Enhancement of bonding strength between lead wires and ceramic matrix of metal ceramic heater

2019 ◽  
Vol 16 (6) ◽  
pp. 2245-2253
Author(s):  
Feng Zhu ◽  
Huachen Liu ◽  
Baijun Yan ◽  
Tengfei Deng
Keyword(s):  
Bonding Strength ◽  
Ceramic Matrix ◽  
Metal Ceramic ◽  
Ceramic Heater

scholarly journals Oxidative photo-catalytic destruction of eosine with the application of iron-contalning metal-ceramic composites with additive complex-forming reagents

2019 ◽  
Vol 60 (11) ◽  
pp. 21-30
Author(s):  
Anna А. Damzina ◽  
◽  
Lidia N. Skvortsova ◽  
Konstantin A. Bolgaru ◽  
◽  
...  
Keyword(s):  
Tartaric Acid ◽  
Diffraction Method ◽  
Ceramic Matrix ◽  
Homogeneous System ◽  
Ceramic Composites ◽  
Acid Sites ◽  
Complexing Agents ◽  
Oxidative Destruction ◽  
Indicator Method ◽  
Metal Ceramic

Iron-containing metal-ceramic composites based on nitrogen and sialon nitrides, obtained by the method of self-propagated synthesis were studied in the process of photocatalytic oxidative destruction of eosin. The phase composition of the samples was established by the X-ray diffraction method. It was shown that, along with the main phases, the ceramic matrix of materials contains the phases of semiconductors: (SiC, TiN). The indicator method of Hammet and Tanabe assessed the surface acid-base centers of the composites. It was established that a large sorption of the dye is characteristic of samples based on silicon nitride and sialon and is associated with the participation of active Brensted acid sites. The photocatalytic activity of iron-containing composites was studied in the presence of H2O2 (photo-Fenton system), H2O2 and EDTA (peroxide-ferriccomplexon system), H2O2 and tartaric acid (peroxide-ferritartrate system). It was shown that the degree of oxidative destruction of eosin is significantly higher with the participation of Fe(II, III) complexes with EDTA and tartaric acid, than Fe(II, III) aquacomplexes in the photo-Feton system. The high activity of composites containing the semiconductor phase of titanium nitride (TiN) is due to the combination of homogeneous and heterogeneous catalysis with the participation of the ceramic matrix. The introduction of complexing agents shifts the optimal acidity (pH 2-4) for a homogeneous system of photo-Fenton with the participation of iron(II, III) aqua complexes in the weakly acidic region (pH 4-7) and leads to almost complete destruction of the dye in the peroxide-tartrate system.

scholarly journals Thermal analysis of metal-ceramic bonding using finite element method

2014 ◽  
Vol 3 (2) ◽  
pp. 216 ◽  
Author(s):  
S. Gopinath ◽  
R Sabarish ◽  
R. Sasidharan
Keyword(s):  
Finite Element ◽  
Thermal Expansion ◽  
Thermal Stress ◽  
Bonding Strength ◽  
Coefficient Of Thermal Expansion ◽  
Linear Thermal Expansion ◽  
Processing Temperature ◽  
Element Analysis ◽  
Metal Ceramic ◽  
The Difference

This paper reports a finite element study of effect of bonding strength between metal and ceramic. The bonding strength is evaluated with different processing temperature and holding time. The difference between the coefficients of linear thermal expansion (CTEs) of the metal and ceramic induces thermal stress at the interface. The mismatch thermal stress at the interface region plays an important role in improving bonding strength. Hence, it is essential to evaluate the interface bonding in metal-ceramics joints. The Al/SiC bonding was modeled and analyzed using finite element analysis in ANSYS (v.10). Keywords: Bonding Strength, Coefficient of Thermal Expansion, Thermal Stress, Interface, Al/Sic, FEA.

Effect of Sintering Aids Sorts on Properties of Prepared Al2O3-Al Cermet

2018 ◽  
Vol 281 ◽  
pp. 297-302 ◽  
Author(s):  
Rui Hua Wang ◽  
Xiao Bo Bai ◽  
Xiao Dong Jiang ◽  
Deng Liang Yi ◽  
Fang Wang ◽  
...  
Keyword(s):  
Powder Metallurgy ◽  
Bonding Strength ◽  
Sintered Density ◽  
Surface Hardness ◽  
Ceramic Materials ◽  
Alumina Powder ◽  
Powder Metallurgy Method ◽  
Sintering Aids ◽  
Metal Ceramic ◽  
Better Than

Cermet while maintaining the excellent properties of ceramic materials, but also have the advantages of a metal material, is an important new engineering materials. In this paper, Al-Al2O3 cermet is prepared adding different sintering aids via the powder metallurgy method to study the properties of Al-Al2O3 cermet. The conclusions are shown the adding sintering aids can significantly improve the sintered density of Al-Al2O3 cermet. The sintering aiding effect of adding MgO is better than that of SiO2 and Y2O3, and the hardness and the strength of the sample are higher than those of samples with SiO2 and Y2O3, and the densification degree of Al-Al2O3 metal ceramic material is the best, the relative density is 94.8%, the surface hardness is 824HV. The flatness of the surface of the sample adding MgO shows that the bonding strength between aluminum powder and alumina powder is high. The prepared Al-Al2O3 cermet adding different sintering aids have higher density and fewer pores in the microstructure the prepared Al-Al2O3 cermet adding sintering aids has a package structure.

EFFECT OF HIGH ENERGY MILLING ON THE MICROSTRUCTURE OF AL2O3-10%FE METAL CERAMIC MATRIX COMPOSIT

2019 ◽  
Author(s):  
Rayanne Samara De sousa Reinaldo ◽  
FRANCINÉ ALVES COSTA ◽  
Cleber Lourenço ◽  
Rafael Alexandre Raimundo ◽  
Uilame Umbelino Gomes
Keyword(s):  
Ceramic Matrix ◽  
High Energy ◽  
High Energy Milling ◽  
Metal Ceramic

Effect of pretreatments on the metal–ceramic bonding strength of a Pd–Ag alloy

2014 ◽  
Vol 42 (3) ◽  
pp. 319-328 ◽  
Author(s):  
Bo-hua Li ◽  
Jian-tao Ye ◽  
Juan-kun Liao ◽  
Pei-lin Zhuang ◽  
Yi-ping Zhang ◽  
...  
Keyword(s):  
Bonding Strength ◽  
Metal Ceramic

A Study on Metal-Ceramic Thermal Expansion Compatibility

2014 ◽  
Vol 216 ◽  
pp. 85-90
Author(s):  
Marian Miculescu ◽  
Mihai Branzei ◽  
Florin Miculescu ◽  
Daniela Meghea ◽  
Marin Bane
Keyword(s):  
Thermal Expansion ◽  
Bonding Strength ◽  
Linear Thermal Expansion ◽  
Metal Bonding ◽  
Thermal Expansion Coefficients ◽  
Metal Ceramic ◽  
Thermal Compatibility ◽  
Expansion Coefficients ◽  
The Difference ◽  
Dental Applications

Push rod method for determining linear thermal expansion using vertical differential dilatometer was used in the study of the thermal compatibility of metal-ceramic systems for dental applications. The purpose of this study consisted in evaluating the effectiveness of dental coating by determining the ceramic metal bonding strength of metal-ceramic couples (Ni-Cr and Co-Cr alloy coated with dental ceramic) and correlation with the difference of linear thermal expansion coefficients of metals and ceramics.

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