The bending strength of sintered iron- and copper-base materials at low temperatures

1966 ◽  
Vol 5 (2) ◽  
pp. 128-132
Author(s):  
I. M. Storozhevskii ◽  
N. A. Filatova
Keyword(s):  
Low Temperatures ◽  
Bending Strength ◽  
Sintered Iron ◽  
Copper Base ◽  
Base Materials

Finish machining of sintered iron and copper base materials

1974 ◽  
Vol 13 (8) ◽  
pp. 674-677 ◽  
Author(s):  
V. V. Podgorkov ◽  
S. A. Vasil'chikov ◽  
V. S. Rakovskii
Keyword(s):  
Sintered Iron ◽  
Copper Base ◽  
Finish Machining ◽  
Base Materials

Vacuum titanizing of sintered iron-base materials

1976 ◽  
Vol 15 (10) ◽  
pp. 759-761
Author(s):  
A. Yu. Kem ◽  
S. S. Miroshnikov ◽  
É. N. Popov
Keyword(s):  
Sintered Iron ◽  
Iron Base ◽  
Base Materials

Long-Term Corrosion Behavior of Copper-Base Materials in a Gamma-Irradiated Environment

1986 ◽  
Vol 84 ◽  
Author(s):  
Wlyne H. Yunker ◽  
Robert S. Glass
Keyword(s):  
Water Vapor ◽  
Gamma Radiation ◽  
Nuclear Waste ◽  
Pure Copper ◽  
Department Of Energy ◽  
High Dose ◽  
Uniform Corrosion ◽  
Copper Base ◽  
Base Materials ◽  
Gamma Irradiated

AbstractThe U. S. Department of Energy is currently evaluating the feasibility of using copper-base materials for the manufacture of nuclear waste con- tainers. One site under consideration for geologic disposal of nuclear waste is at Yucca Mountain, Nevada. One feature of this waste repository will be the initial presence of ionizing gamma radiation at high dose rates, which may alter the corrosive medium. To evaluate such effects, three copper-base materials (pure copper, 7% aluminum-copper and 30% nickel-copper) have been exposed (presgntly up to 14 months) to a gamma radiation field of approxi- mately 1 × 104 roentgens/hr. The exposure environments have been: 1) both groundwater (regional to the repository site, although taken from a lower elevation) at 95°C; 2) the water-vapor saturated air phase above it; and 3) air/water vapor at 150°C. In addition to uniform corrosion, both pitting and crevice corrosion have been observed. Characterization of the corrosion layers by X-ray diffraction has shown the presence of mixed copper(I) and copper(II) oxides. Studies by Auger Electron Spectroscopy (AES) have also been conducted in order to further characterize the compositions and structures of these corrosion products.

Elevated-temperature mechanical properties of sintered iron-base materials containing calcium fluoride additions

1976 ◽  
Vol 15 (3) ◽  
pp. 238-242 ◽  
Author(s):  
I. M. Fedorchenko ◽  
Yu. F. Shevchuk ◽  
V. N. Miroshnikov ◽  
V. A. Borisenko
Keyword(s):  
Mechanical Properties ◽  
Elevated Temperature ◽  
Calcium Fluoride ◽  
Sintered Iron ◽  
Iron Base ◽  
Base Materials

Fabrication of Nano-MgO Reinforced Fe-Cr-Ni Composites by Reactive Hot Pressing

2009 ◽  
Vol 620-622 ◽  
pp. 551-554 ◽  
Author(s):  
Chang Chen ◽  
Jian Feng Yang ◽  
Ji Qiang Gao ◽  
Cong Yang Chu
Keyword(s):  
Hot Pressing ◽  
Low Temperatures ◽  
Bending Strength ◽  
Exothermic Reaction ◽  
X Ray ◽  
Three Point Bending ◽  
Fine Grained ◽  
In Situ Formation ◽  
Reactive Hot Pressing

The self-propagating combustion reaction 0.741Mg + 0.247Fe2O3 + 0.188Ni + 0.318Cr → 0.741MgO + Fe0.494Ni0.188Cr0.318 was applied to prepare a nano-MgO reinforced Fe-Cr-Ni composite, by reactive hot pressing (RHP) under a condition of 700°C/30MPa/2h. The densification was enabled by the low temperatures produced by the exothermic reaction. According to TG-DTA and X-ray diffractometry (XRD), the highly-exothermic thermite reaction began at about 600°C and the in-situ formation of composites comprised predominantly of (FCC) Cr0.19Fe0.7Ni0.11, (FCC) Fe-Cr, (BCC) MgO and a small quantity of (BCC) MgFe2O4. The Vickers hardness was 3.67GPa, the three-point bending strength was 112.5±10MPa, and the fracture toughness was 3.28 MPa•m1/2. The microstructure of the composite was observed via scanning electron microscopy. This indicated that the distributions of in-situ-formed (BCC) MgO phases (~800 nanometers) were homogeneous into in a matrix of a fine-grained metallic alloy phases that gather together to form agglomerates in the composite.

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