1 Department of Mechanical Engineering, National Institute of Technology Srinagar 190006, India
2 Department of Physics, National Institute of Technology Srinagar 190006, India
Adv. Mater. Lett., 2017, 8 (9), pp 932-938
DOI: 10.5185/amlett.2017.6959
Publication Date (Web): Jun 04, 2017
Copyright © IAAM-VBRI Press
E-mail: najar.kaleem@gmail.com, shah@nitsri.net
In the present work, smooth boron-doped (BD) and undoped multilayered diamond coating systems (MDCS) with top layer nanocrystallinity were deposited on chemically etched cemented tungsten carbide (WC-6%Co) substrates, using hot filament chemical vapour deposition (HFCVD) technique. Both coatings were accomplished by combining the alternate thin films of microcrystalline diamond (MCD) and nanocrystalline diamond (NCD) with a transition layer (TL) of ~1μm thick, using predetermined process parameters during the deposition process. The effects of boron doping on the residual stresses (σ), hardness (H) and coefficient of friction (COF) of MDCS were analyzed using Raman spectroscopy, Berkovich Nanoindenter and Micro-tribometer, respectively. The comparison has been documented between BD-MDCS with undoped one, under same input operating conditions and within same atmospheric conditions. The frictional characteristics were studied under the application of increasing normal load when sliding against smooth alumina (Al2O3) ceramic counter ball for the total duration of 20 min, within dry sliding conditions. The average values of COF of undoped-MDCS and BD-MDCS decrease from ~0.30 – 0.27 and ~0.28 – 0.25, respectively under the application of 1 – 10 N loads. Also, the average values of indentation depths for undoped-MDCS and BD-MDCS were ~65 nm and ~70 nm, with average hardness values in the range of ~65 – 80 GPa and ~55 – 75 GPa, respectively. Therefore, depositing smooth, adhesive and thick BD-multilayered diamond coatings on cemented tungsten carbide components would certainly enable its many useful future applications in mechanical industry.
Multilayered CVD-diamond coatings, boron doping, nanoindentation, coefficient of friction, tribo-layer
Celebrating 10th Years of Diamond Open Access Publishing in Advanced Materials
Cerebral Oxygenation Studies Through Near Infrared Spectroscopy: A Review
Analysis of Fine Sulfoaluminate Cement by Strength and Thermogravimetric Analysis
Characterization of the Interfacial Surface Energy for Composite Electrical Conduction Measurements using Two Full Range Percolation Threshold Models
Quantitative Detect of Fatigue of Membrane of Erythrocyte in Uniform Shear Field
Ecofriendly-developed Polyacrylic Acid-coated Magnetic Nanoparticles as Catalysts in Photo-fenton Processes
Evaluation of Drug Interactions with Medications Prescribed to Ambulatory Patients with Metabolic Syndrome in Urban Area
Fiber-reinforced Cementitious Composite: Sensitivity Analysis and Parameter Identification
Evaluation of Drug Utilization Patterns Based on World Health Organization Drug use Indicators at Outpatients Clinics
Are Quantitatively Micro-machined Scaffolds Effective for Cell Technology?
Synthesis and Characterization of Gold Nanoparticles from Lobelia Nicotianifolia Leaf Extract and its Biological Activities
Advanced Oxidations of Tartrazine Azo-dye
Antifungal Activity of Salvia jordanii Against the Oral Thrush Caused by the Cosmopolitan Yeast Candida albicans among Elderly Diabetic Type 2 patients
Advanced Materials Congress Celebrating 10th Years of Establishment
Secure Management of Networked Batteries for Building Integrated Photovoltaics (BIPV) Systems
The Cause of 100-year Low Carbonated Concrete of the Bridge
Organic Montmorillonite Intercalated Nano-composites Prevent Post-Surgical Associated Infections
Morphology/tensile Performance Relationship for LLDPE/PP Double Gated Injected Blends
Preparation and Characterization of Nickel Ferrite Nanoparticles via Sol-gel Method
Nitrogen-doped Diamond Nanowire Gas Sensor for the Detection of Methane
Manufacture of Functional Open-cell Al Foams with Recycled Al Scraps using NaCl Ball Space Holder
Vilsmeier-Haack Transformations under Non Classical Conditions
New Application of Highly Vesicular Basalt from Jabel Isbil Volcano (Dhamar-Rada'a Volcanic Field), Yemen
An Assessment of Tribological Characteristics under different Operating Condition
Functional Bi Coatings as A Perspective Material for Radiation Shields Production against Electron Radiation
Effects of Silica Modified NiFe2O4 on the Dielectric and Electrical Properties of NiFe2O4 filled Poly (methyl methacrylate) Composites
_1572929082.jpg)
Copyright ©2010-2020 VBRI Press
Full Article