ISO/TR 26946:2011描述了通过金相检验表征热喷涂涂层孔隙率的方法。 该方法特别适用于通过等离子喷涂产生的氧化物涂层，如Al2O3、ZrO2和TiO2。它还考虑了测试热喷涂涂层孔的尺寸、形状和密度的目的。

ISO/TR 26946:2011 describes a method for characterizing the porosity of thermally sprayed coatings by metallographical examination. This method is particularly applicable to oxide coatings, such as Al₂O₃, ZrO₂ and TiO₂, produced by plasma spray. It also considers the purposes to test the size, shape and density of pores for thermally sprayed coatings.