Acta Metallurgica Sinica (English Letters) ›› 1990, Vol. 3 ›› Issue (7): 38-42.

• Research paper • Previous Articles     Next Articles

CORRELATION BETWEEN OXIDATION BEHAVIOUR AND BORON CONTENT IN Ni_3Al3

GUO Jianting SUN Chao LI Hui GUAN Hengrong Institute of Metal Research,Academia Sinica,Shenyang,China GUO Jianting,Associate Professor,Institute of Metal Research,Academia Sinica,Shenyang,China   

  • Received:1990-07-11 Revised:1990-07-11 Online:1990-07-11 Published:2009-10-10

Abstract: The effect of boron content(0 to 2.22 at.-% )on isothermal oxidation behaviour of Ni_3Al at 750 to 1150℃ for 3 to 100 h has been studied.The results show that the isothermal oxidation kinetics of Ni_3Al with various B contents at different temperatures obeys the parabolic law. The compounds with 0.52 to 1.37 at.-%B show the best oxidation resistance.The morphology and microstructure of the scales have also been investigated.

Key words: intermetallic compound, Ni_3Al, oxidation, boron