チタン酸カリウムウィスカー強化アルミニウム合金(AC4C)複合材料の製造と二,三の性質

抄録

The modified potassium titanate whisker being stabler at higher temperature was developed recently. This whisker was only composed of K₂O· 6TiO₂ which free from other chemical constitutions and, was used to make the preform with addition of small amount of inorganic binder. This preform was infiltrated aluminum alloy(AC4C) by squeeze casting, and the dimentional change of the composite was very small. Therefore, the K₂O· 6TiO₂ whisker reinforced aluminum alloy composite with lower volume fraction of the whisker could be fabricated without large deformation and distortion. Some properties of the composites were investigated. Tensile and hardness tests, measurment of elastic modulus, damping capacity, thermal expansion and thermal analysis were carried out. In particular, it was found that this whisker began to react with aluminum over about 1 123 K.