Unlike most Thermal Spray Coating Technology, Cold Spray does not require a combustion process. This is a tremendous application advantage, for example we can by-pass the hot-work permit in the oil & gas industry. Basically, Cold Spray and majority of Thermal Spray differ in three main ways; process parameters, coating materials and the resulting coating properties, and thus, Cold Spray process allowing applications that are not normally feasible or easily achievable and allowable by others.
In general, Cold Spray is probably requiring the lowest heat range. Cold Spray coating can create a mixture of metallic and non-metallic free-standing structure via ballistic impingement upon a substrate, which upon impact with a substrate or previously deposited particles convert the particle's kinetic energy into plastic deformation, strain, and ultimately heat. The bonding mechanism is a combination of mechanical interlocking and metallurgical bonding from re-crystallization at highly strained particle interfaces.
BENEFITS OF COLD SPRAY
There are many benefits of Cold Spray Coating. Examples are:
· High Quality Coating;
· Low Energy Consumption;
· Repairing dents, localized damage;
· Minimal heat input to substrate with no “heat-affected zone” ;
· Coating has no phase transformation, physical and chemical properties of particles are remaining original due to low heat;
· allows to spray thermally sensitive materials and highly dissimilar materials combinations, due to the fact that the adhesion mechanism is purely mechanical;
· Spraying high melting point because there is no particle-melting required;
· No grit blasting required, huge saving in cost and time;
· Dynamic recrystallization with refined grains has been observed between particle and particle bonding region;
· No concern on oxygen sensitive materials, aluminium, copper, titanium, and carbide composites (e.g. tungsten carbide),] as well as coatings made from amorphous alloys;
· No oxide formation, alloy decomposition, combustion product entrapment;
· Flexibility in substrate-coating selection;
· High thermal and electrical conductivity of coatings;
· High homogeneity of coatings;
· No toxic wastes;
· No combustion; increased operational safety due to the absence of high temperature gas jets and radiation;
· High density and hardness of coatings;
TYPES OF COLD SPRAY TECHNOLOGY
There are two types of CS.
1) Low Pressure Cold Spray (LPCS)
2) High Pressure Cold Spray (HPCS)
While main Cold Spray theory of the background technology is the same, key differentiation of LCPS and HPCS are mainly:
· The complexity of the machine design
· Compressed air versus inert gas of Nitrogen and Helium as working gas
· Pressure rating
· Heating power rating
· Flow rate
The global thermal spray coatings market size is expected to showcase an exponential growth by reaching USD 17,631.2 million by 2027.
This is attributable to the growing aerospace industry and the increasing demand for weight reduction in aircraft to improve performance and fuel efficiency that propels the demand for innovative thermal spray coatings across the globe.
Fortune Business Insights, in its latest report, titled, “Thermal Spray Coatings Market Size, Share & Industry Analysis, By Material (Ceramic, Metal & Alloy, Polymer, Intermetallic, and Others), By Technology (Flame Spray, High-Velocity Oxygen Fuel (HVOF) Spray, Electric Arc Spray, Plasma Spray, Cold Spray, and Others), By Application (Aerospace, Industrial Gas Turbine, Automotive, Medical, Paper & Printing, Oil & Gas, Steel, and Others), and Regional Forecast, 2020-2027.”, observes that the market stood at USD 10,235.2 million in 2019 and is projected to exhibit a CAGR of 7.8% between 2020 and 2027.The Report IncludeThe market report includes quantitative and qualitative analysis of several factors such as the key drivers and restraints that will affect market growth.
In addition to this, the report provides insights into the regional analysis.
It includes the competitive landscape that involves leading companies and novel products as well as major collaborations.
The research analyst has adopted several research methodologies such as PESTEL and SWOT analysis to extract information about the current trends and industry developments that will drive the market growth in the forthcoming years.
