发电锅炉材料与防护涂层的磨蚀机制与研究展望

张世宏, 胡凯, 刘侠, 杨阳

Corrosion-Erosion Mechanism and Research Prospect of Bare Materials and Protective Coatings for Power Generation Boiler

ZHANG Shihong, HU Kai, LIU Xia, YANG Yang

表5 不同合金涂层热腐蚀性能比较^{[105,114~123]}

Table 5 Comparison of hot corrosion rates for different alloy coatings^{[105,114-123]}

Coating	Substrate	Coating	Corrosion	Cycle	Molten salt	Hot corrosion rate
		preparation	temperature	time	composition	mg·cm^-2
		process	^oC	h	(mass fraction)	Coating	Substrate
Ni-21Cr	304 s.s.	HVOF	650	100	NaCl + Na₂SO₄ +	35.00	-
Ni-15Cr					KCl + K₂SO₄	48.00
Ni-11Cr						56.50
Ni-7Cr^[114]						65.50
FeCrAl^[115]	T92	HVOF	700	1000	37.5%Na₂SO₄ + 37.5%K₂SO₄ + 25%Fe₂O₃	70	-
			750			130
			800			170
FeCrNiMoSi^[116]	T91	PS	700	84	Na₂SO₄-30%K₂SO₄	8.0	-
Ti-50Al Al-30Cr^[117]	Superfer 800H	PS + Nitriding	900	50	Na₂SO₄-60%V₂O₅	8.5	24.5
Ti-50Al Al-30Cr^[117]						12.0
NiCrBSi^[118]	Inconel 600	HVOF	900	50	Na₂SO₄-60%V₂O₅	9.1	15.3
	Inconel 601					10.5	26
	Superfer 800H					9.2	46
Ni-Cr	T91	D-gun	900	100	Na₂SO₄-60%V₂O₅	66.3	73.0
Stellite-21^[119]						67.2
NiCrAlY	Superfer 800H	PS	900	50	Na₂SO₄-60%V₂O₅	5.4	51.6
Ni-20Cr						10.2
Stellite-6						32.4
Ni₃Al^[120]						16.2
Ni-50Cr^[121]	T22	Cold spray	900	50	Na₂SO₄-60%V₂O₅	48	218
	SA 516					29	245
Ni-30Cr	20G	Arc spray	750	100	Na₂SO₄-30%K₂SO₄	4.3	-
Ni-45Cr						3.2
Ni-50Cr^[122]						2.9
NiCr	Carbon steel	HVAF	600	168	KCl	11.32	-
NiAl^[123]						2.49
NiCrAl	Carbon steel	HVAF	600	168	KCl	1.49	-
NiCrMoSi^[105]						0.67