TiC-Al金属陶瓷自蔓延高温合成中的显微组织转变

中国有色金属学报, 2004, 14(12): 2096-2101.

TiC-Al金属陶瓷自蔓延高温合成中的显微组织转变

肖国庆 ^1, , 范群成 ^2, , 顾美转 ^3, , 金志浩 ^4,

1.西安交通大学,金属材料强度国家重点实验室,西安,710049;西安建筑科技大学,材料科学与工程学院,西安,710055

2.西安交通大学,金属材料强度国家重点实验室,西安,710049

3.西安交通大学,金属材料强度国家重点实验室,西安,710049

4.西安交通大学,金属材料强度国家重点实验室,西安,710049

关键词： TiC-Al , 金属陶瓷 , 自蔓延高温合成 , 组织转变

Microstructural evolution during self-propagating high temperature synthesis of TiC-Al cermet

用燃烧波淬熄法研究了TiC-Al金属陶瓷自蔓延高温合成中显微组织的转变,淬熄试样中保留了未反应区、反应区及反应完成区.用扫描电子显微镜观察了燃烧反应中的显微组织转变过程,用能谱仪分析了各微区的成分变化,测量了燃烧温度和燃烧波蔓延速度,并用XRD分析了反应产物相的组成.结果表明,Ti-C-Al系燃烧反应起始于铝粉熔化后与固态钛粉反应生成Al3Ti,并随着反应温度的升高,TiC颗粒从溶有钛和碳的铝熔体中析出;当Al3Ti熔化后,从熔体中也析出TiC颗粒,最终产物组织中除大量的TiC颗粒分布于铝基体中外,还发现有少量的Al3Ti存在,可能与使用的钛粉和铝粉的原料颗粒较粗有关.

参考文献

[1]	Smagorinski ME.;Grenier S.;Brzezinski T.;Kim G.;Tsantrizos PG. .The properties and microstructure of Al-based composites reinforced with ceramic particles[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,1998(1):86-90.
[2]	Tjong S C;Ma Z Y .Microstructural and mechanical characteristics of in site metal matrix composites[J].Materials Science and Engineering,2000,29(01):49-113.
[3]	Gotman I;Koczak M J .Fabrication of matrix in-situ composites via self-propagating synthesis[J].Materials Science and Engineering A,1994,187(03):189-199.
[4]	邹正光,傅正义,袁润章.自蔓延高温合成TiC复合添加剂增强铁基粉末冶金材料[J].中国有色金属学报,2001(03):408-411.
[5]	严有为,刘生发,范晓明,傅正义,魏伯康.工艺参数对SHS-铸造钢基表面TiC-Fe梯度复合涂层结构的影响[J].中国有色金属学报,2003(01):157-161.
[6]	Fan Q. -C. .Mechanism of combustion synthesis of TiC-Fe cermet[J].Journal of Materials Science,1999(1):115-122.
[7]	Quncheng Fan;Huifen Chai;Zhihao Jin .Microstructural evolution of the titanium particles in the in-situ composition of TiC-Fe by the combustion synthesis[J].Journal of Materials Processing Technology,1999(1/3):102-107.
[8]	Fan QC.;Jin ZH.;Chai HF. .ROLE OF IRON ADDITION IN THE COMBUSTION SYNTHESIS OF TIC-FE CERMET[J].Journal of Materials Science,1997(16):4319-4323.
[9]	Fan Q C;Chai H F;Jin Z H .Formation of layershaped pores in TiC-Fe cermet by combustion synthesis[J].Transactions of Nonferrous Metals Society of China,2000,11(05):760-763.
[10]	Choi Y;Rhee S W .Effect of aluminium addition on the combustion reaction of titanium and carbon to form TiC[J].Journal of Materials Science,1993,28(24):6669-6675.
[11]	Lee WC.;Chung SL. .IGNITION PHENOMENA AND REACTION MECHANISMS OF THE SELF-PROPAGATING HIGH-TEMPERATURE SYNTHESIS REACTION IN THE TITANIUM-CARBON-ALUMINUM SYSTEM[J].Journal of the American Ceramic Society,1997(1):53-61.
[12]	Choi Y;Mullins M E;Wijayatilleke K et al.[J].Metallurgical and Materials Transactions,1992,23(09):2387-2392.
[13]	ZhangEL;ZengSY;YangB et al.A study on the kinetic process of reaction synthesis of TiC: party 1.experimental research and theoretical model[J].Metallurgical and Materials Transactions A:Physical Metallurgy and Materials Science,1999,30(07):1147-1151.
[14]	Zhang Erlin;Yang Bo;Zeng Songyan .formation mechanism of TiC in Al/Tic composites prepared By direct reaction synthesis[J].Transactions of Nonferrous Metals Society of China,1998(1):92-96.
[15]	Fan Quncheng,Chai Huifen,Jin Zhihao.MICROSTRUCTURAL EVOLUTION DURING COMBUSTION SYNTHESIS OF TiC-Fe CERMET[J].中国有色金属学会会刊（英文版）,1999(02):286-291.
[16]	Baker H.ASM Handbook: Alloy Phase Diagrams[M].Ohio:Materials Park,ASM International,1992

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材料期刊网

TiC-Al金属陶瓷自蔓延高温合成中的显微组织转变

Microstructural evolution during self-propagating high temperature synthesis of TiC-Al cermet

参考文献