Abstract Complex dielectric ( ε * = ε′ − jε″ )/electric modulus M M′ + jM ″), loss tangent (tan δ ), and ac conductivity σ ) properties of Au/(S-DLC)/p-Si structures were investigated by utilizing admittance/impedance measurements between 80 440 K at 0.1 0.5 MHz. Sulfur-doped diamond-like carbon (S:DLC) was used an interlayer Au/p-Si interface electrodeposition method. The capacitance/conductance (C/G) or ' ~ C) ″ G) values found to be highly dependent on both frequency temperature. increase...

Abstract In present study, the Inconel 625 alloy was coated using TIG welding method, and coating subjected to sandblasting artificial aging. The samples were examined by wear corrosion tests evaluate their performance in marine applications. study characterized different sample groups for purposes of steel samples, surfaces deformation, applying aging processes, observing combined effects deformation. Wet-sliding conducted 3.5 wt.% NaCl solution. presence compressive stresses resulting from...

Purpose It is important to know the friction coefficient and wear loss for determination of tribological conditions at journal bearings. Tribological events that influence its variations affect experimental results. The purpose this paper determine CuSn10 alloy radial bearings by a new approach. In experiments, effects have been examined dry lubricated different loads velocities. Design/methodology/approach study, losses bearing determined approach with test rig artificial neural networks...

Cold metal transfer (CMT) welding provides many advantages for of dissimilar materials and thin sheets with its superior heat input control mechanism. In this study, AA6061 AA7075 aluminum alloys were joined CMT welding. The effect parameters on hardness, tensile strength, corrosion rate was investigated. Tafel extrapolation method carried out to determine the rates base metals AA6061–AA7075 joints. Increasing found be detrimental both mechanical properties resistance. outcomes showed that...

This study was aimed to investigate the welding parameters on mechanical behavior of 2 mm thick AA1050 sheet materials joined by cold metal transfer (CMT) method. Macro structural examination showed that decreasing heat input decreased pore size in weld metal. Tensile test applied and failure occurred affected zone aluminum Maximum tensile strength found sample with minimum input. Heat observed explicitly produced maximum Decreasing joint gap bending positively. Bending superior bonding line length.

Abstract In this study, the effect of aging heat treatment on hardness AA 2024 and 6063 aluminum alloys was investigated by experimental an Artificial Neural Network (ANN). were solution treated at two different temperatures 490° C 520° C. Then both samples cooled to room temperature. After process, aged three (140° C, 180° 220° C) for ten periods time (2, 4, 6, 8, 10, 12, 14, 16, 18, 20 h.). The results trained in ANNs program, compared with values. It is observed that coincided results.

Abstract Lightweight magnesium (Mg) alloys are employed in a wide range of applications due to their high specific strengths. Nevertheless, some require improvement the wear resistance Mg alloys. The purpose this study was investigate effect initial surface conditions, cold spray temperature, and coating material on sprayed coatings WE43 substrate. Blasted sandpapered surfaces were coated with commercial powders K-32 (Ni Al 2 O 3 ) K-714 (Zn, Ni, ). materials blasted at 500 °C 600 °C....

Aluminum metal matrix composites were used in various fields such as aircraft, underwater, automobile, aerospace. Several fabrication techniques for the production of these composites. Among methods, powder metallurgy route provides dimensional accuracy and high rates. In this paper, that include 7075 aluminum alloy chips Al2O3 particles produced by using a hot pressing. The effect reinforcement amount T6 heat treatment on mechanical wear properties investigated. added weight 5, 10 15 %...

In this study, microstructure and mechanical properties of nickel matrix B4C reinforced functionally graded composites produced by powder metallurgy method were investigated. Samples with Ni+5% B4C, Ni +10% Ni+ 15% 20% compositions sintered at 900 1050?C for 60 minutes. Microhardness wear tests along optical microscopy, scanning electron microscopy energy-dispersive X-ray spectroscopy (SEM-EDX) diffraction (XRD) analyses carried out to determine the properties, phase composition samples. The...

Abstract For this study 5083 Aluminium alloy plates, as used in automobiles and watercraft, were experimentally MIG welded. The plates joined with different wires at various currents. effects of welding parameters on the mechanical corrosion properties investigated. behaviour welded base material was also chemical composition filler examined by metallographic inspection tensile testing. By EDS XRD analyses specimens it turned out that structures weld metal (Cu 3 Si) affect its properties....

Mg alaşımları otomotiv, uçak, uzay ve haberleşme sektörlerinde düşük özgül ağırlıkları yüksek mukavemetli olması nedenleriyle tercih edilmektedir. WE serisi, Mg, Y, Nd, nadir toprak elementlerini içeren serisidir. Bu alaşım serisi için sürünme dayanımı iyi olsa da aşınma gelişmeye açıktır. çalışmada amaç, nedeni ile kullanım potansiyeli olan WE43 alaşımlarının dayanımını arttırabilecek kaplamaların, endüstride de kolaylıkla uygulanabilecek bir yöntem kullanarak geliştirilmesidir. amaçla...

In conventional recycling method, metal chips are cast after pressing and melting in electric arc furnace. Material loss occurs during the from liquid due to several reasons. Direct method which produces aluminium powder using mechanical mill can be an alternative method. Thus material energy losses, labour cost will reduced by direct without melting. this study, particle morphology of recycled AA6013 alloy with cryogenic, disc ball type grinders is investigated. Mechanical milling resulted...