Characterization of alpha reversible reaction beta PbF sub(2) phase transition by several techniques

X-ray Diffraction (XRD), Dynamic-Mechanical Analysis (DMA), Impedance Spectroscopy (IS), and Scanning Electron Microscopy (SEM) have been used to the study of alpha arrow right beta phase transition in PbF sub(2) pellets pressed uniaxially in the 37 MPa-480 MPa range. A mixture of beta and alpha pha...

Full description

Saved in:
Bibliographic Details
Published in:Journal of materials science 2000-01, Vol.35 (13), p.3263-3268
Main Authors: Portella, K F, Rattmann, K R, de Souza, G P, Garcia, C M, Cantao, M P, Muccillo, R
Format: Article
Language:English
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:X-ray Diffraction (XRD), Dynamic-Mechanical Analysis (DMA), Impedance Spectroscopy (IS), and Scanning Electron Microscopy (SEM) have been used to the study of alpha arrow right beta phase transition in PbF sub(2) pellets pressed uniaxially in the 37 MPa-480 MPa range. A mixture of beta and alpha phases is detected and the alpha -phase content at room temperature is found to be dependent on the applied load. The dilation results on DMA, the phase identification by XRD, the ionic conductivity results by IS analysis and the SEM micrographs of beta -PbF sub(2) pellets show evidences for the increase in alpha -phase content at the expense of the beta -phase. SEM analysis provided further evidence for specimen sintering under heating at approximately 498 K.
ISSN:0022-2461