Lubricating Effect of Tungstates on Sliding Friction of Metals at High Temperature.

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  • 金属材料の高温摩擦においてタングステン酸塩が示す潤滑効果
  • キンゾク ザイリョウ ノ コウオン マサツ ニ オイテ タングステンサンエン ガ シメス ジュンカツ コウカ

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For survey of new solid lubricants which are effective in high temperature, 18 oxides were examined on stainless steel in high temperature up to 1000°C. Test equipment used was a ring / disk type friction tester, and test condition were 10 mm/s in speed and IMPa in contact pressure. The results showed that potassium tungstate allowed smooth sliding up to 1000°C without seizure. The combination of acid oxide and basic one causes low friction, and coefficient of friction shows relation to the difference of Ionic Field Strength.

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