The samples that were sealed in sodium silicate had a small porosity and good high temperature resistance property.
硅酸钠溶液封孔后的试样孔隙小，抗高温氧化效果好。
The results show that the pores of the coating surface are basically sealed, sealing agents and nano-particles can penetrate into the pores of the coating, thereby reduce the porosity of the coating.
结果表明，封孔涂层表面的孔隙基本被封住，封孔剂及其纳米颗粒可渗入涂层的孔隙中起到填充作用，从而降低涂层的孔隙率。
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