SGER- Development of Iota-Alumina Coatings

SGER-Iota-氧化铝涂层的开发

• 批准号: 0122539
• 负责人: Soumendra Basu
• 金额: $ 5万
• 依托单位: Trustees of Boston University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2001
• 资助国家: 美国
• 起止时间: 2001-10-01 至 2003-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0122539&HistoricalAwards=false
• 关键词: SGER; Development; Iota; Alumina; Coatings

0122539BasuAn SGER award supports a study of the feasibility of depositing compositionally graded coatings in the mullite-iota alumina system. The intent is to develop coatings which will provide high temperature oxidation and corrosion resistance to SiC and Si3N4 ceramics without spalling during thermal cycles. The intent is to CVD deposit a coating which is mullite (3Al2O3.2SiO2) at the interface with the ceramic substrate and to gradually change the composition to pure alumina of the iota-alumina phase, which has the same crystal structure as mullite. The coatings will be evaluated for crystal structure, thermal expansion properties, and high temperature oxidation resistance.***

0122539BasuAn SGER 奖支持一项在莫来石-iota 氧化铝系统中沉积成分梯度涂层的可行性研究。 目的是开发能够为 SiC 和 Si3N4 陶瓷提供高温氧化和耐腐蚀性的涂层，而不会在热循环过程中剥落。 其目的是在与陶瓷基材的界面处CVD沉积莫来石(3Al2O3.2SiO2)涂层，并逐渐将成分改变为iota-氧化铝相的纯氧化铝，其具有与莫来石相同的晶体结构。 将评估涂层的晶体结构、热膨胀性能和高温抗氧化性。***