INTERMETALLIC COATINGS AFTER HEAT RESISTANCE TEST

Evaluation of intermetallic coatings processed by PTA

Plasma Transferred Arc hardfacing (PTA) is an excellent tool for surface tailoring as it allows for the manipulation of coatings chemical composition. In particular in-situ alloy development can be achieved during the deposition of different powder mixtures. In this work powder mixtures of Ni-Al, Nb-Al and Fe-Al were deposited by PTA. Coatings were characterized for their mechanical features at...

Corrosion Resistance of Bolt Coatings

"tin Coatings for Wear Resistance and Gold-like Decorative Coatings"

Titanium Nitride (TiN) coatings have led the way for providing increased wear resistance and extended life of cutting tools, whether carbide inserts or high-speed steel. Where the earliest applications were for high temperature substrate materials (carbides) and chemical vapor deposition (CVD) was the process of choice, later developments in the physical vapor deposition (PVD) technology, espec...

Study of Corrosion Behavior of Mufflers for High Heat Resistance Coatings

In this study powder coated samples were compared with liquid paint samples. These samples are used for high heat resistance coatings on mufflers used by automobile industry. The samples were prepared by silicone resins. Different physical mechanical tests were carried out to compare powder and liquid based samples. After performing the tests HR 600 sample has the highest adhesion strength, thi...

Surface Characterization and Tribological Behaviour of Ti-Ni-P Intermetallic Coatings on Titanium Alloys

In this research, tribological behavior of Ti-Ni-P intermetallic coatings on titanium substrates have been investigated under dry reciprocating conditions. Hardness profile testing results exhibit that high surface hardness has been attained and static indentation result shows that the intermetallic coating has better adhesion strength than the conventional ceramic coatings. In this respect, th...