Porous Metal Laminate is utilized in the manufacture of a combustion chamber for a gas turbine engine. The laminate has passages, which connect with ambient atmosphere through holes. The arrangement creates local relatively thick portions or lands that cause stress concentrations along the passages and lines of holes. The pockets are machined in the rear face of each land so as to reduce the differences in thickness of the laminate and thereby ensure the more even distribution of stresses. An improved method for coating a porous metal laminated structure has airflow holes on the coated side of the structure.

Porous Powder Metal Media is a unique material that exhibits a wide range of definable flow and filtration properties. It can replace woven screen products, for a more rigid structure that will withstand higher pressure and allow back flushing without the need for additional internal support structures. The unique combination of a sintered powdered metal construction offered in a variety of corrosion-resistant materials. It is used as a direct replacement for brass and bronze powdered metal media, providing a stronger and more corrosion-resistant option.