Experimental Investigation of the Effect of Brake Disconnished by Hvof Method

Year 2019, Volume: 3 Issue: 3, 57 - 61, 30.09.2019

Mustafa Babagiray , Hüseyin Bayrakçeken , Mehmet Çakmakkaya , Faruk Emre Aysal , Salih Karanfil

https://doi.org/10.30939/ijastech..557701

Abstract

In this study; brake discs
used in vehicles have investigated. The behavior of these discs during braking,
wear and braking distance performance of the coated and uncoated surfaces
during the braking process were evaluated. The surface of the commercially
produced discs was coated with a thickness of 1 mm using the HVOF (High
Velocity Oxy-Fuel) coating method. In the coating process CoNiCrAlY, WC-Co
(88/12), NiCrBSi and MoNiCrBSiFe (Mo 25%) 4 (four) different ceramic powders
were used respectively. Wear and brake distance tests of coated and uncoated
discs were performed by braking in a total of 20 brakes in 15 seconds on the
brake-suspension tester.

After the brake tests, the
surface roughness changes of the discs, surface hardness change, mass loss and
the abrasion values on the disc surfaces were determined due to the brake force
applied to the discs during the experiment. The most wear on the discs was on
the CoNiCrAlY ceramic powder coated disc at 0,4 g, while the least wear
occurred on the disc coated with NiCrBSi ceramic powder at 0,2 g.

Keywords

Brake Disc, HVOF, Brake Test, Wear, Ceramic

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