The Science & Technology
of Glass
Cambridge - Monday 4th to
Wednesday 6th September 2017



Khalid Rmaydh Muhammed
<Khalid.R.Muhammed@student.shu.ac.uk >

article posted 22 May 2017

Khalid Rmaydh Muhammed is a third 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.


Lead-Free electrical Sodium Potassium Niobate Glass-Ceramics
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 piezoelectric ceramics. 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 key properties of the material in comparison to the ceramics currently produced using classic solid state routes. Borate, silicate and borosilicate glasses containing Na2O, K2O and Nb2O5 were prepared using melt processing and were subsequently heat treated to form glass-ceramics. Initial results and conclusions based on density measurements, Raman, XRD, DTA, SEM-EDS and electrical property analysis will be presented here.

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