Formation of AI<sub>4</sub>C<sub>3</sub> Phase and Its Effects on the Graphite （Gr）-Al-Si Composites

Yan Changshu  Luo Wei  Yu Kun Wu Jie

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Formation of AI₄C₃ Phase and Its Effects on the Graphite （Gr）-Al-Si Composites
Issue 1, Pages: 14-15(2003)
Published： 2003 ，
DOI：

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[1]颜长舒,罗维,余琨,吴杰.Al_4C_3的形成及对Gr-Al-Si复合材料的作用[J].特种铸造及有色合金,2003(01):14-15+3.

Yan Changshu Luo Wei Yu Kun Wu Jie. Formation of AI₄C₃ Phase and Its Effects on the Graphite （Gr）-Al-Si Composites. [J]. Special Casting & Nonferrous Alloys (1):14-15(2003)
[1]颜长舒,罗维,余琨,吴杰.Al_4C_3的形成及对Gr-Al-Si复合材料的作用[J].特种铸造及有色合金,2003(01):14-15+3. DOI：

Yan Changshu Luo Wei Yu Kun Wu Jie. Formation of AI₄C₃ Phase and Its Effects on the Graphite （Gr）-Al-Si Composites. [J]. Special Casting & Nonferrous Alloys (1):14-15(2003) DOI：

摘要

Al4 C3 的生成会影响Gr Al Si复合材料的界面反应。然而研究证明在原料中少量的Al4 C3 存在

有利于提高石墨分布的均匀性

又不影响该材料的高温抗拉强度等综合性能。Al4 C3 的形成温度以 5 5 0～ 6 0 0℃为宜。Al4 C3 的含量可用X射线定量分析来确定。

Abstract

It is reported in the literature that the formation of Al 4C 3 can affect the interface reaction of Gr-Al-Si composites. In this paper

however

the results showed that the presence of a small amount of Al 4C 3 phase in raw materials is beneficial to improve u-niform distribution of graphite without detriment to tensile strength of the materials at high temperature. An alternative available approach was presented for preparing qualified Gr-Al-Si composite in gravity casting. The proper Al 4C 3 phase formation temperature ranged from 550 to 600 ℃. Amount of Al4C3 can be measured by X-ray quantitative analysis.