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Low thermal expansion refractory composites based on CaAl4O7 by S Jonas; F Nadachowski; D Szwagierczak is a Materials Science article available to read on EtoBox.
What is Low thermal expansion refractory composites based on CaAl4O7 about?
Following the previously reported elaboration of low thermal expansion refractory composites based on CaAl 4 O 7 , further compositions of this type are presented. They are principally based on combinations of CaAl 4 O 7 with MgAl 2 O 4 ; also, complementary data relating to those with CaZrO 3 are given. Specially adjusted bimodal particle size distributions were applied: granular fractions (0.09±0.5 mm) of the spinel and the zirconate embedded in ®ne (under 0.06) calcium dialuminate matrices. It could be shown that composites with up to more than 50% volume content of MgAl 2 O 4 and CaZrO 3 grains will retain the merit of low expansion coecients imposed by the matrix in spite of the much higher values of this property characteristic of both the granular constituents. A peculiar phenomenon of expansion even lower than that of CaAl 4 O 7 itself was observed, too. The rather complex relations between the thermal expansion and composition/microstructure features are discussed and some relevant de®nitions are proposed. The added two minerals contributing to the favourable behaviour of the composites as a whole are fully compatible at high temperatures with the dialuminate. Interpretati
Who reads Low thermal expansion refractory composites based on CaAl4O7?
It is typically read by researchers, students, and practitioners in Materials Science.
- Author
- S Jonas; F Nadachowski; D Szwagierczak
- Publisher
- Elsevier Science; Elsevier ; Elsevier Ltd.; Elsevier BV (ISSN 0272-8842)
- Published
- 1999
- Language
- EN
- Field
- Materials Science (Physical Sciences)