Hot isostatically pressed Si sub 3 N sub 4 -Si sub 3 N sub 4 joints bonded with oxynitride glass

Journal Article · Tue Mar 01 04:00:00 EST 1988 · Advanced Ceramic Materials; (USA)

DOI:https://doi.org/10.1111/j.1551-2916.1988.tb00190.x· OSTI ID:6074047

Coon, D N; Tallman, R L; Neilson, Jr, R M ^[1]

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1. Idaho National Engineering Lab., Idaho Falls (USA)

Oxynitride glasses in the system Y-Al-Si-O-N were used to join sintered and hot-pressed Si{sub 3}N{sub 4} from 1,550{degree} to 1,725{degree}C in a hot isostatic press. The short-bar, chevron-notch method was used to measure the fracture toughness of the joined Si{sub 3}N{sub 4} at room temperature. Joined sintered Si{sub 3}N{sub 4} exhibited high fracture toughness values (4.1 to 5.0 MPa{center dot}m{sup 1/2}) and the joining process was dominated by chemical interactions between the ceramic and bonding glass. Joining of hot-pressed Si{sub 3}N{sub 4} was dominated by flow of glass across the Si{sub 3}N{sub 4} surfaces, and low fracture toughness values ranging from <1.0 to 5.5 MPa{center dot}m{sup 1/2} were observed.

• OSTI ID: 6074047
• Journal Information: Advanced Ceramic Materials; (USA), Journal Name: Advanced Ceramic Materials; (USA) Vol. 3:2; ISSN 0883-5551; ISSN ACEME
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360201* -- Ceramics
Cermets
&amp; Refractories-- Preparation &amp; Fabrication
BONDING
DATA
EXPERIMENTAL DATA
FABRICATION
FRACTURE PROPERTIES
GLASS
HOT PRESSING
INFORMATION
JOINING
JOINTS
MATERIALS WORKING
MEASURING METHODS
MECHANICAL PROPERTIES
NITRIDES
NITROGEN COMPOUNDS
NUMERICAL DATA
PNICTIDES
PRESSING
SILICON COMPOUNDS
SILICON NITRIDES