3230 変動荷重下における炭素鋼の摩耗形態に及ぼす諸因子の影響(S36-2 トライボロジーの基礎と応用(2),21世紀地球環境革命の機械工学:人・マイクロナノ・エネルギー・環境)

概要

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The objective of the present study is to investigate the effects of mechanical and chemical factors on the wear modes of a carbon steel under varying load. Pin-on-disk type unlubricated wear tests of the carbon steel in contact with itself were conducted under constant or increased loading in wet air. The effects of work-hardening and oxidation of worn surface at a low load in the first stage on the wear mode at high loads in the second stage were mainly investigated. Quasi-mild wear of low rate appears after the change in load to levels above the upper critical load under constant loading, resulting in the considerable increase in upper critical load. Tensile or compressive plastic strain was given to specimens, with which wear tests were conducted under constant loading but the upper critical load has been little increased. The oxide films on disk worn-surface were removed with dilute HCl and NaOH just before an increase in load so that severe wear has appeared after a incubation period. From the results, the influence of the oxidation on the appearance of quasi-mild wear is greater than that of the work-hardening.
一般社団法人日本機械学会の論文
2008-08-02