Published August 2000 | Version v1
Journal article Metadata-only

Specific features of phase formation in nanosized Fe-W compositions

Creators

  • 1. Moskovskij Gosudarstvennyj Univ., Moscow (Russian Federation)
  • 2. Moskovskij Inst. Stali i Splavov, Moscow (Russian Federation)

Description

Nanosized compositions of different structure in the Fe-W system prepared by the method of joint reduction in hydrogen flow of a mechanical mixture of oxygen-containing compounds of iron and tungsten were studied. Low-temperature phase formation occurring in the process of reduction was analyzed by the methods of the Moessbauer spectroscopy and X-ray diffraction. Influence of nonequilibrium character of reduction process in hydrogen flow and of initial concentration of the mixture reduced on stoichiometry and specific features of the structure of nanocrystal phases formed is discussed

Abstract (Russian)

Исследованы наноразмерные композиции различного состава в системе Fe-W, полученные методом совместного восстановления в токе водорода механической смеси кислородсодержащих соединений железа и вольфрама. Происходящие в процессе восстановления низкотемпературное фазообразование проанализировано методами мессбауэровской спектроскопии и рентгеновской дифракции. Обсуждено влияние неравновесности процесса восстановления в токе водорода и исходной концентрации восстанавливаемой смеси на стехиометрию и особенности структуры образующихся нанокристаллических фаз

Additional details

Additional titles

Original title (Russian)
Исследование особенностей фазообразования в наноразмерных композициях Фе с W

Publishing Information

Journal Title
Zhurnal Neorganicheskoj Khimii
Journal Volume
45
Journal Issue
8
Journal Page Range
p. 1388-1393
ISSN
0044-457X
CODEN
ZNOKAQ

INIS

Country of Publication
Russian Federation
Country of Input or Organization
Russian Federation
INIS RN
32030256
Subject category
S36: MATERIALS SCIENCE;
Descriptors DEI
CHEMICAL COMPOSITION; HYDROGEN; INTERMETALLIC COMPOUNDS; IRON ALLOYS; IRON HYDROXIDES; MOESSBAUER EFFECT; PARTICLE SIZE; PHASE DIAGRAMS; PHASE STUDIES; REDUCTION; SOLID SOLUTIONS; TEMPERATURE RANGE 1000-4000 K; TUNGSTEN ALLOYS; TUNGSTEN COMPOUNDS; X-RAY DIFFRACTION
Descriptors DEC
ALLOYS; CHEMICAL REACTIONS; COHERENT SCATTERING; DIAGRAMS; DIFFRACTION; DISPERSIONS; ELEMENTS; HOMOGENEOUS MIXTURES; HYDROGEN COMPOUNDS; HYDROXIDES; INFORMATION; IRON COMPOUNDS; MIXTURES; NONMETALS; OXYGEN COMPOUNDS; REFRACTORY METAL COMPOUNDS; SCATTERING; SIZE; SOLUTIONS; TEMPERATURE RANGE; TRANSITION ELEMENT ALLOYS; TRANSITION ELEMENT COMPOUNDS

Optional Information

Notes
18 refs., 5 figs., 2 tabs.