Critical and Impeding Pressures of Al Evaporation during ISM Processing of NiAl

材料科学技术（英文）, 2003, 19(6): 571-575.

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1.School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China

2.School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China

3.School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China

4.School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China

5.School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China

6.School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China

Critical and Impeding Pressures of Al Evaporation during ISM Processing of NiAl

Keywords： ISM process

In this paper, the critical pressure Pcrit and impeding pressure Pirnpe of the elemental evaporation were defined and studied based on the calculation of the relationship between the evaporation loss rate Nm and the chamber pressure p during melting of NiAl alloys. When the chamber pressure is lower than Perit or higher than Pimpe, Nm tends to be the maximum or minimum value and remains almost unchanged. However, declines sharply with the increase of the chamber pressure when Pcrit＜P＜Pimpe. A method has been put forward to calculate the Pcrit and Pimpe of Al evaporation in a Ni-XAl (X=25～50 at. pct) melt. The calculation result shows that the pcrit or Pimpe is a second-order function of the molar percentage of Al and the melting temperature.

参考文献

[1]	G. Sauthoff .Multiphase intermetallic alloys for structural applications[J].Intermetallics,2000(9/11):1101-1109.
[2]	D Golberg;M Demura;T Hirano .[J].Journal of Crystal Growth,1998,186:624.
[3]	S Frank;S V Divinski;U Sodervall;C Herzig .[J].Acta Materialia,2001,49:1399.
[4]	P Nash;O Kleppa .[J].Journal of Alloys and Compounds,2001,321:228.
[5]	K Sakamoto;K Yoshikawa;T Kusamichi;T Onove .[J].ISIJ International,1992,32(04):616.
[6]	J J Guo;Y Liu;Y Q Su;H S Ding G Z Liu J Jia .[J].Metallurgical and Materials Transactions,2000,31(04):837.
[7]	Jinglu YU;Jihe WEI.Phenomenon of Heat and Mass Transportation during Metallurgical Process[M].北京:冶金工业出版社,1981:355.
[8]	Yongnian DAI.Vacuum Metallurgy of Nonferrous Metals[M].北京:冶金工业出版社,1998:55.
[9]	E S Machlin .[J].Transactions AIME,1960,218(04):314.
[10]	T Tanaka;K Kurita;A Kuroda .[J].ISIJ International,1992,32(04):572.
[11]	Xiandeng KANG.Vacuum Metallurgy[M].上海:上海科学技术出版社,1980:69.
[12]	X Y Ding;P Fan;W Z Wang .[J].Metallurgical and Materials Transactions,1999,30(02):271.
[13]	F Negrini;M Fabbri;M Zuccarini;E Takeuchi M Tani .[J].Energy Conversion and Management,2000,41:1687.

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Critical and Impeding Pressures of Al Evaporation during ISM Processing of NiAl

参考文献