Influence of Preparation Technology on High Temperature Oxidation Behavior of Cu-Si and Fe-Si Alloys

Fu Guangyan; Su Yong; Liu Qun

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Influence of Preparation Technology on High Temperature Oxidation Behavior of Cu-Si and Fe-Si Alloys
Issue 11, Pages: 892-895(2008)
Published： 2008 ，
DOI：

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[1]付广艳,苏勇,刘群.工艺方法对Cu-Si和Fe-Si合金高温氧化行为的影响[J].特种铸造及有色合金,2008(11):892-895+820.

Fu Guangyan, Su Yong, Liu Qun. Influence of Preparation Technology on High Temperature Oxidation Behavior of Cu-Si and Fe-Si Alloys. [J]. Special Casting & Nonferrous Alloys (11):892-895(2008)
[1]付广艳,苏勇,刘群.工艺方法对Cu-Si和Fe-Si合金高温氧化行为的影响[J].特种铸造及有色合金,2008(11):892-895+820. DOI：

Fu Guangyan, Su Yong, Liu Qun. Influence of Preparation Technology on High Temperature Oxidation Behavior of Cu-Si and Fe-Si Alloys. [J]. Special Casting & Nonferrous Alloys (11):892-895(2008) DOI：

摘要

采用电弧熔炼（CA）和机械合金化（MA）方法制备了不同显微组织的二元Fe-Si和Cu-Si合金

并研究了它们在不同温度下纯O2中的高温氧化行为。动力学分析表明

制备工艺对两种合金高温氧化行为的影响结果截然不同

机械合金化方法提高了Cu-Si合金的抗高温氧化性能但降低了Fe-Si合金的抗高温氧化性能。X射线衍射、扫描电镜和能谱分析表明

两种方法制备的Fe-1Si合金氧化生成了Fe2O3→Fe3O4+FeO→FeO→FeO+SiO2结构的氧化膜;而Cu-1.3Si合金氧化后生成了CuO→Cu2O→Cu2O+SiO2→内氧化区结构的氧化膜;虽然两种合金氧化后均生成了富SiO2的混合氧化区

但未形成连续的SiO2保护膜。探讨了晶粒尺寸对合金高温氧化行为的影响机理。

Abstract

High temperature oxidation behaviors of Cu-1Si and Fe-1Si alloy prepared by CA（chemical alloying） and MA（mechanical alloying） were examined in pure O2 atmosphere at different temperatures.Analysis of high temperature oxidation kinetics of the alloys shows that MA is beneficial to improving the oxidation resistance of the Cu-1.3Si alloy

however

it is harmful to the oxidation resistance of Fe-1Si alloy.The structure of Fe-1Si alloy and Cu-1.3Si alloy prepared by MA and CA

respectively

was examined by XRD（X-ray diffraction）

SEM（scanning electronic microscope） and EDX.The oxidation film with Fe2O3→Fe3O4+FeO→FeO→FeO+SiO2 structure is formed in Fe-1Si alloy prepared by both MA and CA

and the oxidation film with CuO→Cu2O→Cu2O+SiO2→internal oxidization zone structure can be generated in Cu-1.3Si alloy.In addition

continuous SiO2 film is absent in mixed oxidation zone with SiO2 enrichment.Effects of grain size on high temperature oxidation behavior of two kinds of alloy prepared by both MA and CA method were described.