Glass - Back to the Future!

Presenting Author:
Khalid Rmaydh Muhammed

article posted 20 April 2016

Khalid Rmaydh Muhammed is a first year PhD student enrolled at Materials & Engineering Research Institute (MERI), Sheffield Hallam University. His research focuses upon development of lead-free Sodium Potassium Niobate glass-ceramics with enhanced piezoelectric and dielectric properties. He obtained his master's degree in Ceramic Engineering Technology in 2007 and Bachelor's degree in Glass and Ceramics Engineering Technology in 2003 from Technical College, Baghdad, Iraq. Before joining the PhD he worked as Assistant lecturer at Middle Technical University- Iraq/ Technical Institute Anbar for five consecutive years.

Preparation of Sodium Potassium Niobate Glass-Ceramics using a Melt Processing Technique

Khalid Rmaydh Muhammed*, Iasmi Sterianou and Paul A. Bingham
Materials and Engineering Research Institute, Sheffield Hallam University, City Campus, Howard Street, Sheffield S1 1WB, UK

Sodium potassium niobate-based ceramics have long been used in electronic devices due to their desirable dielectric properties and have in recent years received considerable attention in the quest for lead-free piezoceramics. Our aim is to prepare sodium potassium niobate glass ceramics using melt processing which could reduce both the time and costs involved in manufacture and also improve the density and electrical properties of the material in comparison to ceramics already being used in the industry. Na2O-K2O-Nb2O5-B2O3 glas s samples were prepared using melt processing and were subsequently heat treated to form glass-ceramics. Initial results and conclusions based on density measurements, XRD, DTA, SEM-EDS and electrical property analysis will be presented.

Keywords: Sodium potassium niobate; glass ceramic; melt processing; heat treatment.