High Temperature Materials Potential and Perspectives for Oxide / Oxide Composites
High Temperature Materials Potential and Perspectives for Oxide / Oxide Composites
复制标题
氧化物/氧化物复合材料的高温材料潜力和前景
DOI：
--
复制
发表时间：
2012
期刊：
影响因子：
--
通讯作者：
A. Jankowiak
中科院分区：
文献类型：
--
作者：
M. Parlier;M. Ritti;A. Jankowiak
氧化物/氧化物复合材料面临的挑战是提供SiC/SiC复合材料的替代品，以降低制造成本并提高高温空气中的热稳定性。氧化物/氧化物复合材料由由相同性质的纤维增强的多孔氧化铝基体组成。在制备过程中获得可控的孔隙率有助于消散与加载过程中基体中裂纹扩展相关的能量。由此可见，复合材料具有损伤容忍度，而不需要像SiC/SiC复合材料那样在纤维上涂上碳涂层。使用亚微米氧化铝粉末和特殊添加剂来形成和控制烧结收缩，通过开发一种渗透到纤维增强材料中的方法获得了第一个复合材料。为了提高纤维体积分数，从而提高机械性能，选择了基于预浸料在纤维预成型中的悬浮塑料袋成型的工艺。概述了这些不同加工路线的发展与性能的演变。本文还介绍了基于微孔氧化物的热障涂层的发展，以期将其热结构势扩展到1200°C以上。
The challenge for oxide/oxide composites is to provide an alternative to SiC/SiC composites with the aim of decreasing the cost of manufacture and improving the thermal stability in air at high temperature. Oxide/oxide composites consist of a porous alumina matrix reinforced by fibers of the same nature. Obtaining a controlled rate of porosity in the preparation helps to dissipate the energy associated with the propagation of cracks in the matrix during loading. It follows that the composite is damage-tolerant without requiring a carbon coating on the fibers as in the case of SiC/SiC composites. Using submicron alumina powders and specific additives necessary for shaping and for control of the sintering shrinkage, the first composites were obtained by developing a method of infiltration into fibrous reinforcements. To increase the fiber volume fraction and thus the mechanical properties, processes based on the prepreg molding in a plastic bag of a suspension in a fiber preform were selected. The development of these various processing routes is outlined in relation with the evolution of properties. The development of thermal barrier coatings based on microporous oxide is also presented, in order to extend the thermostructural potential beyond 1200°C.
陶瓷纤维复合材料：机械性能的实验分析和建模
影响因子：
9.1
作者：
D. Koch;K. Tushtev;G. Grathwohl.
通讯作者：
G. Grathwohl.