The invention discloses a method for controlling atmospheric
plasma spraying of an easily-oxidized
coating under the
atmosphere open environment. According to the method, in the
plasma spraying process,
powder can be effectively prevented from being oxidized, the purity and the property of the
coating are ensured, the oxidation-resisting property and the
ablation-resisting property of the
coating are improved, and the service life of the coating is prolonged. The method specifically comprises the points that before
plasma spraying is carried out, an air flow channel is arranged outside a plasma spraying gun
muzzle; the air flow channel is connected with a protection air
bottle, and therefore the aim that the protection
atmosphere environment is formed between the spraying gun opening and a base material can be achieved. Before the coating is sprayed, the protection air
bottle is opened in advance, the protection
atmosphere environment is formed, and then plasma spraying equipment is controlled to carry out spraying of the easily-oxidized coating. According to the method, manufacturing of a
silicide coating under the
atmospheric pressure open environment can be achieved, the process is easy to operate, parameters are easy to regulate and control, and the method is a high-efficiency low-cost coating manufacturing process.