Preparation of Stainless Steel/Al<sub>2</sub>O<sub>3</sub> Ceramic Composites by Ni-induced Pressureless Infiltration

Han Mengyan; Chen Weiping; Yang Shaofeng

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Preparation of Stainless Steel/Al₂O₃ Ceramic Composites by Ni-induced Pressureless Infiltration
Vol. 30, Issue 8, Pages: 753-757(2010)
Published： 2010 ，
DOI：

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[1]韩孟岩,陈维平,杨少锋.Ni诱导无压浸渗法制备不锈钢/Al_2O_3陶瓷复合材料[J].特种铸造及有色合金,2010,30(08):753-757+684.

Han Mengyan, Chen Weiping, Yang Shaofeng. Preparation of Stainless Steel/Al₂O₃ Ceramic Composites by Ni-induced Pressureless Infiltration. [J]. Special Casting & Nonferrous Alloys 30(8):753-757(2010)
[1]韩孟岩,陈维平,杨少锋.Ni诱导无压浸渗法制备不锈钢/Al_2O_3陶瓷复合材料[J].特种铸造及有色合金,2010,30(08):753-757+684. DOI：

Han Mengyan, Chen Weiping, Yang Shaofeng. Preparation of Stainless Steel/Al₂O₃ Ceramic Composites by Ni-induced Pressureless Infiltration. [J]. Special Casting & Nonferrous Alloys 30(8):753-757(2010) DOI：

摘要

研究了一种Ni诱导无压浸渗法制备陶瓷基复合材料的方法:通过粉末冶金法制备出含Ni颗粒的Ni/Al2O3复相陶瓷预制体

真空状态下

在1600℃以不锈钢熔体无压浸渗该Ni/Al2O3预制体

获得了不锈钢浸渗增强的Al2O3陶瓷基复合材料。采用SEM观察了结合界面的微观形貌

用EDS分析了结合界面附近元素含量的变化

用XRD分析了界面反应产物

以抗拉试验测试了钢与复相陶瓷体的界面结合强度。结果表明

钢熔体可浸渗到陶瓷体内部并与Ni互溶形成新的Ni-Fe合金;不锈钢与复相陶瓷的结合界面存在界面反应;界面结合强度的最大值可达到67.5MPa。

Abstract

A new method of fabricating ceramic matrix composites using Ni-induced pressureless infiltration was presented

that is

firstly

Ni/Al2O3 composite ceramic preforms were prepared by powder metallurgical method

then

the Ni/Al2O3 composite ceramic preforms were infiltrated with stainless steel melt at 1600℃ in vacuum

finally

stainless steel infiltrated reinforced aluminum ceramic matrix composites were successfully prepared. Microstructure of steel/ceramic bonding interface was observed by SEM （scanning electron microscope）

and elemental content in around bonding interface of the composites obtained was analyzed by EDS （energy dispersive spectrometer）

and interfacial reactive products were characterized by XRD （X-ray diffraction）

and interface bonding strength was measured by tensile testing. The results reveal that the steel melt can be infiltrated into the ceramic preforms through Ni liquid channels and form new Ni-Fe alloy. Interfacial reaction occurs between stainless steel and the composite ceramic

and the maximum interfacial bonding strength reaches up to about 67.5MPa.