Influence of temperature and chemical composition on phase transformations of selected oxide melts

被引：0
|
作者：
机构：
[1] Dudek, R.
[2] Rosypalová, S.
[3] Dobrovská, J.
来源：
Dudek, R. | 1600年 / Faculty of Metallurgy卷 / 52期
关键词：
Phase transitions - Sintering - Alumina - Aluminum oxide - Molds - X ray diffraction - Powders - Silica;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The paper deals with structural changes of solid phase of selected oxide systems during their transition into liquid state. Analyses concerned poly-component systems forming basis of casting powders for CCM mould. Industrially used oxide system with prevailing contents of CaO-Al2O3-SiO2 components and with numerous accompanying admixtures was tested. Investigation was focused on temperatures, during which individual phases disappear and precipitate, as well as on influence of CaO content on phase composition at selected temperatures. The experiments were realised with use of original methodology consisting of shock cooling of the tested melt in liquid nitrogen. Thus obtained samples were further investigated by X-ray diffraction phase analyses at ambient temperatures. The obtained results provide additional data on physical-chemical properties of oxide systems, such as surface tension, viscosity, sintering intervals, etc., which can be used in technological practice for appropriate lubrication effect of casting powders in the mould.
引用
收藏
相关论文
共 50 条
  • [11] STUDY OF SURFACE TENSION OF INORGANIC MELTS BASED ON THEIR CHEMICAL COMPOSITION AND TEMPERATURE
    Dudek, R.
    Dobrovsky, L'.
    Dobrovska, J.
    METALURGIJA, 2009, 48 (04): : 239 - 242
  • [12] Influence of chemical and phase composition in the hydrometallurgical processing of Fe-Ti oxide phases
    Schirmer, Thomas
    Achimovicova, Marcela
    Goldmann, Daniel
    HYDROMETALLURGY, 2020, 191 (191)
  • [13] Phase Transformations and Metallization of Magnesium Oxide at High Pressure and Temperature
    McWilliams, R. Stewart
    Spaulding, Dylan K.
    Eggert, Jon H.
    Celliers, Peter M.
    Hicks, Damien G.
    Smith, Raymond F.
    Collins, Gilbert W.
    Jeanloz, Raymond
    SCIENCE, 2012, 338 (6112) : 1330 - 1333
  • [14] Formation of the phase composition of nonequilibrium samples prepared by rapid solidification of oxide melts
    V. I. Kosyakov
    E. G. Tsvetkov
    Bulletin of the Russian Academy of Sciences: Physics, 2009, 73 (8) : 1147 - 1149
  • [15] Phase Transformations in Monazite-NaF Melts
    Delitsyn, L. M.
    Sinel'shchikov, V. A.
    Kulumbegov, R., V
    RUSSIAN METALLURGY, 2022, 2022 (02): : 122 - 127
  • [16] Calculation of temperature dependences of the viscosity and volume relaxation time for oxide glass-forming melts from chemical composition and dilatometric glass transition temperature
    Priven, AI
    GLASS PHYSICS AND CHEMISTRY, 2001, 27 (06) : 527 - 542
  • [17] Calculation of Temperature Dependences of the Viscosity and Volume Relaxation Time for Oxide Glass-Forming Melts from Chemical Composition and Dilatometric Glass Transition Temperature
    A. I. Priven
    Glass Physics and Chemistry, 2001, 27 : 527 - 542
  • [18] INFLUENCE OF THE CONDENSATION RATE AND TEMPERATURE ON THE PHASE-COMPOSITION OF VACUUM CONDENSATES OF ALUMINUM-OXIDE
    BATALIN, GI
    KUSHKOV, VD
    KACHUR, AV
    ZASLAVSKII, AM
    GRECHANYUK, NI
    INORGANIC MATERIALS, 1985, 21 (02) : 287 - 288
  • [19] Aluminum partitioning between zircon and haplogranitic melts: The influence of temperature and melt composition
    Wang, Yanling
    Trail, Dustin
    CHEMICAL GEOLOGY, 2019, 511 : 71 - 80
  • [20] Experimental study of temperature influence on interaction between melts of acid and basic composition
    Sobolev, RN
    Kurbyko, TA
    DOKLADY AKADEMII NAUK, 1998, 359 (04) : 532 - 535
12345