تأثير النيكل على كل من الطلاء ألا لوميني و مقاومة التأكسد الدوري للصلب السبائكي AISI 321

الملخص EN

Two different types of aluminide coatings on oustenitic stainless steel 321 AISI.

were investigated.

One is based on prcdeposition of nickel by electrodeposition followed by aluminization using a pack cementation technique (double step-coating), while the other coating is based on codcposition of nickel and aluminium powder simultansly using a pack cementation ( single step-coating).

The coating microstructure and intermetallic compound of the coating layers, as well as.

coating thickness were identified using metallugraphy and X-ray analysis.

The coating microstructure and intermetallic compound of the coating layers, as well as.

coating thickness were identified using metallugraphy and X-ray analysis.

The cyclic oxidation test of the coatings at elevated temperature reveals the formation of stable and protective scale a-AI2O3 along the exposure time.