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Surface chemistry and hydrolysis of a hydrophobic-treated aluminium nitride powder
journal contributionposted on 22.01.2007, 17:18 by J.G.P. Binner, Yongheng Zhang
The surface chemistry of a hydrophobic-treated and an untreated AlN powder has been studied using XPS, FTIR and zeta potential measurements. Whilst the surface-treatment provided significant hydrophobic behaviour, experiments revealed that the powder could not completely resist hydrolysis without the additional use of 1 wt.% of an appropriate surfactant. The latter also improved the water-resistance of the untreated powder, though to a far lesser extent. The active hydrolysis protection mechanism for the treated powder is believed to be the creation of a molecular shell that was formed as a result of the surfactant adsorbing onto the hydrophobically treated surface.
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