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Article
A study on the development of engineering plastic piston used in the shock absorber
A piston is an important component of the shock absorber which determines comfortable riding and handling. Conventional piston is made of metal powder that is pressed in a mold, and then sintered at high tempe...
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Article
Effects of filler and ethanol on mechanical properties of glass-like carbon
The effects of filler and ethanol on the mechanical properties of glass-like carbon were studied. The specific gravities of glass-like carbons with the filler were higher than those of alcohol added glass-like...
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Article
Effects of ammonia in catalytic chemical vapor deposition in the synthesis of carbon nanotubes
Chemical vapor deposition with xylene as the carbon resource, a nitrate iron solution as the catalyst, and ammonia gas as the reduction gas was used to investigate the different parameters that influence carbo...
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Article
Carbon nanotubes grown over Fe−Mo−Mg−O composite catalysts
High quality, high yield carbon nanotubes were synthesized on a composite catalyst using catalytic chemical vapor deposition. The composite catalysts Fe/MgO, Mo/MgO and (Fe, Mo)/ MgO, prepared via the solgel m...
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Article
Effects of temperature and catalysts on the synthesis of carbon nanotubes by chemical vapor deposition
Carbon nanotubes were produced on a quartz plate and a silicon wafer by chemical vapor deposition using xylene as a carbon resource, iron and cobalt as catalysts, and ammonia as a reactive gas. A series of exp...
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Article
Effect of metal chloride solutions on coloration and biaxial flexural strength of yttria-stabilized zirconia
The effect of three kinds of transition metal dopants on the color and biaxial flexural strength of zirconia ceramics for dental applications was evaluated. Presintered zirconia discs were colored through imme...
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Article
Pore characteristics of Lotus-Type Porous Copper Fabricated by Centrifugal Casting
Lotus-type porous copper was fabricated by a centrifugal casting. The long cylindrical pores aligned along single direction was formed during unidirectional solidification in a hydrogen atmosphere under a cent...
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Article
Strengthening Effect of Decreased Dislocation Density After Annealing in Pure Aluminum or Copper
Plastic deformation in metals occurs through the generation and movement of dislocations, leading to strain hardening. The dislocation density has long been known as a measure of work hardening in metals and a...