Oxidation behavior of Si- rich Mo-Si-B coating doped with La by spark plasma sintering

2021 ◽  
Vol 192 ◽  
pp. 109762
Author(s):  
Zilong Wu ◽  
Kanglu Feng ◽  
Jiangbo Sha ◽  
Chungen Zhou
2010 ◽  
Vol 152-153 ◽  
pp. 940-944
Author(s):  
Hua Chen ◽  
Jing Chao Zhang ◽  
X.Y Lu

The spark plasma sintering (SPS) microstructure and high temperature oxidation behavior of TiH2-45Al-0.2Si-5Nb(at.%) alloy were investigated.Emphasis was placed on the effect of SPS microstructures, obtained by blend powder and mechanical alloying powder. The mass gain due to oxidation was measured using an electro balance. The oxide layers as well as its micro-structure were examined by SEM and EDS, and XRD. The results show that sintered microstructure of blend powder is composed of fully lamellar TiAl/ Ti3Al phase, and that of the mechanical alloying powder is composed of finer granular TiAl/Ti3Al phase. The latter oxidation rate is lower, and forms continuous mixed oxide layer of Al2O3 and TiO2. Both SPS microstructure of blend powder and mechanical alloying powder are superior in oxidation behavior to ordinary vacuum sintering.


1999 ◽  
Vol 7 (9) ◽  
pp. 1043-1048 ◽  
Author(s):  
T Murakami ◽  
C.N Xu ◽  
A Kitahara ◽  
M Kawahara ◽  
Y Takahashi ◽  
...  

2015 ◽  
Vol 629 ◽  
pp. 148-154 ◽  
Author(s):  
Xiaoqiang Li ◽  
Minai Zhang ◽  
Donghai Zheng ◽  
Ting Cao ◽  
Jian Chen ◽  
...  

Materials ◽  
2020 ◽  
Vol 13 (3) ◽  
pp. 800
Author(s):  
Pavel Novák ◽  
Zdeněk Barták ◽  
Kateřina Nová ◽  
Filip Průša

This paper describes the structure and properties of an innovative Fe-Al-Si alloy with a reduced amount of silicon (5 wt. %) in order to avoid excessive brittleness. The alloy was produced by a combination of mechanical alloying and spark plasma sintering. Nickel and titanium were independently tested as the alloying elements for this alloy. It was found that wear resistance, which reached values comparable with tool steels, could be further improved by the addition of nickel. Nickel also improved the high-temperature oxidation behavior, because it lowers the liability of the oxide layers to spallation. Both nickel and titanium increased the hardness of the alloy. Titanium negatively influenced oxidation behavior and wear resistance because of the presence of titanium dioxide in the oxide layer and the brittle silicides that caused chipping wear, respectively.


2018 ◽  
Vol 132 ◽  
pp. 293-299 ◽  
Author(s):  
Yang Miao ◽  
Zhihua Yang ◽  
Bin Liang ◽  
Daxin Li ◽  
Quan Li ◽  
...  

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