Sintering of TiB2 ceramics

• Autorzy: Sulima I. , Figiel P. , Suśniak M. , Świątek M.
• Języki publikacji: EN

Abstrakty

EN

Purpose: Titanium diborides (TiB2) ceramic is particularly interesting because it exhibits high elastic modulus and hardness as well as high thermal conductivity. The interest in TiB2 ceramic increased enormously due to these properties but applications seem to be limited due to difficulties during densification process. In the experiment the TiB2 compacts was obtained using HP-HT method. The aim of this study is to work out and optimize the sintering densification process of TiB2 ceramics. Design/methodology/approach: The high temperature-high pressure (HT-HP) Bridgman type apparatus was used for densification method of TiB2 powder. Ceramics were sintered at pressure of 7.2 ± 0.2 GPa and temperature at 1500-2300*C ± 50*C. The duration of sintering was 60 seconds. In order to investigate the structure changes, the optical and scanning electron microscope was used. Mechanical properties were determined by Vickers hardness. Young modulus measurements were carried out using ultrasonic method. Findings: The TiB2 ceramics was obtained without using sintering agents. The properties and structure of TiB2 ceramics strongly depend on conditions of sintering process. The application of the temperature of 1500*C ± 50*C and pressure of 7.2 ± 0.2 GPa and time of 60 seconds permits to obtain the TiB2 ceramics without cracks. Practical implications: The TiB2 ceramic might be used for production of composites. From a practical position it is important to optimize the sintering densification of TiB2 ceramic. Originality/value: The TiB2 ceramics were formed using HP-HT technique without the use of additives. This method of sintering for TiB2 ceramics is original one.

Słowa kluczowe

EN

sintering; TiB2 ceramics; HT-HP technique

PL

spiekanie; technika HT-HP

• Wydawca: International OCSCO World Press
• Czasopismo: Archives of Materials Science and Engineering
• Rocznik: 2007
• Tom: Vol. 28, nr 11
• Strony: 687--690
• Opis fizyczny: Bibliogr. 18 poz., il., tab., wykr.

Twórcy

autor

Sulima I.

autor

Figiel P.

autor

Suśniak M.

autor

Świątek M.

• Institute of Technology, Pedagogical University, ul. Podchorążych 2, 30-084 Kraków, Poland,

Bibliografia

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