一体成形・焼結した複層軸受の強度と摩擦摩耗特性

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  • Strength and Friction-Wear Properties of Complex Layer Bearing via Unification Powder Forming and Sintering Process
  • イッタイ セイケイ ・ ショウケツ シタ フクソウ ジクウケ ノ キョウド ト マサツ マモウ トクセイ

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The composite journal bearings which have outer layer with high strength and inner layer with high wear resistance can be used as bearing materials in the industrial high-power machine. The complex layer bearing prepared by unification forming of two different mixed powders with Fe-Cu-C in outer layer and Fe-Cu-C-Ni-Mo in inner layer, and then it was sintered for various heating times at 1378 K~1403 K. Mechanical properties of the bearing were investigated by determinations of Vickers hardness and radial crushing strength. The radial crushing strength of sintered bearing with outer layer composition of Fe-Cu-C mixed powder is increased by the addition of phosphorus of 0.2~0.6 weight% (Specimen F). Nevertheless the apparent density of this complex bearing is low. The friction and wear properties in this bearing also were estimated. The sliding property to hardening steel shaft of the complex layer bearing was invested by swing-type sliding machine. Wear loss volume of Specimen F is low under high applied load it is very suitable for use of the industrial high-power machine.

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