From two sets of very-long-baseline interferometry (VLBI) observations, one each at 5 GHz (1985.77) and at 2.3 and 8.4 GHz simultaneously (1988.83), of the quasar 1928+738 phase-referenced to the BL Lac object 2007+777, we infer a change in their relative position of 0.74±0.22 milliarcseconds (mas) along a position angle of –9◦±25◦, where the quoted standard errors account for errors in our mod...

This study investigated the effect of postweld heat treatment (PWHT) conditions on Type IV failure behavior 10% Cr martensitic steel welds using Haynes 282 filler. The welded joints were subjected to PWHT at temperatures 688, 738, and 788 °C for 4 8 h. Creep tests carried out 600 under a stress 200 MPa. as-welded joint without showed cracking due growth voids around Laves phase by localized cre...

conventional and nanostructured ysz coatings were deposited on the in-738 ni super alloy by the atmospheric plasma spray technique. the oxidation was measured at 1100°c in an atmospheric electrical furnace. according to the experimental results the nanostructured coatings showed a better oxidation resistance than the conventional ones. the improved oxidation resistance of the nanocoating could ...