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An electrolytic deposition procedure has been used to completely seal the open porosity of plasma sprayed alumina with Cu. Scanning electron microscopy (SEM) showed that the open porosity was sealed, leaving only closed pores in the coating. Both sealed and unsealed materials have been evaluated and compared using standard tribological testing, including scratch testing, abrasion, particle erosion...
Electro-deposition of Ni has been used in an attempt to seal the open porosity of plasma sprayed alumina coatings. By means of scanning electron microscopy, the open porosity was found to be completely sealed. The as deposited and sealed coatings have been evaluated and compared by scratching, abrasion, particle erosion and sliding wear tests to determine the effects of the sealing treatment on the...
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