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★ ★ carlxiong(金币+1,VIP+0): 1-4 16:18 carlxiong(金币+1,VIP+0): 1-4 16:19 carlxiong(金币+1): 2010-03-18 12:54
1、FN ISI Export Format
VR 1.0
PT J
AU Xiong, BW
Long, WY
Chen, Z
Xia, C
Wan, H
Yan, YW
AF Xiong, BoWen
Long, WenYuan
Chen, Zhe
Xia, Chun
Wan, Hong
Yan, YouWei
TI Effects of element proportions on microstructures of Nb/Nb5Si3 in situ composites by spark plasma sintering
SO JOURNAL OF ALLOYS AND COMPOUNDS
LA English
DT Article
DE High-temperature alloys; Spark plasma sintering; Microstructure; Niobium silicide
ID TEMPERATURE; STRENGTH; BEHAVIOR
AB Nb/Nb5Si3 composites were successfully fabricated by a spark plasma sintering (SPS) technology. The effects of element (Nb and Si) proportions on the microstructures of the synthesized composites were mainly investigated. The results show that element proportions strongly affect the microstructures of Nb/Nb5Si3 composites; Nb/Nb5Si3 in situ composites up to 99.59% of theoretical density were fabricated by SPS technology, and the microstructures of the fabricated composites comprise the synthesized Nb5Si3 and the uniformly distributed Nb particles. Moreover, with the increase in the Si content from 6% to 20% (atom fraction), the volume fraction of the synthesized Nb5Si3 in the composites increases, whereas the content and size of Nb particles decrease obviously. The higher shrinkage and densification for Si content (16 at.% and 20 at.%) close to the eutecticcomposition take place. When sintering temperature over 1400 degrees C, the shrinkage obviously retards and finally stops. (c) 2008 Elsevier B.V. All rights reserved.
C1 [Xiong, BoWen; Long, WenYuan; Xia, Chun; Wan, Hong] Nanchang Hangkong Univ, Coll Mat Sci & Engn, Nanchang 330063, Peoples R China.
[Chen, Zhe] Nanchang Inst Technol, Nanchang 330013, Peoples R China.
[Yan, YouWei] Huazhong Univ Sci & Technol, State Key Lab Die Technol, Wuhan 430074, Peoples R China.
RP Xiong, BW, Nanchang Hangkong Univ, Coll Mat Sci & Engn, Nanchang 330063, Peoples R China.
EM bowenxiong@163.com
FU National Natural Science Foundation of China 50276023 [50276023]; Nanchang Hangkong University Foundation of China [EC200701021]; Jiangxi Provincial department of Science and Technology Foundation of China [DB200701049]
FX This research was financially supported by the National Natural Science Foundation of China ( Grant Number: 50276023), Nanchang Hangkong University Foundation of China ( Grant Number: EC200701021), and Jiangxi Provincial department of Science and Technology Foundation of China ( Grant Number: DB200701049).
NR 12
TC 1
PU ELSEVIER SCIENCE SA
PI LAUSANNE
PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND
SN 0925-8388
J9 J ALLOYS COMPOUNDS
JI J. Alloy. Compd.
PD MAR 5
PY 2009
VL 471
IS 1-2
BP 404
EP 407
DI 10.1016/j.jallcom.2008.03.095
PG 4
SC Chemistry, Physical; Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering
GA 431TG (检索号)
UT ISI:000265086300090 (收录号) |
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