摘要:

AbstractThe types of anode and cathode reactions commonly found in corrosion by aqueous media are described, and the combination of these reactions in corroding and in passivated systems is discussed.The principal ways in which corrosion rates are increased or decreased are classified and discussed, as follows: anodic attack and cathodic protection; anodic passivation or protection and cathodic activation; anodic inhibition and stimulation; cathodic inhibition and stimulation; resistance inhibition.The importance of the use of electrochemical and other theoretical principles in thepracticeof corrosion and protection is emphasised.

ISSN:0021-8871    

DOI:10.1002/jctb.5010110401

出版商:John Wiley&Sons, Ltd    

年代:1961

数据来源: WILEY

摘要:

AbstractOils derived by the distillation of primary and refined tars and the solvent treatment of pitch have been examined by high‐temperature gas‐liquid chromatography. The solvent extracts of the pitch have also been analysed by infra‐red spectroscopy and for elementary composition. It has been possible to account for a large part of the tar oils as quantities of individual compounds and to indicate the main changes in chemical types associated with the increasing number of rings in the less soluble pitch frac

ISSN:0021-8871    

DOI:10.1002/jctb.5010110402

出版商:John Wiley&Sons, Ltd    

年代:1961

数据来源: WILEY

摘要:

AbstractA combined pressure vessel and conductivity cell suitable for use at pressures up to 16 atm. and temperatures up to 200° is described. This equipment has been used to measure electrical conductivities of sodium phosphates and phosphoric acid at low concentrations (phosphates 0.0006–0.01M, H3PO40.13M).With each substance, the conductivity attained a maximum and then decreased with increasing temperature. The temperatures where conductivities were maximum were lower than those previously reported for uni‐ and di‐valent

ISSN:0021-8871    

DOI:10.1002/jctb.5010110403

出版商:John Wiley&Sons, Ltd    

年代:1961

数据来源: WILEY

摘要:

AbstractThe mass spectra of a number of fluorinated cyclohexanes, cyclohexenes and cyclohexadienes have been measured and the correlations between the fragmentation patterns and molecular structure have been studied.

ISSN:0021-8871    

DOI:10.1002/jctb.5010110404

出版商:John Wiley&Sons, Ltd    

年代:1961

数据来源: WILEY

摘要:

AbstractMixtures containing continuous vertical retort tar and small concentrations of long‐ chain polymers have been examined by a number of different flow and brittle tests. In general the addition of polymer causes an increase in resistance to flow without greatly affecting the viscosity/temperature behaviour or the brittleness. A method of rheological analysis is presented for characterising the viscoelastic properties. The practical implications of the measurements are discusse

ISSN:0021-8871    

DOI:10.1002/jctb.5010110405

出版商:John Wiley&Sons, Ltd    

年代:1961

数据来源: WILEY

摘要:

AbstractThe capacities of Type‐I strongly basic anion‐exchange resins from de‐ionisation plant for water‐purification have been determined. In use, the strongly basic capacity decreased, as did the total capacity but at a smaller rate, while the weakly basic capacity increased. The mechanism of these changes and the effect on the operational performance of the resins are considered. The relative degrees of cross‐linking of the resins were also investigated; these tended to decrease during use but only to a slig

ISSN:0021-8871    

DOI:10.1002/jctb.5010110406

出版商:John Wiley&Sons, Ltd    

年代:1961

数据来源: WILEY