A scalable and facile synthesis of alumina/exfoliated graphite composites by attrition milling

RSC Advances ◽  
2015 ◽  
Vol 5 (113) ◽  
pp. 93267-93273 ◽  
Author(s):  
Eunsil Lee ◽  
Ki Beom Choi ◽  
Sung-Min Lee ◽  
Jong-Young Kim ◽  
Jong-Yeol Jung ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Fracture Toughness ◽  
Wear Resistance ◽  
Exfoliated Graphite ◽  
Facile Synthesis ◽  
One Pot ◽  
Pure Alumina ◽  
Graphite Composite ◽  
Attrition Milling ◽  
Graphite Composites

We present a facile one-pot synthesis of alumina/exfoliated graphite composite having excellent electrical conductivity (>1,000 S m−1), fracture toughness (5.6 MPa m0.5), and wear resistance, which is enhanced by 7.7 times compared to pure alumina.

Facile preparation method for polymer and exfoliated graphite composites and their application as conduction-promoting materials

RSC Advances ◽  
2016 ◽  
Vol 6 (31) ◽  
pp. 25776-25779 ◽  
Author(s):  
Shoji Nozato ◽  
Akira Nakasuga ◽  
Takuya Wada ◽  
Hiroshi Yoshitani ◽  
Hirotaka Ihara
Keyword(s):  
Electrical Conductivity ◽  
Carbon Material ◽  
Preparation Method ◽  
Exfoliated Graphite ◽  
High Electrical Conductivity ◽  
Grafted Polymer ◽  
Facile Preparation ◽  
Graphite Composites

This paper introduces a new carbon material having high electrical conductivity and dispersibility, which is characterized by a partially exfoliated structure with grafted polymer and restacking ability through removal of the grafted polymer.

Preparation and Properties of Cf-TiB2-Cu-Graphite Composites

2012 ◽  
Vol 535-537 ◽  
pp. 8-13
Author(s):  
Shao Fan Xu ◽  
Shao Ping Xu ◽  
Cheng Nan Zhu ◽  
Chuan Yong Yuan
Keyword(s):  
Mechanical Properties ◽  
Wear Resistance ◽  
Powder Metallurgy ◽  
Dry Friction ◽  
Bending Strength ◽  
Physical And Mechanical Properties ◽  
Powder Metallurgy Method ◽  
Sliding Velocity ◽  
Graphite Composite ◽  
Graphite Composites

Copper-plated TiB2-Cu-graphite composite, Cf-TiB2-Cu-graphite composite and Cf-copper-plated TiB2-Cu-graphite composite with the same TiB2 content were prepared by the powder metallurgy method. Physical and mechanical properties of these composites were tested. The dry friction tests of the composites under sliding velocity of 10m/s and load of 4.9N were conducted for 36h. The results show that the properties of the Cf-copper-plated TiB2-Cu-graphite composite such as electric conductivity, hardness, bending strength and wear resistance are increased remarkably than those of either Cf-TiB2-Cu-graphite or copper-plated TiB2-Cu-graphite composites.

Titanium Carbide Reinforced Composite Tool Ceramics Based on Alumina

2010 ◽  
Vol 65 ◽  
pp. 50-55
Author(s):  
Magdalena Szutkowska ◽  
Barbara Smuk ◽  
Marek Boniecki
Keyword(s):  
Fracture Toughness ◽  
Wear Resistance ◽  
Titanium Carbide ◽  
High Hardness ◽  
Ceramic Composites ◽  
Critical Stress Intensity Factor ◽  
Pure Alumina ◽  
Reinforced Composite ◽  
Composite Tool ◽  
Tool Ceramics

The present study reports some preliminary results obtained by reinforcing Al2O3-10 wt% ZrO2 (partially stabilized with Y2O3 -Y5 and monoclinic phase m-ZrO2) composite with TiC phase in amount of 5 wt %. Ceramic composites were prepared on the basis submicro and nano scale trade powders. Apparent density, porosity, Vicker’s hardness, Young’s modulus and fracture toughness (KIC) were determined. Wear resistance (Vn) very important property for tool ceramics was specified by the speed of mass lost. Scanning electron microscopy (SEM) to observation of the fracture surface microstructure was used. The titanium carbide reinforced composite tool ceramics based on alumina exhibit high hardness, fracture toughness (critical stress intensity factor KIC increase up to 5,2 MPa m1/2), high elastic moduli and higher wear resistance in related to pure alumina. Cutting tests confirm the high performance of these ceramic composites.

scholarly journals Influence of the Dopants on the Mechanical Properties of Alumina-Based Ceramics

2013 ◽  
Vol 2013 ◽  
pp. 1-6 ◽  
Author(s):  
Anton Sergeevich Kaygorodov ◽  
Vasily Ivanovich Krutikov ◽  
Sergey Nikolaevich Paranin
Keyword(s):  
Mechanical Properties ◽  
Fracture Toughness ◽  
Wear Resistance ◽  
Elastic Modulus ◽  
Hot Pressing ◽  
Synthesis Method ◽  
Crystalline Lattice ◽  
Alumina Matrix ◽  
Pure Alumina ◽  
Sufficient Decrease

In the present study the mechanical properties of dense alumina-based ceramics obtained by two processing routes are investigated. The application of magnetic-pulsed compaction or hot pressing of the powder leads to a comparable combination of microhardness, elastic modulus, and fracture toughness. The insertion of Al into Al2O3 powder increases the microdistortions of the crystalline lattice, resulting in the sufficient decrease of indentation wear-resistance. The usage of ZrO2 or TiCN as dopants to alumina matrix improves slightly the mechanics of the composites with a noticeable decrease of the material lost by 30% compared to pure alumina at closely spaced arrays of indents. Regardless of the synthesis method, the ceramic grains were formed completely with the fracture travelling along the grain boundaries.

