Next Article in Journal
Effect of Solvents, Their Mixture and Thermal Annealing on the Performance of Solution Processed Polymer Light-Emitting Diodes
Next Article in Special Issue
Co-Dispersion Behavior of ZrB2–SiC–B4C–C Powders with Polyethyleneimine
Previous Article in Journal
Liquid Foam Templates Associated with the Sol-Gel Process for Production of Zirconia Ceramic Foams
Previous Article in Special Issue
TiB2-Based Composites for Ultra-High-Temperature Devices, Fabricated by SHS, Combining Strong and Weak Exothermic Reactions
Materials 2013, 6(5), 1980-1993; doi:10.3390/ma6051980
Article

Effect of Milling on the Mechanical Properties of Chopped SiC Fiber-Reinforced ZrB2

, * ,
 and
Received: 22 March 2013; in revised form: 8 May 2013 / Accepted: 8 May 2013 / Published: 15 May 2013
(This article belongs to the Special Issue Ultra-high Temperature Ceramics)
Download PDF [705 KB, uploaded 15 May 2013]
Abstract: This work aims at studying the effect of the milling conditions on the microstructure and mechanical properties of a ZrB2-5 vol% Si3N4 matrix reinforced with chopped Hi-Nicalon SiC fibers. Several composites were obtained using different milling conditions in terms of time, speed and type of milling media. The composites were prepared from commercial powders, ball milled, dried and shaped, and hot pressed at 1720 °C. Their relative bulk densities achieved values as high as 99%. For each material the fiber length distribution, the extent of reacted fiber area and matrix mean grain size were evaluated in order to ascertain the effects of milling time, milling speed and type of milling media. While the fracture toughness and hardness were statistically the same independently of the milling conditions, the flexural strength changed. From the results obtained, the best milling conditions for optimized mechanical properties were determined.
Keywords: milling; chopped fiber; fracture toughness; strength milling; chopped fiber; fracture toughness; strength
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Export to BibTeX |
EndNote


MDPI and ACS Style

Pienti, L.; Sciti, D.; Silvestroni, L.; Guicciardi, S. Effect of Milling on the Mechanical Properties of Chopped SiC Fiber-Reinforced ZrB2. Materials 2013, 6, 1980-1993.

AMA Style

Pienti L, Sciti D, Silvestroni L, Guicciardi S. Effect of Milling on the Mechanical Properties of Chopped SiC Fiber-Reinforced ZrB2. Materials. 2013; 6(5):1980-1993.

Chicago/Turabian Style

Pienti, L.; Sciti, D.; Silvestroni, L.; Guicciardi, S. 2013. "Effect of Milling on the Mechanical Properties of Chopped SiC Fiber-Reinforced ZrB2." Materials 6, no. 5: 1980-1993.


Materials EISSN 1996-1944 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert