| 摘要 |
A coating material in the form of a primary pellet is injected into a thermal-process beam with a carrier gas. The coating material is converted into a gaseous phase and deposited in form of a columnar coating layer (10) on a substrate (100). The primary pellet is a droplet containing chemical precursor of coating material in form of a salt solution. Droplet is converted into secondary pellet containing particles. The primary pellet or secondary pellet is split by mechanical and thermal interaction in beam. Particles are dispersed and coating material is evaporated. A coating material in the form of a primary pellet is injected into interior of a thermal-process beam with a carrier gas. The coating material is converted into a gaseous phase within process beam and is deposited as a condensate in the form of a columnar coating layer on a substrate. The primary pellet is a droplet or is formed as agglomerate, using bonding strength of a bonding medium or mutually held by adhesive force of particles. The droplet contains chemical precursor of coating material in the form of a salt solution. The droplet is converted into secondary pellet containing particles by thermal method in process beam. The primary pellet or secondary pellet is split by mechanical and thermal interaction within process beam. The particles are dispersed and coating material is completely or partially evaporated by thermal method on each particle. The primary pellet is obtained by spraying is slurry or salt solution containing liquid, binder and dispersing agent. The liquid is deionized water or organic solvent, preferably alcohol. The dispersing agent is polycarbonic acid, polycarboxylic acid compound or poly meta-carboxylic acid compound, polyethylene imine or amino alcohol. The binder is polyvinyl alcohol, polyvinyl pyrrolidone, polysaccharide, acryl polymer and its copolymer, starch, polyvinyl propylene, polyethyleneglycol or cellulose compound, carboxymethylcellulose methylcellulose, or hydroxyethyl cellulose. The coating material is ceramic oxide material containing oxide of zirconium, aluminum, titanium, chromium, calcium, magnesium, silicon, titanium, yttrium, lanthanum, cerium, scandium, praseodymium, dysprosium, gadolinium, samarium, manganese, or strontium. The coating material is zirconium oxide, yttrium oxide, ytterbium oxide, dysprosium oxide, gadolinium oxide, cerium oxide, magnesium oxide, calcium oxide, europium oxide, erbium oxide, scandium oxide, lanthanum oxide, and/or actinium oxide An independent claim is included for spray powder. |
