热喷涂工艺是最近发展起来的一种表面强化技术。它具有一系列优点:如覆盖层薄而均匀,对基体金属的适应性强,合金覆盖层耐磨、耐腐蚀、抗氧化等。热喷涂对提高产品质量和设备利用率,减少配件的生产和储备以及节省能源等方面具有较佳的经济价值。但是,热喷涂材料中含有较多的B、Si元素,还加入了10～17％的Cr,在高碳条件下,生长成不少硼化物和碳化物,所以,硬度很高、塑性很差、脆性很大,很难进行切削加工。与一般 Thermal spraying process is a recently developed surface hardening technology. It has a series of advantages: such as covering thin and uniform, adaptability to the base metal, alloy coating wear resistance, corrosion resistance, oxidation resistance and so on. Thermal spraying has better economic value in improving product quality and equipment utilization, reducing the production and storage of accessories and saving energy. However, the thermal spraying material contains more B, Si elements, also added 10 ~ 17% Cr, under high carbon conditions, grow into a lot of borides and carbides, so the hardness is high, the plasticity is poor , Brittle, it is difficult to carry out cutting. And general