نتایج جستجو برای: color metallography
تعداد نتایج: 121822 فیلتر نتایج به سال:
A study of the effect cold air plasma on cathode nickel grade N-1 has been carried out. The changes in microstructure, macro- and microstresses, as well static displacements atoms from equilibrium positions are investigated. By method aim metallography it was shown that microstructure does not change under exposure. X-ray structural studies have established level microstresses when exposed to p...
purpose: to evaluate color vision in patients with type ii diabetes mellitus without diabetic retinopathy and compare the results with those of age- and sex- matched normal individuals. methods: this descriptive, comparative study was conducted on 100 diabetic patients without any sign of retinopathy and 100 age- and sex-matched normal subjects. color vision was evaluated using ishihara and far...
6063 aluminum anodized extrusions may exhibit a common surface defect known as streaking, characterized by the formation of narrow bands with a surface gloss different from the surrounding material. The origin of this banding lies in the differential surface topography produced after etching during the anodizing stage, shown to be connected to certain microstructural characteristics. The presen...
Abstract The results of experiments on low-energy implantation AISI 321 stainless steel by nitrogen ions are presented. treatment was carried out a pulsed beam obtained using ballistic ion focusing system. surface modification occurs with the formation two-layer structure, which is typical for ion-plasma nitriding processes steels. thickness modified layer can reach 27 μm after 1 hour treatment...
By using the developed finite-element models, we perform numerical investigation of nonstationary temperature fields and kinetics microstructural phase transformations in base material WWER -1000 reactor vessel (15Kh2NMFА steel) under conditions submerged-arc cladding protective anticorrosion layers austenitic materials. We comparative analysis results simulation obtained by two methods predict...
هانــری لُـــهِ فور، جامعه شــناس معاصــر فرانســوی بــا مطــرح کــردن ایــده «حــق بــه شــهر<span style="font-family: BMitra-SC700; font-size: 12pt; color: #0...
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