Fabrication of magnesium-boron carbide metal matrix composite by powder metallurgy route: Comparison between microwave and spark plasma sintering

被引：109
作者：
Ghasali, Ehsan [1 ]
Alizadeh, Masoud [1 ]
Niazmand, Morteza [1 ]
Ebadzadeh, Touradj [1 ]
机构：
[1] Mat & Energy Res Ctr, Dept Ceram, Alborz, Iran
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2017年 / 697卷
关键词：
Magnesium; Boron carbide; Metal matrix composite; Spark plasma sintering; Microwave; REINFORCED ALUMINUM-MATRIX; MECHANICAL-PROPERTIES; MICROSTRUCTURE; BEHAVIOR; PERFORMANCE; ALLOYS; FIELD;
D O I：
10.1016/j.jallcom.2016.12.146
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Microwave and spark plasma sintering processes were used to produce magnesium-B4C metal matrix composites by powder metallurgy route. Magnesium powder with 5 wt% B4C in ethanol media was blended in a high-energy ball mill for 10 min. The sintering process was performed at 500 degrees and 670 degrees C using spark plasma sintering and microwave furnace, respectively. XRD investigations revealed the crystallization of MgB2 and Mg2C3 compounds during both sintering processes. The mechanical examinations showed higher bending strength (191 +/- 15 MPa) and microhardness (92 +/- 7 Vickers) of SPS samples rather than microwave samples. FESEM images demonstrated uniform distribution of B4C reinforcements at grain boundaries of metallic matrix. The MAP analysis of SPS samples approved the formation of new compounds as a result of the reaction between magnesium and B4C. (C) 2016 Elsevier B.V. All rights reserved.
引用
收藏
页码：200 / 207
页数：8
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