Metallurgical Investigation (SEM)- Damaged Compressor Bearing
(55x) showing pitting features in the frosted areas.

Determining Cause of Surface Degradation on an Air Compressor Bearing

Surface degradation was found on an air compressor Tin-copper alloy bearing. The degradation consisted of pitting, grooving and metal loss that resulted in a frosted surface appearance. Metallographic and scanning electron microscopy (SEM) techniques were used to determine the cause.

There was no evidence of corrosion or mechanical damage identified. Recrystallization of the bearing contact surfaces in the degraded regions, coupled with the surface pitting and grooving, indicating the degradation resulted from electric discharge damage.


 

We perform materials/weld consulting on components including vessels, piping and other process equipment.
Give us a call to discuss your engineering challenges.

Related Projects

Metallurgical & Engineering Evaluation of Cracks in Aircraft Landing Gear
Property Characterizations of Miner Torque Shafts
Failure Investigation of Wellhead Threaded Closure

Similar Services

Materials & Metallurgical Consulting
Engineering Troubleshooting

Resources

Tom O’Donnell, PE
Links to Engineering Resources
Publications – Heat Exchangers, Pressure Vessels, Weld Applications, Fatigue, Elevated Temperature

(412) 835-5007

Scroll to Top