Effect of copper-clad graphite on the properties of iron base sintered materials

Yas, D. S.; Osvetimskii, L. A.; Zaporozhets, A. A.; Podmokov, V. B.; Lupanov, A. F.

doi:10.1007/bf00797928

Cited by 1 publication

(2 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…(i) metal base: iron for strength and thermal stability 4,5 (ii) abrasives: ceramic oxides/carbides, phosphides, etc for wear resistance [4][5][6] (iii) thermal conductors: copper as it remains predominantly unalloyed with the iron matrix 7,8 (iv) anti-seizure: graphite dispersed in the metal matrix to resist the possibility of welding with the rotor and for smooth engagement 4-6 (v) friction modifiers: sulphides/sulphates to stabilise the coefficient of friction. 9,10 Concerns have been shown 7,8 for higher additions of copper owing to the growth of the friction layer during sintering. Although higher copper additions are desirable to restrict temperature rise during heavy duty applications of brake pads, it is restricted to no more than 9 wt-% in sintered brake pads due to excessive growth.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

New processing technology for manufacture of heavy duty metalloceramic brake pads

2011

View full text Add to dashboard Cite

Heavy duty metalloceramic brake pads are currently manufactured by compacting and sintering the metal powder mixture containing about 20-30% non-metallic constituents. This technology suffers from certain limitations such as poor density, weak joining of backing plates with friction material layers, large consumption of hydrogen gas during processing, etc. etc. In order to overcome these limitations, new technology based on 'hot powder forging' has been developed in the present investigation. This technique offers efficient diffusion bonding between friction elements and the steel container which happens to become the backing plate of the brake pad assembly. The brake pads developed through this technology have been tested for military aircrafts namely AN-32 and MIG-27. It has been observed that the pads made through this technology are superior in performance in comparison with the pads made by sintering technology. Furthermore, the chemistry employed in the present technology is much simpler. This paper deals with detailed characterisation of brake pads suitable for AN-32 and MIG-27 aircrafts.

show abstract

Section: Introductionmentioning

confidence: 99%

“…Concerns have been shown7,8 for higher additions of copper owing to the growth of the friction layer during sintering. Although higher copper additions are desirable to restrict temperature rise during heavy duty applications of brake pads, it is restricted to no more than 9 wt‐% in sintered brake pads due to excessive growth.…”

Section: Introductionmentioning

confidence: 99%