer under the DLCH film, such as the interlayer structure (DLCH/Ti/substrate), multilayer structure (DLCH/TiCN/TiN/Ti/substrate) and special graded structure to improve the DLCH adhesion. 10) In addition, many studies have been reported about the property in DLCH over polymer structure. [11][12][13][14][15][16][17][18][19][20][21] Several test results show that DLCH/polymer can significantly reduce the oxygen gas penetration into polymeric film.…”

Section: Introductionmentioning

confidence: 99%

Spin-Coating Polyimide Film on Hydrogenated DLC Film Surface Prepared by Ion Beam Deposition Method

2006

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The present work describes the hybrid layers consisting of 1-mm-thick hydrogenated diamond-like carbon (DLCH) film deposited by ion beam deposition (IBD) method as the bottom layer and spin coating polyimide (PI) film at a thickness of 6 mm as the top layer. Optical microscopy shows that all DLCH film, PI film and PI/DLCH film have smooth surface and are free from cracks or wrinkles. Water contact angle measurement shows that the annealed DLCH film has the higher relative adhesive tension and adhesive work than that of PI film. Raman spectra show that the DLCH film can avoid severe graphitization & degradation at 300 C during annealing treatment, and FTIR spectra also exhibit that the PI film will reach 95% imidization during the curing step at 300 C. PI film can act on DLCH film as the stress buffer. This is demonstrate from warpage measurement showing that top PI film with tensile stress can partially reduce the compressive stress over bottom DLCH film with 6.7% warpage reduction. The electrical resistivity of PI/DLCH/Si is similar to that of PI/Si is resulted from the PI passivation effect.

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Oxidation behavior of diamond-like carbon films

Cited by 72 publications

References 18 publications

Tribological behaviour of Mo–W doped carbon-based coating at ambient condition

Tribological behaviour of Mo–W doped carbon-based coating at ambient condition

Depth Profile of Oxygen of Diamond-Like Carbon Sliding under Pressurized Hot Water

Spin-Coating Polyimide Film on Hydrogenated DLC Film Surface Prepared by Ion Beam Deposition Method

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