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3 edition of Thermogravimetric study of the lower nitride of chromium found in the catalog.

Thermogravimetric study of the lower nitride of chromium

T. Mills

Thermogravimetric study of the lower nitride of chromium

by T. Mills

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  • 21 Currently reading

Published by Dept. of Supply, Australian Defence Scientific Service, Aeronautical Research Laboratories in Melbourne .
Written in English

    Subjects:
  • Chromium nitrides.,
  • Thermogravimetry.

  • Edition Notes

    Includes bibliographical references.

    Statementby T. Mills.
    SeriesMetallurgy report, 66
    Classifications
    LC ClassificationsTN4 .M357 no. 66
    The Physical Object
    Pagination10, [15] l.
    Number of Pages15
    ID Numbers
    Open LibraryOL4370937M
    LC Control Number78557421

    Abstract: Chromium nitride and silicon doped chromium nitride thin films have been deposited by r.f. reactive magnetron sputtering. The effect of processing parameters on the properties of chromium nitride films and the correspondent influence of the addition of silicon on the chromium nitride matrix in the films structure and mechanical properties have been investigated. It is a heat treatment process that is done through immersion of the barrel in a molten salt bath that is heated to , degrees F, depending on the steel type, time run and case depth required.

    Chromium carbide (Cr-C) and chromium nitride (Cr-N) powders were compared with a chromium metal powder (Cr-metal) to evaluate their chemical stability in solution. All three powders were exposed in five different synthetic biological solutions of varying pH and chemical composition simulating selected human exposure conditions. Characterisation of the powders, using GI-XRD, revealed that the Cited by: macroporous chromium nitride and chromium titanium nitride with an inverse opal morphology. The material is addition to the our study of using metal chlorideparticle size requirement, interest has been given to decomposition, thermogravimetric analysis (TGA) was carried out in air. The change of weight and its derivative as a function.

    In this study, different concentrations of Al-doped Lithium Lanthanum Zirconate (Al-doped LLZ) having the formula of Li x Al x La 3 Zr 2 O 12 with x = ,, , were synthesized via modified Pechini method and the effect of sintering temperatures, and °C, on the resulting properties were investigated. X-ray diffraction. A more recent study from Greece reported an association between chromium exposure in drinking water and some hematological and biochemical parameters. A study in India evaluated adverse health effects on a population exposed to high concentrations of Cr(VI) (~ 20 mg/L) [ 40 ], and reported a slightly increased incidence of gastrointestinal and Cited by:


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Thermogravimetric study of the lower nitride of chromium by T. Mills Download PDF EPUB FB2

Pressure-temperature-composition relations of the lower nitride of chromium, Cr 2 N, have been studied in detail over the temperature range °– °C by a thermogravimetric technique. From these data and earlier work, partial and integral thermodynamic functions of the Cr N system.

This study compares the high temperature reactions of potassium chloride (KCl) and potassium carbonate (K 2 CO 3), two salts found in fly ashes formed in biomass combustion, with both pure metallic chromium (Cr) and chromium oxide (Cr 2 O 3).The reactions were investigated with thermogravimetric measurements and the results discussed based on thermodynamic by: The thermogravimetric study was performed with a Cahn electronic microbalance.

The quartz crucible containing about mg sample powder was suspended in the hot zone of the furnace with a quartz string. The peak to peak noise of the thermobalance was about 10 Cited by: Tribology and Micromechanics of Chromium Nitride Based Multilayer Coatings on Soft and Hard Substrates Juergen M.

Lackner 1,*, Wolfgang Waldhauser 1, Lukasz Major 2 and Marcin Kot 3 1 JOANNEUM RESEARCH Forschungsgesellschaft mbH, Institute of Surface Technologies and Photonics, Functional Surfaces, Leobner Stra A Niklasdorf, Austria;Cited by: Thermogravimetric study of the scandium nitrate hexahydrate thermolysis and computer modeling of intermediate oxynitrates in order to replace edible oils by lower-cost non-edible plant oils.

Mechanical and tribological properties. The average hardness of monolithic chromium nitride coatings is approximately GPa (see Table 1), but the hardness of multilayered coatings is much lower due to the effect of the titanium layers. In fact the average hardness of these coatings is approximately by: Ammonolysis of metal amides M(NR2)n, where M = a group 4, 5, or 6 transition metal, M2(NMe2)6, where M = Mo, W, and metal hexamethyldisilylamides M(N(SiMe3)2)n, where M = Ti, V, Cr, Mn, Co, Cu, La, Y, and Sn have been carried out in hydrocarbon solvents.

