The present paper describes fuzzy logic simulation of an experimental study on the behavior of hot corrosion in molten salt (Na2SO4) of steel-T21 coated by simultaneous yttrium-doped aluminizing-siliconizingprocess . Diffusion coating was carried out at 1050C for 6 hr under Aratmosphere . The weight change measurements made on the coated steel during the cyclic tests are used to determine kinet...

The dynamics of hot electrons are central to understanding the properties of many electronic devices. But their ultra-short lifetime, typically 100 fs or less, and correspondingly short transport length-scale in the nanometre range constrain real-space investigations. Here we report variable temperature and voltage measurements of the nonlocal manipulation of adsorbed molecules on the Si(111)-7...

Competing mechanisms of electromigration and thermomigration in flip chip SnAgCu (SAC) solder joints was studied experimentally. A chain of solder joints were stressed at 2.0 × 10 Amps/cm, 2.4 × 10 Amps/cm, and 2.8 × 10 Amps/cm current density at room temperature. In the test vehicle, some solder joints were exposed to a combination of electromigration and thermomigration, while some others wer...

Life stages of Forcipomyia parasecuris sp. n. is described, illustrated and photomicrograph based on examination with scanning electron microscope and binocular microscope. The larvae were collected from rotting banana stump of a banana garden at lower Gangetic plain area in India. Absence of ocular sensillum and campaniform sensillum in ocular area of pupa, a synapomorphic character of this pr...

The aim of this study was to compare Fluorescent(auraminO rhodamine,AO)method ,Ziehl-Neelsen (ZN hot method)and kinyoun(cold method) staining techniques for the diagnosis of Mycobacterium tuberculosis. Materials And Methods: 186(on 3 consecutive days) sputum samples were collected from 62 suspected pulmonary tuberculosis patients, processed by petroffs method, and subjected to direct microscopy...

Cu/Ti3SiC2/C/BN/GNPs nanocomposites were prepared by vacuum hot-pressing (HP) sintering and hot isostatic pressing (HIP) sintering methods. Microstructures, mechanical and tribological properties of Cu/Ti3SiC2/C/BN/GNPs nanocomposites were investigated. Microstructures were examined by optical microscopy (OM), X-ray diffraction (XRD) and scanning electron microscope (SEM). Mechanical properties...

One of the most interesting questions in solid state theory is the structure of glass, which has eluded researchers since the early 1900's. Since then, two competing models, the random network theory and the crystallite theory, have both gathered experimental support. Here, we present a direct, atomic-level structural analysis during a crystal-to-glass transformation, including all intermediate...

A preferentially oriented mordenite membrane was successfully prepared on a seeded porous a-alumina support. Characterization results of XRD (X-ray diffractometer) and FE-SEM (field emission scanning electron microscope) revealed that evolutionary selection might predominantly contribute to the formation of the sharply oriented mordenite membrane. The necessary conditions under which evolutiona...

Investigations were conducted on hot corrosion of Nickel base, NIMONIC-90 at 675°C and 725°C. The tests were carried out on small test coupons coated with a chemical containing Sodium sulphate and Sodium Vanadate which is representative of the corrosive deposit that usually forms during service in the coal fired boiler and the likes operating in marine atmospheres. Corrosion rates were measured...