Friction, Temperature, and Wear Analysis for Ceramic Coated Brake Disks

Author:

Watremez M.1,Bricout J. P.2,Marguet B.1,Oudin J.3

Affiliation:

1. GEC Alsthom Transport Division—C.I.M.T. Unit, Marly, France

2. Mechanical Engineering Laboratory, URA C.N.R.S. 1775, University of Valenciennes, BP 311 F59304, Valenciennes, France

3. Mechanical Engineering Laboratory, URA C.N.R.S. 1775, University of Valenciennes, Valenciennes, France

Abstract

Coating adherence, friction coefficient, surface temperature, and wear mass loss are determined for a set of scale reduced steel brake disks on which NiCr cement based coatings and low conductivity subcoatings are plasma sprayed. The related pads are made of either sintered iron copper or sintered aluminum titanate. It is mainly shown that NiCr-Cr3C2 cermet coating on the disk, coupled with sintered aluminum titanate pad, leads to good damage resistance and stable friction coefficient in the simulation of high speed train braking. Low conductivity sublayers are also involved and it is found that temperatures in disc or pad may be also controlled.

Publisher

ASME International

Subject

Surfaces, Coatings and Films,Surfaces and Interfaces,Mechanical Engineering,Mechanics of Materials

Reference9 articles.

1. Bertier, Y., and Godet, M., 1986 “Me´canique de la tribologie. Applications aux ce´ramiques,” L’industrie Ce´ramique, Sept, pp. 565–568.

2. Boogers, J. A. M., Wanhill, R. J. H., and Hersbach, H. J. C., 1989, “Thermal Shock and Oxydation Resistance of Ceramic Coatings,” Agard Conference Proceedings FRA, Vol. 461, pp. 131–136.

3. Catlaw, H. S., and Jaeger, J. C., 1958, Conduction of Heat in Solids, 2nd ed., Oxford at the Clarendon Press, p. 88.

4. Chuanxian D. , BingtangH., and HuilingL., 1984, “Plasma-Sprayed Wear-Resistant Ceramic and Cermet Coating Materials,” Thin Solid Films, Vol. 118, pp. 485–493.

5. Herman H. , ShankarN. R., 1987, “Survivability of Thermal Barrier Coatings,” Materials Science and Engineering, Vol. 88, pp. 69–74.

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