Abstract

Zr(Hf)-oxanemagnesiumoxanealumoxane oligomers have been synthesized as precursors of modified aluminum–magnesium ceramics. Physicochemical properties of Zr(Hf)-oxanemagnesiumoxanealumoxanes and ceramic samples were studied. Computation models of group and elemental composition of oligomeric molecules of Zr(Hf)-containing magnesiumoxanealumoxanes have been proposed. It was proved by X-Ray diffraction (XRD) and scanning electron microscopy (SEM) that the pyrolysis of metaloxanemagnesiumoxanealumoxanes at 1500°C led to formation of high-purity fine-crystalline ceramics of spinel composition modified by refractory metal oxides. It was shown that Zr(Hf)-oxanemagnesiumoxanealumoxanes are precursors of high-purity high-temperature stable aluminum–magnesium ceramics modified by zirconium or hafnium oxides.

中文翻译：

---

Zr(Hf)-Oxanemagnesiumoxanealumoxanes 作为铝镁陶瓷的前体

摘要

Zr(Hf)-oxanemagnesiumoxanealumoxane 低聚物已被合成为改性铝镁陶瓷的前体。研究了 Zr(Hf)-oxanemagnesiumoxanealumoxanes 和陶瓷样品的物理化学性质。已经提出了含 Zr(Hf) 的镁氧铝氧烷低聚分子的基团和元素组成的计算模型。X 射线衍射 (XRD) 和扫描电子显微镜 (SEM) 证明，金属氧烷镁氧铝氧烷在 1500°C 下热解形成由难熔金属氧化物改性的尖晶石成分的高纯度细晶陶瓷。结果表明，Zr(Hf)-oxanemagnesiumoxanealumoxanes 是锆或铪氧化物改性的高纯度高温稳定铝镁陶瓷的前驱体。