Influence of AlPO4 Crystalline Structure on Microstructure and Antioxidation Property of Multi-layer Coating
Source abstract
Abstract
采用包埋法和水热电泳沉积法相结合的组合工艺在 C/C复合材料表面制得SiC/AlPO 4 复合涂层.借助X射线衍射仪(XRD)和扫描电镜(SEM)对该复合涂层的晶相组成和显微结构进行了表征, 重点研究了AlPO 4 晶相结构对复合涂层显微结构及抗氧化性能的影响. 结果表明：AlPO 4 晶相结构对复合涂层的显微结构及抗氧化性能有较大的影响. 采用石英型磷酸铝(B-AlPO 4 )晶相粉体所制备的涂层比较疏松, 涂层自身的内聚力较差且涂层内部存在较多缺陷, 采用磷石英型磷酸铝(T-AlPO 4 )晶相粉体所制备的涂层的致密性和均匀性相比于B-AlPO 4 有很大的提高, 但是表面存在一些小孔且涂层与基体间存在裂纹, 采用方石英型磷酸铝(C-AlPO 4 )晶相粉体所制备的涂层最致密且无明显的裂纹, 与基体结合良好. C-AlPO 4 晶相粉体所制备的涂层具有较好的抗氧化性能, 涂层试样在1500℃的空气气氛下氧化21h后失重仅为0.41wt%.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Advanced ceramic materials synthesis · Advanced materials and composites · High-Temperature Coating Behaviors
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (6)
Show source-provided references
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