The collision of two cylindrical hydrogen-free diamond-like carbon (DLC) asperities with approximately 60 % sp3 hybridization has been studied using classical molecular dynamics. The severity of the collision can be controlled by the impact parameter b that measures the width of the projected overlap of the two cylinders. For a cylinder radius of R = 23 nm, three collisions with b = 0.5 nm, b =...

The present study investigates the effects of machining parameters and tool coating during drilling a GLARE® hybrid aerospace material on cutting forces, hole quality generation harmful dust particles. tests were conducted using twist drills with diamond-like carbon (DLC), Cristall without coating. Obtained results indicate that feed, in contrast to spindle speed, has an important effect thrust...

This work details the triboelectric characteristics of diamond-like carbon (DLC) film where a proportioned sp3:sp2 bond ratio is engineered through patented pulsed DC magnetron sputtering process to achieve durable commercial energy harvesting material. A nanogenerator (TENG) fabricated by creating interface between DLC and PTFE. The presence synchronization σ – π bonds DLC-PFTE contact surface...

Friction occurring between the crank journal and main bearings accounts for a large share of mechanical losses automotive engines. The effects higher in-cylinder pressures narrower have raised specific load applied to bearings, making it essential secure sufficient seizure resistance as well. For purpose meeting both requirements, we endeavored reduce friction improve by applying diamond-like c...

Various PVD (physical vapor deposition) hard coatings including nitrides and metal-doped diamond-like carbons (Me-DLC) were applied in plastic injection and die-casting molds to improve wear resistance and reduce sticking. In this study, nitrides hcp-AlN (hexagonal close-packed AlN), Cr₂N, (CrAl)₂N) and Me-DLC (Si-DLC and Cr-DLC) coatings were prepared using a closed field unbalanced magnetron ...

Diamond-like carbon films, amorphous hydrogenated or non-hydrogenated forms of carbon, are metastable amorphous materials characterized by attractive mechanical, optical, electrical, chemical and tribological properties. The films can be prepared at low temperatures by different techniques using a large variety of precursors and can be modified by incorporation of different elements such as N, ...

The friction of diamond and diamond-like carbon (DLC) materials was evaluated in reciprocating sliding wear testing under controlled relative humidity. The testing conditions were a displacement stroke of 100 mm, an oscillatory frequency of 8Hz and a normal load of 2N. The coefficient of friction of diamond and hydrogen-free DLC (a-C) coatings against a corundum sphere in the steady regime decr...

Diamond-like carbon (DLC) films have been successfully deposited on Ti–50.8 at.% Ni alloys using plasma based ion implantation (PBII) technique. The influence of the pulsed negative bias voltage applied to the substrate from 12 eV to 40 eV on the surface characteristics and corrosion resistant property as well as hemocompatibility has been investigated. The results show that the RMS values firs...

Biocompatibility improvements for blood contacting materials are of increasing interest for implanted devices and interventional tools. The current study focuses on inorganic (titanium, titanium nitride, titanium oxide) as well as diamond-like carbon (DLC) coating materials on polymer surfaces (thermoplastic polyurethane), deposited by magnetron sputtering und pulsed laser deposition at room te...

This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting galley proof before it is published in its final citable form. Please note that during the production process errors may be discovered which coul...