Details

Autor(en) / Beteiligte

• Shigegaki, Yasuhiro
• Brito, Manuel E.
• Hirao, Kiyoshi
• Toriyama, Motohiro
• Kanzaki, Shuzo

Titel

Strain Tolerant Porous Silicon Nitride

Ist Teil von

• Journal of the American Ceramic Society, 1997-02, Vol.80 (2), p.495-498

Ort / Verlag

Westerville, Ohio: American Ceramics Society

Erscheinungsjahr

1997

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• An approach to material strain tolerance, which basically makes it possible to lower the elastic modulus while retaining strength, was experimentally confirmed using as an example a porous silicon nitride composed of oriented anisotropic grains and pores. The porous structure consisting of tightly tangled rodlike grains and anisotropic pores was obtained by using β‐Si3N4 whiskers. This material exhibited a low Youngs modulus while retaining a relatively high fracture stress, even though it contained 14.4% porosity. Consequently, the strain to failure of silicon nitride was appreciably increased.