scholarly journals Comparison of the Microstructural Characteristics and Electrical Properties of Thermally Sprayed Al2O3 Coatings from Aqueous Suspensions and Feedstock Powders

2012 ◽  
Vol 21 (3-4) ◽  
pp. 480-488 ◽  
Author(s):  
Filofteia-Laura Toma ◽  
Lutz-Michael Berger ◽  
Stefan Scheitz ◽  
Stefan Langner ◽  
Conny Rödel ◽  
...  
Keyword(s):  
Electrical Properties ◽  
Microstructural Characteristics ◽  
Aqueous Suspensions ◽  
Thermally Sprayed

Electrical Properties of Half Heusler Coatings Depending on Spray Process

2021 ◽  
Author(s):  
Geoffrey Darut ◽  
Axel Portebois ◽  
Ludovic Vitu ◽  
Marie Pierre Planche ◽  
Hanlin Liao ◽  
...  
Keyword(s):  
Mechanical Property ◽  
Electrical Properties ◽  
Practical Interest ◽  
Coating Properties ◽  
Spray Process ◽  
Coating Composition ◽  
Sprayed Coating ◽  
Plasma Sprayed ◽  
P Type ◽  
Thermally Sprayed

Abstract Microstructure and physicochemical properties of a thermally sprayed coating depend on the dynamics of the particles interacting with the spray jet. This is especially the case for electrical properties. In this study, different spraying processes were used to spray p-type and n-type half-Heusler powders. Thermoelectric powders, Hf20Zr75Ti05CoSb80Sn20 (p-type) and Hf60Zr40NiSn98Sb02 (n-type), were selected due to their interesting electrical properties. The spray processes were evaluated based on coating composition and mechanical property measurements. The only coatings of practical interest were those that were plasma sprayed and they were examined in detail to assess the effect of process parameters on coating properties.

Correlation Between Electrical Properties and Composition / Microstructure of Si-C-N Ceramics

1997 ◽  
Vol 500 ◽  
Author(s):  
C. Haluschka ◽  
C. Engel ◽  
R. Riedel ◽  
H.-J. Kleebe ◽  
R. Franke
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Raman Spectroscopy ◽  
Chemical Composition ◽  
High Resolution ◽  
Electrical Properties ◽  
Microstructural Characteristics ◽  
X Ray ◽  
Transmission Electron ◽  
X Ray Absorption

ABSTRACTIn this paper we report on the measurement of electrical properties of multielement ceramics in the ternary Si-C-N system using the impedance spectroscopy. The results were correlated to the chemical composition, the hybridization state and the microstructural characteristics investigated by chemical analysis, X-Ray absorption near edge spectroscopy (XANES), Raman Spectroscopy, high resolution transmission electron microscopy (HRTEM) and X-Ray powder diffraction (XRD).

Investigation on Microstructural Characteristics and Mechanical Properties of Thermally Sprayed Fe-Base Composites Reinforced with Different Ceramic Particulates

2021 ◽  
Author(s):  
Fardad Azarmi ◽  
X.W. Tangpong
Keyword(s):  
Amorphous Structure ◽  
The Other ◽  
Microstructural Characteristics ◽  
Microstructural Observation ◽  
Steel Coating ◽  
Two Samples ◽  
Morphology And Structure ◽  
Detonation Gun ◽  
Thermally Sprayed ◽  
Spraying Process

Abstract Three different coatings were deposited using the Detonation Gun Spraying (DGS) technology from steel powders alone; and steel powers mixed with Fe3C and SiC particles; respectively. The microstructural characteristics of these coatings were examined and the hardness of each type of coating was studied. The morphology and structure of the feedstock powders were affected by the exposure to high temperature during the spraying process and rapid solidification of steel powders that resulted in the formation of an amorphous structure. The unreinforced steel coating had the highest hardness among the three types of coatings; possibly due to a higher degree of amorphization in the coating compared to the other two samples. The microstructural observation confirmed the formation of dense coatings with a layered structure with good connectivity between layers with minimum defects and porosities in the interfacial regions.

Comparative Study of the Electrical Properties and Characteristics of Thermally Sprayed Alumina and Spinel Coatings

2010 ◽  
Vol 20 (1-2) ◽  
pp. 195-204 ◽  
Author(s):  
Filofteia-Laura Toma ◽  
Stefan Scheitz ◽  
Lutz-Michael Berger ◽  
Viktar Sauchuk ◽  
Mihails Kusnezoff ◽  
...  
Keyword(s):  
Electrical Properties ◽  
Comparative Study ◽  
Thermally Sprayed

Microstructural characteristics and nonequilibrium core-shell phase in (PbxSr1−x)TiO3materials and their electrical properties

2000 ◽  
Vol 241 (1) ◽  
pp. 25-34 ◽  
Author(s):  
Ping-Hong Chen ◽  
Chen-Chia Chou ◽  
Hsiu-Fung Cheng ◽  
Chen-Ti Hu ◽  
I-Nan Lin
Keyword(s):  
Electrical Properties ◽  
Core Shell ◽  
Microstructural Characteristics

Effects of Al Concentration on Microstructural Characteristics and Electrical Properties of Al-Doped ZnO Thin Films on Si Substrates by Atomic Layer Deposition

2012 ◽  
Vol 12 (7) ◽  
pp. 5598-5603 ◽  
Author(s):  
Ju Ho Lee ◽  
Jae-Won Lee ◽  
Sooyeon Hwang ◽  
Sang Yun Kim ◽  
Hyung Koun Cho ◽  
...  
Keyword(s):  
Thin Films ◽  
Electrical Properties ◽  
Atomic Layer Deposition ◽  
Atomic Layer ◽  
Zno Thin Films ◽  
Microstructural Characteristics ◽  
Si Substrates ◽  
Layer Deposition ◽  
Doped Zno

Electrical properties and microstructural characteristics of nonstoichiometric CaCu3xTi4O12 ceramics

2009 ◽  
Vol 469 (1-2) ◽  
pp. 529-534 ◽  
Author(s):  
Laijun Liu ◽  
Huiqing Fan ◽  
Xiuli Chen ◽  
Pinyang Fang
Keyword(s):  
Electrical Properties ◽  
Microstructural Characteristics

Electrical Properties of Thermally Sprayed Ni- and Ni20Cr-Based Resistors

2008 ◽  
Vol 17 (3) ◽  
pp. 385-394 ◽  
Author(s):  
Maria Prudenziati ◽  
Magdalena Lassinantti Gualtieri
Keyword(s):  
Electrical Properties ◽  
Thermally Sprayed
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