A core-shell ceramic particulate is provided. The core-shell ceramic particulate comprises a core particulate structure comprising a plurality of primary particulates and a plurality of primary pores; and a shell at least partially enclosing the core particulate structure. Each of the primary particulates...http://www.google.com.au/patents/US7670679?utm_source=gb-gplus-sharePatent US7670679 - Core-shell ceramic particulate and method of making
