Densification of a Thick Disk Preform with Silicon Carbide Matrix by CVI Process
Densification of a Thick Disk Preform with Silicon Carbide Matrix by CVI Process
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采用 CVI 工艺对碳化硅基体厚盘预成型件进行致密化
DOI：
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发表时间：
2008
期刊：
影响因子：
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通讯作者：
B. Bustamante
中科院分区：
文献类型：
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作者：
T. Huynh;C. V. Burkland;B. Bustamante
采用化学气相渗透（CVI）工艺制造陶瓷基复合材料（CMC）叶片转子。演示文章是基于一个一次性涡轮机发动机的非冷却设计。采用CVI工艺对二维极性机织Nicalon纤维厚盘预制体进行致密化处理。将复合材料盘致密化至理论密度的90 +/-2%（约2.94g/cm 3）。根据设计配置，将致密化的复合材料盘超声加工成净形状。机加工操作包括叶片的常规表面磨削和计算机超声加工。CMC转子的评估包括NDE、微观结构分析、微机械材料建模、有限元圆盘分析和冷旋试验。参考文献2。
A chemical vapor infiltration (CVI) process was used to fabricate a ceramic matrix composite (CMC) bladed rotor. The demonstration article was based on an uncooled design for an expendable turbine engine. A thick-disk preform of 2-D polar woven Nicalon fiber was densified with silicon carbide matrix by CVI process. The composite disk was densified to 90 +/- 2 percent of the theoretical density (about 2.94 g/cu cm). The densified composite disk was ultrasonically machined into net shape per design configuration. The machining operation included conventional surface grinding and computerized ultrasonic machining of the blades. The evaluation of the CMC rotor included NDE, microstructural analysis, micromechanical material modeling, finite element disk analysis, and a cold spin test. 2 refs.