Effect of SiC addition on the thermal diffusivity of SiAlON ceramics

被引:12
作者
Akin, Seniz Reyhan Kushan [1 ,2 ]
Turan, Servet [1 ]
Gencoglu, Pervin [1 ,3 ]
Mandal, Hasan [1 ,4 ]
机构
[1] Anadolu Univ, Dept Mat Sci & Engn, Eskisehir, Turkey
[2] Cankaya Univ, Dept Mat Sci & Engn, Ankara, Turkey
[3] Ceram Res Ctr, Eskisehir, Turkey
[4] Sabanci Univ, Istanbul, Turkey
关键词
SiAlON; Thermal diffusivity; Silicon carbide; Composite; EARTH-OXIDE ADDITIVES; HEAT-TREATMENT; WEAR BEHAVIOR; COMPOSITES; CONDUCTIVITY; NANOCOMPOSITES; NANOPARTICLES; PERFORMANCE;
D O I
10.1016/j.ceramint.2017.07.051
中图分类号
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
Despite the fact that thermal conductivity is a crucial parameter for SiAlON ceramics with respect to their suitability in various applications, including high-temperature structural components, wear parts, and cutting tools, studies on SiAlON ceramics reported thus far mainly focus on the improvement of their mechanical properties. In view of the lack of sufficient studies on the thermal conductivity of SiAlON ceramics, this study investigates the improvement in the thermal diffusivity behaviour of SiAlON ceramics by the addition of highly conductive SiC particles. As solid-solution SiAlON ceramics exhibit complex crystal structures typically composed of defects, the phonon scattering increases, subsequently decreasing diffusivity. In particular, the improvement in the thermal diffusivity of both alpha- and beta-SiAlONs was investigated by the addition of 0.25 wt% SiC. In addition, the effect of the SiC particle size on the thermal diffusivity of beta-SiAlON was examined. Using inverse diffusivity data, intrinsic and extrinsic scattering parameters were determined, and compared to intrinsic scattering, extrinsic scattering was a dominant factor. Furthermore, transmission electron microscopy (TEM) images of SiCp-reinforced a and -beta-SiAlON ceramics were recorded to examine the SiC particle distribution.
引用
收藏
页码:13469 / 13474
页数:6
相关论文
共 20 条
[11]   Hard sialon ceramics reinforced with SiC nanoparticles [J].
Liu, Q ;
Gao, L ;
Yan, DS ;
Thompson, DP .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1999, 269 (1-2) :1-7
[12]   Rare-earth element doped Si3N4/SiC micro/nano-composites-RT and HT mechanical properties [J].
Lojanova, S. ;
Tatarko, P. ;
Chlup, Z. ;
Hnatko, M. ;
Dusza, J. ;
Lences, Z. ;
Sajgalik, P. .
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 2010, 30 (09) :1931-1944
[13]   REVERSIBLE-ALPHA REVERSIBLE-ARROW BETA-SIALON TRANSFORMATION IN HEAT-TREATED SIALON CERAMICS [J].
MANDAL, H ;
THOMPSON, DP ;
EKSTROM, T .
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 1993, 12 (06) :421-429
[14]   THERMAL-CONDUCTIVITY OF ALPHA-SIALON CERAMICS [J].
MITOMO, M ;
HIROSAKI, N ;
MITSUHASHI, T .
JOURNAL OF MATERIALS SCIENCE LETTERS, 1984, 3 (10) :915-916
[15]  
Niihara K., 1991, J CERAM SOC JPN, V99, P971
[16]   EFFECT OF SIZE AND MORPHOLOGY OF PARTICULATE SIC DISPERSIONS ON FRACTURE-BEHAVIOR OF SI3N4 WITHOUT SINTERING AIDS [J].
PEZZOTTI, G ;
NISHIDA, T .
JOURNAL OF MATERIALS SCIENCE, 1994, 29 (07) :1765-1772
[17]   α-SiAlON-SiC composites obtained by gas-pressure sintering and hot-pressing [J].
Santos, C. ;
Kelly, C. A. ;
Ribeiro, S. ;
Strecker, K. ;
Souza, J. V. C. ;
Silva, O. M. M. .
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY, 2007, 189 (1-3) :138-142
[18]   Development of α-SiAlON-SiC ceramic composites by liquid phase sintering [J].
Souza, J. V. C. ;
Santos, C. ;
Kelly, C. A. ;
Silva, O. M. M. .
INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS, 2007, 25 (01) :77-81
[19]   Influence of rare-earth oxide additives and SiC nanoparticles on the wear behaviour of Si3N4-based composites at temperatures up to 900 °C [J].
Tatarko, P. ;
Kasiarova, M. ;
Chlup, Z. ;
Dusza, J. ;
Sajgalik, P. ;
Vavra, I. .
WEAR, 2013, 300 (1-2) :155-162
[20]   Influence of rare-earth oxide additives on the oxidation resistance of Si3N4-SiC nanocomposites [J].
Tatarko, Peter ;
Kasiarova, Monika ;
Dusza, Jan ;
Sajgalik, Pavol .
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 2013, 33 (12) :2259-2268