Structural features of "Carbonado" diamond polycrystalline composite materials

被引：0
|
作者：
Laptev, A. I. [1 ]
Nozhkina, A. V. [2 ]
Zaitsev, A. K. [1 ]
Ermolaev, A. A. [1 ]
机构：
[1] Natl Univ Sci & Technol MISiS, Moscow 119049, Russia
[2] All Russian Res Inst Nat & Artificial Diamonds &, Moscow 107996, Russia
来源：
RUSSIAN JOURNAL OF NON-FERROUS METALS | 2012年 / 53卷 / 06期
关键词：
PCD; synthesis; high pressures; HTHP; martensite transformation; carbonado; crystallites; CSR size;
D O I：
10.3103/S1067821212060041
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
A thermodynamic analysis of the graphite -> diamond transformation during the synthesis of diamond polycrystals is performed. It is established that the critical nucleus size decreases as the pressure increases, being 2.3 nm for p = 12 GPa. It is established when studying the crystal structure of diamond polycrystals that their block size (coherent scattering region (CSR)) is independent of the synthesis pressure and exceeds the block size of the starting graphite. It is shown that the features for martensite transformation in metals and alloys are unobservable during the synthesis of diamond polycrystals.
引用
收藏
页码：471 / 475
页数：5
相关论文
共 50 条
  • [31] RELATIONSHIP OF DIAMOND AND CARBONADO (CATHODOLUMINESCENCE AND ISOTOPY)
    Makeev, A. B.
    Ivanukh, V.
    Obyden, S. K.
    Ivannikov, P. V.
    Bryanchaninova, N. I.
    GEORESURSY, 2005, 17 (02) : 34 - +
  • [32] Structural features of composite materials produced by melt quenching
    Shelyakov A.V.
    Glezer A.M.
    Fedotov V.T.
    Roesner H.
    Wilde G.
    Inorganic Materials: Applied Research, 2011, 2 (1) : 81 - 84
  • [33] ISOTOPIC COMPOSITION OF DIAMOND AND CARBONADO CRYSTALS
    VINOGRADOV, AP
    KROPOTOV.OI
    ORLOV, YL
    GRINENKO, VA
    GEOCHEMISTRY INTERNATIONAL, 1966, 3 (06) : 1123 - +
  • [34] CARBONADO DIAMOND: A REVIEW OF PROPERTIES AND ORIGIN
    Haggerty, Stephen E.
    GEMS & GEMOLOGY, 2017, 53 (02): : 168 - 179
  • [35] Mineralogical and crystallographic features of polycrystalline yakutite diamond
    Ohfuji, Hiroaki
    Nakaya, Motosuke
    Yelisseyev, Alexander P.
    Afanasiev, Valentin P.
    Litasov, Konstantin D.
    JOURNAL OF MINERALOGICAL AND PETROLOGICAL SCIENCES, 2017, 112 (01) : 46 - 51
  • [36] Synthesis of Polycrystalline Carbonado Diamonds from Pyrographite
    A. V. Elyutin
    A. I. Laptev
    A. V. Manukhin
    D. S. Sannikov
    L. M. Kryukova
    Doklady Chemistry, 2001, 378 : 160 - 164
  • [37] Diamond polycrystalline composite material and its properties
    Shul'zhenko, A. A.
    Gargin, V. G.
    Rusinova, N. A.
    Osipov, A. S.
    Loshak, M. G.
    Aleksandrova, L. I.
    Bogdanov, R. K.
    Zakora, A. P.
    Tkach, V. N.
    JOURNAL OF SUPERHARD MATERIALS, 2010, 32 (06) : 367 - 374
  • [38] Diamond polycrystalline composite material and its properties
    A. A. Shul’zhenko
    V. G. Gargin
    N. A. Rusinova
    A. S. Osipov
    M. G. Loshak
    L. I. Aleksandrova
    R. K. Bogdanov
    A. P. Zakora
    V. N. Tkach
    Journal of Superhard Materials, 2010, 32 : 367 - 374
  • [39] Hydrous fluid as the growth media of natural polycrystalline diamond, carbonado: Implication from IR spectra and microtextural observations
    Ishibashi, Hidemi
    Kagi, Hiroyuki
    Sakuai, Haruko
    Ohfuji, Hiroaki
    Sumino, Hirochika
    AMERICAN MINERALOGIST, 2012, 97 (8-9) : 1366 - 1372
  • [40] Classification of ballas and carbonado synthetic polycrystalline diamonds
    Laptev A.I.
    Steel in Translation, 2014, 44 (01) : 29 - 33
12345