Experimental study of boron nitride in a wide temperature interval

An experimental study of the friction of metals which have been coated with inorganic films by reaction with their surrounding atmosphere. The specimens are first cleaned at high temperature in vacuo and then heated in the selected reactive vapor. Many coatings will prevent seizure and give a fairly constant but high coefficient of friction up to high temperatures. Layer-lattice compounds such as MoS2, CrCl3, and TiI2 give much lower friction at all temperatures below those at which the film decomposes or evaporates (about 850 C for molybdenum disulphide). A film of boron nitride formed on boron shows a high intrinsic friction, but this can be reduced by certain vapors or by raising the temperature above about 800 C. Most of the experiments were performed with very light loads but the films are shown to be effective under kilogram loads. A simple indentation test capable of selecting lubricants under loads up to 12 tons is described. This shows that a film formed by heating stainless steel in CCl2F2 will lubricate at 400 C when the steel is deformed by over 50 per cent.

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Evaluation of Growth Front Velocity in Ultrastable Glasses of Indomethacin over a Wide Temperature Interval

The Journal of Physical Chemistry B ◽

10.1021/jp506782d ◽

2014 ◽

Vol 118 (36) ◽

pp. 10795-10801 ◽

Cited By ~ 38

Author(s):

Cristian Rodríguez-Tinoco ◽

Marta Gonzalez-Silveira ◽

Joan Ràfols-Ribé ◽

Aitor F. Lopeandía ◽

Maria Teresa Clavaguera-Mora ◽

...

Keyword(s):

Temperature Interval ◽

Growth Front ◽

Front Velocity ◽

Wide Temperature Interval

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Nanoparticle diffusion probing of the structure of water and aqueous organic solutions near a porous surface and in its bulk in a wide temperature interval

Russian Physics Journal ◽

10.1007/s11182-009-9212-9 ◽

2009 ◽

Vol 52 (2) ◽

pp. 119-126

Author(s):

V. V. Bryukhanov ◽

I. G. Samusev ◽

A. M. Ivanov ◽

N. A. Myslitskaya

Keyword(s):

Temperature Interval ◽

Porous Surface ◽

Structure Of Water ◽

Wide Temperature Interval ◽

Nanoparticle Diffusion ◽

Organic Solutions

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Production, Properties and Application of Ultrafine-Grained Titanium Alloys

Materials Science Forum ◽

10.4028/www.scientific.net/msf.838-839.294 ◽

2016 ◽

Vol 838-839 ◽

pp. 294-301 ◽

Cited By ~ 2

Author(s):

Sergey Zherebtsov ◽

Gennady Salishchev

Keyword(s):

Mechanical Properties ◽

Grain Size ◽

Titanium Alloys ◽

Structure Formation ◽

Temperature Interval ◽

Two Phase ◽

Homogeneous Microstructure ◽

Wide Temperature Interval ◽

Ultrafine Grained ◽

Kinetics Of

Some features ofstructure, way of production and mechanical properties of titanium andtwo-phase titanium alloys with ultrafine-grained (UFG) microstructure werediscussed. Various methods of UFG structure formation was considered andoptimal conditions for attaining of a homogeneous microstructure with thesmallest grain size were determined. The kinetics of microstructure evolutionin titanium and two-phase titanium alloys during large (severe) plasticdeformation in a wide temperature interval and the mechanisms of ultrafinegrain formation were analyzed. The influence of grain size on static mechanicalproperties was determined. Significantly reduced temperatures of superplasticforming of the UFG conditions were shown. Some examples of practical applicationsof the UFG two-phase titanium alloys were discussed.

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ChemInform Abstract: Dimerization Equilibrium Constant for the ClO Radical. State-of-the- Art Wide-Temperature-Interval Thermodynamics of Species Related to Ozone Depleting.

ChemInform ◽

10.1002/chin.199220011 ◽

2010 ◽

Vol 23 (20) ◽

pp. no-no

Author(s):

Z. SLANINA

Keyword(s):

Equilibrium Constant ◽

Temperature Interval ◽

State Of The Art ◽

Wide Temperature Interval ◽

Radical State

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Connection of thermopower, magnetothermopower with resistivity and magnetoresistance in manganites with Nd and Sm

EPJ Web of Conferences ◽

10.1051/epjconf/201818506014 ◽

2018 ◽

Vol 185 ◽

pp. 06014 ◽

Cited By ~ 1

Author(s):

Luidmila Koroleva ◽

Ivan Batashev ◽

Artem Morozov ◽

Anatolii Balbashov ◽

Henryk Szymczak ◽

...

Keyword(s):

Magnetic Field ◽

Curie Temperature ◽

Single Crystal ◽

Temperature Interval ◽

Impurity States ◽

Wide Temperature Interval ◽

Concentration Of Impurities

Thermopower, magnetothermopower resistivity and magnetoresistance of single crystal samples Re(1-x)SrxMnO3 (0 ≤ x ≤ 0.3, Re = Nd, Sm) were studied in wide temperature interval, included the Curie temperature TC. Giant maxima of resistivity and thermopower, very big negative magnetothermopower and magnetoresistance were found in TC region. So, a giant maximum of thermopower in TC was found, which suppressed by magnetic field. Simultaneous magnetic field destroys magneto-impurity states – ferrons as evidenced the maxima resistivity and magnetoresistance in TC Hence it follows that giant thermopower in manganites are produced by ferrons and its value is set by the quantity of impurities, that is the concentration of impurities and the volume of sample.

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