Quantitative study of particle size distribution in an in-situ grown Al-TiB2 composite by synchrotron X-ray diffraction and electron microscopy - Mines Saint-Étienne Access content directly
Journal Articles Materials Characterization Year : 2015

Quantitative study of particle size distribution in an in-situ grown Al-TiB2 composite by synchrotron X-ray diffraction and electron microscopy

Abstract

Synchrotron X-ray diffraction and transmission electron microscopy (TEM) were applied to quantitatively characterize the average particle size and size distribution of free-standing TiB2 particles and TiB2 particles in an in-situ grown Al-TiB2 composite. The detailed evaluations were carried out by X-ray line profile analysis using the restricted moment method and multiple whole profile fitting procedure (MWP). Both numerical methods indicate that the formed TiB2 particles are well crystallized and free of crystal defects. The average particle size determined from different Bragg reflections by the restricted moment method ranges between 25 and 55 nm, where the smallest particle size is determined using the 110 reflection suggesting the highest lateral-growth velocity of (110) facets. The MWP method has shown that the in-situ grown TiB2 particles have a very low dislocation density (similar to 10(11) m(-2)) and their size distribution can be described by a log-normal distribution. Good agreement was found between the results obtained from the restricted moment and MWP methods, which was further confirmed by TEM. (C) 2015 Elsevier Inc. All rights reserved.

Dates and versions

emse-01500978 , version 1 (03-04-2017)

Identifiers

Cite

Y Tang, Z Chen, Andras Borbely, G Ji, S.Y. Zhong, et al.. Quantitative study of particle size distribution in an in-situ grown Al-TiB2 composite by synchrotron X-ray diffraction and electron microscopy. Materials Characterization, 2015, 102, pp.131-136. ⟨10.1016/j.matchar.2015.03.003⟩. ⟨emse-01500978⟩
146 View
0 Download

Altmetric

Share

Gmail Mastodon Facebook X LinkedIn More