マリンエンジニアリング
Online ISSN : 1884-3778
Print ISSN : 1346-1427
ISSN-L : 1346-1427
海水揺動すべり軸受材の磨耗特性
川添 強池上 国広林 慎之諸星 彰三松村 恵介
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2005 年 40 巻 3 号 p. 402-407

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A friction and wear test in seawater environment was performed in seawater to select the materials for oscillatory sliding bearings employed in multi-degrees of freedom couplings that make feasible ocean floating bodies of multi connecting floating systems for marine developments and applications. We tested and analyzed tha five kinds of plastics including PTFE, phenolic and PA (poly-amid) resins, and two kinds of anticorrosive metallic alloys sliding against the SUS304 shaft. were tested and analyzed. The test environments used included seawater, atmosphere and seawater-atmosphere repeated conditions, and also the operating contact pressure was changed under a fixed sliding speed.
The results obtained indicate that PA resin and anti-corrosive copper alloy with graphite have better wear resistance than other materials and can be put to practical use for the marine couplings. The PTFE resins show low friction coefficient but high wear rate, and the phenolic resins show both high friction coefficient and high wear rate. Pb-Cu sintered alloy is of no practical use because of an indication of seizure in atmosphere.

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