STUDY ON HIGH TEMPERATURE PERFORMANCES OF MCrAlX   COATINGS DEPOSITED BY MULTI  ARC ION PLATING

Acta Metallurgica Sinica (English Letters) ›› 1999, Vol. 12 ›› Issue (5): 1019-1024.

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STUDY ON HIGH TEMPERATURE PERFORMANCES OF MCrAlX COATINGS DEPOSITED BY MULTI ARC ION PLATING

J. Zhang, J.B. Li, Q.Heng and X.H.Zhang Shenyang University,Shenyang 110044,China L.Q.Qi LiMing Aeroengine Manufacfruing Corperation, Shenyang 110043,China

Received:1999-10-25 Revised:1999-10-25 Online:1999-10-25 Published:2009-10-10

Abstract

Abstract: NCoCrAlSiYHf and CoNiCrAlTaY coatings which belong to protective Al 2O 3 scale forming type were deposited by multi arc ion plating technique . The effect of deposition process parameters on qualities of the coatings was discussed. The high temperature oxidation performances isothermal oxidation with 950℃ / 500h and 1100℃ / 100h were studied. And also, the hot corrosion performances at 700℃ and 800℃, with molten mixed salt composed of 75%wt Na 2SO 4 and 25%wt NaCl were investigated. Then the high temperature protection decaying mechanisms were proposed.

Key words: multi arc ion plating, superalloy coating, isothermal oxidation, hotcorrosion

J. Zhang, J.B. Li, Q.Heng and X.H.Zhang Shenyang University,Shenyang 110044,China L.Q.Qi LiMing Aeroengine Manufacfruing Corperation, Shenyang 110043,China. STUDY ON HIGH TEMPERATURE PERFORMANCES OF MCrAlX COATINGS DEPOSITED BY MULTI ARC ION PLATING[J]. Acta Metallurgica Sinica (English Letters), 1999, 12(5): 1019-1024.

STUDY ON HIGH TEMPERATURE PERFORMANCES OF MCrAlX COATINGS DEPOSITED BY MULTI ARC ION PLATING

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