To simulate and study hot corrosion in gas turbines various testing procedures have been developed. The first category of test corresponds to sample immersion in molten salt. These crucible tests were developed to allow fast ranking of the alloys. They have been almost totally abandoned in their original form, but they have led to more sophisticated testing methods involving electrochemical measurements. In the second category it is attempted to reproduce the conditions prevailing in burner rigs, i.e. continuous salt deposition on the testpieces. This is achieved using either sample contamination by spraying a Na2SO4 aqueous solution, followed by oxidation, or the modified Dean method (condensation of Na2S4 vapour produced in the hot zone of a gradient furnace).
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References
1.
CONDÉJ. F. G. and McCREATHC. G.: in Proc. Conf. on ‘Gas turbines’, New Orleans, La, Mar. 1980, The American Society of Mechanical Engineers, 80—GT-126.
2.
JosR. L.: in Proc. Conf. on ‘Metal—slag—gas reactions and processes’, Toronto, Ont., May 1975, The Electrochemical Society, 762.
3.
HURSTR. C., JOHNSONJ. B., DAVIESM., and HANCOCKP.: in ‘Deposition and corrosion in gas turbines’, (ed. HartA. B. and CutlerA. J. B., 143-157; 1973, London, Applied Science Publishers.
4.
FOGGOJ. G., NORDMAND. B., and JONESR. L.: J. Electrochem. Soc.,1984, 131, (3), 515–522.
5.
JONESR. L.: J. Electrochem. Soc.,1983, 130, (2), 273–279.
6.
NICHOLLA. R.: in ‘Coatings for high temperature applications’, (ed. LangE., 269-339; 1983, London, Applied Science Publishers.
7.
BORNSTEINN. S. and de CRESCENTEM. A.: in Proc. Conf. on ‘Metal—slag—gas reactions and processes’, Toronto, Ont., May 1975, The Electrochemical Society, 626-648.
8.
EwanP. and TAYLORT. J.: in ‘Materials and coatings to resist high temperature corrosion’, (ed. HolmesD. R. and RahmelA., 353-367; 1978, London, Applied Science Publishers.
9.
SMALLN., STRAWSONH., and LEWISA.: ‘Recent advances in the chemistry of fuel oil ash. The mechanism of corrosion by fuel impurities’, 1963, London, Butterworths.
10.
PATARINIV., BORNSTEINN. S., and de CRESCENTEM. A.: J. Eng. Power (Trans. ASME), 1979, 101, 177–185.
11.
BORNSTEINN. S., de CRESCENTEM. A., and ROTHH. A.: ‘Hot corrosion of vanadium pentoxide and sodium sulphate’, Report 73-19, Metals Ceramics Information Centre, 1973, 13-24.
12.
LuTHRAK. L. and SPACILH. S.: J. Electrochem. Soc., 1982, 129, (3), 649–656.
13.
RFSTALLJ. E.: Report no. R339, National Gas Turbine Establishment, 1975.
14.
McKEED. W. and ROMEOG.: Metall. Trans.,1973, 4, 1877–1885.
15.
McKEED. W. and ROMEOG.: Metall. Trans.,1974,5, 1127–1139.
16.
McKEED. W. and ROMEOG.: Metall. Trans.,1975, 6A, 101–108.
17.
STEINMETZP., ROQUESB., DUPREB., DURETC., and MORBIOLIR.: in Proc. Conf. on ‘High temperature protective coatings’, Atlanta, Ga, Mar. 1983, AIME/ASM, 135-159.
18.
SHORESD. A. and FANGW. C.: J. Electrochem. Soc.,1981, 128, (2), 346–349.
19.
GOEBELJ. A., PETTITF. S., and GOWARDG. W.: Metall. Trans.,1983, 4, 261–278.
20.
GIGGINSC. S. and PETTITF. S.: ‘Hot corrosion degradation of metals and alloys. A unified theory’, Report FR-11545, Pratt and Whitney Aircraft, Middletown, Conn., 1979.
21.
