New production process offers greater opportunities for metallic nanoparticles

September 30, 2013

The VTT Technical Research Centre of Finland is developing new techniques for the production of metallic nanoparticles. In a statement issued by the centre it is claimed that their new production reactor, operating at atmospheric pressure, reduces the production costs of multicomponent particles, enabling the production of metallic nanomaterials which are not yet commercially available for research and product development needs.

vvt-nano

VTT’s new reactor operates at atmospheric

pressure

The most significant applications for metallic nanoparticles currently have to do with the utilisation of their optical and magnetic properties, conductive inks and catalysts. These are also the primary areas of focus in the related development work. In the future, state VVT, optically transparent coatings will make it possible to replace precious metals with copper in applications such as solar cells, opto-electronics, and diagnostics.

In the manufacturing of conductive inks the major focus of interest is the replacement of silver with copper, which is significantly cheaper. In this field the small size of the particles affects, for example, their sintering properties, stability of the inks, and printability.

The magnetic properties of metallic nanoparticles are considerably stronger than those of oxides, which are currently being used in the industry. In addition, the use of alloy metals makes it possible to customise particle properties to meet the needs of each application. Potential applications include data storage, magnetic polymer composites, sensor and machine actuators and, in the long term, even the treatment of illnesses.

Since VTT’s new reactor operates at atmospheric pressure its construction and usage costs are low. The process is continuous and allows for affordable source materials to be used, states the research centre. The wastage rate is low, while the produced powders are pure. The reactor is particularly well suited for the production of alloy metal nanoparticles. The particle coating protects the particles from aging during handling and storage, also making it possible to combine organic compounds with metallic particles.

Ari Auvinen, Principal Scientist at VTT, stated that the next nano-innovations from Finland will be related to conductive inks, magnetic polymers, and catalysts. Commercial production of particles also creates interesting business opportunities. “3D printing is currently in increasing demand, and in the coming years, the demand for metallic materials suitable for use with printers is also likely to arise,” stated Auvinen.

www.vtt.fi

 

Powder Metallurgy Review magazine cover

In the latest issue of PM Review…

Download PDF

Extensive Powder Metallurgy industry news coverage, and the following exclusive deep-dive articles and reports:

  • Hot Isostatic Pressing for the production of large, near-net shape components
  • Safeguarding PM part usage in a new automotive industry
  • How to make metal powders., Part 3
  • Company profile: Jiangxi Yuean Advanced Materials

The latest news from the world of metal powders, delivered to your inbox

Don't miss any new issue of PM Review, and get the latest industry news. Sign up to our weekly newsletter.

Sign up

From the industry…

Discover our magazine archive…

The free-to-access PM Review magazine archive offers unparalleled insight into the world of Powder Metallurgy from a commercial and technological perspective through:

  • Reports on visits to leading PM part manufacturers, metal powder manufacturers and industry suppliers
  • Articles on technology and application trends
  • Information on materials developments
  • Reviews of key technical presentations from the international conference circuit
  • International industry news

All past issues are available to download as free PDFs or view in your browser.

 

Browse the archive

 

Looking for PM production equipment, metal powders, R&D support and more?

Discover suppliers of these and more in our
advertisers’ index and buyer’s guide, available in the back of PM Review magazine.

  • Powders & materials
  • Powder process, classification & analysis
  • PM products
  • Atomisers & powder production technology
  • Compaction presses, tooling & ancillaries
  • Sintering equipment & ancillaries
  • Post-processing
  • Consulting & toll sintering
Download PDF
Share via
Copy link