Effects of On-Time on Microstructure and Corrosion Resistance of Pulse-Micro-Arc Oxidation Coatings Formed on Titanium Alloy

2013 ◽  
Vol 845 ◽  
pp. 735-739
Author(s):  
Yen Shou Chen ◽  
Yao Yang Tsai
Keyword(s):  
Corrosion Resistance ◽  
Titanium Alloy ◽  
Titanium Dioxide ◽  
Manufacturing Process ◽  
Titanium Substrate ◽  
New Method ◽  
Manufacturing Processes ◽  
Micro Arc Oxidation ◽  
Superior Level

Titanium dioxide (TiO2) has widely been applied in various fields of industry and technology. To improve the corrosion resistance of TiO2, many manufacturing processes have been researched. MAO is a new method of the TiO2 manufacturing process, of which titanium dioxide is coated on titanium substrate. According to electrochemistry researches, there is a more superior level for Pulse-MAO than traditional MAO. Parameters of on-time were significant in the Pulse-MAO process. The results show that on-time affects reactant shape, morphologies, thickness of films, and corrosion resistance. When on-time increased, the size of reactants was bigger and the shape of reactants was changed from sphere to lump. Meanwhile, the corrosion resistance and thickness of the film increased.

Study on Properties of Al2TiO5 Coating on Ti-6Al-4V Titanium Alloy

2013 ◽  
Vol 575-576 ◽  
pp. 348-351
Author(s):  
Nian Suo Xie ◽  
Jin Wang
Keyword(s):  
Corrosion Resistance ◽  
Titanium Alloy ◽  
Sulfuric Acid ◽  
High Temperature ◽  
Oxidation Resistance ◽  
High Temperature Oxidation ◽  
Acid Corrosion ◽  
Temperature Oxidation ◽  
Micro Arc Oxidation ◽  
Sulfuric Acid Corrosion

The Al2TiO5Coating was deposited on Ti-6Al-4V alloy substrate by homemade micro-arc oxidation system. The microstructure of Ti-6Al-4V titanium alloy, the phase of coating, the bonding force of the coating and matrix, sulfuric acid corrosion resistance and high-temperature oxidation resistance were study by inverted microscope model, Xray diffract meter, scanning electron microscopy, the coating adhesion automatic scratch tester, box-type furnace. The results show that the phase of coating is composed of Al2TiO5and Al2SiO5, and Al2TiO5.is the main component, the coating surface consists of discharging pit and flange which are unequal in size, rough and overlap and micro-arc oxidation pit diameter increases with the voltage. When micro-arc oxidation voltage is constant, the longer micro-arc oxidation time, the greater the Ti-6Al-4V alloy coating and the substrate binding force. The corrosion resistance of Ti-6Al-4V alloy was improved in sulfuric acid due to micro-arc oxidation; the sulfuric acid corrosion resistance of the coated samples was improved 11 times when the micro-arc oxidation time increased from 5min to 60min. the high-temperature oxidation resistance of Ti-6Al-4V alloy with micro-arc oxidation coatings is higher than Ti-6Al-4V alloy without micro-arc oxidation coating.

New Method for the Corrosion Resistance of AZ31 Mg Alloy with a Porous Micro-Arc Oxidation Membrane as an Ionic Corrosion Inhibitor Container

Langmuir ◽  
2018 ◽  
Vol 35 (5) ◽  
pp. 1134-1145 ◽  
Author(s):  
Zhaoxia Li ◽  
Wenbin Yang ◽  
Qiangliang Yu ◽  
Yang Wu ◽  
Daoai Wang ◽  
...  
Keyword(s):  
Corrosion Resistance ◽  
Corrosion Inhibitor ◽  
New Method ◽  
Mg Alloy ◽  
Az31 Mg Alloy ◽  
Micro Arc Oxidation

Corrosion and Wear Properties of h-BN Modified TC4 Titanium Alloy Micro-Arc Oxide Coatings

2022 ◽  
pp. 1-10
Author(s):  
X W Chen ◽  
P Ren ◽  
D F Zhang ◽  
J Hu ◽  
C Wu ◽  
...  
Keyword(s):  
Wear Resistance ◽  
Corrosion Resistance ◽  
Titanium Alloy ◽  
Hexagonal Boron Nitride ◽  
Corrosion Current ◽  
Ceramic Coatings ◽  
Element Distribution ◽  
Wear Properties ◽  
Tc4 Titanium Alloy ◽  
Micro Arc Oxidation

In this study, ceramic coatings were prepared on the surface of TC4 titanium alloy by micro-arc oxidation (MAO). The morphology, element distribution and phase composition of MAO coatings were analyzed by SEM, EDS, XRD and other analytical methods. The effect of hexagonal boron nitride(h-BN) doping on wear resistance and corrosion resistance of micro-arc oxidation layer was studied. The results show that the coating is mainly composed of rutile TiO2, anatase TiO2 and a small amount of h-BN. Furthermore, the composite coating containing h-BN was less porous than particle-free coating. The test results show that h-BN doping slightly affects the hardness of the MAO coating, and it is helpful in improving the thickness, corrosion resistance and wear resistance of the coatings. When the amount of h-BN is 3 g/L, the corrosion current density of the coating is the smallest; When the addition of h-BN is 1.5 g/L, the friction coefficient of the coating is the smallest. The wear mechanism was adhesive wear, accompanied by slight abrasive wear.

