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Journal of Materials Science | 1981

Synthesis of a polytitanocarbosilane and its conversion into inorganic compounds

Seishi Yajima; Tadashi Iwai; Takemi Yamamura; Kiyohito Okamura; Yoshio Hasegawa

The novel polytitanocarbosilane, formed by the cross-linking of polycarbosilane with titanium tetra-alkoxide, was synthesized to examine the process of converting a multielement organometallic polymer into an inorganic compound. The chemical structure of this polymer was investigated by the techniques of infra-red spectroscopy (IR), gel permeation chromatography (GPC), number average molecular weight measurements and29Si nuclear magnetic resonance (NMR) measurements. The pyrolysis products in N2 gas at 1400° C and 1700° C were the microcrystalline and crystalline states of silicon carbide and titanium carbide, respectively.


Archive | 1979

Process for producing metallic nitride powder

Tadashi Iwai; Takashi Kawahito; Tetsuo Yamada


Archive | 1981

Process for producing carbonitride of metal

Tadashi Iwai; Takashi Kawahito; Masahiro Tokuse


Archive | 1981

Method of preparing polycarbosilanes

Tadashi Iwai; Takashi Kawahito; Masahiro Tokuse


Journal of Materials Science Letters | 1983

Crystallization of amorphous Si3N4 prepared by the thermal decomposition of Si(NH)2

Tetsuo Yamada; Takashi Kawahito; Tadashi Iwai


Archive | 1981

Process for producing metallic carbonitride

Tadashi Iwai; Takashi Kawahito; Masahiro Tokuse


Archive | 1982

Process for producing silicon nitride powder

Tadashi Iwai; Takashi Kawahito; Tetsuo Yamada


Archive | 1981

Process for producing chloride of elements of Group III, IV or V of Periodic Table

Tadashi Iwai; Hisayuki Mizuno; Masao Miura


Journal of Polymer Science Part A | 1979

Mechanism of radiation-induced addition reaction of carbon tetrachloride onto liquid 1,2-polybutadiene accompanied by cyclization

Hidemasa Okamoto; Shoichi Adachi; Kiyoshi Takada; Tadashi Iwai


Journal of Polymer Science Part A | 1979

Radiation‐induced addition reaction of carbon tetrachloride onto 1,2‐polybutadiene

Hidemasa Okamoto; Shoichi Adachi; Tadashi Iwai

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