In this work, the thermal stability and the oxidation and tribological behavior of nanoporous a-BC:H films are studied and compared with those in conventional diamond-like carbon (DLC) films. a-BC:H films were deposited by pulsed plasma chemical vapor deposition using B(CH3)3 gas as the boron source. A DLC interlayer was used to prevent the a-BC:H film delamination produced by oxidation. Therma...

Frictional behavior of nano-undulated diamond-like carbon (DLC) films deposited by plasma assisted chemical vapor deposition (PACVD) process was investigated. In order to prepare the nano-undulated DLC film, a Si wafer with nano-sized Ni dots was prepared by rapid thermal annealing of Ni thin films. Since the structure of DLC film deposited by PACVD was independent of the substrate materials an...

PS400 is a multi-component alloy developed by NASA and intended for high temperature bearing applications. This study reports on four mating surfaces, namely bulk 4130 steel, diamond-like carbon (DLC), polycrystalline diamond, molybdenum boride cobalt chrome coatings sliding against coating, the best performing tribopair at 25 500 °C was identified. The range speeds simulate extreme conditions ...

Abstract Diamond-like carbon (DLC) films are deposited on rubber surfaces to protect the components, and surface pretreatment of substrates prior film deposition can improve adhesion between DLC rubber. Thus, principal purpose this work concentrates determining effects argon (Ar), oxygen (O 2 ), nitrogen (N hydrogen (H ) plasma pretreatments friction performance (DLC/rubber). The results indica...

Diamond-like carbon (DLC) films had been formed as a surface treatment for intracorporal device decreasing the coefficient of friction. DLC film showed significant stability without being damaged during acid immersion and high-pressure steam sterilization. However, bacteria that adhere to medical devices lead induction infectious diseases associated with therapeutic actions. Therefore, maintena...

Nanoimprint lithography NIL has proven to be an exceptional lithographic technique for achieving arbitrary, nanoscale features, over large areas without the use of costly step-and-repeat UV lithography tools. One requirement for NIL is to eliminate adhesion of the imprinted polymer to the imprinter upon withdrawal of the imprinter. Previous work on thick 100 nm diamondlike carbon DLC layers ind...

Ion energy distributions (IEDs) have been determined at the radio frequency (rf)-biased electrode in an inductively coupled acetylene–argon plasma for various substrate bias voltages and frequencies under conditions suitable for diamond-like carbon (DLC) and polymer-like film deposition. These are compared with those obtained at a capacitively coupled plasma grounded wall. In the former, for pr...

Diamond and diamondlike carbon (DLC) films exhibit a wide range of sometimes contradictory tribological behavior. Experimentally, isolating the influences of factors such as film structure, testing conditions, and environmental effects has proven difficult. In this work, molecular dynamics simulations were used to examine the effects of film structure, passivation, adhesion, tribochemistry, and...

Abstract The article presents the results of metal-physical and tribological studies carbon thin films - diamond-like coatings (DLC), obtained by vacuum ion-plasma technology. most interesting are gradient distribution ratio electronic configurations sp3/sp2 over depth coating, XPS method. structure such a as it approaches substrate, transforms from DLC to amorphous graphite (GLC). This feature...