ivoryhorseman
Aerospace
- Feb 5, 2013
- 18
Hi All,
I had recently performed S-phase nitride coating on S-143 precipation hardened steel to improve cavitation erosion properties of the material. however the the cavitation erosion property worsened after the s-phase nitride coating was performed, instead of improving it.
I am confused as to why this has taken place since, S-phase nitriding should provide more strength to the surface rather than ordinary S-143 ppt hardened steel. does cavitation erosion has to do with anything with surface finish and not the strength etc.
Can sombody give a an explanation on what could have possibly gone wrong.
is polyurethane coating a good way to prevent cavitation erosion.
I had recently performed S-phase nitride coating on S-143 precipation hardened steel to improve cavitation erosion properties of the material. however the the cavitation erosion property worsened after the s-phase nitride coating was performed, instead of improving it.
I am confused as to why this has taken place since, S-phase nitriding should provide more strength to the surface rather than ordinary S-143 ppt hardened steel. does cavitation erosion has to do with anything with surface finish and not the strength etc.
Can sombody give a an explanation on what could have possibly gone wrong.
is polyurethane coating a good way to prevent cavitation erosion.