Phase transformation mechanism of Al4C3 by the diffusion of Si and a novel method for in situ synthesis of SiC particles in Al melt

被引：35

作者：

Gao, Tong ^{[1
]}

Wang, Dong ^{[1
]}

Du, Xiaofan ^{[1
]}

Li, Dakui ^{[1
]}

Liu, Xiangfa ^{[1
]}

机构：

[1] Shandong Univ, Key Lab Liquide Solid Struct Evolut & Proc Mat, Minist Educ, 17923 Jingshi Rd, Jinan 250061, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2016年 / 685卷

基金：

中国国家自然科学基金;

关键词：

SiC; Al4C3; Phase transformation; Diffusion; Composites; SICP/AL COMPOSITES; GROWTH;

D O I：

10.1016/j.jallcom.2016.05.234

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：

The in situ synthesis of SiC particles in Al melt is reasonably difficult since carbon has quite poor wettability and extremely tiny solubility in the melt. A liquidesolid reaction couple was designed in this paper. Si atoms diffuse into Al4C3 phase, resulting in the gradual transformation Al4C3 -> Al4SiC4 -> SiC. The concentration of Si is a key factor affecting the transformation procedure, and SiC can only be synthesized at a relatively high Si content. By applying the mechanism into casting method, SiCp reinforced Al-18Si alloys were successfully prepared, and the hardness, wear resistance and tensile properties were improved. The method provides a novel suggestion for the preparation of in situ SiC particles reinforced Al-Si matrix composites. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：91 / 96

页数：6

共 19 条

[1] Development of Al356/SiCp cast composites by injection of SiCp containing composite powders [J].

Amirkhanlou, Sajjad ;

Niroumand, Behzad .

MATERIALS & DESIGN, 2011, 32 (04) :1895-1902

[2] Tensile properties of particulate-reinforced metal matrix composites [J].

Doel, TJA ;

Bowen, P .

COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING, 1996, 27 (08) :655-665

[3] A novel approach to synthesize SiC particles by in situ reaction in Al-Si-C alloys [J].

Du, Xiaofan ;

Gao, Tong ;

Li, Dakui ;

Wu, Yuying ;

Liu, Xiangfa .

JOURNAL OF ALLOYS AND COMPOUNDS, 2014, 588 :374-377

[4] The growth and characteristics of CVD SiC-TiC in-situ composites [J].

Lin, TT ;

Chang, JF ;

Hon, MH .

CERAMICS INTERNATIONAL, 1998, 24 (04) :265-272

[5] Influence of oxygen partial pressure on the wetting of SiC by a Co-Si alloy [J].

Mailliart, O. ;

Hodaj, F. ;

Chaumat, V. ;

Eustathopoulos, N. .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2008, 495 (1-2) :174-180

[6]

Meng XY, 2002, RARE METALS, V21, P203

[7] Pressure infiltration of liquid aluminium into packed SiC particulate with a bimodal size distribution [J].

Molina, JM ;

Saravanan, RA ;

Arpón, R ;

García-Cordovilla, C ;

Louis, E ;

Narciso, J .

ACTA MATERIALIA, 2002, 50 (02) :247-257

[8] PHASE-EQUILIBRIA IN THE AL-SI-C SYSTEM [J].

ODEN, LL ;

MCCUNE, RA .

METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1987, 18 (12) :2005-2014

[9]

Ramesh C. S., 2010, MATER DESIGN, V30, P1957

[10]

Ray J., 1993, MAT SCI, V28, P5397

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