✍ Scribed by Władyslaw Czupryk
No coin nor oath required. For personal study only.
The tribological wear of copper or tin bronze or antimony bronzesrsteel 45 sliding pairs was studied. Exploitational surface layers Ž . ESL , forming in conditions of oxidative wear during lubricated sliding, were analyzed by AES to explain the iron frictional transfer mechanism. According to the studies' findings, this mechanism does not consist in the transfer of pure iron but in the transfer of very Ž fine, hard and brittle oxide products of wear of the sliding pair's steel member to the friction surface of the softer member copper, . bronze , in which they become embedded, and the rubbing of the formed composite structure against the friction surface of the counter-member. The above mechanism explains many cases of excessive wear of steel by bronze reported in tribological literature.
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The effects of lubricating-oil additive zinc dialkyldithiophosphate (ZDDP) on the friction and wear properties of polymers and their composites sliding against GCr15 bearing steel were studied by using an MHK-500 ring-on-block wear tester (Timken wear tester). Then the frictional surfaces of the fri