Tribological Properties of Magnesium Composite with In-situ Formed Mg 2Si Dispersoids

Katsuyoshi Kondoh, Hideki Oginuma, Tatsuhiko Aizawa

研究成果: Conference contribution

抄録

The tribological properties of the magnesium composite alloys reinforced with solid-state synthesized Mg2Si or Mg2Si/MgO dispersoids are evaluated under wet and dry conditions by using pin on disc type wear test equipment. In the wet type wear test, every composites show a dependence of the friction coefficient on the applied load, which corresponds to Sribeck diagram based on elasto-hydrodynamic lubrication (EHL). The increase of Mg2Si content causes the increase of both the friction coefficient and the total wear by plowing, because Mg2Si dispersoids protruded from the surface are much harder than S35C mild steel counter material. When including MgO dispersoids formed in deoxidizing SiO2 particles by magnesium, the friction coefficient reduces to 0.01-0.02 in oil lubricant. This is due to the "mild offensive effect" by MgO dispersoids which ease the attacking or plowing phenomenon on the counter material, because they are not so hard. In the dry type wear test when using the ADC12 aluminum alloy disks as the counter material, Mg2Si and MgO dipsersoids also show the same effect to reduce the abrasive wear phenomenon. It is also clarified that the graphite particles embedded in the magnesium matrix prevent the fluctuation of the friction coefficient by the formation of the self-lubrication films between the pin and disk specimens.

元の言語English
ホスト出版物のタイトルMaterials Science and Technology 2003 Meeting
編集者A.B. Pandey, K.L. Kendig, J.J. Lewandowski, S.S. Shah
ページ91-101
ページ数11
出版物ステータスPublished - 2003
外部発表Yes
イベントMaterials Science and Technology 2003 Meeting - Chicago, IL
継続期間: 2003 11 92003 11 12

Other

OtherMaterials Science and Technology 2003 Meeting
Chicago, IL
期間03/11/903/11/12

Fingerprint

Magnesium
Wear of materials
Friction
Composite materials
Lubrication
Graphite
Abrasion
Carbon steel
Lubricants
Aluminum alloys
Oils
Hydrodynamics

ASJC Scopus subject areas

  • Materials Science(all)

これを引用

Kondoh, K., Oginuma, H., & Aizawa, T. (2003). Tribological Properties of Magnesium Composite with In-situ Formed Mg 2Si Dispersoids. : A. B. Pandey, K. L. Kendig, J. J. Lewandowski, & S. S. Shah (版), Materials Science and Technology 2003 Meeting (pp. 91-101)

Tribological Properties of Magnesium Composite with In-situ Formed Mg 2Si Dispersoids. / Kondoh, Katsuyoshi; Oginuma, Hideki; Aizawa, Tatsuhiko.

Materials Science and Technology 2003 Meeting. 版 / A.B. Pandey; K.L. Kendig; J.J. Lewandowski; S.S. Shah. 2003. p. 91-101.

研究成果: Conference contribution

Kondoh, K, Oginuma, H & Aizawa, T 2003, Tribological Properties of Magnesium Composite with In-situ Formed Mg 2Si Dispersoids. : AB Pandey, KL Kendig, JJ Lewandowski & SS Shah (版), Materials Science and Technology 2003 Meeting. pp. 91-101, Materials Science and Technology 2003 Meeting, Chicago, IL, 03/11/9.
Kondoh K, Oginuma H, Aizawa T. Tribological Properties of Magnesium Composite with In-situ Formed Mg 2Si Dispersoids. : Pandey AB, Kendig KL, Lewandowski JJ, Shah SS, 編集者, Materials Science and Technology 2003 Meeting. 2003. p. 91-101
Kondoh, Katsuyoshi ; Oginuma, Hideki ; Aizawa, Tatsuhiko. / Tribological Properties of Magnesium Composite with In-situ Formed Mg 2Si Dispersoids. Materials Science and Technology 2003 Meeting. 編集者 / A.B. Pandey ; K.L. Kendig ; J.J. Lewandowski ; S.S. Shah. 2003. pp. 91-101
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AB - The tribological properties of the magnesium composite alloys reinforced with solid-state synthesized Mg2Si or Mg2Si/MgO dispersoids are evaluated under wet and dry conditions by using pin on disc type wear test equipment. In the wet type wear test, every composites show a dependence of the friction coefficient on the applied load, which corresponds to Sribeck diagram based on elasto-hydrodynamic lubrication (EHL). The increase of Mg2Si content causes the increase of both the friction coefficient and the total wear by plowing, because Mg2Si dispersoids protruded from the surface are much harder than S35C mild steel counter material. When including MgO dispersoids formed in deoxidizing SiO2 particles by magnesium, the friction coefficient reduces to 0.01-0.02 in oil lubricant. This is due to the "mild offensive effect" by MgO dispersoids which ease the attacking or plowing phenomenon on the counter material, because they are not so hard. In the dry type wear test when using the ADC12 aluminum alloy disks as the counter material, Mg2Si and MgO dipsersoids also show the same effect to reduce the abrasive wear phenomenon. It is also clarified that the graphite particles embedded in the magnesium matrix prevent the fluctuation of the friction coefficient by the formation of the self-lubrication films between the pin and disk specimens.

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