HfC- and TaC-based composite materials containing 15vol% MoSi2 as sintering aid were selected for their excellent combination of ceramic and metallic properties to produce simple shaped prototypes for ablation tests in a mixture of oxygen/butane/propane at temperatures between 1300°C and 1900°C. The ablation resistance of the HfC- and TaC-based models was compared to that of graphite models. SEM analysis of the sample surfaces and sections was conducted to analyze the material degradation. The composites have a superior ablation resistance compared to graphite, showing only slight surface oxidation and weight variation for temperatures above 1700°C.
Ablation tests on HfC- and TaC-based ceramics for aeropropulsive applications / Laura, Pienti; Diletta, Sciti; Laura, Silvestroni; Cecere, Anselmo; Savino, Raffaele. - In: JOURNAL OF THE EUROPEAN CERAMIC SOCIETY. - ISSN 0955-2219. - 35:5(2015), pp. 1401-1411. [10.1016/j.jeurceramsoc.2014.11.018]
Ablation tests on HfC- and TaC-based ceramics for aeropropulsive applications
CECERE, ANSELMO;SAVINO, RAFFAELE
2015
Abstract
HfC- and TaC-based composite materials containing 15vol% MoSi2 as sintering aid were selected for their excellent combination of ceramic and metallic properties to produce simple shaped prototypes for ablation tests in a mixture of oxygen/butane/propane at temperatures between 1300°C and 1900°C. The ablation resistance of the HfC- and TaC-based models was compared to that of graphite models. SEM analysis of the sample surfaces and sections was conducted to analyze the material degradation. The composites have a superior ablation resistance compared to graphite, showing only slight surface oxidation and weight variation for temperatures above 1700°C.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
