Development of precursor ceramics using organic silicon polymer
Development of precursor ceramics using organic silicon polymer
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使用有机硅聚合物开发前体陶瓷
DOI：
10.1111/ijac.13572
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发表时间：
2020
影响因子：
2.1
通讯作者：
Ryutaro Usukawa
中科院分区：
文献类型：
--
作者：
Toshihiro Ishikawa;Ryutaro Usukawa
本文涉及美国陶瓷协会于2020年1月27日授予作者（石川俊博）的桥梁建筑奖。以聚碳硅烷为原料，开发了多种功能陶瓷。自1983年以来，宇部工业株式会社以聚碳硅烷为原料，生产了多种SiC纤维。其中，以含有少量铝的有机硅聚合物（聚铝碳硅烷）为原料，开发了耐热性最高的SiC多晶纤维（Tyranno SA），其耐热温度可达2000 ° C。通过采用固化（在空气中）和烧制（在氮气气氛中在1300 ° C下）使用前体纤维的方法，得到含有少量铝的（Si-Al-C-O纤维）;随后在氩气气氛中在更高温度（~2000 ° C）下进行热处理导致碳热还原（SiO2 + 3C SiC +2CO（g））和烧结工艺，生产上述SiC-多晶纤维（Tyranno SA）。同年，我们还使用相同的原材料纤维（Si-Al-C-O纤维）开发了一种新型的韧性导热SiC复合材料（SA-Tyrannohex），其在空气中的强度高达1600 ° C。这种陶瓷由非常细的六方柱状SiC多晶纤维高度有序、紧密堆积的结构组成，纤维之间有一层薄的界面碳层。此外，以聚碳硅烷为原料，充分利用聚碳硅烷中所含的添加剂（叔丁醇钛）的相分离（渗出），成功开发了具有由TiO2纳米晶构成的梯度表面层的强光催化纤维（TiO2/SiO2纤维）。本文将沿着历史背景，叙述这些材料的发展故事和随后的进展。
This paper relates to the Bridge Building Award, which was presented to the author (Toshihiro Ishikawa) by the American Ceramic Society on 27 January 2020. We have developed many types of functional ceramics using polycarbosilane as a raw material. Since 1983, several grades of SiC‐based fibers have been produced from polycarbosilane by Ube Industries, Ltd. Of these grades, we developed the highest heat‐resistant SiC‐polycrystalline fiber (Tyranno SA), which can withstand up to 2000°C, using an organic silicon polymer (poly‐aluminocarbosilane) containing a small amount of aluminum as a precursor material. By employing curing (in air) and firing (in nitrogen atmosphere at 1300°C) processes using the precursor fiber, an amorphous fiber (Si‐Al‐C‐O fiber) containing a small amount of aluminum was obtained; subsequent heat treatment at higher temperatures (~2000°C) in argon atmosphere led to carbothermal reduction (SiO2+ 3C SiC + 2CO(g)) and a sintering process, producing the abovementioned SiC‐polycrystalline fiber (Tyranno SA). In the same year, using the same raw precursor fiber (Si‐Al‐C‐O fiber), we also developed a new type of tough, thermally conductive SiC composite (SA‐Tyrannohex) with high strength up to 1600°C in air. This ceramic consists of a highly ordered, close‐packed structure of very fine hexagonal columnar SiC‐polycrystalline fibers with a thin interfacial carbon layer between them. Further, by using the polycarbosilane as a starting material, we successfully developed a strong photocatalytic fiber (TiO2/SiO2fiber) with a gradient surface layer composed of TiO2‐nanocrystals, making the best use of controlled phase separation (bleed‐out) of additives (titanium (IV) tert‐butoxide) contained in polycarbosilane. In this paper, the story of the development of these materials and the subsequent progress will be described along with the historical background.
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影响因子：
--
作者：
T. Ishikawa
通讯作者：
T. Ishikawa
非晶Si-Al-C-O纤维转化为近化学计量SiC多晶纤维的过程
DOI：
--
发表时间：
2016
期刊：
影响因子：
--
作者：
Ryutaro Usukawa;H. Oda;T. Ishikawa
通讯作者：
T. Ishikawa
影响因子：
4.5
作者：
K. Itatani;K. Hattori;D. Harima;M. Aizawa;I. Okada;I. Davies;H. Suemasu;A. Nozue
通讯作者：
K. Itatani;K. Hattori;D. Harima;M. Aizawa;I. Okada;I. Davies;H. Suemasu;A. Nozue
影响因子：
2.1
作者：
H. Oda;T. Ishikawa
通讯作者：
H. Oda;T. Ishikawa
DOI：
10.1016/j.jeurceramsoc.2016.02.022
发表时间：
2016-11-01
影响因子：
5.7
作者：
Ishikawa, Toshihiro;Oda, Hiroshi
通讯作者：
Oda, Hiroshi