Wear-resistant coatings improve the machining capability of cutting tools and extend their useful life. However, when a tool needs to be reused, it is mandatory remove existing coating facilitate resharpening recoating. The technique uses electrochemical stripping, which hazardous environment. environmentally friendly pulsed laser stripping causes melting mixing materials, makes difficult separ...

Background: This research article considers optimization of the four process parameters based on corrosion and wear of electroless Ni-P-Cu coatings. The major characteristics indexes for performance selected to evaluate the processes are corrosion potential (Ecorr), corrosion current density (Icorr) and wear. Among the corresponding four process parameters the first three are coating parameters...

The object of research is the control process formation a spraying air flow and transfer particles liquid metal from electrodes during arc spraying. One problem areas oxidation sprayed by oxygen their transportation to surface. This leads sufficiently large amount oxides chemical elements, which significantly deteriorate adhesion strength burn out alloying elements that are necessary obtain wea...

Coated tool inserts can be considered as the backbone of machining processes due to their wear and heat resistance. However, defects of coating can degrade the integrity of these inserts and the number of these defects should be minimized or eliminated if possible. Recently, the advancement of coating processes and analytical tools open a new era for optimizing the coating tools. First, an over...

The use of Fe-Al intermetallic compound coatings has been investigated in order to improve the tribological behaviour of carbon tool steel. The coatings were formed by a pack cementation process and subsequently diffusion annealing at 900˚C in an argon controlled atmosphere. The optimum diffusion time was selected on the basis of optimum thickness and tribological behaviour.&#10The microstructu...

Ti-6Al-4V alloy with TiO2 coating is the most commonly selected material to construct an aortic heart valve. Wear resistance is the main mechanical property to be evaluated for this purpose. In this paper, the wear resistance of TiO2 thin films obtained by anodic oxidation of Ti-6Al-4V is evaluated. Anodic oxidation was performed at 20 V to 70 V with a H2SO4 1 M electrolyte. The samples were th...

In this study, new multicomponent Fe54M5Cr15Mo6Si2B4P10C4 (M = Fe, Co, and Ni, denoted as Fe59, Fe54Co5, Fe54Ni5, respectively) bulk metallic glasses (BMGs) with excellent corrosion wear resistances were synthesized using the J-quenching technique fluxing treatment. The Fe-based BMGs possessed a large glass-forming ability, maximum diameters of Fe54Ni5 glassy alloy rods reached 5.5, 4.5, 4.0 mm...

The manufacture of medical and aerospace components made of titanium alloys and other difficult-to-cut materials requires the parallel development of high performance cutting tools coated with materials capable of enhanced tribological and resistance properties. In this matter, a thin nanocomposite film made out of AlCrN (aluminum-chromium-nitride) was studied in this research, showing experime...

In severe conditions, braking may cause the temperature on the disc-pad interface to rise up to 800 °C 1 . At such a temperature, the properties of organic compounds are disrupted, coefficient of friction (CoF) decreases, and the rate of wear increases exponentially. This phenomenon is called “fade” 2 . Ideal brake pads, without causing any fades, are expected to function in uniform and stable ...