The initially formed products are hydrocarbon-insoluble powders wherein the metal retains its original oxidation by: Chromium(III) nitride can be prepared by direct combination of chromium and nitrogen at °C: 2 Cr + N 2 → 2 CrN. It can also synthesize by Physical Vapour Deposition technique such as Cathodic arc al formula: CrN.

Physical vapour deposition (PVD) of chromium nitride and its alloys with aluminium are emerging as a good alter-native to other conventional surface treatments for tool pro-tection [5–8]. PVD Cr–N has good hardness and toughness, which allows deposition of films as thick as 20 m without significant performance loss.

La Metallurgia Italiana - n. 6 49 Attualità industriale Chromium nitrides effects on low temperature impact toughness and durability of duplex stainless steels forgings a cura di: G. Camicia, M. Longin, P. Ferro, F. Bonollo The chromium nitrides effects on duplex stainless steels low temperature impact toughness and durability were investigated.

It was found that the optimum conditions were nitriding in ammonia below K to form chromium nitride (CrN) and iron nitrides.

These gave excellent segregation of the chromium and. Results and discussion Proximate and ultimate analysis. The biomass used in this study are wood biomass (WB) and oat (O).

It can be seen, Table 1, that biomass contain more volatile matter than coal and sewage composition of the coal, Table 1, is given as a point of reference: % carbon content and a high value of biomass contained more volatile matter than coal Cited by:   Parabolic rate constants of the reaction of chromium with nitrogen gas under oxygen-free conditions have been determined over a range of temperature (–°C) and nitrogen pressure (– kPa).

The growth rate of the subnitride was measured by a thermogravimetric technique using a single specimen. Wagner's oxidation theory is used to calculate the self-diffusivity and intrinsic Cited by: 6. Chromium carbide (Cr-C) and chromium nitride (Cr-N) powders were compared with a chromium metal powder (Cr-metal) to evaluate their chemical stability in solution.

See more Chromium products. Chromium (atomic symbol: Cr, atomic number: 24) is a Block D, Group 6, Period 4 element with an atomic weight of The number of electrons in each of Chromium's shells is 2, 8, 13, 1 and its electron configuration is [Ar] 3d 5 4s 1.

Chromium was first discovered by Louis Nicolas Vauquelin in bides instead of non stable chromium carbides3,4. Moreover due to additions of nitride and carbide form-ing elements, the structure of the stabilized 17% Cr steels is “fully” ferritic at all temperatures.

This property has a ben-eficial effect on the oxidation resistance of those steels, due. A thermogravimetric method for the measurement of carbon, nitrogen, and oxygen in aluminum nitride is described.

Since carbon oxidation occurs at lower temperatures than the oxidation of the aluminum compounds, thermogravimetric analyses in the respective temperature regimes can yield measurement of the oxygen, nitrogen, and carbon by: Chromium nitride. Chromium nitride (CrN) Chromium mononitride. Chromium(III) nitride.

Parabolic rate constants of the reaction of chromium with nitrogen gas under oxygen-free conditions have been determined over a range of temperature ( C) and nitrogen pressure ( kPa).

The growth rate of the subnitride was measured by a thermogravimetric technique using a. All chromium nitride thin films were deposited on a silicon substrate, the discharge current and the argon flow being kept constant. The main purpose of the paper is to determine the influence of.

The thermogravimetric analysis study has confirmed that the increase in the degradation temperature of Benzoyl-treated SEFs (o C) at 60 minutes when compared with untreated fiber (o C).

The Scanning Electron Microscope (SEM) results have confirmed that the elimination of impurities from the fiber surface after chemical treatment.THE GROWTH OF CHROMIUM NITRIDE COATINGS. Chromium nitride films has been prepared by reactive magnetron sputtering using a mixture of Ar and N 2 gas.

Keeping constant the total pressure during the film deposition the ratio of N 2 to Ar has been varied from to to promote the growth of CrN films with different microstructure. The structural.Pressure-temperature-composition relations of the lower nitride of chromium, Cr2N, have been studied in detail over the temperature range °– °C by a thermogravimetric : Mansur Ziatdinov.