采用热压工艺制备了硅酸铝纤维/TCP生物功能梯度材料(FGM).采用X射线衍射分析、扫描电镜、EDAX线扫描能谱分析、密度分析及洛氏硬度分析对FGM进行了研究,结果表明:纤维含量分布呈轴向对称梯度变化.FGM整体完好,无破损或裂纹出现.FGM在宏观上呈现较模糊的梯度分布,微观上则表现出成分的连续变化.TCP基体与纤维结合紧密.FGM中TCP与硅酸铝纤维及热压模之间均未发生化学反应生成杂质化合物,HA至TCP的相变是因为羟基磷灰石的分解产生.随纤维含量增加,FGM各梯度层的断裂形式由脆性断裂逐渐转变为韧性断裂,且韧性程度随纤维含量增加而增强.各梯度层硬度和相对密度随纤维含量的增加而提高,且在纤维含量为60 vol%时达到最高,分别为92.7 MPa和86 .5%.
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