碳(石墨)/铝复合材料制备工艺及力学性能的研究  

Studies on Fabrication Technology and MechanicalProperties of C(Gr)/AI Composites

作　　者：张帆[1,2] 李小璀[1,2] 王松 

机构地区：[1]上海交通大学金属基复合材料国家重点实验室 [2]上海大学材料研究所

出　　处：《热加工工艺》1999年第2期5-7,共3页Hot Working Technology

摘　　要：研究了碳（石墨）纤维增强铝基复合材料（Ｃ（Ｇｒ）／Ａ１）制备工艺及其对力学性能的影响。研究表明，在冷却速度较慢的条件下纤维表面涂软Ｃ层对提高Ｃ／Ａｌ性能意义不大，纤维束中混杂ＳｉＣ颗粒可使力学性能有一定提高。在相同工艺制备条件下，Ｇｒ／Ａｌ的强度显著高于Ｃ／Ａｌ，原因在于Ｇｒ纤维稳定性较高。Ｃ／Ａｌ复合材料制备的关键是控制脆性化合物Ａｌ４Ｃ３的形成。Fabrication techniques of C(Gr)/AI composites by vacuum pressure infiltration (VPI) and their effecton mechanical properties have been researched in this work. The results showed that under the condition of slow cool-ing ,carbon fiber could pot be protected by surface CVD C-coating. Hybridizing SiCr into carbon fiber could more or lessimprove the strength of the C/AI composites. The the Gr/AI composites showed much higher strength than that of C/AIcomposites because the chemical compatibility of Gr fiber with AI was beetter than that of carbon fiber. The key problemin fabricating of the C/Al composites is to control the formation of brittle compound AI.C,.[

关 键 词：复合材料 力学性能 制备工艺 铝基 碳 石墨 

分 类 号：TB333[一般工业技术—材料科学与工程]