Ceramic oxide fibers have low heat conductivity and high heat stability along with low density such that these materials are in demand for high-temperature thermal insulation. However, the creep of oxide fibers at high temperatures limits their use as composite components. We studied the crystallization of oxide fibers with the following compositions (in mass %): 1) 85% Al₃O₃ + 15% SiO₂, 2) 90% Al₂O₃ + 10% SiO₂, and 3) 95% Al₂O₃ + 4% ZrO₂ + 1% Y₂O₃. The fibers were subjected to heat treatment at 700°, 900°, and 1280°C and we studied their phase composition and strength properties. The greatest tensile strength was found for the first fiber but all the samples showed a tendency for granule growth and loss of strength by the action of high temperatures. Further investigation required to explore possible use of other precursors and the effect of technological conditions on the formation and crystallization of such fibers.

中文翻译：

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含氧化硅和氧化锆添加剂的氧化铝连续纤维的制备

陶瓷氧化物纤维具有低导热率和高热稳定性以及低密度，使得这些材料需要高温绝热。但是，氧化物纤维在高温下的蠕变限制了它们作为复合材料的用途。我们研究了具有下列组合物的氧化纤维（质量％）的结晶：1）85％的Al ₃ ö ₃ + 15％的SiO ₂，2）90％的Al ₂ ö ₃ + 10％的SiO ₂，3）95％的Al ₂ O ₃ + 4％ZrO ₂ + 1％Y ₂ O ₃。纤维在700°，900°和1280°C进行了热处理，我们研究了它们的相组成和强度特性。对于第一纤维发现最大的拉伸强度，但是所有样品都显示出颗粒生长的趋势，并且由于高温的作用而丧失强度。需要进一步研究以探索其他前体的可能用途以及技术条件对此类纤维形成和结晶的影响。