Facility for Testing SiC Fiber Tows at Elevated Temperature in Silicic Acid-Saturated Steam

2017 ◽  
pp. 95-107 ◽  
Author(s):  
S. J. Robertson ◽  
K. B. Sprinkle ◽  
M. B. Ruggles-Wrenn
Keyword(s):  
Elevated Temperature ◽  
Silicic Acid ◽  
Saturated Steam ◽  
Sic Fiber

Testing Advanced SiC Fiber Tows at Elevated Temperature in Silicic Acid-Saturated Steam

2017 ◽  
Author(s):  
S. J. Robertson ◽  
K. B. Sprinkle ◽  
M. B. Ruggles-Wrenn
Keyword(s):  
Elevated Temperature ◽  
Silicic Acid ◽  
Elevated Temperatures ◽  
Ceramic Matrix Composites ◽  
Saturated Steam ◽  
Test Facility ◽  
Matrix Composites ◽  
Design Development ◽  
Oxidation Rates ◽  
Sic Fiber

Investigating stressed oxidation and scale crystallization kinetics of advanced SiC fibers at elevated temperature in steam is a challenging yet essential undertaking for the assessment of the effects of oxidation on mechanical properties of SiC-SiC ceramic matrix composites (CMCs). Moisture in the oxidizing environment is known to change oxidation rates, reduce scale viscosity and lower temperatures for scale crystallization. In order to study these phenomena, a facility for testing SiC fiber tows in creep at elevated temperatures in air, in steam and in steam saturated with silicic acid was developed. The newly constructed test facility was validated through creep testing of Hi-Nicalon™-S fibers at 800°C in steam saturated with silicic acid. Testing in saturated steam resulted in formation of a uniform oxide scale. Details of the test facility design, development and experimental validation are presented.

Static fatigue of Hi‐Nicalon™‐S fiber at elevated temperature in air, steam, and silicic acid‐saturated steam

2019 ◽  
Vol 103 (2) ◽  
pp. 1358-1371 ◽  
Author(s):  
Scott J. Robertson ◽  
Marina B. Ruggles‐Wrenn ◽  
Randall S. Hay ◽  
Theodore Shillig ◽  
Ronald Mitchell ◽  
...  
Keyword(s):  
Elevated Temperature ◽  
Silicic Acid ◽  
Saturated Steam ◽  
Static Fatigue

A study of the ultrasonic technique applied in fabrication of SiC fiber-reinforced aluminum composites

1995 ◽  
Vol 10 (3) ◽  
pp. 596-601 ◽  
Author(s):  
J. Pan ◽  
D.M. Yang ◽  
X.F. Yin ◽  
H. Fukunaga
Keyword(s):  
Shock Wave ◽  
High Pressure ◽  
Temperature Field ◽  
Elevated Temperature ◽  
Ultrasonic Vibration ◽  
Ultrasonic Technique ◽  
Aluminum Melt ◽  
Sic Fiber ◽  
Cavitation Effect ◽  
Transparent Liquid

By comparing the ultrasonic cavitation in several kinds of transparent liquid mediums, we have investigated the cavitation effect in liquid. It is considered that the shock wave created by the cavitation in aluminum melt induces a high pressure and an elevated temperature field around the fibers, which can promote the wetting between fiber and aluminum and have aluminum melt infiltrate into the fibers. Moreover, the experiment result shows that the fiber resonance matching with the cavitation is also an important factor for SiC/Al composites preparation. There exists a damage of the ultrasonic vibration on SiC fiber, if the fiber is acted long enough.

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