به وسيله فولاد مذاب AL2O3 , AIN-BN ، AIN مقايسه رفتار ترشوندگي

Wettability of AIN, AlN-BN and A1203 by molten steel

The wettability of AIN, AIN-BN and A1203 by molten steel has been studied using sessile drop method. All of the substrates presented non -wetting behaviour after one hour contact with the liquid alloy at 1550°C. The evaluation of liquid-vapour and solid-liquid tensions and the values of adhesion work showed that wetting is governed by chemical interactions at solid -liquid and liquid-vapour interfaces. Addition of BN to AIN substrate on one hand reduces its densification rate and on the other hand modifies its wettabilty by molten steel.