European Journal of Wood and Wood Products

, Volume 75, Issue 3, pp 315–324 | Cite as

Copper and aluminium deposition by cold-plasma spray on wood surfaces: effects on natural weathering behaviour

  • P. Gascón-GarridoEmail author
  • N. Mainusch
  • H. Militz
  • W. Viöl
  • C. MaiEmail author


Atmospheric pressure plasma was used to deposit thin layers of copper and aluminium micro-particles on the surface of Scots pine sapwood (Pinus sylvestris L.) boards. Three different loadings of metal particles were established. Additional wood boards were topcoated with a commercial acrylic binder. Boards were exposed to natural weathering for 18 months. Discolouration of copper-treated boards was slowed down, and the treatment at highest loading displayed the best appearance. Aluminium treatment was not sufficient to prevent or reduce discolouration. The application of an acrylic binder as topcoating enhanced the general appearance of metal-treated boards. Evaluation of treated boards did not reveal any reduction in crack formation or water uptake due to the particle deposition. Infrared spectroscopy suggested that copper does not protect lignin from photo-degradation. Nevertheless, copper treatment reduced fungal infestation on wood; at highest copper loading, blue stain did not penetrate through the treated surface.


Lignin Wood Surface Outdoor Exposure Untreated Wood Wood Board 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.



This work was funded by the German Federal Ministry of Education and Research (BMBF), in the joint research Project “PlaNaWood” (Grant No. 03X5519A).


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Copyright information

© Springer-Verlag Berlin Heidelberg 2016

Authors and Affiliations

  1. 1.Wood Biology and Wood ProductsGeorg-August-University GöttingenGöttingenGermany
  2. 2.Laboratory of Laser and Plasma TechnologiesUniversity of Applied Sciences and ArtsGöttingenGermany
  3. 3.Fraunhofer Application Centre for Plasma and PhotonicsGöttingenGermany

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