欢迎登录材料期刊网

材料期刊网

高级检索

This paper describes a new process for producing titanium aluminides, in particular TiAl, from TiO2 raw material. On the basis of obtained results, the non-completed reaction of TiO2 with Al and Ca in a special reaction vessel results in the production of granulates of titanium aluminides especially Ti3Al and other TiAl phases as the metallic product and Ca12Al14O33 as the non-metallic product. By adding KClO4 in the mixture, a nearly completed reaction can be carried out. The products of this reaction are titanium aluminide particularly TiAl as the metallic part and CaAl4O7 (grossite) as the non-metallic slag part. Both product and slag are produced in a separated form. This process, called KRH-method is described in this article.The scanning electron microscopic microstructure of metallic part of the product shows different phases: the matrix phase is TiAl, where the needle form precipitation is TiAl2 and the plate form precipitation includes TiAl and Ti3Al phases. The microstructure of the remelted metallic part indicates dendritic phase with a lamellar structure comprising of TiAl and Ti3Al phases. The interdendritic phase of TiAl is also seen.

参考文献

[1] S Djanarthany;J C Viala;J Bouin .[J].Materials Chemistry and Physics,2001,72:301.
[2] D M Dimiduk .[J].Materials Science and Engineering,1999,A263:281.
[3] E A Loria .[J].Intermetallics,2002,9:997.
[4] C. M. Austin .Current status of gamma Ti aluminides for aerospace applications[J].Current opinion in solid state & materials science,1999(3):239-242.
[5] P A Bartolotta;D L Krause.[M].NASA/TM,1999:209071.
[6] H Kestler;H Clemens.[A].Wiley-VCH GmbH&Co KGA,Germany,2003:360.
[7] O.M.N.D. Teodoro;J. Barbosa;M. Duarte Naia;A.M.C. Moutinho .Effect of low level contamination on TiAl alloys studied by SIMS[J].Applied Surface Science: A Journal Devoted to the Properties of Interfaces in Relation to the Synthesis and Behaviour of Materials,2004(0):854-858.
[8] J Guo;Y Liu;Y Su;H ding,G Liu and J Jia .[J].Metallurgical and Materials Transactions B:Process Metallurgy and Materials Processing Science,2000,31B:837.
[9] A D Ryabtsev;A A Troyansky;O V Tarlov;V V Pashinskij,M J Bents and V N Radchenko.Problemy Spetsial'noj Electrometallugii[M].,2000:1,75.
[10] J H Moll .[J].JOM-Journal of Minerals & Materials Society,2000,52(05):32.
[11] S J Hales;P Vasquez.[A].Kim,Clemens,Rosenberger,Hampton,USA,2003
[12] K. Uenishi;T. Matsubara;M. Kambara .NANOSTRUCTURED TITANIUM-ALUMINIDES AND THEIR COMPOSITES FORMED BY COMBUSTION SYNTHESIS OF MECHANICALLY ALLOYED POWDERS[J].Scripta materialia,2001(8-9):2093-2097.
[13] F H Froes;R M German .[J].Metal Powder Report,2000,55(06):12.
[14] N. Bertolino;M. Monagheddu;A. Tacca .Ignition mechanism in combustion synthesis of Ti-Al and Ti-Ni systems[J].Intermetallics,2003(1):41-49.
[15] A. Biswas .Porous NiTi by thermal explosion mode of SHS: processing, mechanism and generation of single phase microstructure[J].Acta materialia,2005(5):1415-1425.
[16] N. Travitzky;I. Gotman;N. Claussen .Alumina―Ti aluminide interpenetrating composites: microstructure and mechanical properties[J].Materials Letters,2003(22/23):3422-3426.
[17] R H Fan;B Liu;J D Zang;J Q Bi and Y S Yin .[J].Materials Chemistry and Physics,2005,91:140.
[18] Z W Li;W Gao;D L Zhang;Z H Cai .[J].Corrosion Science,2004,46:1997.
[19] S C Carniglia S C;G L Barna.Handbook of Industrial Refractories Technology,Principles,Types,Properties and Application[M].Park Ridge,USA,1992:627.
[20] D M Beal;S G Lakhwani;L R Pinckney .[P].US 6689707B1,2004.
[21] A Kamali;H Razavizadeh;S M M Hadavi .[P].AU 2005100278B4,2005.
[22] S Jonas;F Nadachowski .[J].Ceramics International,1998,24:211.
[23] S. Jonas;F. Nadachowski;D. Szwagierczak .Low thermal expansion refractory composites based on CaAl{sub}4O{sub}7[J].Ceramics International,1999(1):77-84.
[24] J S Lee;C K Hsu;K S Jaw .[J].Thermochimica Acta,2001,367-368:381.
[25] A Cincotti;R Licheri;A M Locci;R Orru and G Cao .[J].Journal of Chemical Technology and Biotechnology,2003,78(2-3):122.
[26] A Duarte;F Viana;H M C M Santos .[J].Materials Research,1999,2(03):191.
上一张 下一张
上一张 下一张
计量
  • 下载量()
  • 访问量()
文章评分
  • 您的评分:
  • 1
    0%
  • 2
    0%
  • 3
    0%
  • 4
    0%
  • 5
    0%