Performance Thermally Sprayed Coatings Tests when Subject to Adhesive Wear

A.B.C. Arnt; M.R. da Rocha; G.F. Marangoni

doi:10.4028/www.scientific.net/MSF.802.349

Paper Titles

Characterization of Commercial Co-Cr-Alloy Powder Used in Selective Laser Sintering
p.329

Influence of the Temperature in the Direct Forming Laser Process of 316L Stainless Steel with CO₂ Laser
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Selective Laser Sintering of Different Powders of Co-Cr-Mo
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Atomization and Selective Laser Melting of a Cu-Al-Ni-Mn Shape Memory Alloy
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Performance Thermally Sprayed Coatings Tests when Subject to Adhesive Wear
p.349

Plasma Sintering-Carburizing of 410 LHC Steel in Carbon Containing Atmosphere
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Characterization of the AISI 304 Alloy Treated in a Large Vacuum Chamber PIII System with a New HV Pulser
p.359

Evaluation of Heat Absorption in Iron Ore Using Microwave Energy Source
p.367

Mechanical Characterization of a Steel AISI 43100 Submitted to Different Routes of Heat Treatments
p.373

HomeMaterials Science ForumMaterials Science Forum Vol. 802Performance Thermally Sprayed Coatings Tests when...

Performance Thermally Sprayed Coatings Tests when Subject to Adhesive Wear

Abstract:

In this study it was evaluated the performance of coatings based on Cr₃C₂-25 (80Ni-20Cr) and CrC-30NiCr. The coatings were deposited by high velocity oxygen fuel (HVOF), with an average thickness of layer equal to 7.8μm. Samples were subjected to adhesive wear test (according ASTM G99) with a pin Ø 6 mm (SAE 52100). In the test was applied normal force equal to 50 N and tangential speed equal to 0.5 m/s. The test time was 30 minutes at room temperature, without lubrification. The wear surfaces were characterized by optical microscopy, scanning electron microscopy and X-ray diffraction. The microhardness of the coatings was also evaluated. The results showed that the coating based on Cr₃C₂-25(80Ni-20Cr) presented a performance ten times higher in wear resistance when compared to coating CrC-30NiCr.