Abstract: A method for producing a silicon-containing zirconia calcined body includes wet mixing a mixture to obtain a mixed slurry, with the mixture including a silicon-containing zirconia powder, a sodium carbonate powder, a tetraethoxysilane, and an adhesive; drying the mixed slurry to obtain a caked mass; grinding and sieving the caked mass to obtain a mixed powder; pressurizing and shaping the mixed powder to obtain a blank; and calcining the blank in an environment at 900-1200° C. to obtain a silicon-containing zirconia calcined body. The silicon-containing zirconia calcined body can be sintered at 1415-1450° C. into a silicon-containing zirconia sintered body, with a shrinkage ratio during sintering the silicon-containing zirconia calcined body into the silicon-containing zirconia sintered body being 22-31%.

Abstract: A method for producing a silicon-containing zirconia calcined body includes wet mixing a mixture to obtain a mixed slurry, with the mixture including a silicon-containing zirconia powder, a sodium carbonate powder, a tetraethoxysilane, and an adhesive; drying the mixed slurry to obtain a caked mass; grinding and sieving the caked mass to obtain a mixed powder; pressurizing and shaping the mixed powder to obtain a blank; and calcining the blank in an environment at 900-1200° C. to obtain a silicon-containing zirconia calcined body. The silicon-containing zirconia calcined body can be sintered at 1415-1450° C. into a silicon-containing zirconia sintered body, with a shrinkage ratio during sintering the silicon-containing zirconia calcined body into the silicon-containing zirconia sintered body being 22-31%.

Abstract: This patent discloses the composition of germanate glass and a new method for its fabrication. The composition comprises germanate, the oxide of an alkali earth group, Al.sub.2 O.sub.3, ZnO, a halides compound eg. CaF.sub.2, CaCl.sub.2 and so on,, and can combine with a series of oxygenous compounds such as silicate, borate, phosphate, arsenate, tellurate and so on, if required. The addition of an alkali oxide could increase the glass formation rate and homogeneity, and the defects of devitrification, cord, knot, and blister are reduced. Its fabricated methods which consist of the reduction pressure melting with the addition of a halide and the drying procedure. The germanate glass body that is made is colorless and transparent and it can increase the transmittance of infrared from 20% to greater than 60% in the wave length 2.75-3.0 .mu.m. The price of producing the germanate glass is decreased and the transmittance of this composition system increased from 5% to 80%.