Next Article in Journal
Economic Analysis of an Integrated Annatto Seeds-Sugarcane Biorefinery Using Supercritical CO2 Extraction as a First Step
Next Article in Special Issue
The Manufacturing of High Porosity Iron with an Ultra-Fine Microstructure via Free Pressureless Spark Plasma Sintering
Previous Article in Journal
Reuse of Textile Dyeing Effluents Treated with Coupled Nanofiltration and Electrochemical Processes
Previous Article in Special Issue
Processing, Mechanical and Optical Properties of Additive-Free ZrC Ceramics Prepared by Spark Plasma Sintering
Open AccessFeature PaperArticle

Creep of Polycrystalline Magnesium Aluminate Spinel Studied by an SPS Apparatus

Department of Materials Engineering, Ben-Gurion University of the Negev, P.O. Box 653, Beer-Sheva 84105, Israel
Author to whom correspondence should be addressed.
Academic Editor: Eugene A. Olevsky
Materials 2016, 9(6), 493;
Received: 8 May 2016 / Revised: 2 June 2016 / Accepted: 16 June 2016 / Published: 20 June 2016
A spark plasma sintering (SPS) apparatus was used for the first time as an analytical testing tool for studying creep in ceramics at elevated temperatures. Compression creep experiments on a fine-grained (250 nm) polycrystalline magnesium aluminate spinel were successfully performed in the 1100–1200 °C temperature range, under an applied stress of 120–200 MPa. It was found that the stress exponent and activation energy depended on temperature and applied stress, respectively. The deformed samples were characterized by high resolution scanning electron microscope (HRSEM) and high resolution transmission electron microscope (HRTEM). The results indicate that the creep mechanism was related to grain boundary sliding, accommodated by dislocation slip and climb. The experimental results, extrapolated to higher temperatures and lower stresses, were in good agreement with data reported in the literature. View Full-Text
Keywords: creep; spinel; SPS creep; spinel; SPS
Show Figures

Figure 1

MDPI and ACS Style

Ratzker, B.; Sokol, M.; Kalabukhov, S.; Frage, N. Creep of Polycrystalline Magnesium Aluminate Spinel Studied by an SPS Apparatus. Materials 2016, 9, 493.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

Back to TopTop