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Title: Experimental investigations and thermodynamic descriptions of the Ni-Si and C-Ni-Si systems

Abstract

The binary Ni-Si phase diagram is reassessed and a consistent set of thermodynamic parameters is obtained based on literature data which the authors could verify experimentally (15 samples involving arc melting, annealing, water quenching, X-ray diffraction (XRD), and differential thermal analysis (DTA)). Applying this description of the Ni-Si system, as well as the descriptions of the Ni-C and Si-C systems available from the literature, preliminary calculations for the C-Ni-Si phase equilibria were made in order to provide guidance in selecting the compositions of decisive ternary alloys. These alloys were subjected to an experimental procedure similar to that employed for the Ni-Si alloys. The XRD and DTA measurements resulting from these ternary alloys provided accurate information on the invariant reaction temperatures in the C-Ni-Si system. Comprehensive comparisons between calculated and measured phase diagrams show that most of the experimental information is satisfactorily accounted for by the present description of the C-Ni-Si system. The liquidus projection and reaction scheme for the whole ternary system are presented.

Authors:
;  [1]
  1. Univ. of Vienna, Wien (Austria). Inst. of Physical Chemistry
Publication Date:
Sponsoring Org.:
USDOE
OSTI Identifier:
684458
Resource Type:
Journal Article
Journal Name:
Metallurgical and Materials Transactions. A, Physical Metallurgy and Materials Science
Additional Journal Information:
Journal Volume: 30; Journal Issue: 9; Other Information: PBD: Sep 1999
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; PHASE STUDIES; THERMODYNAMIC PROPERTIES; NICKEL SILICIDES; NICKEL CARBIDES; X-RAY DIFFRACTION; DIFFERENTIAL THERMAL ANALYSIS; CHEMICAL REACTIONS; PHASE DIAGRAMS

Citation Formats

Du, Y., and Schuster, J.C. Experimental investigations and thermodynamic descriptions of the Ni-Si and C-Ni-Si systems. United States: N. p., 1999. Web. doi:10.1007/s11661-999-0249-8.
Du, Y., & Schuster, J.C. Experimental investigations and thermodynamic descriptions of the Ni-Si and C-Ni-Si systems. United States. doi:10.1007/s11661-999-0249-8.
Du, Y., and Schuster, J.C. Wed . "Experimental investigations and thermodynamic descriptions of the Ni-Si and C-Ni-Si systems". United States. doi:10.1007/s11661-999-0249-8.
@article{osti_684458,
title = {Experimental investigations and thermodynamic descriptions of the Ni-Si and C-Ni-Si systems},
author = {Du, Y. and Schuster, J.C.},
abstractNote = {The binary Ni-Si phase diagram is reassessed and a consistent set of thermodynamic parameters is obtained based on literature data which the authors could verify experimentally (15 samples involving arc melting, annealing, water quenching, X-ray diffraction (XRD), and differential thermal analysis (DTA)). Applying this description of the Ni-Si system, as well as the descriptions of the Ni-C and Si-C systems available from the literature, preliminary calculations for the C-Ni-Si phase equilibria were made in order to provide guidance in selecting the compositions of decisive ternary alloys. These alloys were subjected to an experimental procedure similar to that employed for the Ni-Si alloys. The XRD and DTA measurements resulting from these ternary alloys provided accurate information on the invariant reaction temperatures in the C-Ni-Si system. Comprehensive comparisons between calculated and measured phase diagrams show that most of the experimental information is satisfactorily accounted for by the present description of the C-Ni-Si system. The liquidus projection and reaction scheme for the whole ternary system are presented.},
doi = {10.1007/s11661-999-0249-8},
journal = {Metallurgical and Materials Transactions. A, Physical Metallurgy and Materials Science},
number = 9,
volume = 30,
place = {United States},
year = {1999},
month = {9}
}