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Nanoscale Structural and Mechanical Characterization of Heat Treated Nacre
Materials Science and Engingeering: C
  • Zaiwang Huang, University of South Carolina
  • Xiaodong Li, University of South Carolina - Columbia
Publication Date
8-1-2009
Document Type
Article
Abstract

Nanoscale structural and mechanical characterization of heat treated nacre has been carried out. Two phase transformations were identified, i.e., from aragonite to calcite in the 500 °C heat treated nacre and from aragonite to calcium oxide (CaO) in the 1000 °C heat treated nacre. The brick-mortar architecture remains in the 500 °C heat treated nacre, but loses in the 1000 °C heat treated nacre. The heat treatment burned out the biopolymer in nacre. Nanoscale holes were discovered at the aragonite platelet boundaries and on the platelet surfaces. The heat treated nacre exhibits a sharp loss in elastic modulus and hardness compared with the fresh nacre.

Citation Information
Zaiwang Huang and Xiaodong Li. "Nanoscale Structural and Mechanical Characterization of Heat Treated Nacre" Materials Science and Engingeering: C Vol. 29 Iss. 6 (2009) p. 1803 - 1807
Available at: http://works.bepress.com/xiaodong_li/99/