As a prospective candidate material for surface coating and repair applications, nickel-based superalloy Inconel 718 (IN718) was deposited on American Iron and Steel Institute (AISI) 4140 alloy steel substrate by laser engineered net shaping (LENS) to investigate the compatibility between two dissimilar materials with a focus on interface bonding and fracture behavior of the hybrid specimens. T...

Eighty-nine clinical isolates of Staphylococcus aureus that were resistant to both ciprofloxacin (MIC, greater than or equal to 3.13 micrograms/ml) and methicillin (MIC, greater than or equal to 12.5 micrograms/ml) were divided into two groups with respect to their susceptibilities to AT-4140. Most isolates that were moderately resistant to ciprofloxacin (MICs, 3.13 to 12.5 micrograms/ml) or of...

This work aims to reveal the effects of 3D roughness parameters sandblasted surfaces on bond strength between thermal spray coatings and substrates. The investigation was carried out surface AISI 4140, which were pretreated with automatic-sandblasting system. topography analyzed by a optical profiler. WC-12Co measured using pull-off test method. Scanning electron microscope revealed that morpho...

Abstract The quality and surface integrity of machined parts is influenced by residual stresses in the subsurface resulting from cutting operations. These stress characteristics can not only affect functional properties such as fatigue life, but also process forces during machining. Especially for orthogonal an appropriate experimental analogy setup machining operations like milling, different ...

RESUMEN La vida en servicio de elementos máquinas utilizados la industria del gas y petróleo puede ser extendida con el uso recubrimientos que permiten mejorar las propiedades superficiales, como resistencia al desgaste a corrosión. Los DLC son conocidos por su bajo coeficiente fricción, alta e inercia química. Las películas tipo TiSiCN cerámicas duras, lo otorgan una buena abrasivo erosivo. En...