High Temperature Oxidation and Corrosion Behavior of 316L Stainless Steel Prepared by Selected Laser Melting Process

doi:10.11902/1005.4537.2025.286

Journal of Chinese Society for Corrosion and protection

2026, Vol. 46

Issue (1): 137-144 DOI: 10.11902/1005.4537.2025.286

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High Temperature Oxidation and Corrosion Behavior of 316L Stainless Steel Prepared by Selected Laser Melting Process

FENG Haoxuan¹^,², WANG Fuli¹^,³, LI Jialin¹, DU Yao¹(

), WEI Boxin¹, ZHU Shenglong¹

^1.Department of Surface Engineering Materials Research, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China
^2.School of Materials Science and Engineering, University of Science and Technology of China, Shenyang 110016, China
^3.School of Materials Science and Engineering, Northeastern University, Shenyang 110819, China

Cite this article:

FENG Haoxuan, WANG Fuli, LI Jialin, DU Yao, WEI Boxin, ZHU Shenglong. High Temperature Oxidation and Corrosion Behavior of 316L Stainless Steel Prepared by Selected Laser Melting Process. Journal of Chinese Society for Corrosion and protection, 2026, 46(1): 137-144.

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Abstract

The oxidation behavior in air and corrosion behavior beneath NaCl salt deposit film of selective laser melting prepared 316 stainless steel (SLM-316) and traditional cast 316 stainless steel (Cast-316) at 700 ^oC was comparatively studied. The results showed that the SLM-316 stainless steel exhibited superior high-temperature oxidation and corrosion resistance. After 200 h of oxidation, its weight gain was only 0.047 mg/cm², and the formed oxide scale was uniform and compact, with a thickness of less than 1 μm; whereas the oxide scale of the Cast-316 stainless steel showed obvious zoning, with local thickness exceeding 10 μm and the corresponding weight gain reaching 0.083 mg/cm². In the high-temperature corrosion environment with deposited solid NaCl, the two steels are suffered from corrosion but their corrosion degrees are different: SLM-316 stainless steel showed only a slight weight gain of 0.23 mg/cm², while the Cast-316 stainless steel suffered severe corrosion accompanied by spallation of the corrosion products, resulting in a mass loss of -2.4 mg/cm². The formed corrosion products of the two steels are composed mainly of Fe₂O₃ and NiCr₂O₄. It is proposed that the ultra-fine sub-grain structure introduced by the SLM process may promote the rapid formation of the Cr₂O₃ protective scale, significantly enhancing the high-temperature oxidation resistance and salt corrosion resistance of the 316 stainless steel.

Key words: high temperature salt corrosion high temperature oxidation selective laser melting 316 stainless steel

Received: 09 September 2025 32134.14.1005.4537.2025.286

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	FENG Haoxuan
	WANG Fuli
	LI Jialin
	DU Yao
	WEI Boxin
	ZHU Shenglong

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https://www.jcscp.org/EN/10.11902/1005.4537.2025.286 OR https://www.jcscp.org/EN/Y2026/V46/I1/137

Fig.1 XRD patterns (a, b) and microstructures of as-prepared Cast-316 (c) and SLM-316 (d, e) stainless steels

Fig.2 Mass gain (a, b) and oxidation rate constants (c) of Cast-316 and SLM-316 stainless steels at 700 ^oC

Fig.3 XRD patterns of Cast-316 (a) and SLM-316 (b) stainless steels after oxidation for 200 h at 700 ^oC

Fig.4 Surface and cross-sectional morphologies of Cast-316 (a-c) and SLM-316 (d-f) stainless steels after oxidation for 200 h at 700 ^oC

Fig.5 Elements mapping results of Cast-316 stainless steel after oxidation for 200 h at 700 ^oC

Fig.6 Corrosion kinetic curves of Cast-316 and SLM-316 stainless steel at 700 ^oC with solid NaCl deposited

Fig.7 XRD patterns of Cast-316 and SLM-316 stainless steels after corrosion for 200 h at 700 ^oC with solid NaCl deposited

Fig.8 Surface morphologies of Cast-316 (a, b) and SLM-316 (c, d) stainless steels after corrosion for 200 h at 700 ^oC with solid NaCl deposited

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