In order to improve various properties of medical titanium alloys, Ti–3Zr–2Sn–3Mo–25Nb alloy specimens were subjected microarc oxidation (BMAO) in 0.1 mol/l sodium tetraborate electrolyte cover the substrate with a micro-nano double-graded structured coating. The effect time on microstructure, physical phase, hardness, corrosion resistance, and wettability film layer was investigated. results s...

High-entropy alloys receive more attention for high strength, good ductility as well wear resistance. In this work, CoCrFeNiMn high-entropy alloy (HEA) coatings were deposited on compacted graphite iron through plasma transfer arc at different currents. The microstructure and properties of the HEA investigated. are composed single phase with FCC structure. coating had highest microhardness 394 ...

aluminum alloys such as al 5083 have primary potential for lightweight structural application in automotive and aerospace industries. this paper addresses the mechanical and tribological properties and corrosion resistance of chromium nitride coatings deposited on al 5083 that can be used for development of applications of aluminum 5083 alloy. the crn coatings of 1 μm thickness were deposited b...

This paper presents a systematic numerical investigation of the transient transport phenomenon during the pileup of molten metal droplets on the substrate. The physical mechanisms of the pileup process, including the bulk liquid, capillarity effects at the liquid-solid interface, heat transfer, and solidification, are identified and quantified numerically. The droplet diameter is 100 μm, and th...

A novel cobalt-free Cu1.2Mn1.8O4 spinel coating is prepared and evaluated for the metal interconnect of solid oxide fuel cell. Mn-35Cu and Co-35Mn alloy coatings are deposited on 430 SS substrate and then in-situ oxidized in air at 750 ◦C for 100 h. XRD results confirm that Cu1.2Mn1.8O4 spinel with some Mn2O3 is formed, and the average thickness of the coating is 70–80 μm according to cross sec...

We report on a novel fabrication approach of metal nanowires with complex surface. Taking advantage of nodular growth triggered by the presence of surface defects created intentionally on the substrate as well as the high tilt angle between the magnetron source axis and the normal to the substrate, metal nanowires containing hillocks emerging out of the surface can be created. The approach is d...

The reaction of Mo(CO)6 with thin films of dehydroxylated alumina grown on a Mo(1 0 0) substrate above 500 K is studied in ultrahigh vacuum using temperature-programmed desorption and Auger and X-ray photoelectron spectroscopies. This results in the formation of a molybdenum carbide that incorporates a small amount of oxygen, where MoC is formed initially, becoming closer to Mo2C as the Mo(CO)6...

The technology of the TiB2/TiB cladding layer addresses issue insufficient wear resistance cup-shaped parts composed titanium alloy materials. In order to eliminate cracking problem laser TiB2/Ti-based alloy, 30%TiB2/Ti-based gradient coating was prepared on surface by in this study. results revealed that microstructure matrix and is metallurgically bonded. microstructures appear as rod-like co...

The formation of residual stresses due to thermo-mechanical effect and microstructural transformation in the Laser Cladding process predominantly affects final product integrity service life. A 3D finite element transient model has been developed predict thermal profile stress distribution for repair application Ti6Al4V alloy using a moving heat source. Then was applied deposition ceramic mater...

Nanocrystallized ceria-based coatings were prepared on TA6V titanium alloy by using a three-step procedure: substrate pretreatment, electrochemical impregnation and final heat treatment. UV–vis and Raman in situ spectroscopies performed at the substrate interface during the electrochemical impregnation, showed experimentally for the first time that the interfacial deposit is made up of cerium h...