激光熔化沉积制备<strong>316L</strong>不锈钢的电化学腐蚀及空化腐蚀性能

激光熔化沉积制备316L不锈钢的电化学腐蚀及空化腐蚀性能

蒋华臻, 彭爽, 胡琦芸, 王光义, 陈启生, 李正阳, 孙辉磊, 房佳汇钰

Corrosion and Cavitation Erosion Resistance of 316L Stainless Steels Produced by Laser Metal Deposition

JIANG Huazhen, PENG Shuang, HU Qiyun, WANG Guangyi, CHEN Qisheng, LI Zhengyang, SUN Huilei, FANG Jiahuiyu

表3 LMD-316L和锻造316L不锈钢在3.5%NaCl溶液中的电化学参数

Table 3 Electrochemical parameters of LMD-316L SS and wrought 316L SS in 3.5%NaCl solution (These parameters are obtained from its corresponding potentiodynamic polarization curves)

Sample No.	R_p / (Ω·cm^-2)	b_a	b_c	i_corr / (A·cm^-2)
1	3100745.5	334.56	153.52	1.475 × 10^-8
2	87315.4	1335.11	126.57	5.757 × 10^-7
3	119891.4	415.8	181.55	4.583 × 10^-7
4	75209.7	2475.24	134.93	7.398 × 10^-7
5	62532.5	593.47	90.93	5.483 × 10^-7
6	66780.6	976.56	135.33	7.739 × 10^-7
Wrought 316L	31502.4	23809.52	167.42	2.294 × 10^-6