利用少量贵重金属、合金或陶瓷材料在零部件表面形成一层高硬度、耐磨、耐腐蚀层，既能满足零件的强度韧性要求，又能满足其硬度要求，很多情况下可代替镀硬铬或由于镀硬铬。
陶瓷喷涂喷涂是一种表面改性技术，是表面工程技术的重要组成部分，它是利用某种热源（如燃气、电能），将粉末状或丝状的金属或非金属材料加热到熔融或半熔融状态，然后借助焰留本身或压缩气体以一定速度喷射到预处理过的基体表面，沉积而形成具有各种功能的表面涂层的一种工艺。（图/文www.cddnvga.cn）
中译英：
By using a small amount of precious metals, alloys or ceramics in parts surface to form a high hardness, wear resistance, corrosion resistant layer, which can not only meet the parts strength toughness requirements, and can meet the requirements of its hardness, many cases can replace the hard chromium plating or as a result of hard chromium plating.

Ceramic spray coating is a kind of surface modification technique, it is the use of a heat source ( such as a gas, electricity), powder or filamentary metal or nonmetal material is heated to a molten or semi-molten state, and then uses the flame retention itself or a compressed gas to a certain speed jet to the pretreatment of the surface of the substrate, deposition formed with various features of the surface coating of a process.