Paper Title:
Reaction Synthesized Boron Nitride-Containing Composites (BNCC)
  Abstract

Based on the proposed inorganic reactions a series of high performance hexagonal boron nitride-containing composites (BNCC), include SiC-BN, Si3N4-SiC-BN, SiAlON-BN, AlN-BN, Al2O3-BN, AlON-BN and mullite-BN, have been prepared via reactive hot pressing or pressureless reactive sintering. Various boron-bearing components such as B, B4C, AlB2, SiB4, SiB6, B2O3 or H3BO3, 9Al2O3×2B2O3 (9A2B) and 2Al2O3×B2O3 (2AB) are used as the boron source. On the other hand, nitrogen gas or solid state nitirgen-bearing metal nitrides such as Si3N4 and AlN can be used as the nitrogen source. The in situ synthesized composites demonstrated homogeneous and isotropical microstructures with very fine (nano-sized) BN platelets or their agglomerates distributed in the matrixes. These composites showed high strength, low elasticity and improved strain tolerance. In this article the reaction design, thermodynamics, reaction mechanisms, reactive hot pressing or pressureless reactive sintering, microstructures and mechanical properties will be discussed.

  Info
Periodical
Key Engineering Materials (Volumes 280-283)
Edited by
Wei Pan, Jianghong Gong, Chang-Chun Ge and Jing-Feng Li
Pages
1385-1390
DOI
10.4028/www.scientific.net/KEM.280-283.1385
Citation
G. J. Zhang, T. Ohji, S. Kanzaki, "Reaction Synthesized Boron Nitride-Containing Composites (BNCC)", Key Engineering Materials, Vols. 280-283, pp. 1385-1390, 2005
Online since
February 2007
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Sedigheh Salehi, Omer Vander Biest, Jef Vleugels
Abstract:1.75 mol % Y2O3-stabilized ZrO2-based composites with 35-95 vol % TiN were fully densified by hot pressing for 1 hour at 1550°C under a load...
135
Authors: Jing Kun Guo, Hua Min Kou, Yu Bai Pan
Abstract:The main problems for multiphase materials are the even mixing and the bonding or reacting among two or more phases, as well as the states...
233
Authors: Tao Jiang, Hai Yun Jin, Zhi Hao Jin, Jian Feng Yang, Guan Jun Qiao
Abstract:The machinable B4C/BN ceramics composites were fabricated by hot-pressing sintering process at 1850oC for 1h under the pressure of 30MPa....
53
Authors: Hai Yun Jin, Hui Cheng Shi, Bo He, Nai Kui Gao, Zeng Ren Peng
Abstract:AlN filled epoxy composites were fabricated. The microstructure of composites was observed by SEM. The thermal conductivity was also...
460
Authors: Dong Chen, Zhe Chen, Peng Zhang, Yi Jie Zhang, Haiheng Ma, Hao Wei Wang
Chapter 5: Metal Alloy Materials
Abstract:In-situ TiB2 particles reinforced AA7055 composites were fabricated through mixed-salts route and their bending properties were...
1005