4.2.3, 5.9.4, 5.8.1
A Review. The Residual Oil Ash Corrosion Problem. C. J. Slunder. Corrosion, 15, No. 11, 601t-606t (1959) Nov.
Progress being macle in combating accelerated high-temperature corrosion caused by combustion products of residual fuel oils is reviewed. Results of laboratory investigations cannot be compared strictly because of wide differences in testing procedures used. No effective and economical method for removing all offending ash components has been found, although lowering of sodium content by washing with magnesium sulfate solution has been applied successfully to gas turbine operating. Available high-temperature alloys do not have adequate resistance to oil-ash attack at temperatures above 1200 F. Improved corrosion resistance has been attained with certain experimental alloys but some of these are difficult to fabricate into the required form and have inferior mechanical properties. Surface treatments such as aluminizing, chromizing and siliconizing appear to have some inherent protective value, but further development of...
