Hot-corrosion resistance of a sputtered K38G nanocrystalline coating in molten sulfate at 900°C

被引：39

作者：

Geng, S ^{[1
]}

Wang, F ^{[1
]}

Zhu, S ^{[1
]}

Wu, W ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Met Res, State Key Lab Corros & Protect, Shenyang 110016, Peoples R China

来源：

OXIDATION OF METALS | 2002年 / 57卷 / 5-6期

基金：

中国国家自然科学基金;

关键词：

K38G alloy; sputtering; coating; molten sulfate; corrosion;

D O I：

10.1023/A:1015356522798

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

The hot-corrosion behavior of a nanocrystalline coating of K38G alloy, prepared by magnetron sputtering and cast K38G in molten 75 wt.% Na2SO4+25 wt.% K2SO4 at 900degreesC was studied. The coating eliminated internal sulfidation during the early stage of corrosion as a result of the formation of a continuous and compact Al2O3 scale. The nanocrystallization of K38G alloy prolonged the incubation of breakaway corrosion and improved the corrosion resistance of K38G. The relevant corrosion mechanism is discussed.

引用

页码：549 / 557

页数：9

共 8 条

[1] MECHANISMS FOR HOT CORROSION OF NICKEL-BASE ALLOYS [J].

GOEBEL, JA ;

PETTIT, FS ;

GOWARD, GW .

METALLURGICAL TRANSACTIONS, 1973, 4 (01) :261-278

[2]

JANECKE E, 1908, Z PHYS CHEM, V64, P346

[3]

LOU HY, 1992, OXID MET, V38, P299, DOI 10.1007/BF00666917

[4]

WANG F, 1990, CHINESE J MET SCI TE, V6, P61

[5] Effect of nanocrystallization on the corrosion resistance of K38G superalloy in CO+CO2 atmospheres [J].

Wang, FH ;

Young, DJ .

OXIDATION OF METALS, 1997, 48 (5-6) :497-509

[6] The effect of nanocrystallization on the selective oxidation and adhesion of Al2O3 scales [J].

Wang, FH .

OXIDATION OF METALS, 1997, 48 (3-4) :215-224

[7]

WANG MC, 1986, J CHIN SOC CORR PROT, V6, P65

[8]

ZHANG Y, 1989, J CHINESE SOC CORROS, V9, P121

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