Comparison of properties of sintered and sintered reaction-bonded silicon nitride fabricated by microwave and conventional heating
- Oak Ridge National Lab., TN (United States)
- St. Gobain/Norton Industrial Ceramics, Northboro, MA (United States)
A comparison of microwave and conventional processing of silicon nitride-based ceramics was performed to identify any differences between the two, such as improved fabrication parameters or increased mechanical properties. Two areas of thermal processing were examined: (1) sintered silicon nitride (SSN) and (2) sintered reaction-bonded silicon nitride (SRBSN). The SSN powder compacts showed improved densification and enhanced grain growth. SRBSN materials were fabricated in the microwave with a one-step process using cost-effective raw materials. The SRBSN materials had properties appropriate for structural applications. Observed increases in fracture toughness for the microwave processed SRBSN materials were attributable to enhanced elongated grain growth.
- Research Organization:
- Oak Ridge National Lab., TN (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC05-84OR21400
- OSTI ID:
- 10189047
- Report Number(s):
- CONF-940411-54; ON: DE95001426; CRN: C/ORNL--90-0036
- Resource Relation:
- Conference: Spring meeting of the Materials Research Society (MRS),San Francisco, CA (United States),4-8 Apr 1994; Other Information: PBD: [1994]
- Country of Publication:
- United States
- Language:
- English
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