DISPERSION OF CARBON NANOFIBERS IN AQUEOUS SOLUTION

NANO ◽  
2012 ◽  
Vol 07 (06) ◽  
pp. 1250052 ◽  
Author(s):  
BAO-MIN WANG ◽  
YUAN ZHANG ◽  
ZHI-QIANG GUO ◽  
YU HAN ◽  
HAI-NAN MA
Keyword(s):  
Aqueous Solution ◽  
Surface Tension ◽  
Adsorption Isotherm ◽  
Carbon Nanofibers ◽  
Concentration Ratio ◽  
Heat Treating ◽  
Optimum Concentration ◽  
Zeta Potentials ◽  
Heat Treated ◽  
Uv Absorbency

Carbon nanofibers (CNFs) were purified by the method of heat treating, and stable homogeneous suspensions of heat-treated CNFs were prepared by using methylcellulose (MC) as a surfactant. The heat-treated CNFs were characterized by differential thermal analysis (DTA) and thermogravimetry analysis (TGA), and the sonication-driven dispersion of CNFs in aqueous solution was investigated by measuring ultraviolet absorbency (UV absorbency), zeta potential, adsorption isotherm of MC on CNFs and surface tension of CNF suspensions. In these CNF suspensions, the zeta potentials of CNFs progressively increase with increasing MC concentration, and change from -15.4–0 mV. The surface tension of CNF suspensions decrease from 38.87 mN/m to 36.54 mN/m. The adsorption isotherm of MC on CNFs shows an adsorption platform (namely "L" style), and the adsorption isotherm reaches the saturation plateau at MC concentration of about 0.4 g/L. All results show that the optimum concentration ratio of MC to CNFs is 2:1 for dispersion.

AMPCO 940 and AMPCO-TRODE 940

Alloy Digest ◽  
1993 ◽  
Vol 42 (3) ◽  
Keyword(s):  
Copper Alloys ◽  
Heat Treating ◽  
Resistance Welding ◽  
Chromium Alloy ◽  
Heat Treated ◽  
Association Class ◽  
Potential Applications ◽  
Minimum Requirements ◽  
Nickel Silicon ◽  
Plastic Injection

Abstract AMPCO 940 is a precipitation-hardening copper-nickel-silicon-chromium alloy developed for resistance welding and other applications now using the 1% beryllium-copper alloys. The heat-treated alloy is capable of meeting the RWMA (Resistance Welder Manufacturers Association) Class 3 minimum requirements-95,000 psi tensile strength, 90 Rockwell B hardness and 45% IACS electrical conductivity. Potential applications include resistance welding tips, wheels and fixtures. A major use is in plastic injection molding. AMPCO-TRODE 940 is used for repair welding and overlays. This datasheet provides information on composition, physical properties, hardness, and tensile properties. It also includes information on high temperature performance and corrosion resistance as well as casting, forming, heat treating, machining, and joining. Filing Code: CU-434. Producer or source: Ampco Metal Inc. Originally published as Ampcoloy 940, April 1982, revised March 1993.

UNS A03560

Alloy Digest ◽  
1986 ◽  
Vol 35 (12) ◽  
Keyword(s):  
Fracture Toughness ◽  
Corrosion Resistance ◽  
High Strength ◽  
Heat Treating ◽  
Casting Alloy ◽  
Aluminum Casting ◽  
Good Resistance ◽  
Aluminum Casting Alloy ◽  
Temperature Performance ◽  
Heat Treated

Abstract UNS No. A03560 is a heat-treatable aluminum casting alloy. Normally it is used only when heat-treated (aged) strengths are required. It is recommended for high-strength, pressure-tight castings, intricate shapes and where good resistance to corrosion is needed. Its many applications include crank cases, gear cases, oil pans, airframe fittings and instrument housings. 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 casting, heat treating, machining, and joining. Filing Code: Al-274. Producer or source: Various aluminum companies.

SCHMELZMETALL HOVADUR CCZ

Alloy Digest ◽  
2020 ◽  
Vol 69 (9) ◽  
Keyword(s):  
Thermal Conductivity ◽  
Spot Welding ◽  
Zirconium Alloy ◽  
High Strength ◽  
Heat Treating ◽  
Softening Temperature ◽  
Aged Condition ◽  
Heat Treated ◽  
High Softening Temperature ◽  
Made In

Abstract Schmelzmetall Hovadur CCZ is a heat-treatable, copper-chromium-zirconium alloy. In the solution heat-treated and artificially aged condition, this alloy exhibits high thermal and electrical conductivity along with high strength and a high softening temperature. Hovadur CCZ evolved from CuCr1 (CW105C), a precipitation-hardenable alloy first made in the 1930s for spot welding electrodes, for which strength and hardness at temperatures up to 500 °C (930 °F), as well as good electrical and thermal conductivity, are essential. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on forming, heat treating, machining, and joining. Filing Code: Cu-912. Producer or source: Schmelzmetall AG.

