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Powder Metallurgy ,Volume 58, Issue 3 (July 7 2015) ,pp. 193¨C196

Reaction synthesis of ultrafine titanium diborides and nitrides reinforced steel matrix composites in situ by spark plasma sintering


X. G. Zeng

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Reaction synthesis of ultrafine titanium diborides and nitrides reinforced steel matrix composites in situ by spark plasma sintering
×÷Õß:Zeng, XG (Zeng, X. G.)
POWDER METALLURGY
¾í: 58  ÆÚ: 3  Ò³: 193-196
DOI: 10.1179/1743290114Y.0000000120
³ö°æÄê: JUL 2015
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A novel technique for synthesis of in situ titanium diborides and nitrides reinforced steel matrix composite (TiB2-TiN/Fe) was put forward. In situ TiB2-TiN/Fe composite was synthesised by spark plasma sintering of mechanically mixed ferrotitanium and boron nitride (BN) powders. The phase evolution during sintering indicates that the TiB2-TiN reinforcements are formed in situ as follows: first step, the solid/solid interface reaction between ferrotitanium and BN, resulting in the formation of a small amount of TiB2 and TiN below 1000 degrees C; second step, the solid-liquid solution precipitation reaction in the Fe-Ti-B-N system, resulting in most of TiB2 and TiN reinforcement formation at similar to 1100 degrees C. The microstructure investigation reveals that utrafine TiB2 and TiN reinforcements with a size of similar to 1 mu m are homogeneously distributed in the Fe matrix.
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×÷Õ߹ؼü´Ê:Metal matrix composites; Spark plasma sintering; X-ray analysis; Microstructure
KeyWords Plus:MECHANICAL-PROPERTIES
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ͨѶ×÷ÕßµØÖ·: Zeng, XG (ͨѶ×÷Õß)
              Sichuan Univ Sci & Engn, Coll Mat & Chem Engn, Chengdu 643000, Sichuan, Peoples R China.
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              [ 1 ] Sichuan Univ Sci & Engn, Coll Mat & Chem Engn, Chengdu 643000, Sichuan, Peoples R China
µç×ÓÓʼþµØÖ·:dengjg10@163.com
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MANEY PUBLISHING, STE 1C, JOSEPHS WELL, HANOVER WALK, LEEDS LS3 1AB, W YORKS, ENGLAND
Àà±ð / ·ÖÀà
Ñо¿·½Ïò:Metallurgy & Metallurgical Engineering
Web of Science Àà±ð:Metallurgy & Metallurgical Engineering
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ÎÄÏ×ÀàÐÍ:Article
ÓïÖÖ:English
Èë²ØºÅ: WOS:000358407900006
ISSN: 0032-5899
eISSN: 1743-2901
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Impact Factor (Ó°ÏìÒò×Ó): Journal Citation Reports®
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