Study Affection of Nano-Al2O3 Additive on the Corrosion Resistance of Micro-Arc Oxidation Film of Titanium Alloy TC4

2012 ◽  
Vol 472-475 ◽  
pp. 2707-2711 ◽  
Author(s):  
Pei Nian Wu ◽  
Guo Jun Niu ◽  
Jian Jun Xi ◽  
Jun Zhao
Keyword(s):  
Corrosion Resistance ◽  
Titanium Alloy ◽  
Surface Morphology ◽  
The Other ◽  
Compact Layer ◽  
Corrosion Resistant ◽  
Pore Area ◽  
Micro Arc Oxidation ◽  
The One ◽  
Α Al2o3

Study the affect of nano-Al2O3 additive on the MAO film of titanium ally, the affect of nano-Al2O3 additive on the surface morphology and the thickness is not remarkable, but the nano-Al2O3 additive is good to improve corrosion resistant of the film. The mechanism of nano-Al2O3 additive improving corrosion resistant of the film is that: on the one hand is improving the content of α- Al2O3 in the film, on the other hand is decreasing the size of the pore area of the film and improving the dense of the loose and compact layer.

Ti-5Al-4FeCr

Alloy Digest ◽  
1969 ◽  
Vol 18 (6) ◽  
Keyword(s):  
Heat Treatment ◽  
Fracture Toughness ◽  
Corrosion Resistance ◽  
Titanium Alloy ◽  
High Temperature ◽  
Heat Treating ◽  
Age Hardening ◽  
Temperature Performance ◽  
Alpha Beta ◽  
Hardening Heat Treatment

Abstract Ti-5A1-4FeCr is an alpha-beta type titanium alloy recommended for airframe components. It responds to an age-hardening heat treatment. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness. It also includes information on high temperature performance and corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: Ti-58. Producer or source: Titanium alloy mills.

Ti-0.20Pd

Alloy Digest ◽  
1968 ◽  
Vol 17 (3) ◽  
Keyword(s):  
Corrosion Resistance ◽  
Titanium Alloy ◽  
High Temperature ◽  
Physical Properties ◽  
Chemical Industry ◽  
Heat Treating ◽  
Temperature Performance ◽  
Industry Applications ◽  
Reactive Metals ◽  
Alpha Type

Abstract Ti-0.20Pd is an alpha-type titanium alloy recommended for the chemical industry applications where environments are moderately reducing, or fluctuate between oxidizing and reducing. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on high temperature performance and corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: Ti-56. Producer or source: Reactive Metals Corporation.

TITANIUM 1Al-8V-5Fe

Alloy Digest ◽  
1968 ◽  
Vol 17 (2) ◽  
Keyword(s):  
Corrosion Resistance ◽  
Titanium Alloy ◽  
High Temperature ◽  
Physical Properties ◽  
Surface Treatment ◽  
Tensile Properties ◽  
Heat Treating ◽  
Temperature Performance ◽  
Reactive Metals

Abstract Titanium IA1-8V-5Fe is an all beta type titanium alloy recommended for high temperature fasteners. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as creep and fatigue. It also includes information on high temperature performance and corrosion resistance as well as forming, heat treating, machining, joining, and surface treatment. Filing Code: Ti-55. Producer or source: Reactive Metals Corporation.

REPUBLIC RS-110A

Alloy Digest ◽  
1963 ◽  
Vol 12 (6) ◽  
Keyword(s):  
Corrosion Resistance ◽  
Titanium Alloy ◽  
Shear Strength ◽  
High Temperature ◽  
Structural Material ◽  
Physical Properties ◽  
Heat Treating ◽  
Alloying Element ◽  
Temperature Performance ◽  
Medium Strength

Abstract Republic RS-110A is a titanium alloy containing manganese as its principle alloying element. The alloy is a medium strength, highly formable sheet alloy which has been used extensively as an aircraft structural material. This datasheet provides information on composition, physical properties, hardness, elasticity, tensile properties, and shear strength. It also includes information on high temperature performance and corrosion resistance as well as forming, heat treating, machining, joining, and surface treatment. Filing Code: Ti-35. Producer or source: Republic Steel Corporation, Titanium Division.

Ti 6Al-4V ELI

Alloy Digest ◽  
2002 ◽  
Vol 51 (7) ◽  
Keyword(s):  
Corrosion Resistance ◽  
Titanium Alloy ◽  
Physical Properties ◽  
Tensile Properties ◽  
High Purity ◽  
Heat Treating ◽  
Bearing Strength ◽  
Technology Corporation ◽  
Good Biocompatibility ◽  
Carpenter Technology Corporation

Abstract Carpenter titanium alloy Ti 6Al-4V ELI is a high-purity (extra-low-interstitial) version of Ti 6Al-4V (see Alloy Digest Ti-60, August 2002). The alloy is alpha plus beta and has good biocompatibility. This datasheet provides information on composition, physical properties, elasticity, tensile properties, and compressive, shear, and bearing strength as well as fatigue. It also includes information on corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: TI-129. Producer or source: Carpenter Technology Corporation.

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