纤维和颗粒增强陶瓷基复合材料是采用直接金属氧化工艺开发的。这种低成本制造工艺提供了净或近净形状加工的能力。尼卡龙纤维增强氧化铝复合材料在空气中1200摄氏度（220华氏度）的温度下，在外加应力下表现出长期稳定性（超过1000小时）。燃烧室部件已成功地在接近1500摄氏度（2730华氏度）的温度下进行了发动机测试。SIC颗粒增强氧化铝复合材料在1500摄氏度（2730华氏度）的空气中暴露5000小时，强度没有损失。 颗粒复合管在1400摄氏度（2550华氏度）的换热器中商业化使用。

FIBER AND PARTICULATE REINFORCED CERAMIC MATRIX COMPOSITES HAVE BEEN DEVELOPED USING THE DIRECTED METAL OXIDATION PROCESS. THIS LOW COST FABRICATION PROCESS OFFERS THE CAPABILITY OF NET OR NEAR NET SHAPE PROCESSING. NICALON FIBER REINFORCED ALUMINA COMPOSITES HAVE DEMONSTRATED LONG TERM STABILITY (GREATER THAN 1000H) UNDER APPLIED STRESS AT TEMPERATURES UP TO 1200 DEGREES C (220 DEGREES F) IN AIR. COMBUSTOR COMPONENTS HAVE BEEN SUCCESSFULLY ENGINE TESTED TO TEMPERATURES APPROACHING 1500 DEGREES C (2730 DEGREES F). SIC PARTICULATE REINFORCED ALUMINA COMPOSITES HAVE BEEN EXPOSED FOR 5000 H AT 1500 DEGREES C (2730 DEGREES F) IN AIR WITH NO LOSS IN STRENGTH. PARTICULATE COMPOSITE TUBES ARE BEING USED COMMERCIALLY IN HEAT EXCHANGERS OPERATING AT 1400 DEGREES C (2550 DEGREES F).