ELECTRAFIL G-50/SS/5

Alloy Digest ◽  
1991 ◽  
Vol 40 (1) ◽  
Keyword(s):  
Electrical Conductivity ◽  
Fracture Toughness ◽  
Stainless Steel ◽  
Physical Properties ◽  
Tensile Properties ◽  
Steel Fibers ◽  
Engineering Plastics ◽  
Shielding Material

Abstract ELECTRAFIL G-50/SS/5 provides good electrical conductivity at a low loading of stainless steel fibers. It is useful as a shielding material and for current carrying parts. This datasheet provides information on physical properties, and tensile properties as well as fracture toughness. Filing Code: Cp-13. Producer or source: AKZO Engineering Plastics.

COPPER ALLOY No. 182

Alloy Digest ◽  
1975 ◽  
Vol 24 (12) ◽  
Keyword(s):  
Electrical Conductivity ◽  
Fracture Toughness ◽  
Corrosion Resistance ◽  
Shear Strength ◽  
High Temperature ◽  
Copper Alloy ◽  
Heat Treating ◽  
Age Hardening ◽  
High Electrical Conductivity ◽  
Temperature Performance

Abstract Copper Alloy NO. 182 is an age-hardening type of alloy that combines relatively high electrical conductivity with good strength and hardness. It was formerly known as Chromium Copper and its applications include such uses as resistance-welding-machine electrodes, switch contacts and cable connectors. 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 high temperature performance and corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: Cu-305. Producer or source: Copper and copper alloy mills.

AISI C1060

Alloy Digest ◽  
1969 ◽  
Vol 18 (12) ◽  
Keyword(s):  
Fracture Toughness ◽  
Wear Resistance ◽  
Corrosion Resistance ◽  
Physical Properties ◽  
Tensile Properties ◽  
Alloy Steel ◽  
Heat Treating ◽  
Spring Steel ◽  
High Carbon ◽  
Steel Mills

Abstract AISI C1060 is a high-carbon water or oil hardening tool and spring steel recommended for heavy machinery parts, shafts, springs and miscellaneous tools requiring strength and wear resistance. 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 heat treating, machining, and joining. Filing Code: CS-32. Producer or source: Carbon and alloy steel mills.

SWEBOR 400

Alloy Digest ◽  
2014 ◽  
Vol 63 (3) ◽  
Keyword(s):  
Fracture Toughness ◽  
Wear Resistance ◽  
Tensile Properties ◽  
High Strength Steel ◽  
High Strength ◽  
Bend Strength ◽  
Great Strength ◽  
Wear Resistant

Abstract Swebor 400 (hardness 400 HBW) is a high-strength steel with good wear resistant qualities. This alloy is used to endure conditions of extra-heavy wear and when great strength and good weldability is required. This datasheet provides information on composition, hardness, tensile properties, and bend strength as well as fracture toughness. It also includes information on wear resistance as well as forming, machining, and joining. Filing Code: CS-181. Producer or source: Swebor Stål Svenska AB.

WAUKESHA ALLOY 23

Alloy Digest ◽  
1993 ◽  
Vol 42 (3) ◽  
Keyword(s):  
Fracture Toughness ◽  
Wear Resistance ◽  
High Temperature ◽  
Physical Properties ◽  
Tensile Properties ◽  
High Resistance ◽  
Corrosion And Wear ◽  
Casting Alloy ◽  
Temperature Performance ◽  
Nickel Base

Abstract WAUKESHA METAL NO. 23 is a nickel-base casting alloy having high resistance to corrosion, good machinability, and freedom from any tendency to seize or gall. 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, corrosion and wear resistance as well as machining and joining. Filing Code: Ni-49. Producer or source: Waukesha Foundry Company. Originally published January 1959, revised March 1993.

COPPER ALLOY No. 878

Alloy Digest ◽  
1979 ◽  
Vol 28 (12) ◽  
Keyword(s):  
Fracture Toughness ◽  
Wear Resistance ◽  
Corrosion Resistance ◽  
Copper Alloy ◽  
Die Casting ◽  
Heat Treating ◽  
Casting Alloys ◽  
Copper Zinc ◽  
Die Castings ◽  
Very High

Abstract Copper Alloy No. 878 is a copper-zinc-silicon alloy for die castings. Among the brass die-casting alloys, it has the highest strength, hardness and wear resistance; however, it is the most difficult to machine. It is used where very high requirements must be met for strength and wear resistance. Its many applications include tools, pump impellers, gears and marine hardware. 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: Cu-386. Producer or source: Copper alloy producers.

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