RESEARCH
- Material sciences and production techniques -

FLAME SPRAYING ON GLASS

The purpose of this research has been to broaden the scope of the flame spraying process by using it on hot, blown glass. By flame spraying it is possible to create easily coloured glass articles and to give glass new character by metal coating. This research project started in 1991 and will continue until the end of 1996. 

The flame spraying method is conventionally used to cover metallic articles with metallic, plastic or ceramic coatings. The coating material is in powder form. The powder is first fed into the spray gun and then sprayed with a carrier gas to the flame. The flame accelerates the droplets and they impact on the material to be coated. The particles have enough energy to form small plates when hitting the surface. As the coating proceeds, many plates are formed and the surface is completely covered. 

The flame spraying process itself is very easy with combine to the glassworking. Using masks, the designer can vary the surface decorations, which cannot be made by other methods at the hot stage. 

Feeding glass powder to the spray gun turned out to be one of the most complicated proplems. In this project a new powder feeding system was build for glass powders. It was also necessary to design new glass materials wtih special chemical properties and a structure suitable for flame spraying. 

The latest application in this research project is working with liquids in the reactive flame spray process on glass. 

This research aims to develop new applications of the glass colouring process in industry and studio production. The research is mainly financed by the Technological Develpment Center of Finland (TEKES). 

Partners in Finland have been Tampere University of Technology, Department of Physics, and Åbo Akademi University, Department of Inorganic Chemistry. The State University of New York at Stony Brook, Department of Materials Science & Engineering has also been involved with the research. 

Flame sprayed glass objects designed by Markus Eerola have been on displayed in several exhibitions: 
1994: Glass Art Now, Finnish Institute, Copenhagen, Denmark, 
New Finnish Glass, Reykjavik, Iceland. 
Krrr, Hyvinkää Art Museum , Hyvinkää, Finland. 
Glass, Gallery Arioso, Stockholm, Sweden 
1993: Pearlfishers, Gallery Otso, Espoo, Finland, 
1992: For the children of Joukahainen, Finnish Glass Museum, Riihimäki, Finland 

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Markus Eerola, @
Research Scientist

University of Art and Design Helsinki UIAH
Department of Ceramics and Glass
Hämeentie 135 C 
FIN-00560 Helsinki, Finland 
phone: +358 9 75630273, fax: +358 9 75630275