variavel0=<b>Fábio Alexandre Souza Souza</b> - fabiosouza66@yahoo.com.br EMBRAER
<b>Fausto Macedo Bastos</b> - fmbastos@yahoo.com.br EMBRAER
<b>Paulo Renato Marques Jorge</b> - paulormj@yahoo.com.br EMBRAER
<b>Abstract.</b> This  study  shows  the  effects  of  new materials  for  gas  turbines  and  techniques  for  blade  coating.  The  implication  on  temperature limits of combustion chambers and consequently on high efficiency is also analyzed.
<b>Keywords.</b> turbine,, temperature, materials, super alloys, coatings.