Investigation of the Element Diffusion in Friction Welded X53CrMnNiN219 and X45CrSi93 Steels

2014 ◽  
Vol 56 (4) ◽  
pp. 318-324
Author(s):  
Mehmet Uzkut ◽  
Bekir Sadık Ünlü ◽  
Mesut Yavuz ◽  
Mustafa Akdag
Keyword(s):  
Element Diffusion

THE INTERFACIAL THERMAL STABILITY AND ELEMENT DIFFUSION MECHANISM OF SiCf/TC17 COMPOSITE

2012 ◽  
Vol 48 (11) ◽  
pp. 1306 ◽  
Author(s):  
Xu ZHANG ◽  
Yumin WANG ◽  
Jiafeng LEI ◽  
Rui YANG
Keyword(s):  
Thermal Stability ◽  
Diffusion Mechanism ◽  
Element Diffusion

Probing the history of UHT metamorphism through rare earth element diffusion in zircon

2021 ◽  
Author(s):  
E. Blereau ◽  
C. Clark ◽  
P. D. Kinny ◽  
E. Sansom ◽  
R. J. M. Taylor ◽  
...  
Keyword(s):  
Rare Earth ◽  
Rare Earth Element ◽  
Earth Element ◽  
Element Diffusion ◽  
History Of ◽  
Uht Metamorphism

Study of the antibacterial function of enamel surface with Ag element diffusion

2008 ◽  
Vol 62 (2) ◽  
pp. 262-265 ◽  
Author(s):  
Weizhong Jiang ◽  
Ying Wang ◽  
Lixia Gu
Keyword(s):  
Enamel Surface ◽  
Element Diffusion

scholarly journals Oxidation Behavior of Multilayer Hard Coatings (TiCN/Al2O3/TiN) in Process of Recycling Coated Multicomponent Hardmetal Scrap

Materials ◽  
2018 ◽  
Vol 11 (10) ◽  
pp. 1796 ◽  
Author(s):  
Hai Kuang ◽  
Dunqiang Tan ◽  
Wen He ◽  
Zhiqiang Yi ◽  
Zhihang Zou ◽  
...  
Keyword(s):  
Oxidation Rate ◽  
Oxidation Behavior ◽  
Isothermal Oxidation ◽  
Hard Coatings ◽  
Hard Alloys ◽  
Al2o3 Layer ◽  
Good Oxidation Resistance ◽  
Element Diffusion ◽  
Negative Effect ◽  
Al2o3 Phase

The coating is one of the biggest problems in the recycling of coated multicomponent hardmetal scraps. The isothermal oxidation behavior of WC-Co multicomponent cemented carbide inserts with a TiCN/Al2O3/TiN hard coating in the recycling process was investigated. The oxidation rate slowed down as the protective coating blocked element diffusion. A rapid oxidation rate was obtained when they were milled into powders and isothermally oxidized at 900 °C. A rapid path for element diffusion was provided by the defects, which were promoted by stress, expansion, and gas volatilization. Both the TiN and TiCN layers were oxidized to a porous TiO2 scale, while the Al2O3 phase remained and the dense Al2O3 layer acted as a barrier for its good oxidation resistance. Pieces of the Al2O3 layer were obviously seen in the final oxides. This provides critical information to reduce the negative effect of coatings and improve the performance of recycled WC powders and hard alloys.

scholarly journals Effect of Particle Size on Microstructure and Element Diffusion at the Interface of Tungsten Carbide/High Strength Steel Composites

Materials ◽  
2019 ◽  
Vol 12 (24) ◽  
pp. 4164 ◽  
Author(s):  
Hongmei Zhang ◽  
Hongnan Li ◽  
Ling Yan ◽  
Chao Wang ◽  
Fangfang Ai ◽  
...  
Keyword(s):  
Particle Size ◽  
Tungsten Carbide ◽  
High Strength Steel ◽  
Average Particle Size ◽  
High Strength ◽  
Average Particle ◽  
Micro Hardness ◽  
Vacuum Sintering ◽  
Element Diffusion ◽  
Average Grain Size

The microstructure and micro-hardness of tungsten carbide/high strength steel (WC/HSS) composites with different particle sizes were analyzed by optical microscopy (OM), scanning electron microscopy (SEM), ultra-high temperature laser confocal microscopy (UTLCM) and micro-hardness testing. The composites were prepared by cold pressing and vacuum sintering. The results show that WC density tends to increase as the average grain size of WC decreases and the micro-hardness of WC increases with the decrease of WC particle size. The micro-hardness of WC near the bonding interface is higher than that in other regions. When the particle size of WC powder particles is 200 nm, a transition layer with a certain width is formed at the interface between WC and HSS, and the combination between the two materials is metallurgical. The iron element in the HSS matrix diffuses into the WC structure in contact with it, resulting in a fusion layer of a certain width, and the composite interface is relatively well bonded. When the average particle size of WC powder is 200 nm, W, Fe and Co elements significantly diffuse in the transition zone at the interface. With the increase of WC particle size, the trend of element diffusion decreases.

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