A comprehensive survey of the soil corroded samples is made.which have been bu-ried in a site located at the place on the south bank of Yangzi River near the underconstructing Three Gorges Dam for 33 years.The sample were made of 4 kinds of materials,incl

During the study of oxidation and reduction of ultrafine copper particles by using high resolution electron microscopy,it has been observed that ultrafine copper particles interacted with the residual gases in the EM chamber.Some amorphous-like layers for

Linear regression method has been used to determine Kelvin potential and overcome the error around the point where the amplitude of AC signal was zero.A Kelvin probe experimental device can be used to measure the electrode potential of metals under thin e

The electrochemical methods and AES techniques were used to study the growth and nature of anodic film on TAl in neutral aqueous solutions.Results are as follows:1.The thickness of the anodic film on TAl increases linearly with anodic potentials,appoximat

The effects of alloying elements Nb,Mo,V and Si on hot corrosion resistance of Ti3Al in the presence of molten(0.9Na,0.1K)2SO.salts film at 900-950℃ in air were conducted.It is shown that the Ti3Al-based alloys all suffer from hot corrosion,and the corros

Relation between dissolution rate at crack tip and crack growth rate for commer cial iron in 3.5% Nacl solution has been studied by using straining electode technique.The experimental results shoued that the crack growth rate caused by corrosive factor is

Austenitic 304SS is susceptive to SCC in acidic chloride solutions at ambient tem-perature.A layer of adsorptive product rich in Cr was formed on the metal surface in the solutions,which plays a certain protective role for the base metal. The nucleation o

The experiments of hydrogen permeation and numerical calculation have been made to study the influence of plastic deformation on the diffusion and enrichment of hydrogen in 4340 steel.The relationship between the hydrogen concentration in 4340 steel and t

One type of aluminium alloy sacrificial anode with high efficiency of 95.6% and po-tential of 1.09V(SCE)in seawater has been developed by alloying aluminium with zinc,magne-sium,indium, gallium and calcium.The results of electron microprobe and X-ray anal

This paper presents a review of stress corrosion cracking(SCC)of austenitic stain-less steels in polythionic acid solution.The influences of several factors,such as environment,car-bon content in the steel,heat treatment and stress are described.The mecha

An extensive study has been made of the oxidation of the α-Fe nano-particles nm)prepared by CW CO2 Laser-induced pyrolysis of Fe(CO),.It has been indicated that the surface oxide formed on the α-Fe nano-particles at room temperature in air is Fe3O4.The α

Corrosion regularity and corrosion resistances of low-alloy steels in different test sites are studied with simulated long-size samples, and corrosion regularity are discussed based on corrosion results of three kinds of low-alloy steels exposed in 4 test

Application of data communication from Apple Ⅱ e to IBM PC is discribed, data of Solartron DMS 1096 and EG&G PARC 322 can be transmitted into IBM PC. It is proposed that these data may easily be used to carry on EIS fitting or low polarization curve fitti

The changes within occluded cell for 45CrNiMoV high strength steel in NaCl solu-tion were studied with a simulated occluded cell.As anodic currents passed the cell a series of changes took place,the most important changes were pH fall and Cl-migration. It

Corrosion behavior of carbon steel buried in soils after 20 years was studied by means of SEM,EDAX and metallographic techniques.The observations revealed that the inclu-sions in steel,welded joints and heat-treated region of the steel tube specimens resu