Structural characteristics and thermal stability of Al–5.7Cr–2.5Fe–1.3Ti alloy produced by powder metallurgy

2009 ◽  
Vol 475 (1-2) ◽  
pp. 151-156 ◽  
Author(s):  
D. Vojtěch ◽  
A. Michalcová ◽  
J. Pilch ◽  
P. Šittner ◽  
J. Šerák ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Powder Metallurgy ◽  
Structural Characteristics ◽  
Thermal Stability Of

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

2014 ◽  
Vol 216 ◽  
pp. 35-38 ◽  
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.

Thermal stability of copper-niobium composites produced by the powder metallurgy method

1990 ◽  
Vol 29 (7) ◽  
pp. 575-579 ◽  
Author(s):  
V. A. Bliznyuk ◽  
I. A. Kiyanskii ◽  
I. S. Dukhovnyi ◽  
V. P. Oleshko ◽  
G. V. Berdichevskii
Keyword(s):  
Thermal Stability ◽  
Powder Metallurgy ◽  
Powder Metallurgy Method ◽  
Thermal Stability Of

Thermal Stability of Zone Melting p-Type (Bi, Sb)2Te3 Ingots and Comparison with the Corresponding Powder Metallurgy Samples

2018 ◽  
Vol 47 (7) ◽  
pp. 4038-4046 ◽  
Author(s):  
Chengpeng Jiang ◽  
Xi’an Fan ◽  
Jie Hu ◽  
Bo Feng ◽  
Qiusheng Xiang ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Powder Metallurgy ◽  
Zone Melting ◽  
P Type ◽  
Thermal Stability Of

Structural characteristics and thermal stability of bimetallic Cu-Ru nanocluster

2009 ◽  
Vol 6 (12) ◽  
pp. 1155 ◽  
Author(s):  
H.B. Liu ◽  
G. Carbajal De La Torre ◽  
E. Sosa ◽  
M.A. Espinosa Medina
Keyword(s):  
Thermal Stability ◽  
Structural Characteristics ◽  
Thermal Stability Of

Thermal stability of an composite processed by powder metallurgy

1997 ◽  
Vol 5 (7) ◽  
pp. 515-524 ◽  
Author(s):  
M. Lieblich ◽  
J.L. González-Carrasco ◽  
G. Caruana
Keyword(s):  
Thermal Stability ◽  
Powder Metallurgy ◽  
Thermal Stability Of

scholarly journals Effect of the Addition of Biobased Polyols on the Thermal Stability and Flame Retardancy of Polyurethane and Poly(Urea)Urethane Elastomers

Materials ◽  
2021 ◽  
Vol 14 (7) ◽  
pp. 1805
Author(s):  
Kamila Mizera ◽  
Kamila Sałasińska ◽  
Joanna Ryszkowska ◽  
Maria Kurańska ◽  
Rafał Kozera
Keyword(s):  
Thermal Stability ◽  
Flame Retardancy ◽  
Fossil Fuels ◽  
Structural Characteristics ◽  
Cone Calorimetry ◽  
Current Trends ◽  
Ft Ir ◽  
The Impact ◽  
Thermal Stability Of ◽  
Ft Ir Spectroscopy

Due to the current trends in sustainable development and the reduction in the use of fossil fuels (Green Deal strategy and the circular economy), and thus, the increased interest of the polyurethane industry in polyols derived from renewable sources, it is important to study the impact of these polyols on the flammability of new bioelastomers. The goal of this study was to check the influence of biobased polyols, such as tall oil (TO)-based polyols, soybean oil (SO)-based polyol, and rapeseed oil (RO)-based polyol, on the reduction in the burning and fume emissions of polyurethane and poly(urea)urethane elastomers (EPURs and EPUURs). The thermal stability of these materials was tested using thermogravimetric analysis (TGA). In turn, the flame retardancy and smoke emissions were checked using a cone calorimetry test. The released gases were identified using TGA coupled with Fourier transform infrared (FT-IR) spectroscopy (TGA/FT-IR). Moreover, the morphological and structural characteristics of the char residues were characterized using FT-IR and scanning electron microscopy (SEM) with energy-dispersive spectroscopy (EDS). The obtained data were compared to the results received for elastomers produced with petroleum substrates. The addition of biobased polyols led to a reduction in the burning as a result of the formation of char, especially RO polyol. Moreover, the TO and RO polyols increased the thermal stability of the elastomers.

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