CoBlast is the controlled Co-incidental Blasting of abrasive and coating particles on a reactive metal substrate, which replaces the substrates oxide layer with the desired surface 'coating', within an ambient temperature and pressure environment. The abrasive removes the oxide layer, exposing the underlying pure metal which is forced to passivate, through the formation of chemical bonds with the available desired coating particles. The passivating substrate has a higher affinity to bond with the desired coating over the abrasive and therefore produces a unique conformal surface typically devoid of abrasive particles.
The process uniquely harnesses the latent energy of the substrate to passivate through the formation of such bonds - requiring no additional thermal input into either the substrate or powder particles. Other key features of the CoBlast process include:
The core technology platform is akin to grit blasting - a standard surface preparation procedure employed prior to existing high performance coating processes. A general rule of thumb relating to the type of substrate geometries suitable for CoBlasting is the following - 'If you can grit blast (or micro blast) it, you can CoBlast it.' Bespoke and standard equipment options including nozzle, media reclamation and automation capabilities are available through EnBio and its equipment partners.
The absence of a required thermal input preserves the crystalline characteristics of the coating powder thus allowing the controlled recycling of the powder blend for particular applications - further improving the economic advantages of CoBlast.
View CoBlast Video of titanium screw threads being CoBlasted with a PTFE ThinKote