【摘要】 研究运用ＸＤＴＭ法制备金属基复合材料工艺，成功地制备了Ａｌ２Ｏ３（Ｐ）／Ａｌ复合材料。试验证明，粒径１０～１５μｍ的ＳｉＯ２粉末与Ａｌ粉制成的坯体，在６００℃保温３ｈ时反应能全面进行，但直至保温４ｈ时反应仍不彻底；当保温时间延长至６ｈ后，生成的Ａｌ２Ｏ３粒子中Ｓｉ含量极小，反应彻底完成。反应生成的Ｓｉ富集在Ａｌ２Ｏ３粒子周围的基体中，以细小、球形的结晶体形式析出。生成的Ａｌ２Ｏ３粒子与基体的界面结合良好。同时对反应机理和反应对基体的影响也作了初步的探讨更多还原

【Abstract】 The XD TM technology for metallic composites is researched, and the Al 2O 3(p)/Al composites have been successfully formed. The experiments show that the compound consisting of Al powders and SiO 2 powders whose diameter is about 10～15μm,at 600℃ for 3h, can wholly cause reaction, but not to be completed when the reaction has been done for 4h. The formed Al 2O 3 particles include few Si atoms and the reaction has been fully completed at 600℃ for 6h. The matrixs round Al 2O 3 particles rich in Si atoms in the form of slight and spheroical crystal. The interface between Al 2O 3 particles and Al matrix is good. In the meantime, the mechanism of reaction and the influence of reaction on matrix have been also primarily studied.更多还原