CORRELATION BETWEEN OXIDATION BEHAVIOUR AND BORON CONTENT IN Ni_3Al

Acta Metall Sin

1989, Vol. 25

Issue (4): 120-125 DOI:

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CORRELATION BETWEEN OXIDATION BEHAVIOUR AND BORON CONTENT IN Ni_3Al

GUO Jianting;SUN Chao;LI Hui;GUAN Hengrong Institute of Metal Research; Academia Sinica; Shenyang

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GUO Jianting;SUN Chao;LI Hui;GUAN Hengrong Institute of Metal Research; Academia Sinica; Shenyang. CORRELATION BETWEEN OXIDATION BEHAVIOUR AND BORON CONTENT IN Ni_3Al. Acta Metall Sin, 1989, 25(4): 120-125.

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Abstract The effect of boron content (0 to 2.22 at.-%) on isothermal oxida-tion behaviour of Ni_3Al at 750 to 1150℃ for 3 to 100h has been studied. Theresults show that the isothermal oxidation kinetics of Ni_3Al with various B contentsat different temperatures obeys the parabolic law. The compounds with 0.52 to1.37 at.%B show the best oxidation resistance. The morphology and microstructureof the scales have also been investigated.

Key words: intermetallic compound Ni_3Al_2 oxidation boron

Received: 18 April 1989

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https://www.ams.org.cn/EN/ OR https://www.ams.org.cn/EN/Y1989/V25/I4/120

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