3212 環境調和型水系潤滑剤の特性(S37-1 サステイナブルトライボロジー(1),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)

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In order to develop environmental conscious lubricants, frictional properties of water-based lubricants were investigated. Coefficients of friction of steel (SKD 11) specimens and TiN with preferred grain orientations coated specimens against SUJ2 were measured in a naphthen oil, an ethanol, an ion-exchanged water added a soluble cutting oil and an ion-exchanged water added emulsifying agent using a ball-on-disc friction tester. As a result, the coefficients of friction of all specimens were 0.1 to 0.2 in the lubricants excluding the ion-exchanged water. For TiN coatings with (111) preferred grain orientation, the coefficients of friction in the ion-exchanged water added emulsifying agent (0.1 wt% to 5 wt%) were equal to those in the naphthen oil with a viscosity of 2.6 cSt (at 40 ℃). It was thought that the ion-exchanged water added emulsifying agent could be used for TiN coatings.
2008-08-02