استخدام أوكسيد اليتيريوم (Y2O3)‎ كحاجز انتشاري لعملية الطلاء بالألمنيوم لسبيكة الكوبلت Fsx 414

الملخص EN

The research includes the preparation of aluminum coatings by method of pack- cementation on the surface of the alloy of the cobalt (Fsx 414) which doping with a thin layer of oxide yttrium.

These coatings have been exposed to rotating oxidation process at a high temperatures to determine the range of resistance and to identify its behavior and studying the structures of these coatings by method of microscopic test.

The results refer to that these coatings have good resistance for oxidation at high temperature 1000° C, and this may explain the role which barrier oxide played as a Y2O3 by it behaving as (Thermal Barrier) ones and as (Diffusion Barrier) another time.