High-temperature alloys are generally required to have two properties at the same time, i.e. excellent high-temperature mechanical properties and high-temperature corrosion resistance. But in fact, for the same alloy, these two aspects of performance are sometimes contradictory to each other, it is impossible to optimize at the same time. To solve the contradiction between the two, only by the high temperature alloy base material itself process improvement is not able to meet the performance requirements of the development of modern aviation and aerospace aircraft, must be through the high-temperature protective coatings that are deposited on the surface of the alloy alloy coating, that is, in the alloy coating surface and then apply oxide ceramic coatings to solve the problem. Usually the coating is thin, mainly to protect the base metal from high temperature corrosion. The requirements for high temperature strength are mainly borne by the base alloy itself. Since the base alloy and protective coatings can be designed separately, so the application of protective coatings can be applied to the alloy components to maintain the alloy sufficient high-temperature strength and the surface of the excellent high-temperature corrosion resistance.
There are three general types of high-temperature coatings: Diffusion coatings that modify the outer layer of the substrate by contacting the substrate and reacting with defined elements within it are called diffusion coatings. Typical representative of this type of coating is the thermal diffusion of aluminum infiltration on nickel-based and diamond-based alloys to obtain NiAl,CoAl coatings, respectively. Overlay coatings are deposited on the surface of the substrate containing protective metal elements as overlay coatings. The use of a variety of physical or chemical deposition means in the alloy surface directly prepared a protective film, this film is the overlay coating. Thermal Barrier CoatingsThe thermal barrier coating is a coating system consisting of a ceramic insulating top layer and a metal bonding base layer. The purpose of using a metal bonding base layer for the thermal barrier coating is to improve the physical compatibility between the ceramic top layer and the base alloy as well as to protect the substrate against oxidation. The role of the thermal barrier coating mainly lies in: (1) in the cooling device creep performance degradation at the same time, reduce the temperature of the metal, to extend its service life; (2) greatly reduce the fatigue strain, to extend its service life; (3) to reduce the volume of air required for engine blade cooling, thereby improving its effectiveness and extending its service life.

Room termperature curing polysilazane, pls check IOTA 9150, IOTA 9150A. 
High termperature curing polysilazane, pls check IOTA 9108, IOTA 9118.