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Reaction bonded silicon nitride prepared from wet attrition-milled silicon. [fractography
TLDR
In this article, the same authors reported that fracture initiation appeared to be associated with subsurface flaws in high-strength specimens and both sub-surface and surface flaws in low-strength ones.Abstract:
Silicon powder wet milled in heptane was dried, compacted into test bar shape, helium-sintered, and then reaction bonded in nitrogen-4 vol% hydrogen. As-nitrided bend strengths averaged approximately 290 MPa at both room temperature and 1400 C. Fracture initiation appeared to be associated with subsurface flaws in high-strength specimens and both subsurface and surface flaws in low-strength specimens.read more
Citations
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Book ChapterDOI
Mechanical properties of SiC fiber-reinforced reaction-bonded Si3N4 composites
TL;DR: In this article, the room temperature mechanical and physical properties of silicon carbide fiber reinforced reaction-bonded silicon nitride composites (SiC/RBSN) have been evaluated.
Progress in materials and structures at Lewis Research Center
TL;DR: In this article, the development of power and propulsion system technology is discussed. Specific emphasis is placed on the following: high temperature materials; composite materials; advanced design and life prediction; and nondestructive evaluation.
Effect of milling and leaching on the structure of sintered silicon
TL;DR: In this paper, the structure of the milled and leached powder compacts appears favorable for the production of reaction bonded silicon nitride, and the average particle size was reduced to below 0.5 micrometer and enhanced densification.
References
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Book ChapterDOI
Mechanical properties of SiC fiber-reinforced reaction-bonded Si3N4 composites
TL;DR: In this article, the room temperature mechanical and physical properties of silicon carbide fiber reinforced reaction-bonded silicon nitride composites (SiC/RBSN) have been evaluated.
Progress in materials and structures at Lewis Research Center
TL;DR: In this article, the development of power and propulsion system technology is discussed. Specific emphasis is placed on the following: high temperature materials; composite materials; advanced design and life prediction; and nondestructive evaluation.
Effect of milling and leaching on the structure of sintered silicon
TL;DR: In this paper, the structure of the milled and leached powder compacts appears favorable for the production of reaction bonded silicon nitride, and the average particle size was reduced to below 0.5 micrometer and enhanced densification.