Study of Thermal Stability of Magnesium Alloys

Today, magnesium (Mg) alloys are recognized alternatives to iron and aluminum to reduce the weight of structural materials. This contribution was performed to provide information on the flammability of magnesium alloys through investigation of the ignition temperature of selected Mg alloys. The test was performed in a muffle furnace with dynamic heating program. Also were performed tests of chemical composition of studied specimens.

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The Influence of Ge on the Properties of Mg Alloys

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.647.72 ◽

2015 ◽

Vol 647 ◽

pp. 72-78 ◽

Cited By ~ 2

Author(s):

Jan Šerák ◽

Tomáš Kovalčík ◽

Dalibor Vojtěch ◽

Pavel Novák

Keyword(s):

Mechanical Properties ◽

Thermal Stability ◽

Ambient Temperature ◽

Magnesium Alloys ◽

Elevated Temperatures ◽

Small Extent ◽

Mg Alloys ◽

Alloying Elements ◽

Combustion Engines ◽

Thermal Stability Of

Germanium is an element which is used in metallurgy in a very small extent. Much more significant is its use as a semiconductor material. Most of magnesium alloys are usually used for applications at ambient temperature. The significant decrease in mechanical properties is observed already at the temperature higher than 150°C. This is the reason for the effort to prepare a new low-priced magnesium based alloys with improved mechanical properties at elevated temperatures, e.g. for components of combustion engines. Therefore, new unconventional alloying elements are studied for increase the thermal stability of magnesium alloys. The effect of germanium on the microstructure and mechanical properties of Mg-Ge alloys at ambient and elevated temperatures was studied in this paper.

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Heterogeneity of the chemical composition and thermal stability of particulate organic matter in French forest soils

Geoderma ◽

10.1016/j.geoderma.2019.02.008 ◽

2019 ◽

Vol 342 ◽

pp. 65-74 ◽

Cited By ~ 4

Author(s):

Laure Soucémarianadin ◽

Lauric Cécillon ◽

Claire Chenu ◽

François Baudin ◽

Manuel Nicolas ◽

...

Keyword(s):

Thermal Stability ◽

Organic Matter ◽

Chemical Composition ◽

Particulate Organic Matter ◽

Forest Soils ◽

Thermal Stability Of

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Influences of Bath Chemistry and Plating Variables on Characteristics of Electroless Ni–P Films on Si Wafers from Alkaline Citrate Solutions

Journal of Nanomaterials ◽

10.1155/2018/1817542 ◽

2018 ◽

Vol 2018 ◽

pp. 1-11 ◽

Cited By ~ 1

Author(s):

Naiming Miao ◽

Jinjin Jiang ◽

Wangping Wu

Keyword(s):

Thermal Stability ◽

Chemical Composition ◽

Deposition Rate ◽

Electroless Nickel ◽

Monocrystalline Silicon ◽

P Content ◽

Almost All ◽

P Type ◽

Electroless Ni ◽

Thermal Stability Of

Electroless nickel–phosphorus (Ni–P) films were produced on the surface of p-type monocrystalline silicon in the alkaline citrate solutions. The influences of bath chemistry and plating variables on the chemical composition, deposition rate, morphology, and thermal stability of electroless Ni–P films on silicon wafers were studied. The as-deposited Ni–P films were almost all medium- and high-P deposits. The concentrations of Ni2+ and citric ions influenced the deposition rate of the films but did not affect P content in the deposits. With increasing H2PO2− content, the P content and deposition rate were steadily increased. The pH and plating temperature had a significant effect on the chemical composition and the deposition rate of the films. The thermal stability of the medium-P film was better than that of the high-P deposit. At the same time, the proposed mechanism of Ni–P films on monocrystalline silicon substrates in the alkaline bath solution was discussed and addressed.

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Thermal Stability of Mechanical Properties of Copper after Equal-Channel Angular Pressing

Materials Science Forum ◽

10.4028/www.scientific.net/msf.584-586.960 ◽

2008 ◽

Vol 584-586 ◽

pp. 960-965 ◽

Cited By ~ 1

Author(s):

Tamara Kravchenko ◽

Alexander Korshunov ◽

Natalia Zhdanova ◽

Lev Polyakov ◽

Irina Kaganova

Keyword(s):

Mechanical Properties ◽

Thermal Stability ◽

Tensile Strength ◽

Chemical Composition ◽

Yield Strength ◽

Equal Channel Angular Pressing ◽

Angular Pressing ◽

Different Temperatures ◽

Thermal Stability Of

Annealed oxygen-free and tough-pitch copper samples have been processed by equalchannel angular pressing (ECAP) by route BC. The samples included 8 x 8 mm section pieces and a 40 mm diameter bar. Thermal stability was assessed based on the changes in the standard mechanical properties (conventional yield strength, tensile strength, elongation, proportional elongation and contraction) after annealing at different temperatures for 1 hour. Thermal stability of the same grade of material has been found to be different for different batches and to depend on the structural conditions of deformed material. The zone of thermal stability for copper of the two grades of interest does not depend on the material’s chemical composition.

