Flame spray is a thermal spray coating process that uses a flame to melt and propel materials onto a surface. This technique typically involves a fuel gas and oxygen mixture, which creates a high-temperature flame. The molten particles are then sprayed onto a substrate, forming a protective or functional coating. This method is commonly used in various industries, including aerospace, automotive, and manufacturing. Flame spray can apply coatings made from metals, ceramics, or polymers, enhancing properties like wear resistance, corrosion protection, and thermal insulation. The versatility of flame spray makes it a valuable tool for improving the performance of components.