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针对制备泡沫铝异型件的熔体路径发泡先驱体二次发泡工艺,对TiH2的氧化处理、变温分解特性、等温分解特性、组织结构进行了研究.研究表明:氧化处理可有效提高发泡剂的开始分解温度,随氧化处理温度的提高,开始分解温度提高;氧化处理后发泡剂的等温分解曲线由低分解平台、快速分解阶段和稳定分解阶段3部分组成,低分解平台随氧化处理温度的提高而延长;400℃/6 h+500℃/1 h+620℃/30 s的处理,可使TiH2的分解量较400℃/6 h+500℃/1 h处理时有所提高;TiH2氧化处理后在其表面生成了厚约1.1~1.5 μm的TixOy致密氧化层,TiH2在300~550℃氧化,其物相依次变化为:TiH1.97-TiH1.97+TiO2-TiH1.97+TiO2+T2O-TiH1.97+TiO2+T2O+TiH.

参考文献

[1] SOSNIK B .Process for making foamlike mass of metal[P].US 2434775,1948-01-20.
[2] John Banhart .Manufacture, characterization and application of cellular Metals and metal foams[J].Progress in materials science,2001(6):559-632.
[3] H.P.蒂吉斯切;左孝青;周芸.多孔泡沫金属[M].北京:化学工业出版社,2005
[4] DAVIES G J;SHU ZH.Metallic foams:their production,properties and applications[J].Journal of Materials Science,1983(18):1899-1911.
[5] GIBSON L J;ASHBY M F.Cellular Solids:Structure and Properties[M].America:Cambridge University Press,1997
[6] GERGELY V;CLYNE B.The Formgrip Process:Foaming of Reinforced Metals[J].Advanced Engineering Materials,2000(04):175-178.
[7] GERGELY V;CLYNE T W.A novel Melt-based Route to Aluminum Foam Production[A].Bremen:MIT Vedag,1999:83-89.
[8] 尚金堂,何德坪.氢化钛二次热分解与铝合金的二次泡沫化[J].中国科学B辑,2005(04):280-285.
[9] 游晓红,王录才,于利民,王芳,李海娟.基于发泡剂预处理的两步法泡沫铝制备工艺研究[J].铸造,2005(03):286-289.
[10] PADURETS L N;DOBROKHOTOVA ZH V;SHILOV A L .Transformation in titanium dihydride phase[J].International Journal of Hydrogen Energy,1999,24(2-3):153-156.
[11] A. R. Kennedy .The effect of TiH_2 heat treatment on gas release and foaming in Al-TiH_2 performs[J].Scripta materialia,2002(11):763-767.
[12] 高洪吾,刘士魁,赵彦波,刘顺华,李长茂.加热氧化处理对TiH2释氢行为的影响[J].中国有色金属学报,2005(03):363-367.
[13] 陈存中.有色金属熔炼与熔炼[M].北京:冶金工业出版社,1987
[14] KENNEDY A R;LOPEZ V H .The decomposition behavior of as-received and oxidized TiH2foaming-agent powder[J].Materials Science and Engineering,2003,A357:260.
[15] F. von Zeppelin;M. Hirscher;H. Stanzick .Desorption of hydrogen from blowing agents used for foaming metals[J].Composites science and technology,2003(16):2293-2300.
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