Search results

Advanced Multi-Metallic SOFC Anode Development by Mechanical Alloying Route T.A.G.
Successive alloying with refractory metals is performed to the Cu-NiYSZ anode material aiming to free Cu at the precipitated state due to Cu low solubility in the metals.
Accordingly to X-ray analysis (Fig. 7), some compounds were formed after sintering of MA powder pellets submitted to high energy transfer conditions, as a result of C contamination from the container: ZrC and CuZrO3.
Ni peaks are further shifted due to refractory metals alloying while Cu peaks are not preserved.
Journal of Power Sources Vol. 185 (2008), p. 1262- 1266 [9] O.

By utilizing powder metallurgy (PM) one could benefit from available industrialized approaches for composite production and alloying routes.
Summarizing, the aim of both the chemical vapor infiltrated (CVI) Wf/W and the PM Wf/W development is a composite material with superior properties.
(ed.), SpringerMaterials - The Landolt-Börnstein Database, DOI: 10.1007/10551312_2793 (15.02.02) [10] ASTM Standard E407, 1999, “Standard Practice for Microetching Metals and Alloys”, ASTM International, West Conshohocken, PA, 1996 [11] ASTM Standard E112, 1996e3, “Standard Test Methods for Determining Average Grain Size”, ASTM International, West Conshohocken, PA, 1996 [12] W.
Schubert, Tungsten - Properties, Chemistry, Technology of the Element, Alloys and Chemical Compounds, Kluwer Academic/Plenum Publishers, 1999 [14] M.V.
Aguirre et al., Mechanical Behavior of W-Y2O3 and W-Ti Alloys from 25 °C to 1000 °C, Metallurgical and Materials Transactions A, 40 (2009) 2283-2290 [15] G.

This work aims at identifying the cause of failure of a helical gear [1, 7] in wind turbine in order to prevent or minimize the reoccurrence of similar failures in the future.
Since the heat treatment can greatly alter the mechanical and physical properties of metals and alloys, therefore it is the most important and widely used manufacturing processes.
This treatment allows producing a modified surface layer, consisting of an outer compound layer and an inner diffusion layer.
Nitriding is often applied to low-alloyed steels to “harden” the steel and to improve corrosion resistance.
This process provides several advantages for the alloys treated, such as high surface hardness, wear resistance, anti-galling, corrosion resistance.

Mickiewicza 30, Poland Keywords: High-alloy steel, biofuels, high temperature corrosion, kinetics.
The mechanism of this type of corrosion is not explained so far because combustion gases are very complex, containing in addition to carbon oxide, water vapor, nitrogen oxides, sulphur, alkali metal compounds as well as acetic and formic acids.
Thus, the aim of the present paper is to explain the role of acetic acid on the corrosion processes of X33CrNiMn23-8, X50CrMnNiNbN21-9 and X53CrMnNiN20-8 valve steels.
Mrowec: submitted to International Journal of High Temperature Materials and Processes (2010).

Nor tertiary compounds were detected at the In2O3/SnO2 interface, neither In or Sn in metallic state. 1.
In terms of atomic structure, the interface may be: (1) sharp and abrupt or (2) it may be washed out by interdiffusion and/or formation of new chemical compounds.
No tertiary compounds and metallic In/Sn species were detected at the In2O3/SnO2 interface.
Journal of Alloys and Compounds 371. 157-159 (2004)
Journal of Physics E: Scientific Instruments, Vol. 9, (1976) [16].

The C-C bonds mainly exist as sp2 and sp3 bonds, and the hybridized carbon composed by sp2 and sp3 bonds has very high hardness, as the same time the C-Cr compounds generally have higher hardness than N-Cr compounds.
Thus the hybridized carbon composed by sp2 and sp3 bonds and C-Cr compounds can form much microcrystal and cluster in the coatings, and these hard particles have function as dispersion strengthening.
This is because, on the one hand, the hybridized carbon composed by sp2 and sp3 bonds and C-Cr compounds has high hardness, on the other hand, fine periodicity thickness(see,Fig.2 (c)) can also increase the hardness.
Journal of the European Ceramic Society,1997,17(15-16):1929-1932
The Influence of Metal Alloyed on the Structure and Wear Properties of CrN Coatings[J].

This study aims to investigate the wear behavior of AA7075 alloy with the reinforcement of Silicon carbide (SiC) and Boron carbide (B4C) particles.
Aluminium 7075 (AA7075) Aluminium 7075 (AA7075) is an aluminum alloy with zinc as the primary alloying element.
Silicon Carbide (SiC) A hard chemical compound made of silicon and carbon, silicon carbide (SiC) is also referred to as carborundum.
Journal of Materials Research and Technology. 2016; 5:159-169.
Journal of Materials Processing Technology. 2003; 144:567-571.

Porous TiNi shape-memory alloy (TiNi SMA) bodies were produced from the (Ti+Ni) powder mixture by self-propagating high-temperature synthesis (SHS) method.
Introduction Titanium-nickel intermetallic compound is well known as one of representative shape memory alloys (SMA).
Aim of this study was to investigate a relationship between processing variables, pore structure and mechanical property.
Journal Title and Volume Number (to be inserted by the publisher) Fig. 3.

The NQR signals of urea, urotropine and sodium nitrite were detected by experiment at room temperature, and the signal spectra of the nitrogenous compounds with different weights were obtained.
Bodnya, Russian Physics Journal. 48 (2005), p. 978
Canet, Journal of Magnetic Resonance. 188 (2007), p. 275
Garroway, Journal of Magnetic Resonance. 151(2001), p. 228
Cerioni, Journal of Magnetic Resonance.194 (2008), p. 222

Additionally, AMMCs are simpler to make in any shape or size compared to standard aluminium alloys [2].
Shukla, A review of friction stir processing of aluminium alloys using different types of reinforcements, Int.
Journal of Composite Materials. 54 (2020), 1107-1117 [31] S.
Journal of Asian Ceramic Societies, 4 (2016), 209-218
Journal of Alloys and Compounds, 622 (2015) pp.725-733