SiCとアルミニウムの間の濡れ性に及ぼすVaおよびVIa族元素の影響
1985 年 35 巻 12 号 p. 663-669
詳細
1985 年 35 巻 12 号 p. 663-669
The wettability of molten aluminum alloys containing 5% of V, Nb and Ta in Va group and Cr, Mo and W in VIa group to SiC was measured by the dipping method. Wetting of SiC in all the alloys occurs after a certain period. The period is shortened by alloying all elements of Va and VIa groups. These elements without Cr accelerate the wetting rate. EPMA analysis shows formation of (V2C+V) and TaC at the boundary in the alloys containing V and Ta respectively. The reaction rate is expressed by the equation proportional to the number of nuclei for wetting per unit interfacial area and unwetted ratio of the interface (1-α). Activation energy for wetting approximately 330kJ/mol is obtained through temperature dependence of wetting of Al-V alloy.
