Effect of oxidation treatment on wear resistance for TiAl-Mn intermetallic compound.
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Wear resistance of reactive-sintered TiAl-Mn which was coated with oxide film was evaluated by pin-on-disk type wear test. Oxide film was coated by using oxidation reaction in air at 1173K. The two coated TiAl-Mn alloys show much less wear loss than uncoated ones. After wear test, oxide film remains partialy in the coated Ti-47.3Al-1.7Mn. On the contrary, oxide film of the coated Ti-43.2Al-1.6Mn is worn over. The low wear loss in the later is due to hard Ti-rich layer which is formed under oxide film produced during oxidation treatment. Thickness of Ti-rich layer increases with titanium content of TiAl-Mn or oxidizing temperature. It is supposed that Ti-rich layer is hardened by solutioning oxygen. Excellent wear resistance of the oxidized TiAl-Mn is caused by not only oxide film but also Ti-rich layer. This superior wear resistance surface can be obtained easily by oxidation in air of reactive-sintered TiAl-Mn containing chlorine.
- 一般社団法人 軽金属学会の論文
一般社団法人 軽金属学会 | 論文
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