نتایج جستجو برای ' Stainless steel '

Investigation of the formation of sputtered Copper- Silver composite coatings on AISI 430 stainless steel In the present research, the duplex coating of silver-copper oxide was deposited on AISI 430 stainless steel substrate using sputtering method under argon atmosphere. X-ray diffractometry on the coated substrate revealed that duplex layer of Ag-CuxO was formed on the surface of steel. X-ray patterns determined that the deposited layer was not silver-copper layer due to remaining oxygen in s...

In this paper an innovated method is used for cooling Milling zone of Stainless Steel via Adaptive Neuro-Fuzzy Inference System (ANFIS) using non-touch laser thermometer for non-touch measuring of the temperature. This method is economically appropriate because of its optimization in using coolant. In comparison to the ways which were designed to optimize the ratio of coolant, this method is the best due to its intelligent, fast and trained system via ANFIS .In this method, not only the designin...

Fouling adhering experiments on AISI 304 stainless steel surfaces with different roughness had been performed in boiling supersaturated calcium bicarbonate solution. The effect of surface roughness on adhesion of fouling is limited, and the adhesion of fouling does not have a simple linear relationship with the surface roughness of samples. The surface with roughness in middle is more easily induced to form “transitional interface” which connects the fouling and matrix surface. It is...

Erosion-corrosion behavior of Sanicro28 stainless steel was investigated. Erosion-corrosion tests were performed using slurry impingement rig in a 3.5 wt.% NaCl solution containing 30 g/l of SiO2 erosive particles with the average size of 315 μm, at four different velocities of 4, 6, 7.5 and 9 m/s under impingement angles 40 and 90º. The pure erosion tests were also carried out in similar conditions by cathodic protection. The corrosion behavior of the samples in the stagnant condition w...

Nowadays, welding of dissimilar metals has become significant. In this process, a number of parameters including but not limited to type of electrode, amount of current, preheating temperature, and welding rate, that are essential to be taken into account. For welding of dissimilar metals, various methods are exploited including shielded metal arc welding (SMAW) and gas tungsten arc welding (GTAW). The stimulus for studying welding of 304L stainless steel to pure copper originates from difficult...

Human bone is a bioceramic composite that is mainly composed of calcium phosphate (69%), collagen (20%), and water (9%). Other organics, such as proteins, polysaccharides, and lipids, only account for a small percentage. The main ingredient in the organic part is collagen fibers, which make the bone flexible and elastic. For this reason, polylactic acid or polylactide (PLA) is biodegradable and bioactive thermoplastic aliphatic polyester that best resemble the features of organic component of bo...

 The Cu precipitation in a high Cu austenitic antibacterial stainless steel (3.8–5.0% Cu) was studied by using differential scanning calorimetry (DSC) analysis. The results indicated that DSC analysis could be used to detect the Cu precipitation in the experimental steel with different Cu additions. Two stages of precipitation were identified in the steel by DSC analysis, clustering of Cu-rich phases and dissolution/coarsening of the precipitates formed at the first stage. DSC analyse...

 Copper (Cu) precipitation behavior in a type 304 Cu-bearing austenitic antibacterial stainless steel was studied by analyses of variations in micro-hardness, electrical resistivity, electrochemical impedance and lattice constant of the steel, complemented with transmission electron microscopy (TEM) observation, showing more or less changes on these properties of the steel with different aging time. It was found that both micro-hardness and electrical resistivity measurements were relativel...

 The present work aims at studying structure–property correlations in a weld overlay clad high strength low alloy steel with austenitic stainless steel of American Institute for Steel and Iron (AISI) 347 grade. Optical microscopy studies revealed that the interface between the two steels was nearly flat. The base plate had ferrite plus bainite microstructure adjacent to the interface and tempered bainite/martensite structure away from the interface. Grain coarsening and decarburizatio...