Ablation tests on HfC- and TaC-based ceramics for aeropropulsive applications. Issue 5 (May 2015)

• Record Type: Journal Article
• Authors: Pienti, L.; Sciti, D.; Silvestroni, L.; Cecere, A.; Savino, R.
• Is Part Of: Journal of the European Ceramic Society. Volume 35:Issue 5(2015:May)
• Page Start: 1401
• Page End: 1411
• Publication Date: 2015-05
• Subjects: Hafnium carbide -- Tantalum carbide -- Hot corrosion -- Oxidation -- Microstructure; Ceramic materials -- Periodicals; Composite materials -- Periodicals; Matériaux céramiques -- Périodiques; Composites -- Périodiques; Ceramic materials; Composite materials; Periodicals; Electronic journals; 666.05
• DOI: 10.1016/j.jeurceramsoc.2014.11.018
• Languages: English
• ISSNs: 0955-2219

Abstract

Abstract: HfC- and TaC-based composite materials containing 15 vol% 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.