Fig. 3From: Oxidation behavior of AlN/CrN multilayered hard coatingsSTEM-BF cross section views of the coating annealed for 60 min at 900 °C. TEM lamellas were prepared from different regions of the same sample containing a low (a) and high (b) number density of GB (compare Region 1 and 2 in Fig. 2). Regions with a high number of GBs are subject to pronounced oxidationBack to article page