Self-Fluxing and Self-Fusing Alloy Powder Materials for Thermal Spray
For a fully dense coating that is highly abrasion and corrosion resistant, choose a self-fluxing alloy followed by a post-coat fuse, using a thermal spray treatment. Self-fusing alloys offer many advantages of self-fluxing alloys when post-coat fusing is not possible.
Self-fluxing materials are first applied using a thermal spray treatment, for example; flame spray powder such as Thermospray, atmospheric plasma spray or High Speed Oxygen Fuel (HVOF) spray.
Features and benefits of fused coatings
- Fully densely coated microstructure
- High coating hardness
- Excellent wear and corrosion resistance
- Coatings are metallurgically attached to the substrate material
Self-fusing materials are a good alternative for situations where post-coat fusing can degrade the component or the litter material cannot tolerate the temperature of the fusing process. These materials are partially combined during the spraying process without requiring a post-coat fusing.
Features and benefits of self-fusing materials
- Easy-to-use, one-step coating process
- Very low porosity
- Very good coating hardness
- Very good wear and corrosion resistance
- Adheres well to the base
In many cases, coatings are easily applied using a simple combustion powder Thermospray system. Fusing is usually done manually, if necessary, using a simple oxy-acetylene torch. At higher production volumes or mass production, a fully automated system can be used to apply coatings.