caa a22 4500 388019417 CHVBK 20180307124919.0 cr unu---uuuuu 161130e199812 xx s 000 0 eng 10.1557/JMR.1998.0474 doi S0884291400046884 pii (NATIONALLICENCE)cambridge-10.1557/JMR.1998.0474 Effect of sintering additive composition on the thermal conductivity of silicon nitride [Elektronische Daten] The thermal conductivity of silicon nitride prepared with varying sintering additive compositions was studied. Samples of Si3N4 + 0.5 mol% Y2O3 + 0.5 mol% Nd2O3 and a further additional agent were gas pressure sintered at 2173 K. MgO or Al2O3 was employed as the additional agent. While both agents improved sinterability, the former promoted grain growth and the latter suppressed it. Thermal conductivity increased with increasing MgO content, and a maximum value of 128 Wm-1 K-1 was attained when 2 mol% MgO was added. In contrast, addition of Al2O3 degrades thermal conductivity. This is probably due to the suppression of grain growth and the dissolution of Al2O3 into Si3N4 grains. Copyright © Materials Research Society 1998 Okamoto Y. Materials Research Laboratory, Nissan Motor Co., Ltd., 1, Natsushima-cho, Yokosuka-shi,Kanagawa 237-8523, Japan Hirosaki N. Materials Research Laboratory, Nissan Motor Co., Ltd., 1, Natsushima-cho, Yokosuka-shi,Kanagawa 237-8523, Japan Ando M. Materials Research Laboratory, Nissan Motor Co., Ltd., 1, Natsushima-cho, Yokosuka-shi,Kanagawa 237-8523, Japan Munakata F. Materials Research Laboratory, Nissan Motor Co., Ltd., 1, Natsushima-cho, Yokosuka-shi,Kanagawa 237-8523, Japan Akimune Y. Materials Research Laboratory, Nissan Motor Co., Ltd., 1, Natsushima-cho, Yokosuka-shi,Kanagawa 237-8523, Japan Journal of Materials Research Cambridge University Press 13/12(1998-12), 3473-3477 0884-2914 13:12<3473 1998 13 JMR https://doi.org/10.1557/JMR.1998.0474 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1557/JMR.1998.0474 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Okamoto Y. Materials Research Laboratory, Nissan Motor Co., Ltd., 1, Natsushima-cho, Yokosuka-shi,Kanagawa 237-8523, Japan NATIONALLICENCE 700 1- Hirosaki N. Materials Research Laboratory, Nissan Motor Co., Ltd., 1, Natsushima-cho, Yokosuka-shi,Kanagawa 237-8523, Japan NATIONALLICENCE 700 1- Ando M. Materials Research Laboratory, Nissan Motor Co., Ltd., 1, Natsushima-cho, Yokosuka-shi,Kanagawa 237-8523, Japan NATIONALLICENCE 700 1- Munakata F. Materials Research Laboratory, Nissan Motor Co., Ltd., 1, Natsushima-cho, Yokosuka-shi,Kanagawa 237-8523, Japan NATIONALLICENCE 700 1- Akimune Y. Materials Research Laboratory, Nissan Motor Co., Ltd., 1, Natsushima-cho, Yokosuka-shi,Kanagawa 237-8523, Japan NATIONALLICENCE 773 0- Journal of Materials Research Cambridge University Press 13/12(1998-12), 3473-3477 0884-2914 13:12<3473 1998 13 JMR CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-cambridge