“…Local chemical corrosion at the crack tip may increase the crack growth rate by several orders of magnitudes, resulting in a significant reduction in lifetime (Barinov, Ivanov, Orlov, & Shevchenko, 1998;Chevalier, Olagnon, & Fantozzi, 1999;Freiman et al, 2009;Lawson, 1995;Lughi & Sergo, 2010;Salmang & Scholze, 2007;Schneider et al, 2008). Corrosive attack in suspensions combined with abrasive wear may result in a significant increase in the corrosion rate (Fang, Sidky, & Hocking, 1997;Presser, Berthold, Wirth, & Nickel, 2008;Kitaoka, Toshidhide, Toshio, Yamaguchi, & Kashiwagi, 1992Presser, Nickel, Krummhauer, & Kailer, 2009). Table 3 gives an overview of the corrosion behavior of different ceramics under various conditions and Figure 12 gives the strengths of various ceramic materials in different media.…”