利用程序升温热重法研究了TiH2的热分解动力学,考察了升温速率对热分析谱图的影响,并用单一升温速率法和多个升温速率组合法分别作了动力学分析.结果表明:反应的起始温度Tm,峰顶温度Tp均随着升温速率的升高而增大;两种计算方法得到的动力学参数有所不同,单一升温速率法计算出的E和A值遵循关系式:ln A=0.144 9 E-0.076 04,即存在动力学补偿效应;多个升温速率组合法对E的计算,则依赖于升温速率的组合.
参考文献
| [1] | Chen DH.;Peng ZH.;Jian LH.;Pan QC.;Qin ZB.;Yuan YH. .Thermal decomposition kinetics of M (mnt) (5-NO2-phen) (M = Co-II, Cu-II, Zn-II) complexes[J].Thermochimica Acta: An International Journal Concerned with the Broader Aspects of Thermochemistry and Its Applications to Chemical Problems,1998(1/2):291-295. |
| [2] | Tetsuji M;Masao I;Shigeru A et al.Alporas aluminum foam:production process,properties,and applications[J].Advances in Engineering Materials,2002,2(04):179-183. |
| [3] | Matijasevic-Lux B;Banhart J;Fiechter S;Gorke O;Wanderka N .Modification of titanium hydride for improved aluminium foam manufacture[J].Acta materialia,2006(7):1887-1900. |
| [4] | 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. |
| [5] | Kennedy A R .The effect of TiH2 heat treatment on gas release and foaming in Al-TiH2 preforms[J].Scripta Materialia,2002,47(11):763-767. |
| [6] | A.E. MARKAKI;T. W. CLYNE .THE EFFECT OF CELL WALL MICROSTRUCTURE ON THE DEFORMATION AND FRACTURE OF ALUMINIUM-BASED FOAMS[J].Acta materialia,2001(9):1677-1686. |
| [7] | I.Duarte;J.Banhart .A Study of Aluminium Foam Formation—Kinetics and Microstructure[J].Acta materialia,2000(9):2349-2362. |
| [8] | C.C.Yang;H.Nakae .Foaming characteristics control during production of aluminum alloy foam[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,2000(1/2):188-191. |
| [9] | 李蓉华 .氢化钛热分解动力学研究[D].东北大学,2004. |
| [10] | 胡荣祖;史启祯.热分析动力学[M].北京:科学出版社,2001 |
| [11] | 何翊,孙挺.升温速率对β-CD/1-MCP热分解反应动力学的影响[J].东北大学学报（自然科学版）,2006(04):469-472. |
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