RAPS’R. A. and GOTOK. S.: in Proc. Symp. on ‘Fused salts’, Pittsburgh, Pa, Oct. 1978, The Electrochemical Society.
22.
SHORESD. A.: ‘High temperature corrosion’, (ed. RappR. A.), 493-501; 1983, San Diego, Ca, NACE.
23.
LUTHRAK. L.: Metall. Trans.,1982, 13A, 1843–1852.
24.
LurHaAK. L.: Metall. Trans.,1982, 13A, 1853–1864.
25.
BOOTHG. C. and CLARICER. L.: Mater. Sci. Technol., this issue, 272-281.
26.
Mater. Eng. Q., 1974, 4.
27.
SCHULTZJ. W. and HULSIZERw. R.: Mater. Eng. Q.,1976, Aug., 15-24.
28.
SIVAKUMARR.: Oxid. Met.,1982, 17, (1-2), 27–41.
29.
DUPREB., STEINMETZP., HAUSERJ. M., HENONJ. P., and MORBIOLIR.: ‘Etude de la corrosion a chaud de revetements protecteurs sur superalliages base nickel’, Final Report 9/1/1981 Technical Report SNECMA YORC No. 42134, COST 50, Round II, Project F6, 1981.
30.
GRUNLINGH. W. and BAUERR.: Thin Solid Films, 1982, 95, 3–20.
31.
ORYSHICHJ. V.: Zashch. Met.,1981, 17, (1), 74–79.
32.
BAUERR., SCHNEIDERK., and GRUNLINGH. W.: in Proc. Conf. on ‘Advance materials for alternative-fuel-capable directly fired heat engines’, Castine, Maine, July 1979, Department of Energy/Electric Power Research Institute, 505-521.
33.
NICOLLA. R., HILDEBRANDTU. W., and wAHLO.: Thin Solid Films, 1979, 64, 321–326.
34.
BAUERR., GRUNLINGH. W., and SCHNEIDERK.: ‘Materials and coatings to resist high temperature corrosion’, (ed. HolmesD. R. and RahmelA., 369-385; 1978, London, Applied Science Publishers.
CHUW. T., RAHMELA., and scHoitaM.: Interim report, COST 50, Project III D2, 1982.
37.
LEmoINEV.: Doctorat thesis, Université de Nancy, 1983.
38.
DUCATIU., COCCIAG. LECIS, CAVALLOTTIP., and BORILEF.: in Proc. Conf. on ‘High temperature problems in gas turbine engines’, Ankara, Turkey, Sept. 1977, Advisory Group for Aerospace and Research and Development, 21-12.
39.
SHORESD. A. and JOHNR. C.: J. Appl. Electrochem.,1980, 10, 2, 275.
40.
ERDOSE. and ALTORFERH.: Electrochim. Acta, 1975, 20, 937–944.
41.
CUTLERA. J. B. and GRANTc. J.: in ‘Deposition and corrosion in gas turbines’, (ed. CutlerA. J. B. and HartA. B.), 178–196; 1973, London, Applied Science Publishers.
42.
GRANTC. J.: Br. Corros. J.,1979, 14, (1), 26–32.
43.
CUTLERA. J. B., HARTA. B., FOUTAINM. J., and HOLLANDN. H.: in Proc. Conf. of Winter Annual Meeting and Energy Systems Exposition, Pittsburgh, Pa, Nov. 1967, American Society for Mechanical Engineers, 67 WA/CD4.
44.
CUTLERA. J. B.: J. Appl. Electrochem.,1971, 1, 19–26.
45.
CUTLERA. J. B. and GRANTC. J.: in Proc. Conf. 011 ‘Metal—slag—gas reactions and processes’, Totonto, Ont., May 1975, The Electrochemical Society, 591-607.
46.
BAUDOG., TAMBAA., and BOMBARAG.: Corrosion, 1970, 26,(7), 193–199.
47.
