Anomalous Oxidation Resistance of “Core-Only” Copper Nanoparticles Electrochemically Grown on Gold Nanoislands Prefunctionalized by 1,4-phenylene Diisocyanide

2012 ◽  
Vol 15 (4) ◽  
pp. K35 ◽  
Author(s):  
Youngku Sohn ◽  
Debabrata Pradhan ◽  
Liyan Zhao ◽  
K. T. Leung
Keyword(s):  
Oxidation Resistance ◽  
Copper Nanoparticles ◽  
Gold Nanoislands ◽  
Anomalous Oxidation

Copper Nanoparticles Mitigate the Growth, Immunity, and Oxidation Resistance in Common Carp (Cyprinus carpio)

2020 ◽  
Vol 198 (1) ◽  
pp. 283-292 ◽  
Author(s):  
Mahmoud A. O. Dawood ◽  
Nabil M. Eweedah ◽  
Eman Moustafa Moustafa ◽  
Mohamed E. El-Sharawy ◽  
Ali A. Soliman ◽  
...  
Keyword(s):  
Oxidation Resistance ◽  
Common Carp ◽  
Copper Nanoparticles ◽  
Cyprinus Carpio ◽  
Common Carp Cyprinus Carpio ◽  
Carp Cyprinus Carpio

A Facile Synthesis of Monodispersed Carbon-encapsulated Copper Nanoparticles with Excellent Oxidation Resistance from a Refluxing-derived Precursor

2013 ◽  
Vol 42 (6) ◽  
pp. 627-629 ◽  
Author(s):  
Xiaopeng Meng ◽  
Jiqiu Wen ◽  
Yadong Yao ◽  
Yi Ding ◽  
Yichao Gong ◽  
...  
Keyword(s):  
Oxidation Resistance ◽  
Copper Nanoparticles ◽  
Facile Synthesis

Precious metal-like oxide-free copper nanoparticles: high oxidation resistance and geometric structure

RSC Advances ◽  
2016 ◽  
Vol 6 (106) ◽  
pp. 104560-104565 ◽  
Author(s):  
Masaya Miyagawa ◽  
Toshiki Maeda ◽  
Ryo Tokuda ◽  
Akane Shibusawa ◽  
Takuya Aoki ◽  
...  
Keyword(s):  
Metal Nanoparticles ◽  
Oxidation Resistance ◽  
Copper Nanoparticles ◽  
Geometric Structure ◽  
Precious Metal ◽  
Environmental Friendly ◽  
High Oxidation ◽  
High Oxidation Resistance

Precious metal-like oxide-free copper nanoparticles, which are desired for alternatives as precious metal nanoparticles, were synthesized by environmental-friendly photoreduction method.

Morphologies of Nonadherent Al2O3 and Matching Substrate Surfaces

1972 ◽  
Vol 30 ◽  
pp. 524-525
Author(s):  
C. S. Giggins ◽  
J. K. Tien ◽  
B. H. Kear ◽  
F. S. Pettit
Keyword(s):  
Electron Microscopy ◽  
Oxide Scale ◽  
Oxidation Resistance ◽  
Substrate Surface ◽  
Morphological Features ◽  
Thermally Induced ◽  
Oxide Spallation ◽  
Oxidation Resistant ◽  
Induced Stresses ◽  
Substrate Surfaces

The performance of most oxidation resistant alloys and coatings is markedly improved if the oxide scale strongly adheres to the substrate surface. Consequently, in order to develop alloys and coatings with improved oxidation resistance, it has become necessary to determine the conditions that lead to spallation of oxides from the surfaces of alloys. In what follows, the morphological features of nonadherent Al2O3, and the substrate surfaces from which the Al2O3 has spalled, are presented and related to oxide spallation.The Al2O3, scales were developed by oxidizing Fe-25Cr-4Al (w/o) and Ni-rich Ni3 (Al,Ta) alloys in air at 1200°C. These scales spalled from their substrates upon cooling as a result of thermally induced stresses. The scales and the alloy substrate surfaces were then examined by scanning and replication electron microscopy.The Al2O3, scales from the Fe-Cr-Al contained filamentary protrusions at the oxide-gas interface, Fig. 1(a). In addition, nodules of oxide have been developed such that cavities were formed between the oxide and the substrate, Fig. 1(a).

Phase transformation and layer evolution in molybdenum disilicide-silicon carbide nanolayered coatings

1994 ◽  
Vol 52 ◽  
pp. 538-539
Author(s):  
H. Kung ◽  
T. R. Jervis ◽  
J.-P. Hirvonen ◽  
M. Nastasi ◽  
T. E. Mitchell ◽  
...  
Keyword(s):  
Phase Transformation ◽  
High Temperature ◽  
Oxidation Resistance ◽  
Elevated Temperatures ◽  
Matrix Material ◽  
Molybdenum Disilicide ◽  
High Temperature Strength ◽  
Cross Sectional ◽  
Good Oxidation Resistance ◽  
Structural Applications

MoSi2 is a potential matrix material for high temperature structural composites due to its high melting temperature and good oxidation resistance at elevated temperatures. The two major drawbacksfor structural applications are inadequate high temperature strength and poor low temperature ductility. The search for appropriate composite additions has been the focus of extensive investigations in recent years. The addition of SiC in a nanolayered configuration was shown to exhibit superior oxidation resistance and significant hardness increase through annealing at 500°C. One potential application of MoSi2- SiC multilayers is for high temperature coatings, where structural stability ofthe layering is of major concern. In this study, we have systematically investigated both the evolution of phases and the stability of layers by varying the heat treating conditions.Alternating layers of MoSi2 and SiC were synthesized by DC-magnetron and rf-diode sputtering respectively. Cross-sectional transmission electron microscopy (XTEM) was used to examine three distinct reactions in the specimens when exposed to different annealing conditions: crystallization and phase transformation of MoSi2, crystallization of SiC, and spheroidization of the layer structures.

UDIMET L-605

Alloy Digest ◽  
2004 ◽  
Vol 53 (12) ◽  
Keyword(s):  
Corrosion Resistance ◽  
High Temperature ◽  
Physical Properties ◽  
Tensile Properties ◽  
Gas Turbine ◽  
Oxidation Resistance ◽  
Turbine Blades ◽  
Heat Treating ◽  
Gas Turbine Blades ◽  
Temperature Performance

Abstract Udimet L-605 is a high-temperature aerospace alloy with excellent strength and oxidation resistance. It is used in applications such as gas turbine blades and combustion area parts. This datasheet provides information on composition, physical properties, and tensile properties as well as creep. It also includes information on high temperature performance and corrosion resistance as well as forming, heat treating, and joining. Filing Code: CO-109. Producer or source: Special Metals Corporation.

NAS HX

Alloy Digest ◽  
2013 ◽  
Vol 62 (4) ◽  
Keyword(s):  
High Temperature ◽  
Physical Properties ◽  
Tensile Properties ◽  
Oxidation Resistance ◽  
Heat Treating ◽  
Molybdenum Alloy ◽  
Nickel Chromium ◽  
Temperature Performance

Abstract NAS HX (UNS N06002) is a nickel-chromium-iron-molybdenum alloy with outstanding strength and oxidation resistance. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as creep. It also includes information on high temperature performance as well as forming, heat treating, and joining. Filing Code: Ni-707. Producer or source: Nippon Yakin Kogyo Company Ltd.

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