Pyrolytic laser-based chemical vapour deposition of TIC coatings

Zergioti, I.; Hatziapostolou, A.; Hontzopoulos, E.; Zervaki, A. D.; Haidemenopoulos, Gregory N.

doi:10.1016/0040-6090(95)06906-2

Cited by 28 publications

(10 citation statements)

References 9 publications

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“…[1][2][3][4][5][6] A wide variety of application is possible in material processing. However, the CO 2 laser is hardly applied to polymers, and there is very little literature in this field: etching of polymer 7 and curing of epoxy resin.…”

Section: Introductionmentioning

confidence: 99%

Mechanical properties and superstructure of poly(ethylene terephthalate) fibers zone‐drawn and zone‐annealed by CO₂ laser heating

Suzuki

Mochiduki

2001

J of Applied Polymer Sci

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ABSTRACT:A laser-heating zone-drawing and zone-annealing method using a continuous-wave carbon dioxide laser was applied to poly(ethylene terephthalate) (PET) fiber to improve its mechanical properties. The as-spun fiber was zone-drawn under a applied tension ( a ) of 4.44 MPa at a laser power density (PD) of 6.08 W cm Ϫ2, and then the laser-heated zone-drawn fiber was zone-annealed. The laser-heating zone-annealing was carried out in three steps: the first annealing was carried out under a ϭ 139 MPa at 4.83 W cm Ϫ2 ; the second annealing was carried out under a ϭ 283 MPa at 4.83 W cm Ϫ2 , and the third annealing was carried out under a ϭ 432 MPa at 3.45 W cm Ϫ2 . The surface temperature distribution of the fiber irradiated with the CO 2 laser was measured by using an infrared thermographic camera equipped with a magnifying lens. The relation between the laser power and the surface temperature of the fiber became clear in the laser-heating zone-drawing and the laser-heating zone-annealing. The fiber obtained finally had a birefringence of 0.239, a degree of crystallinity of 55%, a tensile modulus of 19.8 GPa, and a storage modulus of 25.7 GPa at 25°C. In FTIR measurements, a trans conformation increased with the processing, but a gauche one decreased. The laser-heating zone-drawing and zone-annealing method was found to be effective in producing the PET fiber with high modulus and high strength.

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Section: Introductionmentioning

confidence: 99%

Mechanical properties and superstructure of poly(ethylene terephthalate) fibers zone‐drawn and zone‐annealed by CO₂ laser heating

Suzuki

Mochiduki

2001

J of Applied Polymer Sci

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“…In order to prevent these undesirable interactions and to improve the oxidation resistance, the surface of graphite should be modified, e.g., by coating with a protective ceramic layer. Titanium carbide is a well-known coating material used in industrial applications due to its high hardness, good corrosion and wear resistance [5]. Moreover, TiC has a high melting temperature, good thermal shock resistance, and good chemical and physical sputtering resistance under bombardment by highly energetic particles [6].…”

Section: Introductionmentioning

confidence: 99%

Formation of titanium carbide on graphite via powder immersion reaction assisted coating

Yin

Gotman

Klinger

et al. 2005

Materials Science and Engineering: A

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“…[1][2][3][4][5][6][7][8] We applied a continuous-wave carbon dioxide (CW CO 2 ) laser to poly(ethylene terephthalate) (PET) 9 and nylon 6 10 fibers to improve their mechanical properties. The drawing and annealing by using the CW CO 2 laser was found to be effective in producing fibers with high modulus and high strength.…”

Section: Introductionmentioning

confidence: 99%

Isotactic polypropylene microfiber prepared by carbon dioxide laser‐heating

Suzuki

Narusue

2004

J of Applied Polymer Sci

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An isotactic polypropylene (i-PP) microfiber was obtained by irradiating a carbon dioxide laser to previously drawn fibers. To prepare the thinner i-PP microfiber, it is necessary to previously draw original i-PP fibers under an applied tension of 7.8 MPa at a drawing temperature of 140°C. The drawn fiber was heated under an applied tension of 0.3 MPa using the laser operated at a power density of 39.6 W cm Ϫ2 . The thinnest i-PP microfiber obtained under optimum conditions had a diameter of 1.8 m and a birefringence of 30 ϫ 10 Ϫ3 . Its draw ratio estimated from the diameter reached 51,630. It is so far impossible to achieve such a high draw ratio by any drawing. The wide-angle X-ray diffraction photograph of the microfiber shows the existence of the oriented crystallites. Laser-heating allows easier fabrication of microfibers compared with the conventional technology such as the conjugate spinning.

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Pyrolytic laser-based chemical vapour deposition of TIC coatings

Cited by 28 publications

References 9 publications

Mechanical properties and superstructure of poly(ethylene terephthalate) fibers zone‐drawn and zone‐annealed by CO₂ laser heating

Mechanical properties and superstructure of poly(ethylene terephthalate) fibers zone‐drawn and zone‐annealed by CO₂ laser heating

Formation of titanium carbide on graphite via powder immersion reaction assisted coating

Isotactic polypropylene microfiber prepared by carbon dioxide laser‐heating

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Pyrolytic laser-based chemical vapour deposition of TIC coatings

Cited by 28 publications

References 9 publications

Mechanical properties and superstructure of poly(ethylene terephthalate) fibers zone‐drawn and zone‐annealed by CO2 laser heating

Mechanical properties and superstructure of poly(ethylene terephthalate) fibers zone‐drawn and zone‐annealed by CO2 laser heating

Formation of titanium carbide on graphite via powder immersion reaction assisted coating

Isotactic polypropylene microfiber prepared by carbon dioxide laser‐heating

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Product

Resources

About

Mechanical properties and superstructure of poly(ethylene terephthalate) fibers zone‐drawn and zone‐annealed by CO₂ laser heating

Mechanical properties and superstructure of poly(ethylene terephthalate) fibers zone‐drawn and zone‐annealed by CO₂ laser heating