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采用高能微弧合金化技术沉积TiCN冶金结合涂层,用于金属双极板的表面防护。沉积过程中的参数,如输出电压、功率、频率、气流量等对沉积层耐蚀性的影响较大。随着功率增加,TiCN涂层在304不锈钢基体上的沉积圈半径由小变大,且对应酸性溶液中腐蚀电流密度随功率的增大而减小;随频率的增加,单点脉冲放电能量是呈减小的趋势,且腐蚀电流密度随频率的增大而增大,这与沉积过程中的输出能量相关。
High-energy micro-arc alloying deposition of TiCN metallurgical bonding coating for the metal bipolar plate surface protection. Deposition process parameters, such as output voltage, power, frequency, gas flow on the corrosion resistance of the deposit a greater impact. With the increase of power, the radius of deposition circle of TiCN coating on 304 stainless steel base increases from small to small, and the corrosion current density in the corresponding acidic solution decreases with the increase of power. With the increase of frequency, the single-point pulse discharge energy is Shows a decreasing tendency, and the corrosion current density increases with the increase of frequency, which is related to the output energy in the deposition process.