Adherent amorphous hydrogenated carbon films on metals deposited by plasma enhanced chemical vapor deposition

Capote, Gil; Bonetti, L.F.; Santos, L.V.; Trava-Airoldi, V.J.; Corat, Evaldo José

doi:10.1016/j.tsf.2007.08.007

Cited by 69 publications

(39 citation statements)

References 48 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The deposition rate of DLC films on glass substrates was approximately 5 nm/min (almost a third part of DLC deposition rate on metallic surfaces (BONETTI et al, 2006;CAPOTE et al, 2008)). This behavior was expected since metals are generally very good electrical conductors, better than glass.…”

Section: Resultsmentioning

confidence: 99%

“…In order to enhance the DLC film adhesion to the substrates (BONETTI et al, 2006;CAPOTE et al, 2008), a thin amorphous silicon interlayer was deposited using silane as the precursor gas (1 sccm gas flow at 11.3 Pa and a discharge voltage of -700 V). The silicon interlayer thickness was varied according to the deposition time.…”

Section: Methodsmentioning

confidence: 99%

“…Damasceno and Camargo Jr. (2008) produced DLC-Si films as a protective coating for polycarbonate substrates with high adherence. Other authors have been studied the use of a silicon interlayer in order to improve DLC adhesion on metallic substrates (BONETTI et al, 2006;CAPOTE et al, 2008). In this paper, it was investigated the influence of silicon interlayer on DLC films deposited on glass substrates.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Influence of the Silicon Interlayer on Diamond-Like Carbon Films Deposited on Glass Substrates

et al. 2012

View full text Add to dashboard Cite

Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Influence of the Silicon Interlayer on Diamond-Like Carbon Films Deposited on Glass Substrates

et al. 2012

View full text Add to dashboard Cite

“…La relación de I D /I G fue de 0,8. Teniendo en cuenta este valor y la posición de la banda G podría indicarse que el porcentaje de uniones sp 3 C-C alcanzó aproximadamente el 10% según el modelo de tres etapas propuesto por Ferrari et al [15]. A partir de la pendiente de la línea de ajuste a la base del espectro original, se pudo determinar que el porcentaje de hidrógeno es del 12 ± 2 % aproximadamente [16].…”

Section: Caracterización Del Recubrimiento Y De La Capa Ntiruradaunclassified

Protección de acero para instrumentos quirúrgicos con recubrimientos duros en base carbono tipo DLC

et al. 2018

View full text Add to dashboard Cite

RESUMENLos aceros inoxidables martensíticos como el AISI 420 tienen múltiples aplicaciones, entre ellas instrumentos quirúrgicos, donde se requiere buena resistencia al desgaste y a la corrosión. Los tratamientos de modificación superficial, como la nitruración iónica, permiten mejorar las propiedades mecánicas de estos aceros pero afectan su resistencia a la corrosión. Por esta razón, un tratamiento posterior de deposición de recubrimiento tipo DLC ("Diamond Like Carbon", carbono símil diamante) puede ser conveniente. En este trabajo se estudió el comportamiento al desgaste y a la corrosión de muestras dúplex (nitruradas y recubiertas por PACVD) y se compararon con muestras nitruradas, sólo recubiertas, nitruradas y sólo templadas y revenidas. Se analizaron los recubrimientos con espectroscopia Raman y EDS. Se realizaron ensayos de desgaste tipo "pin on disk" y se evaluó la adhesión mediante ensayos de Scratch Test e indentación Rockwell C. Se midió nanodureza con indentador Berkovich. Se llevaron a cabo los ensayos propuestos para instrumentos quirúrgi-cos en la Norma F 1089-02 (prueba de agua hirviendo y de hisopado con sulfato de cobre) y ensayos de niebla salina.Estos recubrimientos tienen una relación I D /I G de 0,8 y bajo contenido de hidrógeno aproximadamente del 20 %. El espesor de los recubrimientos fue de 2 µm y la dureza alcanzó 24 GPa. La capa nitrurada tuvo un espesor de 10 µm. Las muestras dúplex y recubierta presentaron bajo coeficiente de fricción y el volumen desgastado fue indetectable. Además, tuvieron buen comportamiento a la corrosión en el ensayo de niebla salina y en los ensayos propuestos en la Norma ASTM F 1089-02. No obstante, la muestra sólo nitrurada presentó una región corroída en el ensayo de sulfato de cobre y en el de agua hirviendo. La muestra dúplex presentó mejor adhesión que la muestra sólo recubierta en los ensayos de Scratch Test y de indentación Rockwell C. Palabrasclave: DLC coatings, AISI 420, desgaste, corrosión, instrumentos quirúrgicos ABSTRACT Martensitic stainless steels can be used in different applications such as surgical instruments where a good wear and corrosion resistance are required. Surface modification treatments such as nitriding improve the mechanical properties of these steels, however; they affect the corrosion resistance. For this reason, the DLC (Diamond Like Carbon) coatings deposition can be convenient.The wear and corrosion behaviour was studied in duplex samples (nitrided and PACVD coated) and they were compared with nitrided and only coated samples and with those without treatment, only heat treated (quench and tempering). The coatings were analyzed by Raman spectroscopy and EDS. Pin on disk tests were performed and the adhesion was evaluated using Scratch Test and Rockwell C Indentation. The nanohardness was measured with a Berkovich indenter. The corrosion tests for surgical instruments (according to the Standard ASTM F 1089 -02) and Spray Salt Fog tests were carried out.In the DLC coatings, the I D /I G ratio was 0.8 and the hydrogen conten...

show abstract

“…The DLC films with 20% hydrogen concentration were deposited by using pulsed-DC discharge under controlled conditions on 316L stainless steel substrates using carbonitride diffusion process as interlayer 19,25,26 . The 316L stainless steel surface was modified by single diffusion process during one hour at 430 °C using a mixture of N 2 , H 2 e CH 4 gases.…”

Section: Dlc Coating Preparationmentioning

confidence: 99%

Enhanced DLC wear performance by the presence of lubricant additives

et al. 2011

View full text Add to dashboard Cite

Lubricant additives play significant role for reducing friction and wear of mechanical elements. The additives presented in 5W30 oil were developed for metal surfaces. However, they have been used in engine pieces covered with DLC coatings because they also offer the potential to reduce friction losses and wear in automotive applications. The friction and wear tests were carried out by using a UMT-CETR ball-on-disk tribometer in rotational mode under 5W30 synthetic oil at 100 °C. The X-ray photoelectron spectroscopy (XPS) showed the presence of Mo and S in the wear tracks. These elements are from decomposition of ZDDP and MoDTC additives producing MoS 2 in DLC surface, which offers enhanced durability by low wear rate.

show abstract

Adherent amorphous hydrogenated carbon films on metals deposited by plasma enhanced chemical vapor deposition

Cited by 69 publications

References 48 publications

Influence of the Silicon Interlayer on Diamond-Like Carbon Films Deposited on Glass Substrates

Influence of the Silicon Interlayer on Diamond-Like Carbon Films Deposited on Glass Substrates

Protección de acero para instrumentos quirúrgicos con recubrimientos duros en base carbono tipo DLC

Enhanced DLC wear performance by the presence of lubricant additives

Contact Info

Product

Resources

About