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Gas-phase production of titanium nitride and carbide powders.

Authors
Harbuck-DD; Davidson-CF; Shirts-MB
Source
J Met 1986 Sep; :47-50
NIOSHTIC No.
10005633
Abstract
This paper describes an investigation of a procedure to produce fine-sized titanium nitride, carbide, and carbonitride powders. These powders, because of their high hardness and abrasion resistance, can be substituted for tungsten carbide in some cutting tool applications. Titanium nitride and carbide powders can be cemented together with nickel. The investigated approach produces titanium nitride by reducing titanium tetrachloride with magnesium or sodium vapor in a nitrogen atmosphere at temperatures between 750 deg and 1,050 deg C (1,382 deg and 1,922 deg F.) Titanium carbide and titanium carbonitride can be formed by adding methane to the nitrogen atmosphere. Titanium tetrachloride reduction efficiencies as high as 98% are achieved. X-ray diffraction analyses showed that the powders contain no major inpurities. Because the reactions occur in the gas phase, powders finer than 1 um are produced.
CODEN
JOMTAA
Publication Date
19860101
Document Type
OP; Journal Article
Fiscal Year
1986
NTIS Accession No.
NTIS Price
Identifying No.
OP 35-87
ISSN
0148-6608
NIOSH Division
SLRC
Source Name
Journal of Metals
State
UT
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