FEDERATED F401.5Ni

Alloy Digest ◽  
1974 ◽  
Vol 23 (12) ◽  
Keyword(s):  
Fracture Toughness ◽  
Elevated Temperatures ◽  
High Strength ◽  
Heat Treating ◽  
Casting Alloy ◽  
Aluminum Casting ◽  
Aluminum Casting Alloy ◽  
Treated Condition ◽  
Heat Treated ◽  
Heat Treated Condition

Abstract FEDERATED F401.5Ni is a heat-treatable aluminum casting alloy with high strength and good wear resistance in the fully heat-treated condition. It is recommended for castings requiring good strength at elevated temperatures. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness. It also includes information on corrosion resistance as well as casting, heat treating, machining, and joining. Filing Code: Al-212. Producer or source: Federated Metals Corporation, ASARCO Inc..

UNS A96101

Alloy Digest ◽  
1988 ◽  
Vol 37 (3) ◽  
Keyword(s):  
Electrical Conductivity ◽  
Corrosion Resistance ◽  
Shear Strength ◽  
Physical Properties ◽  
High Strength ◽  
Heat Treating ◽  
High Electrical Conductivity ◽  
Treated Condition ◽  
Heat Treated ◽  
Heat Treated Condition

Abstract UNS NO. A96101 in the heat treated condition is used primarily for enclosed bus conductor where both high strength and high electrical conductivity are desirable. This datasheet provides information on composition, physical properties, hardness, elasticity, tensile properties, and shear strength as well as fatigue. It also includes information on corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: Al-287. Producer or source: Various aluminum companies.

UNS A02080

Alloy Digest ◽  
1988 ◽  
Vol 37 (1) ◽  
Keyword(s):  
Fracture Toughness ◽  
Corrosion Resistance ◽  
Shear Strength ◽  
Physical Properties ◽  
Tensile Properties ◽  
Heat Treating ◽  
General Purpose ◽  
Sand Casting ◽  
Casting Alloy ◽  
Heat Treated

Abstract UNS No. A02080 is a heat-treatable casting alloy characterized by good castability, machinability and resistance to corrosion. It is produced by sand casting and is a general-purpose alloy recommended in both the as-cast and heat-treated conditions. This datasheet provides information on composition, physical properties, hardness, elasticity, tensile properties, and compressive and shear strength as well as fracture toughness and fatigue. It also includes information on corrosion resistance as well as casting, heat treating, machining, and joining. Filing Code: Al-286. Producer or source: Various aluminum companies.

BRUSH ALLOY 190

Alloy Digest ◽  
1968 ◽  
Vol 17 (12) ◽  
Keyword(s):  
Tensile Strength ◽  
Corrosion Resistance ◽  
Physical Properties ◽  
Surface Treatment ◽  
Tensile Properties ◽  
Heat Treating ◽  
Copper Strip ◽  
Beryllium Copper ◽  
Heat Treated

Abstract Brush Alloy 190 is a mill-heat treated beryllium copper strip with a tensile strength up to 190,000 psi. It eliminates the need of customer heat-treating by providing high properties combined with exceptional formability. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fatigue. It also includes information on corrosion resistance as well as forming, heat treating, joining, and surface treatment. Filing Code: Cu-194. Producer or source: Brush Beryllium Company.

CRUCIBLE CSM #2

Alloy Digest ◽  
1968 ◽  
Vol 17 (9) ◽  
Keyword(s):  
Physical Properties ◽  
Tool Steel ◽  
Die Casting ◽  
Heat Treating ◽  
Steel Company ◽  
Heat Treated ◽  
Alloy Tool ◽  
Crucible Steel

Abstract Crucible CSM #2 is an alloy tool steel recommended for die casting dies and plastic molds. It is usually heat treated to two hardness levels, either 200 Brinell or 300 Brinell. CSM #2 machines readily and polishes easily at both hardness levels. This datasheet provides information on composition, physical properties, hardness, and elasticity. It also includes information on forming, heat treating, machining, and joining. Filing Code: TS-210. Producer or source: Crucible Steel Company of America.

CARPENTER Ti 6Al-4V

Alloy Digest ◽  
2002 ◽  
Vol 51 (8) ◽  
Keyword(s):  
Fracture Toughness ◽  
Heat Treating ◽  
Bearing Strength ◽  
Aerospace Applications ◽  
Temperature Performance ◽  
Beta Alloy ◽  
Heat Treated ◽  
Technology Corporation ◽  
Alpha Beta ◽  
Carpenter Technology Corporation

Abstract Carpenter titanium alloy 6Al-4V is an alpha-beta alloy that contains alpha and beta stabilizers and can be heat treated. This alloy accounts for more than 50% of total titanium usage, mostly in aerospace applications. This datasheet provides information on composition, physical properties, elasticity, tensile properties, and compressive, shear, and bearing strength as well as fracture toughness 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-60. Producer or source: Carpenter Technology Corporation. Originally published as Carpenter Titanium 6-4, October 1970, revised August 2002.

UNS G61200

Alloy Digest ◽  
1991 ◽  
Vol 40 (4) ◽  
Keyword(s):  
Fracture Toughness ◽  
High Temperature ◽  
Heat Treating ◽  
Case Hardening ◽  
Steel Mills ◽  
Temperature Performance ◽  
Treated Condition ◽  
Heat Treated ◽  
High Fatigue ◽  
Heat Treated Condition

Abstract UNS G62100 is a tough, shock resisting, case-hardening chromium-vanadium steel. It has high fatigue resistance in the heat treated condition. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness. It also includes information on low and high temperature performance as well as forming, heat treating, machining, and joining. Filing Code: SA-458. Producer or source: Alloy steel mills and foundries.

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