National Physical Laboratory

Hot off the press

Following the identification of an urgent need for high temperature thermal reference materials, NPL has led a three-year program to explore a possible solution.

Heavy reliance is placed on thermal conductivity values in the marketing of reference materials, and the refractory and ceramic products industries in particular have a need for a low to moderate thermal conductivity reference material (1 < ë < 10 W·m-1·K-1) which is stable and reproducible at temperatures up to at least 1000 °C. However, different organisations in different countries measure or derive the property by a variety of methods which include the line source hot wire method, the guarded hot plate technique and the laser flash diffusivity method. It is well known that there can be significant differences in the conductivity values obtained by these different techniques and hence the requirement for a fully characterised reference material.

As a result NPL led a three year programme of work supported by the European Commission involving eleven partners from six countries to select, procure, characterise and certify the thermal transport properties (thermal conductivity and thermal diffusivity) of Pyroceram 9606, a polycrystalline glass ceramic material for use as reference material up to at least 1000 °C. The project reports and the batch of prepared Pyroceram 9606 specimens were sent to IRMM who had the task of checking the partner's Certification Report and completing any additional issues.

We are pleased to be able to announce that IRMM have finally released the material for sale as a Certified Reference Material. Their contact details are:

dr. ir. Gert Roebben
Reference Materials Unit
Institute for Reference Materials and Measurements
Joint Research Centre of the European Commission
Retieseweg, B-2440 Geel

T: +32-14-571816

Contact: Jiyu Wu

Last Updated: 9 Nov 2015
Created: 1 Feb 2011


Please note that the information will not be divulged to third parties, or used without your permission