1977 Volume 41 Issue 3 Pages 250-255
An ultra-high temperature microscope was newly designed and constructed, and it has three noticeable advantages as follows. Firstly, the maximum temperarture of specimens is available more than 2500°C by the electron beam heating. Secondary, the exchange procedures of specimens become easier by using an air-lock mechanism, so called the side-entry goniostage. Thirdly, the image contrast even under high temperatures is kept as high as that at room temperature, as the direct radiation from the heating specimen is cut off from the imaging ray by means of narrow band pass filters.
In addition, an infrared pyrometer was ready to use any programming of heating and cooling of specimens, in combination with the electron beam gun. The expected functional features were attained very successfully and some preliminary applications were also obtained.