FERGUSONJ. M., GRANTC. J., CUTLERA. J. B., PRICED. D., and MEADOWCROFTD. B.: Materials for gas turbines programme, Final Report, COST 50, Round II UK 9, 1981.
48.
SHORESD. A.: Corrosion, 1975, 31, (12), 434–440.
49.
ERD6SE., ALTORFERH., and DENZLERE.: Werkstoffe Korrosion, 1982, 33, 373–385.
50.
STERNM. and GEARYA. L.: J. Electrochem. Soc.,1957, 104, 56.
51.
MAYW. A., ZETLMEISLM. J., BSHARAHL., and ANNANDR. R.: Ind. Eng. Chem., Prod. Res. Dev., 1972, 11, (4), 438–443.
52.
RAHMELA., SCHMIDTM., and SCHORRM.: Oxid, Met., 1982, 18, (3-4), 195–223.
53.
WUW. T., A. amudEL, and SCHORRM.: Oxid. Met.,1983, 19, (5-6), 201–229.
54.
T.W. and RAHMELA.: Werkstoffe Korrosion, 1984, 35, 135–149.
55.
BARKALOWR. H. and PETTITF. S.: ‘Marine gas turbine hot corrosion dependence on ingested salt levels’, Report AD 071 055, Pratt and Whitney Aircraft, Middletown, Conn., 1979.
56.
HOSSAINM. K. and SAUNDERSS. R. J.: in ‘High temperature alloys for gas turbines’, (ed. CoutsouradisD., 239-250; 1978, London, Applied Science Publishers.
57.
HWANGS. Y., MEIERG. H., PETTITF. S., JOHNSTONG. R., PROVENZANOV., and SCHMIDTF. A.: in Proc. Conf. on ‘High temperature protective coatings’, Atlanta, Ga, Mar. 1983, AIME/ASM, 121-135.
58.
DURETC., MORBIOLIR., and STEINMETZP.: Interim Report, COST 501, to be published.
59.
DEANA. V.: National Gas Turbine Establishment, Pyestock, Farnborough, Report, Jan. 1964.
60.
RICHARDSM. N. and STRINGERJ.: Br. Corros. J.,1973, 8, 167–172.
61.
JOHNSTOND. M., WHITTLED. P., and STRINGERJ.: Werkstoffe Korrosion, 1975, 26, 611–617.
FERGUSONJ. M., CUTLERA. J. B., GRANTC. J., and MEADOWCROFTD. B.: Materials for gas turbines programme, Interim Report no. 2, COST 50, June 1980.
64.
SVVINDELLSN., RAPERK., and STEWARTM.: High Temp. Technol.,1983, 1, (3), 139–145.
65.
SWINDELLSN., RAPERK., and MARUNISSENG.: High Temp. Technol.,1983, 1, (5), 251–258.
66.
GRIFFITHST. R., KINGK., and MORTIMERD.: High Temp. Technol.,1982, 1, (1), 43–50.
67.
GRIFFITHST. R., KINGK., and MORTIMERD.: Power Ind., Res., 1982, 2, 79–99.
68.
GRIFFITHST. R.: personal communication, University of Leeds.
69.
FARROWR. T., BENNERR. E., NAGELBERGA. S., and mArrEaxP. L.: Thin Solid Films, 1980, 73, 353–358.
70.
BENNERR. E. and NAGELBERGA. S.: Thin Solid Films, 1981, 84, 89.
71.
ASHARYA., MEIERG. H., and PETTITF. S.: in Proc. Conf. on ‘High temperature protective coatings’, Atlanta, Ga, Mar. 1983, AIME/ASM, 105-119.
72.
BRUCED. and HANCOCKP.: J. Inst. Met.,1969, 97, 140.
73.
ICELLERG., Y. swam, and GILDERH.: in ‘High temperature alloys for gas turbines’, (ed. CoutsouradisD., 269-275; 1978, London, Applied Science Publishers.
74.
DURETC., RENONJ. P., LEMOINEV., MORBIOLIR., and STEINMETZP.: Interim Report, COST 50, Round III, Project F5, 1982.
