1. 1) Y. Sakai, “Ceramics radiant tube, hand book of industrial furnace”, pp.671-674 (1997) Japan Industrial Furnace Manufactures Association.
2. 2) Y. Kawagoe, M. Ito, K. Nakano and H. Kanamori, “Development of an indirect gas-fired burner with a ceramic tube for use in vacuum heat treating furnaces with high-pressure gas quenching”, Industrial Heating, Vol.46, No.3, pp.1-5 (2009) Japan Industrial Furnace Manufactures Association.
3. 3) JIS-R1601, “Testing method for flexural strength (modulus of rupture) of fine ceramics at room temperature” (1981).
4. 4) JIS-R1604, “Testing method for flexural strength (modulus of rupture) of fine ceramics at elevated temperature” (1987).
5. 5) JIS-R1625, “Weible statistics of strength data for fine ceramics” (1996).