Abstract

The process of organoyttriumoxanealumoxanes co-condensation with chromium acetylacetonate has been studied, as a result chromium-containing organoyttriumoxanealumoxanes were obtained, which are ceramic-forming oligomers and may have fiber-forming properties. Their physicochemical characteristics have been determined by NMR, IR spectroscopy, SEM, TGA, XRD and elemental analysis. It has been found that when the molar ratio of chromium-containing organoyttriumoxanealumoxanes is Al/Y ≈ 2 and Al/Cr ≈ 180 they have fiber-forming properties. Polymer fibers were produced from chromium-containing organoyttriumoxanealumoxanes by melt spinning. The process of thermochemical transformation of synthesized chromium-containing organoyttriumoxanealumoxanes into the ceramic phase has been studied. It is found out that the pyrolysis of chromium-containing organoyttriumoxanealumoxanes leads to the formation of Y₃(Cr_xAl_1−x)₅O₁₂, YAl_yCr_1-yO₃ and α-(Al_2−xCr_xO₃). That is, these oligomers can be used to create a new generation of heatresistant, optically-transparent, corrosion—and radiation-resistant multicomponent ceramics based on aluminum, yttrium and chromium oxides.

Graphic Abstract

中文翻译：

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有机钇氧杂铝氧烷与乙酰丙酮铬的缩合

摘要

研究了有机钇氧杂铝氧烷与乙酰丙酮铬共缩合反应的过程，得到了含铬的有机钇氧氧烷铝氧烷，它是陶瓷形成的低聚物，可能具有成纤性能。它们的理化特性已通过核磁共振、红外光谱、扫描电镜、热重分析、XRD 和元素分析确定。已经发现，当含铬有机钇氧杂铝氧烷的摩尔比为 Al/Y ≈ 2 和 Al/Cr ≈ 180 时，它们具有成纤性能。聚合物纤维由含铬的有机钇氧杂铝氧烷通过熔体纺丝生产。研究了合成的含铬有机钇氧杂铝氧烷热化学转化为陶瓷相的过程。₃ (Cr _x Al _1-x ) ₅ O ₁₂、YAl _y Cr _1-y O ₃和α-(Al _2-x Cr _x O ₃ )。也就是说，这些低聚物可用于制造基于铝、钇和铬氧化物的新一代耐热、透光、耐腐蚀和耐辐射的多组分陶瓷。

图形摘要