Геометро-топологический анализ базовых физико-химических систем для получения композиционных материалов с кобальтовой или никелевой матрицей и корундовым волокном
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Дата
2016
Автори
ORCID
DOI
Науковий ступінь
Рівень дисертації
Шифр та назва спеціальності
Рада захисту
Установа захисту
Науковий керівник
Члени комітету
Видавець
НТУ "ХПИ"
Анотація
Представлены результаты геометро-топологическиого анализа трехкомпонентных физико-химических систем Ni – NiO – Al₂O₃ и Co – CoO – Al₂O₃ которые являются основой для получения композиционных материалов с кобальтовой или никелевой металлической матрицей и корундовым волокном. Установлено субсолидусное строение трехкомпонентных физико-химических cистем Ni – NiO – Al₂O₃ и Co – CoO – Al₂O₃. Приведены результаты расчетов площадей элементарных треугольников, их степеней асимметрии, геометро-топологические характеристики фаз исследуемых систем. Установлено, что для получения композиционных материалов с металлической никелевой или кобальтовой матрицей и корундовым волокном оптимальными являются области трехкомпонентных физико-химических систем Ni – NiO – Al₂O₃ и Co – CoO – Al₂O₃, расположенные вблизи коннод (Ni, Co) – (NiAl₂O₄, CoAl₂O₄).
The results of the geometric-topological analysis of physical-chemical ternary systems Ni – NiO – Al₂O₃ and Co – CoO – Al₂O₃, which are the basis for the production of composite materials with a cobalt or nickel metal matrix and fiber corundum. It is found that the fiber metal matrix composites have two major advantages over the more common composite matrix resin they can be used at much higher temperatures and more effective in relatively small highly loaded structural elements. It has been shown that ternary composite materials can be prepared on the basis of corundum fibers for metal matrix service temperatures not higher than 950 °C. To improve service temperatures up to 1000 °C should be chosen compositions, which are located near Ni – NiAl₂O₄ and Co – CoAl₂O₄ conodes, and avoid areas that are rich in oxides of nickel and cobalt, which help to reduce the using temperature. The largest areas of existence in the physical and chemical systems (Ni, Co) – (NiO, CoO) – Al₂O₃ and the lowest degrees of asymmetry have Ni – NiAl₂O₄ – NiO and Co – CoAl₂O₄ – CoO triangles (578.0 and 576.4% respectively). The highest probability of existence have metal phase of Ni and Co, and spinels NiAl₂O₄ and CoAl₂O₄ (0,3333 rel. units for all phases). These data confirm the results of earlier calculations and rationale for the selection of areas of composite fiber materials compositions with metal matrix near Ni – NiAl₂O₄ and Co – CoAl₂O₄ conodes. Thus, for the production of composite materials with a metal cobalt or nickel matrix and corundum fiber with operating temperature over 1000 °C and stable parameters synthesis is necessary to vary the composition in the immediate vicinity to the tie lines connecting the metal and spinel compound whose quantity should be increased to increase the using temperature.
The results of the geometric-topological analysis of physical-chemical ternary systems Ni – NiO – Al₂O₃ and Co – CoO – Al₂O₃, which are the basis for the production of composite materials with a cobalt or nickel metal matrix and fiber corundum. It is found that the fiber metal matrix composites have two major advantages over the more common composite matrix resin they can be used at much higher temperatures and more effective in relatively small highly loaded structural elements. It has been shown that ternary composite materials can be prepared on the basis of corundum fibers for metal matrix service temperatures not higher than 950 °C. To improve service temperatures up to 1000 °C should be chosen compositions, which are located near Ni – NiAl₂O₄ and Co – CoAl₂O₄ conodes, and avoid areas that are rich in oxides of nickel and cobalt, which help to reduce the using temperature. The largest areas of existence in the physical and chemical systems (Ni, Co) – (NiO, CoO) – Al₂O₃ and the lowest degrees of asymmetry have Ni – NiAl₂O₄ – NiO and Co – CoAl₂O₄ – CoO triangles (578.0 and 576.4% respectively). The highest probability of existence have metal phase of Ni and Co, and spinels NiAl₂O₄ and CoAl₂O₄ (0,3333 rel. units for all phases). These data confirm the results of earlier calculations and rationale for the selection of areas of composite fiber materials compositions with metal matrix near Ni – NiAl₂O₄ and Co – CoAl₂O₄ conodes. Thus, for the production of composite materials with a metal cobalt or nickel matrix and corundum fiber with operating temperature over 1000 °C and stable parameters synthesis is necessary to vary the composition in the immediate vicinity to the tie lines connecting the metal and spinel compound whose quantity should be increased to increase the using temperature.
Опис
Ключові слова
трехкомпонентная физико-химическая система, сечение, композиционный материал, металлическая матрица, кобальт, никель, площадь треугольника, степень асимметрии, вероятность существования, three-component physical-chemical system, cross section, composite, metal matrix, cobalt, nickel, triangle area, degree of asymmetry, probability of existence
Бібліографічний опис
Ивашура М. Н. Геометро-топологический анализ базовых физико-химических систем для получения композиционных материалов с кобальтовой или никелевой матрицей и корундовым волокном / М. Н. Ивашура // Вісник Нац. техн. ун-ту "ХПІ" : зб. наук. пр. Сер. : Хімія, хімічна технологія та екологія. – Харків : НТУ "ХПІ", 2016. – № 35 (1207). – С. 80-84.