自催化沉积非晶态复合材料的组成与晶化特性研究

STUDY ON THE COMPOSITION AND CRYSTALLIZING CHARACTERISTIC OF AMORPHOUS COMPOSITE FABRICATED BY SELF CATALYZING DEPOSITION 

用自催化沉积非晶态（Ｎｉ，Ｃｕ）１００－ｘＰｘ＋ＳｉＣ复合材料，研究了复合材料的组成与晶化特性，结果表明，当ｘ＞１４或者ＳｉＣ体积分数小于１２８％时，复合材料即保持非晶态；时效温度达到６０３—６１８Ｋ，复合材料逐渐向晶态过渡，晶化相为ｆｃｃＮｉ和ＮｉｙＰｚ，稳定组织为（Ｎｉ，Ｃｕ）Ｐ＋Ｎｉ３Ｐ＋ＳｉＣ．较非晶态复合材料，晶态材料具有更高的力学性能．

Abstract The amorphous (Ni,Cu) 100-x P x +SiC composites were fabricated by self catalyzing deposition, and the composition and crystallization characteristics were studied. The results showed that the composites kept at amorphous state when x was more than 14 or the fraction of SiC less than 12.8%; they would transform gradually into crystalline with the increase of aging temperature at 603—618K; and the crystallized phases were fcc Ni and Ni y P z respectively; (Ni,Cu)P+Ni 3P+SiC was formed as a stable microstructure. Compared with amorphous composites, crystalline materials exhibited higher machanical properties.