A Comparison of the Structural, Mechanical, and Corrosion Properties of Hybrid Coating Systems Based on Graphene and Silicon Nitride Thin Film Deposited on Titanium Alloy Surfaces in Two Different Compositions

2016 ◽  
Keyword(s):  
Thin Film ◽  
Titanium Alloy ◽  
Silicon Nitride ◽  
Hybrid Coating ◽  
Corrosion Properties ◽  
Mechanical And Corrosion Properties

Mechanical and Corrosion Properties of VT6 Titanium Alloy after Irradiation with Helium and Aluminum Lons

2021 ◽  
Vol 887 ◽  
pp. 229-234
Author(s):  
Viktor V. Ovchinnikov ◽  
Svetlana V. Yakutina ◽  
Nadezhda V. Uchevatkina
Keyword(s):  
Titanium Alloy ◽  
Ion Irradiation ◽  
Structural Phase ◽  
High Dose ◽  
Corrosion Properties ◽  
Average Grain Size ◽  
Aluminum Implantation ◽  
Modified Surface ◽  
Mechanical And Corrosion Properties ◽  
Mechanical Properties And Corrosion

The effect of high-dose aluminum implantation on the structural-phase state of the surface layer of titanium alloy VT6 with a fine structure (average grain size 2.3 μm) on the mechanical and corrosion properties has been investigated. It is shown that, as a result of ion irradiation, polyphase implanted layers based on α-titanium grains are formed, containing an intermetallic Ti3Al phase along the grain boundaries of α-titanium. The modified surface layers are characterized by improved mechanical properties and corrosion resistance. The noted effect is enhanced by the use of preliminary helium implantation with a dose of 1.3 × 1017 ion / cm2.

Influence of Multiaxial Cryoforging on Microstructural, Mechanical, and Corrosion Properties of Copper-Titanium Alloy

2019 ◽  
Vol 28 (12) ◽  
pp. 7629-7641
Author(s):  
S. Ramesh ◽  
H. Shivananda Nayaka ◽  
Sandeep Sahu ◽  
K. R. Gopi ◽  
M. J. Shivaram ◽  
...  
Keyword(s):  
Titanium Alloy ◽  
Corrosion Properties ◽  
Mechanical And Corrosion Properties

Study of the Formation of Long Period Stacking Ordered Phases in Sputtered Thin Film Mg-Gd-Zn Alloys

2017 ◽  
Author(s):  
Sergey Yarmolenko ◽  
Kevin Galdamez ◽  
Sudheer Neralla ◽  
Zhigang Xu ◽  
Devdas Pai ◽  
...  
Keyword(s):  
Thin Film ◽  
Deposition Temperature ◽  
Mg Alloys ◽  
Alloying Elements ◽  
Crystallographic Structure ◽  
Corrosion Properties ◽  
Long Period ◽  
Ordered Phases ◽  
Mechanical And Corrosion Properties ◽  
Structure Patterns

Formation of long-period stacking ordered (LPSO) phases can significantly improve mechanical and corrosion properties of Mg-alloys. Typically LPSO phases can be formed by quick solidification of Mg-alloys having at least two alloying elements with atomic radii higher and lower than that of Mg. Stability of LPSO phases greatly depend on amounts and ratio of alloying elements. We report formation of thin film LPSO structures produced by co-sputtering of magnesium with zinc and gadolinium having less than 10% of alloying elements. This method allows controlling the ratio of the elements in composition, deposition temperature and orientation of thin films. Pure Mg, Zn and Gd films and their alloys deposited at temperatures below 200°C have HCP Mg-based crystallographic structure with exclusively basal orientation. LPSO phases and their stacking period were detected by observation of laminar structure patterns in low-angle x-ray reflectometry scans. The study of effects of elemental composition, deposition temperature and post-annealing of room temperature-deposited films on the formation of LPSO phase showed that the co-sputtering method can be very useful and efficient for the screening of new LPSO phases without the considerable expense preparation of bulk alloy preparation.

On the defects of enamel coatings

2019 ◽  
pp. 145-150
Author(s):  
T. O. Soshina ◽  
V. R. Mukhamadyarovа
Keyword(s):  
Heat Treatment ◽  
Surface Tension ◽  
Electron Microscope ◽  
Enamel Coating ◽  
Surface Defects ◽  
Linear Expansion ◽  
Corrosion Properties ◽  
Treatment Conditions ◽  
Mechanical And Corrosion Properties ◽  
Coefficient Of Linear Expansion

The defects destroy the integrity of the enamel, and the paper examines the influence of the physical-mechanical and corrosion properties of frits and heat treatment on the defectiveness of the enamel coating. The surface defects were scanned by electron microscope. It has been established that the defectiveness of enamel coatings depends on the melting index, temperature coefficient of linear expansion, surface tension of the frits, and heat treatment conditions. When burning rate of the enamel coating decreases, the fine-meshed structure of the enamel changes, and the size of the defects decreases.

Low-Temperature Formation of SiNx Gate Insulator for Thin-Film Transistor Using CAT-CVD Method

1998 ◽  
Vol 508 ◽  
Author(s):  
A. Izumi ◽  
T. Ichise ◽  
H. Matsumura
Keyword(s):  
Thin Film ◽  
Chemical Vapor Deposition ◽  
Silicon Nitride ◽  
Vapor Deposition ◽  
Thin Film Transistors ◽  
Chemical Vapor ◽  
State Density ◽  
Gate Insulator ◽  
Catalytic Chemical Vapor Deposition ◽  
Silicon Nitride Films

AbstractSilicon nitride films prepared by low temperatures are widely applicable as gate insulator films of thin film transistors of liquid crystal displays. In this work, silicon nitride films are formed around 300 °C by deposition and direct nitridation methods in a catalytic chemical vapor deposition system. The properties of the silicon nitride films are investigated. It is found that, 1) the breakdown electric field is over 9MV/cm, 2) the surface state density is about 1011cm−2eV−1 are observed in the deposition films. These result shows the usefulness of the catalytic chemical vapor deposition silicon nitride films as gate insulator material for thin film transistors.

Sign in / Sign up

Export Citation Format

Share Document