Abstract

Ceramic-forming zirconium (hafnium)-containing yttriumoxane alumoxanes, precursors of multicomponent ceramics based on alumina, yttria and zirconia/hafnia, were synthesized by co-condensation of chelated alkoxyalumoxanes, yttrium acetylacetonate hydrate (or organic yttriumoxane alumoxanes) and zirconium or hafnium acetylacetonate. The physicochemical properties of zirconium (hafnium)-containing yttriumoxane alumoxanes were studied. Computational models of the group and elemental composition of oligomeric Zr(Hf)-containing yttriumoxane alumoxane molecules were proposed. According to X-ray diffraction and scanning electron microscopy data, pyrolysis of the oligomers at 1500–1600°C results in multicomponent nano- or fine-crystalline ceramic powders, depending on the Al/Y and Al/Zr(Hf) molar ratios.

中文翻译：

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含锆（铪）钇氧烷铝氧烷及基于其的多元陶瓷

 抽象的

通过螯合烷氧基铝氧烷、水合乙酰丙酮钇（或有机钇氧烷铝氧烷）和乙酰丙酮锆或乙酰丙酮铪的共缩合反应合成了陶瓷成型含锆（铪）钇氧烷铝氧烷，这是基于氧化铝、氧化钇和氧化锆/氧化铪的多组分陶瓷的前体。 。研究了含锆（铪）的钇氧烷铝氧烷的物理化学性质。提出了含 Zr(Hf) 低聚钇氧烷铝氧烷分子的族和元素组成的计算模型。根据 X 射线衍射和扫描电子显微镜数据，低聚物在 1500–1600°C 下热解会产生多组分纳米或细晶陶瓷粉末，具体取决于 Al/Y 和 Al/Zr(Hf) 摩尔比。