AlMgB_(14)-30%TiB_2复合材料的高温氧化行为  

Oxidation Behavior of AlMgB_(14)-30%TiB_2 at High Temperature

作　　者：庄蕾 戴红霞[1] 孟庆森[2] 

机构地区：[1]扬州工业职业技术学院机械工程学院,江苏扬州225127 [2]太原理工大学材料科学与工程学院,山西太原030024

出　　处：《材料保护》2017年第9期10-12,共3页Materials Protection

基　　金：扬州工业职业技术学院校级科研课题重点项目(2016xjzk003)资助

摘　　要：为了探讨AlMgB_(14)-30%TiB_2(质量分数)复合材料的高温氧化行为,采用电场激活与压力辅助烧结(FAPAS)法制备了这一复合材料。以SX2-4-10箱式电阻炉高温氧化10 h(600~1 000℃),研究了其不同温度下的氧化行为;采用X射线衍射仪(XRD)分析了其氧化表面的相结构,以扫描电子显微镜(SEM)观察氧化后的表面和截面形貌。结果表明:AlMgB_(14)-30%TiB_2复合材料在600℃时发生氧化反应,相为TiB_2,AlMgB_(14)相发生氧化反应的温度为800℃;氧化温度达到1 000℃时,氧化层表面由一层玻璃状的B2O3组成。In order to study the oxidation behavior of A1MgB14-30%（ mass fraction） TiB2 composites at high temperature, AIMgB14-30%TiB2 composites were prepared by field - activated and pressure assisted synthesis （FAPAS） , and the oxidation behavior under different temperature wes tested in SX2-4-10 chamber electric oven for 10 h of high temperature （600-1 000 ℃ ） oxidation. In addition, the phase structure of oxi- dation surface was analyzed by X-ray diffractometer （XRD） , and the surface and interface morphologies of composites after oxidation treatment were observed by scanning electron microscope （SEM）. Results showed that the TiB2 phase was oxidized at the temperature of 600 ℃, while the oxidation temperature of A1MgBI4 phase was 800 ℃. When the oxidation temperature reached 1 000 ℃ , the surface of oxide layer was com- posed of gaseous B203.

关 键 词：AIMgB14-TiB2复合材料 电场激活与辅助烧结法 高温氧化 氧化行为 

分 类 号：TB33[一般工业技术—材料科学与工程]