| 摘要 |
PROBLEM TO BE SOLVED: To provide an inexpensive production method of a low-foaming transparent member of quartz glass, started from an open-porosity SiOgranulated body.SOLUTION: In a production method of synthetic quartz glass, a sintering atmosphere, a sintering temperature and a sintering duration are adjusted during sintering, and as a result, a densified SiOgranulated body is formed, which still contains an open porosity on the one hand, and shows an infrared transmittance Tpeculiar to the material at the wavelength of 1,700 nm on the other hand, in this case, the transmittance is in the range of 50-95% of the infrared transmittance Tof quartz glass granule of the same material.SELECTED DRAWING: None |
