Fabrication of NiTi intermetallic compound coating made by laser plasma hybrid spraying of mechanically alloyed powders

2001 ◽  
Vol 139 (1) ◽  
pp. 93-100 ◽  
Author(s):  
Hitoshi Hiraga ◽  
Takashi Inoue ◽  
Shigeharu Kamado ◽  
Yo Kojima ◽  
Akira Matsunawa ◽  
...  
Keyword(s):  
Intermetallic Compound ◽  
Laser Plasma ◽  
Mechanically Alloyed ◽  
Compound Coating

scholarly journals Heat Treatment-Induced Microstructure and Property Evolution of Mg/Al Intermetallic Compound Coatings Prepared by Al Electrodeposition on Mg Alloy from Molten Salt Electrolytes

Materials ◽  
2021 ◽  
Vol 14 (6) ◽  
pp. 1407
Author(s):  
Tianyu Yao ◽  
Kui Wang ◽  
Haiyan Yang ◽  
Haiyan Jiang ◽  
Jie Wei ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Intermetallic Compound ◽  
Intermetallic Compounds ◽  
Mg Alloy ◽  
X Ray Diffraction ◽  
Electron Backscattered Diffraction ◽  
Alloy Matrix ◽  
Comprehensive Properties ◽  
Compound Coatings ◽  
Compound Coating

A method of forming an Mg/Al intermetallic compound coating enriched with Mg17Al12 and Mg2Al3 was developed by heat treatment of electrodeposition Al coatings on Mg alloy at 350 °C. The composition of the Mg/Al intermetallic compounds could be tuned by changing the thickness of the Zn immersion layer. The morphology and composition of the Mg/Al intermetallic compound coatings were characterized using scanning electron microscopy (SEM), X-ray diffraction (XRD), and electron backscattered diffraction (EBSD). Nanomechanical properties were investigated via nano-hardness (nHV) and the elastic modulus (EIT), and the corrosion behavior was studied through hydrogen evolution and potentiodynamic (PD) polarization. The compact and uniform Al coating was electrodeposited on the Zn-immersed AZ91D substrate. After heat treatment, Mg2Al3 and Mg17Al12 phases formed, and as the thickness of the Zn layer increased from 0.2 to 1.8 μm, the ratio of Mg2Al3 and Mg17Al12 varied from 1:1 to 4:1. The nano-hardness increased to 2.4 ± 0.5 GPa and further improved to 3.5 ± 0.1 GPa. The Mg/Al intermetallic compound coating exhibited excellent corrosion resistance and had a prominent effect on the protection of the Mg alloy matrix. The control over the ratio of intermetallic compounds by varying the thickness of the Zn immersion layer can be an effective approach to achieve the optimal comprehensive performance. As the Zn immersion time was 4 min, the obtained intermetallic compounds had relatively excellent comprehensive properties.

Research on High Temperature Anti-Abrasion Protection Technology of Thermocouple Cannula

2007 ◽  
Vol 353-358 ◽  
pp. 1765-1768
Author(s):  
Hong Fei Sun ◽  
Can Ming Wang ◽  
Qiang Song ◽  
Qiong Qiong Yan
Keyword(s):  
High Temperature ◽  
Intermetallic Compound ◽  
Service Life ◽  
New Technologies ◽  
Work Conditions ◽  
Protection Method ◽  
Metal Ceramic ◽  
Protection Technology ◽  
Compound Coating ◽  
Ceramic Compound

Abrasion mechanism of thermocouple cannula is studied in this article. For different working position and condition, different material should be selected to ensure the working characteristics of thermocouple cannula. Several protection methods were introduced to prolong the sevice life of thermocouple cannula. 1. M-Al series intermetallic compound coating protection method. 2. Metal/ceramic compound coating protection method. 3. Development of new abrasion-resisting material for high temperature according to some special work conditions of thermocouple cannula. With the adoption of those new technologies, thermocouple cannula’s service life can be prolonged to 3~5 times of that untreated.

Microstructure and tribological properties of TiAg intermetallic compound coating

2011 ◽  
Vol 257 (24) ◽  
pp. 10692-10698 ◽  
Author(s):  
Chun Guo ◽  
Jianmin Chen ◽  
Jiansong Zhou ◽  
Jierong Zhao ◽  
Linqian Wang ◽  
...  
Keyword(s):  
Intermetallic Compound ◽  
Tribological Properties ◽  
Compound Coating

Microstructure and tribological properties of TiCu2Al intermetallic compound coating

2011 ◽  
Vol 257 (13) ◽  
pp. 5885-5892 ◽  
Author(s):  
Chun Guo ◽  
Jiansong Zhou ◽  
Jierong Zhao ◽  
Linqian Wang ◽  
Youjun Yu ◽  
...  
Keyword(s):  
Intermetallic Compound ◽  
Tribological Properties ◽  
Compound Coating

Characterization of High-Temperature Abrasive Wear of Cold-Sprayed FeAl Intermetallic Compound Coating

2010 ◽  
Vol 20 (1-2) ◽  
pp. 227-233 ◽  
Author(s):  
Chang-Jiu Li ◽  
Hong-Tao Wang ◽  
Guan-Jun Yang ◽  
Chong-Gao Bao
Keyword(s):  
High Temperature ◽  
Intermetallic Compound ◽  
Abrasive Wear ◽  
Compound Coating

TiAlNb intermetallic compound coating prepared by high velocity oxy-fuel spraying

2011 ◽  
Vol 206 (1) ◽  
pp. 178-184 ◽  
Author(s):  
H.J. Zeng ◽  
L.Q. Zhang ◽  
J.P. Lin ◽  
S.J. Zhang ◽  
G.L. Chen
Keyword(s):  
Intermetallic Compound ◽  
High Velocity ◽  
Compound Coating
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