Nitridation of Ti-B-AI-AI2O3Composite Powder

Özdemir; F. Çinar Şahin; O. Yücel

doi:10.1515/HTMP.2001.20.5-6.429

Nitridation of Ti-B-AI-AI₂O₃Composite Powder

Department of Metallurgical and Materials Engineering

Istanbul Technical University

Research output: Contribution to journal › Article › peer-review

Abstract

The preparation of Ti-Al-B-N composite ceramic powders from Ti-Al-B composites by nitridation under an ammonia atmosphere has been studied. For obtaining the effects of process parameters such as time and temperature on nitride formation, Ti-Al-B composite powder prepared by thermite ignition was used as a starting material in this work. The reaction products were examined via X-ray diffraction (XRD) and microanalysis using an energy dispersive system attached to a scanning electron microscope (SEM). The X-ray and SEM observations indicate that the nitride formation is confirmed at temperature above 1273 K within 2 hours under a NH₃gas flow rate of 33 1/h. Although TiN-AlN-BN composite powders were obtained at 1723 K in 6 hours under a NH₃gas flow rate of 33 1/h, a small amount of intermetallic compound such as AIB₂and TiB₂also remains in the product.

Original language	English
Pages (from-to)	429-435
Number of pages	7
Journal	High Temperature Materials and Processes
Volume	20
Issue number	5-6
DOIs	https://doi.org/10.1515/HTMP.2001.20.5-6.429
Publication status	Published - 2001

Funding

The authors are grateful to I.T.U. Research Foundation for its financial support to conduct this research. They thank H. Sesigur, Sise Cam A.§., Dept. of Glass Research, Istanbul, Turkey for X-ray diffraction studies, O.L. Ovecoglu, and V. Gunay for valuable discussions.

Funders
I.T.U. Research Foundation

Keywords

AlN
BN
Ti-Al-B-N composite ceramic powders
TiB
TiN
nitridation

Access to Document

10.1515/HTMP.2001.20.5-6.429

Cite this

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title = "Nitridation of Ti-B-AI-AI2O3Composite Powder",

abstract = "The preparation of Ti-Al-B-N composite ceramic powders from Ti-Al-B composites by nitridation under an ammonia atmosphere has been studied. For obtaining the effects of process parameters such as time and temperature on nitride formation, Ti-Al-B composite powder prepared by thermite ignition was used as a starting material in this work. The reaction products were examined via X-ray diffraction (XRD) and microanalysis using an energy dispersive system attached to a scanning electron microscope (SEM). The X-ray and SEM observations indicate that the nitride formation is confirmed at temperature above 1273 K within 2 hours under a NH3gas flow rate of 33 1/h. Although TiN-AlN-BN composite powders were obtained at 1723 K in 6 hours under a NH3gas flow rate of 33 1/h, a small amount of intermetallic compound such as AIB2and TiB2also remains in the product.",

keywords = "AlN, BN, Ti-Al-B-N composite ceramic powders, TiB, TiN, nitridation",

author = "{\"O}zdemir and \{{\c C}inar {\c S}ahin\}, F. and O. Y{\"u}cel",

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AU - Çinar Şahin, F.

AU - Yücel, O.

PY - 2001

Y1 - 2001

N2 - The preparation of Ti-Al-B-N composite ceramic powders from Ti-Al-B composites by nitridation under an ammonia atmosphere has been studied. For obtaining the effects of process parameters such as time and temperature on nitride formation, Ti-Al-B composite powder prepared by thermite ignition was used as a starting material in this work. The reaction products were examined via X-ray diffraction (XRD) and microanalysis using an energy dispersive system attached to a scanning electron microscope (SEM). The X-ray and SEM observations indicate that the nitride formation is confirmed at temperature above 1273 K within 2 hours under a NH3gas flow rate of 33 1/h. Although TiN-AlN-BN composite powders were obtained at 1723 K in 6 hours under a NH3gas flow rate of 33 1/h, a small amount of intermetallic compound such as AIB2and TiB2also remains in the product.

AB - The preparation of Ti-Al-B-N composite ceramic powders from Ti-Al-B composites by nitridation under an ammonia atmosphere has been studied. For obtaining the effects of process parameters such as time and temperature on nitride formation, Ti-Al-B composite powder prepared by thermite ignition was used as a starting material in this work. The reaction products were examined via X-ray diffraction (XRD) and microanalysis using an energy dispersive system attached to a scanning electron microscope (SEM). The X-ray and SEM observations indicate that the nitride formation is confirmed at temperature above 1273 K within 2 hours under a NH3gas flow rate of 33 1/h. Although TiN-AlN-BN composite powders were obtained at 1723 K in 6 hours under a NH3gas flow rate of 33 1/h, a small amount of intermetallic compound such as AIB2and TiB2also remains in the product.

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KW - BN

KW - Ti-Al-B-N composite ceramic powders

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KW - TiN

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