THERMAL EXPLOSION SYNTHESIS IN Ti-C-Al SYSTEM

Acta Metall Sin

1996, Vol. 32

Issue (10): 1102-1106 DOI:

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THERMAL EXPLOSION SYNTHESIS IN Ti-C-Al SYSTEM

SUN Xiaodong;MEI Bingchu;YU AN Runzhang;LIAO Guosheng(Wuhan University of Technology; Wuhan 430070)(Advanced Materials Research Institute;Wuhan University of Technology; Wuhan 430070)(Manuscript received 1995-12-15;in revised form 1996-06-08)

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Abstract TiC-Al composites were prepared from powders of Ti,C and Al by means of thermal explosion technique.The effects of heating rate and aluminium content on the thermal explosion process,phase composition and microstructure of the reaction products have been studied.By differential thermal analysis,X-ray diffraction and scanning electron microscopy,it is shown that the explosive reaction in the Ti-C-Al system proceeds in such a way that aluminium initially reacts with titanium to form Ti-Al compounds with heat evolution,and then the reaction between titanium and carbon,and the decomposition of Ti-Al compounds to titanium and aluminium are subsequently followed.The certain heating rate and aluminium content are needed if the thermal explosion occurs at low temperature in Ti-C-Al system.As mass fration of aluminium was increased over the range of 10% to 50%,the grain size of TiC decreased approximately from 5.0μm to 0.5μm.

Key words: thermal explosion synthesis TiC Al.

Received: 18 October 1996

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https://www.ams.org.cn/EN/ OR https://www.ams.org.cn/EN/Y1996/V32/I10/1102

1HoltJB,MunirZA,JMaterSci,1986;21:2512GrebeHA,AdvaniA,ThadhaniN,KottkeT．MetallTrans,1992;23A:23653ChoiY,RheeSW．JMaterSci,1993;28:6669

[1]	Y.Hao and G.Petzow (Max-Planck-Institut fur Metallforschung; Institut fur Werkstoffwissenschaft; Pulverme-tallurgisches Laboratiorium; Heisenbergstr. 5; 70569 Stuttgart; Germany)F.Mucklich (Institute fur Werkstoffwissenschaftern Universitat des Saarlandes; 66041 Saarbrucken). INVESTIGATION OF THE DISLOCATION STRUCTURE IN HCP SINGLE CRYSTALS BY MEANS OF THE ROCKING CRYSTAL METHOD[J]. 金属学报, 1997, 33(2): 198-206.
[2]	H.Gleiter(Forschungszentrum Karlsruhe; 76021 Karlsruhe; Germany). NANOSTRUCTURED MATERIALS[J]. 金属学报, 1997, 33(2): 165-174.
[3]	XIONG Weihao;HU Zhenhua;CUI Kun(State Key;Laboratory;of Dies Technology;Huazhong University of Science and Technology;Wuhan 430074)(State Key Laboratory of Dies Technology;Huazhong University of Science and Technology;Wuhan 430074)(Manuscript received 1996-04-26). TRANSITIONAL LAYER OF PHASE INTERFACES IN Ti(C,N)-BASED CERMET[J]. 金属学报, 1996, 32(10): 1075-1080.
[4]	WANG Mingzhang;LIN Shi;XIAO Jimei(University of Science and Technology Beijing;Beijing 100083)(Departiment of Material Physics;University of Science and Technology Beijing;Beijing 100083)(Manuscript received 1996-01-18;in revised form 1996-06-20). DEFORMATION AND DAMAGE AT GRAIN BOUNDARY ON FATIGUED ALUMINUM BICRYSTALS[J]. 金属学报, 1996, 32(10): 1049-1055.
[5]	GU Yuefong; DENG Wen; GUO Jianting; (Institute of Meial Research; Chinese A cademy of Sciences; Shenyang 110015)XIONG Liangyue; LIN Dongliang (Institute of Metal Research; Chinese A cademy Sciences. Shenyang 110015)(Shanghai Jiaoiong University; Shanghai 200030). PAT STUDY OF EFFECT OF Zr ON DEFECTS IN Ni_3Al ALLOY[J]. 金属学报, 1995, 31(17): 238-240.
[6]	XU Dong;ZHU Hong; TANG Lijuan;YANG Yunjie; ZHENG Zhihong; LIU Xianghuai(Ion Beam Laboraiory; Shanghai Institute of Metallurgy; Chinese Academy of Sciences; Shanghai 200050) TA NIGUCHI S; SHIBATA T(Department of Materi als Science and Processing; Faculty of Engineering; Osaka University; Japan)(Manuscript received 1994-02-19; in revised form 1994-11-30). IMPROVEMENT OF OXIDATION RESISTANCE OF TiAl BY ION-BEAM-ENHANCED DEPOSITION OF Si_3N_4 COATINGS[J]. 金属学报, 1995, 31(16): 164-172.

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