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SiCN monofilament-reinforced Composite with novel multi-metal matrix on the basis of new cost-effective technologies for high-temperature applications - SiMet

基于适用于高温应用的新型经济高效技术的新型多金属基体 SiCN 单丝增强复合材料 - SiMet

基本信息

批准号：
191994244
负责人：
Dr. Günter Motz
金额：
--
依托单位：
Lehrstuhl für Keramische Werkstoffe
依托单位国家：
德国
项目类别：
Research Grants
财政年份：
2011
资助国家：
德国
起止时间：
2010-12-31 至 2016-12-31
项目状态：
已结题

来源：
https://gepris.dfg.de/gepris/projekt/191994244?language=en
关键词：
SiCN monofilament reinforced Composite novel

项目摘要

The intention of the renewal proposal SiCN monofilament-reinforced composite material with new multi-metal matrix based on new affordable technologies for high temperature applications (SiMet) is to continue the holistic approach for the development of a multi-metal matrix composite of the first proposal and to investigate still unsolved research issues. This concerns the preparation of thick SiCN fibres with improved mechanical properties, which requires the development of more flexible green fibers with less defects and a defined diameter but also to increase the pyrolysis temperature up to 1400 °C. According to the reviewer recommendation coating of the fibers is performed by the sub-contracted company TZO GmbH. The favoured coatings are well known for MMC applications (metallic and C-based coatings). The uncoated as well as the coated fibers will be characterized to investigate the influence of the coating on mechanical fiber properties but also to investigate the compatibility between the coating and the fiber as well as with the matrix. The matrix alloys have to adapt to the requirements of the whole system to improve the mechanical properties of the composite. This requires also the investigation of the interface between the primary matrix and the coated fibers. A pressure assisted infiltration process will be developed for a reduction of the pore content. To avoid parasitic brittle phases it is required to adjust the alloy composition of primary and secondary matrix. The composite based on new ceramic fibers and the developed matrix system will be investigated regarding mechanical properties, and finally evaluated with respect to the given requirements.

基于新的可负担的高温应用技术（SiMet）的具有新的多金属基体的SiCN单金属增强复合材料的更新提案的意图是继续第一提案的多金属基体复合材料的开发的整体方法，并调查仍然未解决的研究问题。这涉及制备具有改善的机械性能的厚SiCN纤维，这需要开发具有更少缺陷和限定直径的更柔性的绿色纤维，而且还需要将热解温度提高到1400 °C。根据审查员的建议，由分包公司TZO GmbH进行纤维涂层。对于MMC应用（金属和C基涂层），优选的涂层是众所周知的。将表征未涂覆的纤维以及涂覆的纤维，以研究涂层对机械纤维性能的影响，还研究涂层与纤维以及与基质之间的相容性。基体合金必须适应整个系统的要求，以提高复合材料的力学性能。这也需要研究主基体和涂层纤维之间的界面。将开发压力辅助渗透工艺以减少孔隙含量。为了避免寄生脆性相，需要调整一次和二次基体的合金成分。将研究基于新陶瓷纤维和开发的基质系统的复合材料的机械性能，并最终根据给定的要求进行评估。