Study of the Geometrical Limitations Associated to the Metallic Part Manufacturing by the LMD Process

The effects of an applied strain tensor on the electrical resistivity of a manganite granular system are investigated using a simple approach describing the induced deformation in terms of the tilt angle between adjacent grains. The results obtained assuming the resistivity of each grain as given by a metallic part, coming from the inner grain, and a surface-related tunnel contribution, allow us to estimate appreciable resistivity variations even in the case of small deformation angles.

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Thermal Cycling Influence on the Transformation Characteristics of a Ni50Ti48Nb2 Shape Memory Alloy

Revista de Chimie ◽

10.37358/rc.17.5.5596 ◽

2017 ◽

Vol 68 (5) ◽

pp. 991-996

Author(s):

Ioana Arina Gherghescu ◽

Sorin Ciuca ◽

Gabriela Liliana Jicmon ◽

Ruxandra Elena Dumitrescu ◽

Mihai Branzei

Keyword(s):

Differential Scanning Calorimetry ◽

Shape Memory Alloy ◽

Thermal Cycling ◽

Shape Memory ◽

Critical Points ◽

Mechanical Stability ◽

Alloy Sample ◽

Scanning Calorimetry ◽

Metallic Part ◽

Two Samples

The alloy was chosen in order to obtain a shape memory alloy having a wider hysteresis than equiatomic NiTi, that involves a better thermo-mechanical stability. Two samples investigated by differential scanning calorimetry (DSC) were previously annealed at 800oC/12 h and, respectively, 900 �C/12 h followed by furnace cooling. These were afterwards submitted to thermal cycling. The thermal cycling of a Ni50Ti48Nb2 alloy sample previously annealed at 900 �C/12 h results in lower critical points and higher hysteresis values as compared to those of the sample annealed at 800�C/12h, also submitted to thermal cycling. Thus, annealing a metallic part made of such an alloy at 900� C/12 h followed by thermal cycling prior to putting it into service enhances its reliability.

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Corrosion Problems in Incinerators and Biomass-Fuel-Fired Boilers

International Journal of Corrosion ◽

10.1155/2014/505306 ◽

2014 ◽

Vol 2014 ◽

pp. 1-14 ◽

Cited By ~ 12

Author(s):

Deepa Mudgal ◽

Surendra Singh ◽

Satya Prakash

Keyword(s):

Similar Type ◽

Municipal Waste ◽

Biomass Fuel ◽

Corrosive Environment ◽

Biomedical Waste ◽

Waste Combustion ◽

Metallic Part ◽

Sodium And Potassium

Incinerators are widely used to burn the municipal waste, biowaste, wood, straw, and biomedical waste. Combustion of these types of waste results in generation of chlorides of sodium and potassium which may attack the metallic part of the incinerator. In biofuel-fired boilers, similar type of highly corrosive environment is present. Attempt has been made to review the corrosion problems and their solutions as per the available literature.

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PHOTOIONIZATION AND ELECTRONIC STRUCTURE OF HYDROGENATED LITHIUM CLUSTERS

Surface Review and Letters ◽

10.1142/s0218625x96000346 ◽

1996 ◽

Vol 03 (01) ◽

pp. 171-175 ◽

Cited By ~ 5

Author(s):

B. VEZIN ◽

PH. DUGOURD ◽

D. RAYANE ◽

M. BROYER

Keyword(s):

Electronic Structure ◽

Ionization Potential ◽

Alkali Halide ◽

Mixed Cluster ◽

Metallic Part ◽

Lithium Clusters

The ionization-potential measurements of Li n H m clusters with 3≤n≤11 and 0≤m≤6 are presented. Their evolution is dominated by the number of electrons which are delocalized in the cluster. The analysis is in favor of a segregation between a metallic part and an insulating part in the mixed cluster. By comparison with alkali-halide clusters results, the existence of possible cuboid structures is discussed.

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