摘要
为研究自蔓延和热爆两种燃烧合成方式对产物Ni3Al组织的影响,采用扫描电子显微镜(SEM)观察对比了合成试样中的不同显微组织,利用X射线衍射(XRD)分析比较了合成产物相的差别,并通过透射电镜(TEM)比较了两种方式下合成相粒子析出情况。结果表明:自蔓延反应产物形成共晶组织,热爆反应则生成枝晶组织;虽然两种方式反应物的XRD分析结果相同,但是自蔓延反应产物的相峰强度显著高于热爆反应产物;热爆反应产物相粒子产生的偏聚比自蔓延反应产物相明显。
In order to research the effect of combustion synthesis modes SHS （Self-propagating High-temperature Synthesis and TE （Thermal Explosion） on structure of product Ni3Al, the different microstructures were compared by means of SEM （Scanning Electron microscope）. The results of XRD （X-Ray Diffraction） analysis indicated the difference between the products synthesized by the two modes The phase particles precipitated from the product were compared by TEM （Transmission Electron Microscopy）. The experiment results show that eutectic morphology were observed in the product of SHS and dentrite morphology in TE product; the results of XRD analysis indicate that the main phases formed in the SHS and TE reaction were the same, but the peak value of the SHS product diffraction was stronger than the value of TE product; the segregation of the particles produced by TE was more obvious than by SHS.
出处
《稀有金属材料与工程》
SCIE
EI
CAS
CSCD
北大核心
2010年第A01期346-349,共4页
Rare Metal Materials and Engineering
关键词
Ni3Al燃烧合成方式
自蔓延合成:热爆合成
Ni3Al
combustion synthesis mode
self-propagating high-temperature synthesis
thermal explosion
