Chedru M, Vicens J, Chermant JL, Mordike BL
LERMAT, UPRESA CNRS 6004, ISMRA, 6 Boulevard Marechal Juin, 14050 Caen Cedex, France.
J Microsc. 1999 Nov;196(# (Pt 2)):103-12. doi: 10.1046/j.1365-2818.1999.00615.x.
Aluminium-matrix composites containing approximately 55 vol.% AlN particles were fabricated by melt infiltration of aluminium into an AlN preform under a pressure of up to 130 MPa. Two different AlN powders (H.C. Starck, Goslar, Germany, and ESK, Elektroschmelzwerk, Kempten, Germany) and four types of aluminium alloy (2024, 1070, 6060 and 5754) were used. The initial AlN powders were characterized by scanning electron microscopy. The composites were studied by light microscopy, scanning and transmission electron microscopies and energy-dispersive X-ray spectroscopy. Particle-matrix interfaces were observed using high-resolution electron microscopy. As a result of the melt infiltration process, the composites are very dense and the microstructure shows a homogeneous distribution of the reinforcement. The interfaces are clean with very little porosity. Some Al2Cu precipitates were observed in the 2024 matrix.
通过在高达130MPa的压力下将铝熔体渗入AlN预制件中，制备了含有约55体积% AlN颗粒的铝基复合材料。使用了两种不同的AlN粉末（德国戈斯拉尔的H.C. Starck公司和德国肯普滕的Elektroschmelzwerk公司的ESK）以及四种铝合金（2024、1070、6060和5754）。通过扫描电子显微镜对初始AlN粉末进行了表征。通过光学显微镜、扫描和透射电子显微镜以及能量色散X射线光谱对复合材料进行了研究。使用高分辨率电子显微镜观察颗粒-基体界面。由于熔体渗入过程，复合材料非常致密，微观结构显示增强相分布均匀。界面干净，孔隙率很小。在2024基体中观察到一些Al2Cu析出物。
