Non-ferrous metals 547 1713 The Effect of Non-Metallic Inclusions on the Corrosion Resistance of [Armco] Iron. 0.I.Gogilashvili and V . E . Vlasenko. Tr.Gruz.Politekh.Inst., 1976, (5), [76][77][78][79] 7614911. A determination was made of the effect of non-metallic inclusions on the corrosion resistance of Armco iron (EPP355) deoxidized by various M w S i alloys. The steady-state electrode potential i n 0.01N-NaCl can be correlated with the quantity of such inclusions and a reduction in their content leads to improved corrosion resistance.-A.D.M. 1714 Effect of Surface Treatment on Hydrogen Sorption and the Mechanical Properties of Steels. U. A . Arifov, T. D. Radzhabov, and V. S. Yakhshiev. Fiz.-Khim. Mekh. Mater., Sept. -Oct. 1977, 13, ( 5 ) , [85][86][87][88]. With the aim of reducing H sorption by metals and increasing their corrosion resistance, the surface of steel specimens was treated in an atmosphere of N by ionic bombardment, thus eliminating hydrogenation during nitriding. Treatment at 550 "C for 3 h gave a barrier layer with { 0 . 2 5 atom N/atom Fe. Resistance to H,S corrosion was also tested i n aluminized steel with a barrier layer of Fe-A1 150-250 pni thick. Both types of treatment greatly reduce the sorption of H by the metal from corrosive media; this should affect the rate of H embrittlement. The sorption of H at different temp. from H,Scontg. aq. media is not an exponential process, and a rise in temp. decelerates the process of H absorption. 9 ref.-L. D. H. Nichteisenmetalle/Non-ferrous metals 1715 Inhibition of carburisation by gold films. B. D. Whitley, P. C.Thornton, V. D. Scott. Gold Bulletin 11 (1978) 2,40-41. Gold coatings have previously been explored as diffusion barriers to protect chromium alloys against nitridation, and substrate metals against hydrogen embrittlement during electroplating. It has now been demonstrated that they are effective as barriers against carburisation of steel. Moreover, considerable insight into their mode of action has been obtained. -Pu.1716 Solder residues in copper tube system give rise to corrosion damage.Maschinenschaden 50 (1977) 6,233. A perforation in a water system with copper tubes started from the internal surface and resulted in leaks; the investigation showed that this corrosion was due to solder residues which bad remained in the tube and, because of the formation of an electrolytic couple had considerably reduced the wall thickness. -Pu. 1717 Anodic behaviour of aluminium in methanolic solutionf of sulfuric acid. M. Nicoia, M. Constantinescu, T. Badea. Rev. Chim. (Bukarest) 29 (1978) 2,156-158.Aluminium behaviour is investigated in methanol and sulphuric acid solution. In case of stationary potential aluminium is stable. As soon as the potential moves towards electro-positive values, metal corrosion pitting occurs. The corrosive effect grows with the higher contents of sulphuric acid in the electrolyte. Pu.
1718The catalyzed reaction of graphite with water vapor. D. W. McKee, D. Chatterji . Carbon 16 (1978) 1,53-57.The effects of Li, Na a...
