Soviet Powder Metallurgy and Metal Ceramics

, Volume 24, Issue 9, pp 690–693 | Cite as

Production and properties of metal-PTFE antifriction materials from atomized bronze powders

  • A. V. Nenakhov
Powder Metallurgical Materials, Parts, and Coatings
  • 27 Downloads

Conclusions

An investigation into the sinterability of loosely poured atomized bronze powders has established that the porosity of resultant sintered bronze skeletons depends on the particle size and shape. The shape of the bronze powder particles has some effect on the antifriction characteristics of a metal -PTFE material, but its coefficient of friction and wear resistance are affected more strongly by the composition of a solid lubricant introduced into the pores of its sintered skeleton. Using a nonspherical rather than spherical bronze powder gives a bronze saving of 15–20% without affecting the good antifriction properties of metal-PTFE materials, by increasing the porosity of their skeletons. Replacing molybdenum disulfide with graphite substantially increases the wear resistance of two-layer metal-PTFE materials and markedly decreases their cost, since the price of molybdenum disulfide is more than 20 times that of graphite.

Keywords

Particle Size Porosity Graphite Molybdenum Disulfide 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

Literature cited

  1. 1.
    I. M. Fedorchenko, A. V. Nenakhov, and I. I. Beloborodov, “Antifriction properties of a PTFE-impregnated porous skeleton,” Poroshk. Metall., No. 1, 55–57 (1980).Google Scholar
  2. 2.
    I. I. Beloborodov and A. V. Nenakhov, “Metal-plastics antifriction materials from spherical and nonspherical powders,” in: Increasing the Wear Resistance and Prolonging the Useful Life of Machines, Summaries of Papers [in Russian], Ukr. Nauchno-Issled. Inst. Nauchn. Tekh. Inform., Kiev (1970), pp. 24–29.Google Scholar
  3. 3.
    I. I. Beloborodov, V. F. Grechishkin, A. V. Nenakhov, and I. B. Pyasik, “Bearing materials and frictional units for operation without lubricant,” Poroshk. Metall., No. 1, 102–105 (1977).Google Scholar
  4. 4.
    V. I. Odelevskii, “Calculation of the overall conductivity of heterogeneous systems,” Zh. Tekh. Fiz.,21, No. 6, 678–685 (1951).Google Scholar
  5. 5.
    V. V. Skorokhod and S. M. Solonin, “Kinetics of interparticle contact growth in the sintering of unpressed parts,” Poroshk. Metall., No. 2, 74–79 (1972).Google Scholar
  6. 6.
    A. P. Semenov and Yu. É. Savinskii, Metal-PTFE Bearings [in Russian], Mashinostroenie, Moscow (1976).Google Scholar
  7. 7.
    L. F. Kolesnichenko, V. V. Polotai, L. V. Zabolotnyi, et al., “Technique for the simultaneous friction and wear study of powder metallurgy materials,” Poroshk. Metall., No. 3, 61–66 (1970).Google Scholar
  8. 8.
    A. A. Kut'kov and P. D. Derlugyan, “Causes of the influence exerted by ambient atmosphere on the lubricating properties of molybdenum disulfide,” in: Summaries of Papers to an All-Union Scientific-Technical Conference on Production Control over the Frictional and Wear Characteristics of Machine Units, Sevastopol, Oct. 12–14, 1983 [in Russian], Moscow (1983), pp. 122–123.Google Scholar

Copyright information

© Plenum Publishing Corporation 1986

Authors and Affiliations

  • A. V. Nenakhov
    • 1
  1. 1.Institute of Materials ScienceAcademy of Sciences of the Ukrainian SSRUkraine

Personalised recommendations