316L不锈钢焊接接头在含S-H2S环境中的腐蚀行为

316L不锈钢焊接接头在含S-H₂S环境中的腐蚀行为

李科, 李天雷, 曹晓燕, 姜流, 王雅熙, 肖泽渝, 钟显康

Corrosion Behavior of 316L Stainless Steel Welded Joints in S-H₂S-containing Environments

LI Ke, LI Tianlei, CAO Xiaoyan, JIANG Liu, WANG Yaxi, XIAO Zeyu, ZHONG Xiankang

表3 腐蚀产物的XPS表征结果

Table 3 XPS characterization results of the corrosion products

Experimental conditions	Spectra	Corrosion product	Peak area / %	Experimental conditions	Spectra	Corrosion product	Peak area / %
Welded seam 90 ^oC	Fe 2p	FeS	45.72	Welded seam 120 ^oC	Fe 2p	FeS	17.86
pH = 3.5		Fe₂O₃	36.31	pH = 3.5		Fe₂O₃	25.18
1 MPa H₂S		FeS₂	17.95	0.1 MPa H₂S		FeS₂	56.91
Cl^- = 1000 mg/L	Cr 2p	Cr(OH)₃	100.00	Cl^- = 1000 mg/L	Cr 2p	Cr(OH)₃	100.00
	S 2p	Sulfate	15.56		S 2p	Sulfate
		S₈	46.93			S₈	88.71
		FeS	16.46			FeS
		FeS₂	21.05			FeS₂	11.29
Base material 90 ^oC	Fe 2p	FeS	31.03	Base material 120 ^oC	Fe 2p	FeS	24.30
pH = 3.5		Fe₂O₃	28.86	pH = 3.5		Fe₂O₃	34.49
1 MPa H₂S		FeS₂	40.11	0.1 MPa H₂S		FeS₂	41.21
Cl^- = 1000mg/L	Cr 2p	Cr(OH)₃	100.00	Cl^- = 1000 mg/L	Cr 2p	Cr(OH)₃	100.00
	S 2p	Sulfate	12.88		S 2p	Sulfate	3.05
		S₈	55.52			S₈	79.24
		FeS	4.94			FeS
		FeS₂	26.66			FeS₂	17.71
Heat affected zone 90 ^oC	Fe 2p	FeS	24.30	Heat affected zone 120 ^oC	Fe 2p	FeS	62.74
pH = 3.5		Fe₂O₃	24.64	pH = 3.5		Fe₂O₃	14.98
1 MPa H₂S		FeS₂	51.05	0.1 MPa H₂S		FeS₂	20.36
Cl^- = 1000 mg/L	Cr 2p	Cr(OH)₃	100.00	Cl^- = 1000 mg/L	Cr 2p	Cr(OH)₃	100.00
	S 2p	Sulfate	11.77		S 2p	Sulfate	1.55
		S₈	40.86			S₈	61.58
		FeS	28.31			FeS	5.90
		FeS₂	19.06			FeS₂	30.97