Microstructural Development of Ca-α-Sialon under Different Processing Conditions
Source abstract
Abstract
Elongated α-Sialon grains were produced in pressureless sintered Ca-α-Sialon ceramics with the composition Ca1.8Si6.6Al5.4O1.8N14.2. The effect of the processing conditions, such as heating rate and middle dwelling, on the microstructure of the material was studied by SEM,along with the discussion on the nucleation and growth mechanism of the elongated α-Sialon grains. It was found that elongated α-Sialon grains are easier to develop with fewer nuclei and abundant liquid phase during sintering, while the formation and redissolution of the middle phase (gehlenite) is directly related to nuclei number and quantity of the liquid phase.
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Research context
OpenAlex topics: Aerogels and thermal insulation · Mesoporous Materials and Catalysis · Advanced ceramic materials synthesis
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