Sliding abrasive wear characteristic of TIG cladded TiC reinforced Inconel825 composite coating

Abstract

TiC reinforced Inconel 825 alloy matrix composite coating with different weight percentage (20, 40, and 60) of TiC has been produced by TIG cladding process. With the increase in TiC percentage in the produced coating a drastic alteration in the coating morphology perceived predominantly due to the degree of melting of pre-deposited TiC particles. The sliding abrasive wear measured through the height loss of the coated pin extracted from the TiC-Inconel825 composite coatings executed against alumina abrasive wheel show the effect of TiC percentage as well as the sliding velocity during the test. The worn surfaces characterized by SEM suggested that the abrasion wear is predominant for removal of the coating along with delamination through oxidation. The coefficient of friction of the coating assessed against harden steel plate (HRC58) indicated a gradual reduction from 0.71 to 0.60 with the increase in TiC content in the TiC-Inconel825 composite coating.