You are an engineer working for a manufacturer of land-based gas turbines. These turbines are similar to jet engines, but they are used on land to provide power for electricity generation and gas compression pipeline applications.
Suppose that you would like to apply a ceramic-based thermal barrier coating to the turbine blades in the first-stage turbine to increase the operating temperature and efficiency of the engine. 

(a) What difficulties might engineers experience in trying to design a ceramic coating that will be applied to a super alloy metal blade?
(b) What properties should be taken into consideration when choosing a suitable ceramic material for a coating? Be as thorough as possible.