GB974447A - Metallic carbides and a process of producing the same - Google Patents

Metallic carbides and a process of producing the same

Info

Publication number
GB974447A
GB974447A GB39230/62A GB3923062A GB974447A GB 974447 A GB974447 A GB 974447A GB 39230/62 A GB39230/62 A GB 39230/62A GB 3923062 A GB3923062 A GB 3923062A GB 974447 A GB974447 A GB 974447A
Authority
GB
United Kingdom
Prior art keywords
mercury
vapours
tube
specified
carbides
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB39230/62A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
High Temperature Materials Inc
Original Assignee
High Temperature Materials Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by High Temperature Materials Inc filed Critical High Temperature Materials Inc
Publication of GB974447A publication Critical patent/GB974447A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B32/00—Carbon; Compounds thereof
    • C01B32/90—Carbides
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/60—Particles characterised by their size
    • C01P2004/61—Micrometer sized, i.e. from 1-100 micrometer
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/60—Particles characterised by their size
    • C01P2004/62—Submicrometer sized, i.e. from 0.1-1 micrometer
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/32—Thermal properties
    • C01P2006/33—Phase transition temperatures
    • C01P2006/34—Melting temperatures

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Carbon And Carbon Compounds (AREA)

Abstract

Carbides are produced by reacting the vapours of a metallic halide or silicon halide with a gaseous hydrocarbon within the temperature range 1500-3000 DEG C. at pressures of 1 mm.-200 mm. of mercury. Specified metals are tantalum, niobium, hafnium, titanium, zirconium, tungsten, molybdenum, thorium and uranium, and methane, ethane, propane and benzene are specified as hydrocarbon gases. Powders of the carbides are produced by using pressures of 100-200 mm. of mercury, and superior hardness is obtained if 1-100 mm. pressure is employed both processes employing the temperature range as above. Substrates placed in the reaction chamber may be coated with carbide, preferably at 1700-2500 DEG C. and 1 m.m.-200 m.m. pressure of mercury.ALSO:<PICT:0974447/C6-C7/1> In a process for coating substrates with metallic carbides (including silicon carbide) the surface of the substrate is contacted with the vapours of a hydrocarbon gas and a metallic halide, e.g. a chloride, at temperature of 1700-2500 DEG C. and at a pressure of 1-200 mm. of mercury. Specified metals are Ta, Nb, Hf, Ti, Si, Zr, W, Mo, Th and U. Methane, ethane, propane and benzene are specified hydrocarbon gases. The apparatus shown in Fig. 1 provides an evaporator 12 in which a metallic halide is heated by heating jacket 17, the vapours passing out through heated tube 14 to flowmeter 16 and control valve 19. The hydrocarbon gas is fed through heated tube 21 to the central feed tube 23 where mixing of the vapours from tube 21 and control valve 19 occurs. The gases are then injected by injector 24 into a conventional furnace 43 having a suitable substrate 44 in a deposition tube 42.
GB39230/62A 1962-02-13 1962-10-17 Metallic carbides and a process of producing the same Expired GB974447A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US17297362A 1962-02-13 1962-02-13

Publications (1)

Publication Number Publication Date
GB974447A true GB974447A (en) 1964-11-04

Family

ID=22629955

Family Applications (1)

Application Number Title Priority Date Filing Date
GB39230/62A Expired GB974447A (en) 1962-02-13 1962-10-17 Metallic carbides and a process of producing the same

Country Status (2)

Country Link
DE (1) DE1229503B (en)
GB (1) GB974447A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3224644A1 (en) * 1982-07-01 1984-01-05 Radij Konstantinovi&ccaron; &Ccaron;u&zcaron;ko Cathode for gas lasers and method for producing it

Also Published As

Publication number Publication date
DE1229503B (en) 1966-12-01

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