Surface repair of porous and damaged alumina bodies using carboxylate-alumoxane nanoparticles

摘要: Aqueous solutions of acetate-functionalized alumina nanoparticles (A-alumoxane), with an average particle size 28 nm, have been used as precursors for the surface infiltration and repair porous and/or damaged surfaces. SEM AFM measurements indicate that treatment a 1 wt% solution results in reduction roughness from >0.6 μm to ≈100 nm pores 100 range. The use 6 gives better 50 features, but cracking is observed. hardness substrate increased upon infiltration. No spallation layer observed after indentation grain dislodgment overcome.