Low temperature synthesis of bulk Boron Nitride Nanoplatelets with and without metallic binder. Issue 14 (15th July 2021)

• Record Type: Journal Article
• Authors: Reyes, Andrew; Nieto, Andy
• Is Part Of: Ceramics international. Volume 47:Issue 14(2021)
• Page Start: 19694
• Page End: 19699
• Publication Date: 2021-07-15
• Subjects: Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2021.03.307
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: Boron Nitride Nanoplatelets (BNNP) are consolidated into a bulk form using a low energy processing route that consisted of cryogenic milling, cold isostatic pressing, and a short, mild heat treatment. X-ray diffraction analysis was performed to confirm the presence of the secondary metallic constituent and the different phases of Boron Nitride (BN). Unique features of BNNP such as platelet stacking and kinking are retained. A secondary metallic constituent is also included to improve processability and to enhance structural support in the bulk structure. Mechanical properties were evaluated using microhardness testing and nanoindentation. Relative density, elastic modulus, and hardness increased with the incorporation of Al binder contents of as low as 10 vol %. A high degree of load transfer efficiency is demonstrated in higher metallic binder content composites (50 vol % Al) by comparing theoretical and experimentally measured microhardness values. This study presents a novel template for manufacturing bulk 2D nanomaterials using simple and low energy processing.