フォルステライト-ベリリア系セラミックスの諸性能に関する研究 : フォルステライト-ベリリア系セラミックスの研究(第1報)

概要

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To improve the thermal shock resistance of forsterite porcelain, the effect of the addition of BeO to the mix was studied. Firing shrinkage, water absorption, apparent specific gravity, expansion and shrinkage in firing, thermal conductivity, thermal shock resistance, load bearing property, thermal expansion, electrical resistivity, dielectric loss and dielectric constant were measured using the specimens containing BeO 10,20,30,40 and 50 per cent by wt. The difference of sintering behavior of the specimens was observed at the temperatures. Higher than 1000℃. The trends of th.e change of properties of the specimens containing the different amount of BeO with increasing temperature were different according to the item of test. Two types, one changing monotonously, and the other having maximum or minimum, wre observed. It was considered that the latter would substantially be dependent on the microstructure of the specimens, while the former would not be so. The thermal shock resistance of BeO containing bodys showed a very good results. Because of their good thermal conductivity. As the forsterite porcelain containing BeO has the lower sintering temperature, the higher thermal shock resistance, and the same orders of other characteristics in comparison with the ordinary forsterite porcelain, it may be a good insulating material.
社団法人日本セラミックス協会の論文
1963-04-01