@article{oai:sucra.repo.nii.ac.jp:00018484, author = {小林, 秀彦 and 撹上, 将規}, journal = {CACS FORUM : 埼玉大学研究機構科学分析支援センター機関誌}, month = {}, note = {As a low-temperature synthesis route for boron carbide (B4C) powder by carbothermal reduction of boron oxide (B2O3), we focused on an approach using a condensed product prepared from boric acid (H3BO3) and a polyol. The thermal decomposition of a condensed H3BO3-polyol product in air was performed to control the amount of carbon to the stoichiometric C/B2O3 ratio required for carbothermal reduction. Within the thermally decomposed product consisting of B2O3 and carbon components (B4C precursor), a B2O3/carbon structure at the nanometer scale was formed. The improved dispersibility and homogeneity of the B2O3/carbon microstructure accelerated the B4C formation at a lower temperature. Consequently, crystalline B4C powder with little free carbon was synthesized by heat treatment at a low temperature of 1200 ℃ in an Ar flow. This low-temperature synthesis approach was applied to the low-temperature synthesis of other boride powders., text, application/pdf}, pages = {6--12}, title = {有機化合物を用いた前駆体構造制御によるホウ化物粉末の低温合成《マイレビュー》}, volume = {9}, year = {2018}, yomi = {コバヤシ, ヒデヒコ and カキアゲ, マサキ} }