Author/Authors :
Razdobarin، نويسنده , , A.G. and Mukhin، نويسنده , , E.E. and Semenov، نويسنده , , V.V. and Yu.Tolstyakov، نويسنده , , S. and Kochergin، نويسنده , , M.M. and Kurskiev، نويسنده , , G.S. and Podushnikova، نويسنده , , K.A. and Kirilenko، نويسنده , , D.A. and Sitnikova، نويسنده , , A.A. and Gorodetsky، نويسنده , , ?.?. and Bukhovets، نويسنده , , V.L. and Zalavutdinov، نويسنده , , R.Kh. and Zakharov، نويسنده ,
Abstract :
The structure and surface morphology of aluminum and silver mirrors covered with protective dielectric oxide layer were studied by means of TEM and SEM. The presence of needle-like pores throughout the thickness of the ZrO2 film and bubble-like pores in Al2O3 was observed. The test for resistivity to deuterium ion bombardment shows that the exposition to a fluence of ∼2×1020 ions/cm2 with the ion energy of 40–50 eV results in appearance of blisters on the surface of mirrors covered with Al2O3. For the mirrors protected with ZrO2 no noticeable changes in surface morphology and reflectivity were found even after order of magnitude higher ion fluence. The effect of different porous structures on blistering phenomena is discussed.
Keywords :
Oxide films , Deuterium ions , Blistering , ITER , Metallic mirrors