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Crystallization of Ni-Cr-Si-B and Ni-Cr-Fe-Si-B Amorphous Alloys

Solid State Phenomena ◽

10.4028/www.scientific.net/ssp.216.35 ◽

2014 ◽

Vol 216 ◽

pp. 35-38 ◽

Cited By ~ 1

Author(s):

Cosmin Codrean ◽

Dragoş Buzdugan ◽

Ramona Lǎzar ◽

Viorel Aurel Şerban ◽

Ion Mitelea

Keyword(s):

Thermal Stability ◽

Chemical Composition ◽

Rapid Solidification ◽

Amorphous Alloys ◽

Structural Characteristics ◽

Glass Forming Ability ◽

Glass Forming ◽

Melting Temperatures ◽

Dta Analysis ◽

Thermal Stability Of

Ni based amorphous alloys with Si and B, which can also, contains Fe and Cr, prepared by rapid solidification, have low melting temperatures. This fact increases their susceptibility to be joined by welding and brazing. The glass forming ability (GFA) is conditioned also by the crystallization delay, due to certain chemical composition of the alloys. The thermal stability of these alloys was revealed by DTA analysis and structural characteristics were investigated by XRD. Applying an annealing at temperatures between 420°C and 540°C, with 30 minutes maintaining time, allowed the investigation of phase occurred during the crystallization and the estimation of the crystalline grains dimensions.

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Growth and Stability of MgO/NiO Multilayered Films on Single Crystal NiO(100)

MRS Proceedings ◽

10.1557/proc-401-507 ◽

1995 ◽

Vol 401 ◽

Cited By ~ 3

Author(s):

S. Imaduddin ◽

R. J. Lad

Keyword(s):

Thermal Stability ◽

Chemical Composition ◽

Chemical Analysis ◽

Single Crystal ◽

Lattice Mismatch ◽

Composition Studies ◽

Single Crystal Substrate ◽

Multilayered Films ◽

Crystal Substrate ◽

Thermal Stability Of

AbstractThe less than 1% lattice mismatch between MgO and NiO makes them ideal candidates for investigating the growth and stability of multilayered oxide films. Ultra-thin multilayers composed of alternating films of MgO and NiO were deposited onto a stoichiometric NiO(100) single crystal substrate at 250°C by evaporating Mg and Ni in 5×10−7 Torr of O2, respectively. The structure of these multilayers was determined using LEED. Reactivity and chemical composition studies of the MgO/NiO interfaces were carried out using XPS and UPS. The MgO/NiO multilayers grow epitaxially on NiO(100), as evidenced by LEED. XPS and UPS analysis indicates attenuation of the NiO or MgO peaks during growth which is consistent with discrete layering. Chemical analysis also reveals negligible intermixing of the MgO and NiO layers during deposition. Results pertaining to the thermal stability of the multilayers show that UHV annealing above 750°C results in significant diffusion of MgO into the NiO(100) substrate.

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Effect of Mg Content on Thermal Stability of β-Tricalcium Phosphate Ceramics

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.604.192 ◽

2014 ◽

Vol 604 ◽

pp. 192-195 ◽

Cited By ~ 3

Author(s):

Kristine Salma-Ancane ◽

Liga Stipniece ◽

Zilgma Irbe ◽

Marina Sokolova ◽

Guna Krieke ◽

...

Keyword(s):

Thermal Stability ◽

Chemical Composition ◽

Tricalcium Phosphate ◽

Chemical Properties ◽

Precipitation Method ◽

Sintering Behavior ◽

Remarkable Effect ◽

Mg Content ◽

Thermal Stability Of

β-Tricalcium phosphate bioceramics with small, close to bone-like amounts of Mg were obtained by modified precipitation method and following sintering. The effect of small amounts of Mg on the thermal stability, microstructure and sintering behavior of β-tricalcium phosphate bioceramics was evaluated. Addition of small amounts of Mg, can induce a remarkable effect on the physic-chemical properties of β-TCP and therefore the chemical composition of the starting materials should be controlled.

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