Zobrazeno 1 - 10
of 76
pro vyhledávání: '"Jiro Fukunaga"'
Publikováno v:
Journal of Materials Science. 35:4627-4634
5Na2O·95(SiO2 + TiO2 + ZrO2) gels together with Na2O-MO2 gels (MO2 = SiO2, TiO2, ZrO2) were synthesized and effect of Na2O addition to the gel formation and crystallization behavior were studied. From Si(OC2H5)4, Ti(iso-OC3H7)4, Zr(n-OC3H7)4 and NaO
Publikováno v:
Journal of Sol-Gel Science and Technology. 19:795-798
SiO2-TiO2-ZrO2 and 5Na2O·95(SiO2 + TiO2 + ZrO2) gels were synthesized and role of Na2O in gel formation and crystallization behavior of gels were studied. From Si(OC2H5)4, Ti(iso-OC3H7)4, Zr(n-OC3H7)4 and NaOCH3 solutions in EtOH without H2O, transp
Publikováno v:
Journal of Non-Crystalline Solids. 255:127-131
The variation of Ag 2 O solubility under air atmosphere with the chemical potential of Ag was measured for the B 2 O 3 –Al 2 O 3 system by equilibrating with a Ag–Au alloy with various Ag contents at 1373 K. It was found that, in this system, the
Autor:
Jiro Fukunaga, Anucha Wannagon, Tetsuso Itakura, Toshiyuki Horai, Takashi Wakasugi, Rikuo Ota
Publikováno v:
Journal of the Society of Materials Science, Japan. 48:38-44
Amorphous-forming regions in the RF-sputtered SiO2-ZrO2 films determined by X-ray diffraction were in the range 0-70mol%ZrO2 under sputtering power 50W, sputtering time 15h and in the range 0-68mol%ZrO2 under sputtering power 100W, sputtering time 25
Publikováno v:
Journal of Materials Science. 34:5937-5941
A liquid model was proposed wherein crystal embryos should exist in equilibrated melts at temperatures even above the melting point or liquidus temperature and the number density of embryos should decrease as the melting temperature increases. Crysta
Publikováno v:
Journal of Non-Crystalline Solids. 219:70-74
A liquid model is proposed wherein crystal embryos exist at temperatures above melting point. The number density of embryos should decrease as temperature increases. Crystallization behavior of Li2OSiO2 glasses of 31, 33 and 35 mol% Li2O was studi
Publikováno v:
Journal of Non-Crystalline Solids. 210:141-147
The solubility of Ag 2 O was measured for the Na 2 O–B 2 O 3 and Na 2 O–B 2 O 3 –Al 2 O 3 system with the rotating crucible method and static method, respectively, under air atmosphere at temperatures ranging from 1273 to 1423 K. The contaminat
Publikováno v:
Journal of the Ceramic Society of Japan. 105:577-581
CaO-SiO2 gel was prepared from Ca(NO3)2 and TEOS. The mixture of TEOS, Ca(NO3)2, H2O and EtOH was immiscible at first, but became miscible by stirring for several hours. Wet gels containing 10-60mol%CaO were formed and dry gels were amorphous at the
Publikováno v:
Journal of the Society of Materials Science, Japan. 46:210-215
Gels were formed in the SiO2-TiO2-ZrO2 system. All of them were amorphous by XRD analysis, even though opaque gels were formed in the compositions range more than 80mol% TiO2 and 60mol% ZrO2, and transparent gels were formed in the rest compositions.
Publikováno v:
Journal of the Ceramic Society of Japan. 105:940-946
Gels were prepared in the SiO2-TiO2-ZrO2 system (SiO2, TiO2 and ZrO2=0-100mol%) from Si(OC2H5)4, Ti(O-isoC3H7)4 and Zr(O-nC3H7)4 solutions with or without H2O and CH3COOH. Without H2O and CH3COOH transparent bulk gels were formed in the range 30-100m