Ionix show their strength
The results are impressive with the Ionix HPZ material bending until a level of 0.5% strain to failure, almost 2.5 times the figure for PZT which snapped at 0.21%.
Ionix Advanced Technologies Limited has released a video showing the strength of their HPZ piezoelectric materials in relation to conventional Lead Zirconate Titanate (PZT).
The video shows a four point bend test which measures the strain to failure of both PZT and one of Ionix’s HPZ piezoelectric materials. Essentially the test looks at the effect on strips of HPZ and PZT when mechanical pressure is applied. The results are impressive with the Ionix HPZ material bending until a level of 0.5% strain to failure, almost 2.5 times the figure for PZT which snapped at 0.21%.
Materials, sensors, and actuators capable of operating in extreme environments
PZT or Lead Zirconate Titanate has dominated the landscape of piezoelectric materials in the past. However PZT has its limitations; slow operating temperature and yield stress, high lead content, and mechanical friability. This limits the use of the material in particular applications such as in aerospace, automotive, chemical plant, oil and gas exploration, and nuclear.
This is where Ionix’s range of piezoelectric materials comes to the foreground as they can operate in extreme environments, withstanding stresses of over 500MPa as well as temperatures up to 450oC. The development of Ionix’s materials will propel piezoelectric applications into new areas, for example the upstream and downstream oil and gas industry, where permanent on-pipe condition monitoring would become possible.
This means that Ionix’s materials and devices have the potential to offer significant cost and energy savings, by allowing more efficient and reliable process and inspection operations in extreme environments, where existing technology is unable to operate effectively
A spin-out from the University of Leeds, Ionix has created a range of proprietary high performance piezoelectric materials that can operate in high temperature, high work environments, and that enable it to supply sensors, actuators, and transducers which address applications and markets not accessible to existing piezoelectric systems.
Professor Andrew Bell, head of the University’s Institute for Materials Research, headed the research into new piezoceramic materials. The new products, developed by Dr Tim Comyn and Dr Tim Stevenson in Professor Bell’s group, are compatible with existing manufacturing methods for piezoelectric ceramics and therefore can be mass-produced at similar cost to current materials.
The materials are the subject of a number of international patent applications including reduced and zero-lead compositions.