Fabrication and Properties of Metal-Coated SiTiCO Fiber-Reinforced Ti Matrix Composite

金属涂层SiTiCO纤维增强钛基复合材料的制备及性能

• 批准号: 11555174
• 负责人: KAGAWA Yutaka
• 金额: $ 8.83万
• 依托单位: University of Tokyo
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 1999
• 资助国家: 日本
• 起止时间: 1999 至 2000
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-11555174/
• 关键词: Composites; Metal coating; SiC fiber; Ti matrix; Interface; Reaction behavior; Mechanical properties; Fabrication; 表面改質とコーティング; SiC繊維強化Ti複合材料; 金属間化合物; 界面制御; 真空ホットプレス; 繊維強化金属; SiTiCO繊維; SiTiCO繊維強化Ti複合材料; 真空ホットプレス法

The effect of the metal coatings on the tensile strength of the unidirectional SiTiCO fiber-reinforced commercially pure Ti matrix composites in an actual fabrication process was examined. Au coated SiTiCO fiber was incorporated into commercially pure Ti matrix by vacuum hot processing route. The thickness of Au coating was from 0.5 to 1.0 μm and coating was done on the surface of thin (0.1 μm) carbon-coated SiTiCO fiber by continuous electro-deposition process. The interface reaction (diffusion) behavior between coated fiber and Ti matrix after fabrication was examined and the tensile strength of the extracted fiber from Ti matrix was obtained.It was found that Au coating effectively prevents reaction between SiTiCO fiber and Ti matrix by formation of intermetallic compound Au_xTi_y. This Au_xTi_y layer acts as a diffusion barrier between Ti and SiTiCO fiber. The tensile strength of the extracted fiber was only 10% lower than that of as received one. The interfacial mechanical properties were controlled by thin carbon coating layer and SiTiCO fiber surface. Effects of the thermal exposure on the interface properties was negligibly small. The formed Au_xTi_y also improves Young's modulus of the composite. The studies clearly demonstrated some advantages of the Au coating for SiTiCO fiber-reinforced Ti matrix composites.

研究了在实际制备过程中金属涂层对单向SiTiCO纤维增强纯钛基复合材料拉伸强度的影响。采用真空热处理工艺将Au涂层SiTiCO纤维引入工业纯钛基体中。Au涂层厚度为0.5 ~ 1.0 μm，采用连续电沉积法在薄（0.1 μm）碳包SiTiCO纤维表面进行了Au涂层。研究了涂层纤维制备后与钛基体之间的界面反应（扩散）行为，并测定了纤维的拉伸强度，发现Au涂层通过形成金属间化合物Au xTi y有效地阻止了SiTiCO纤维与钛基体之间的反应。该Au_xTi_y层作为Ti和SiTiCO纤维之间的扩散阻挡层。提取的纤维的拉伸强度仅比接收的纤维的拉伸强度低10%。界面力学性能受薄碳涂层和SiTiCO纤维表面控制。热暴露对界面性质的影响小到可以忽略不计。形成的Au_xTi_y也提高了复合材料的杨氏模量。研究清楚地表明了Au涂层的SiTiCO纤维增强钛基复合材料的一些优点。

项目成果

K.Sato, H.Kakisawa, Y.Kagawa, H.Kaya, O.Funayama, T.Isoda: "Reaction Between Newly-Developed Si_3N_4 Fiber and Various Ceramics"Journal of Materials Science Letters. 19. 1179-1183 (2000)

K.Sato、H.Kakisawa、Y.Kakawa、H.Kaya、O.Funayama、T.Isoda：“新开发的 Si_3N_4 纤维与各种陶瓷之间的反应”材料科学快报杂志。

S.Q. Guo, Y. Kagawa, A. Fukushima and C. Fujiwara: "Effect of Cu/Ta Duplex Metal Coating on Interface Characterization in SiC Fiber-Reinforced Ti-15wt% V-3wt% Cr-3wt% Al-3wt% Sn Matrix Composite"Philosophical Magazine A. 80(2). 389-409 (2000)

S.Q.%20Guo、%20Y.%20香川、%20A.%20福岛%20和%20C.%20藤原:%20"效果%20of%20Cu/Ta%20Duplex%20Metal%20Coating%20on%20Interface%20Characterization%20in%20SiC%

S.Q.Guo, Y.Kagawa, A.Fukushima, C.Fujiwara: "Tensile Properties of Duplex Metal-Coated SiC Fiber and Titanium Alloy Matrix Composites"Metallurgical and Materials Transactions. 30A(11). 3019-3024 (1999)

S.Q.Guo、Y.Kakawa、A.Fukushima、C.Fujiwara：“双相金属涂层碳化硅纤维和钛合金基复合材料的拉伸性能”冶金与材料学报。

S. Kawazoe, Y. Kagawa, N. Takemura, and H. Kakisawa: "Thermal Stress Distribution in Short Fiber-Reinforced Polymer Matrix Composite: Model Experiment and Simple Simulation"Journal of Materials Science Letters. 19. 2227-2229 (2000)

S. Kawazoe、Y. Kakawa、N. Takemura 和 H. Kakisawa：“短纤维增强聚合物基复合材料中的热应力分布：模型实验和简单模拟”材料科学快报杂志。

Y.Tanaka,Y.Kagawa,C.Masuda,Y.F.Liu and S.Q.Guo: "Observation of Fatigue Damage Process in SiC Fiber-Reinforced Ti-15-3 Composite at High Temperature"Metallurgical and Materials Transactions A. Vol.30A・No.1. 221-229 (1999)

Y.Tanaka、Y.Kakawa、C.Masuda、Y.F.Liu 和 S.Q.Guo：“高温下 SiC 纤维增强 Ti-15-3 复合材料疲劳损伤过程的观察”Metallurgical and Materials Transaction A. Vol.30A・No .1.221-229（1999）