TITLE

Laser nitriding of iron with laser pulses from femtosecond to nanosecond pulse duration

AUTHOR(S)
Schaaf, P.; Han, M.; Lieb, K.-P.; Carpene, E.
PUB. DATE
February 2002
SOURCE
Applied Physics Letters;2/11/2002, Vol. 80 Issue 6, p1091
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Pulsed-laser nitriding is an attractive method to improve metal surface properties, such as hardness, wear, and corrosion resistance, with the advantage of simple experimental setup, rapid treatment, and precise process control. Here, the dependence of the laser nitriding process on the laser pulse duration was investigated over five orders of magnitude in a series of experiments employing pulsed lasers ranging from nanosecond excimer laser pulses (55 ns) and Nd-doped yttrium aluminum garnet (Nd:YAG) laser pulses (8 ns), to ultrashort Ti:sapphire laser pulses (150 fs). The results revealed that for all laser pulse durations and different wavelengths a large nitriding effect was observed. The excimer laser shows the highest nitriding efficiency. The basic processes for the femtosecond pulsed laser are not well understood but seem to result at least partly from processes within the plasma, whereas nanosecond nitriding is based mainly on processes within the liquid/solid surface. © 2002 American Institute of Physics.
ACCESSION #
6005445

 

Related Articles

  • The effects of food processing on biogenic amines formation. Chong, C. Y.; Abu Bakar, F.; Russly, A. R.; Jamilah, B.; Mahyudin, N. A. // International Food Research Journal;Aug2011, Vol. 18 Issue 3, p867 

    Biological amines are nitrogenous compounds that occur naturally in wide variety of food. Histamine, putrescine, cadavarine, tyramine, spermine, spermidine, tryptamine and Î’-phenylethylamine are the biogenic amines that are normally present in foods. Although the biogenic amines play some...

  • Melting of Aluminum Nitride at Atmospheric Nitrogen Pressure. D�yachkov, L. G.; Zhilyakov, L. A.; Kostanovskii, A. V. // Technical Physics;Jul2000, Vol. 45 Issue 7, p928 

    Experimental results on the melting of aluminum nitride heated by an electric arc burning in a nitrogen atmosphere at a pressure of 0.2-0.3 MPa are presented. A qualitative explanation of the dissociation suppression mechanism under arc heating is proposed. It has been shown that the suppression...

  • Experimental identification of p-type conduction in fluoridized boron nitride nanotube. Zhao, Jing; Li, Wuxia; Tang, Chengchun; Li, Lin; Lin, Jing; Gu, Changzhi // Applied Physics Letters;4/15/2013, Vol. 102 Issue 15, p153107 

    The transport properties of F-doped boron nitride nanotube (BNNT) top-gate field effect devices were investigated to demonstrate the realization of p-type BNNTs by F-doping. The drain current was found to increase substantially with the applied negative gate voltage, suggesting these devices...

  • Simplified Qualitative Method for Canavanine in Seeds and Sprouts. Rajkowski, Kathleen T. // Journal of Food Protection;Jan2004, Vol. 67 Issue 1, p212 

    The major stored nitrogen compound in alfalfa seeds is canavanine. To identify this nonprotein amino acid from seed extract and sprout water, a qualitative micro-thin-layer chromatography method was developed. Successful separation and identification was achieved using microsilica plates, a...

  • Deposition of Fe-N films by means of an opposed targets sputtering type plasma source. Hoshi, Y.; Naoe, M. // Journal of Applied Physics;4/15/1991, Vol. 69 Issue 8, p5622 

    Presents a study which synthesized iron nitride films and investigated its structure and magnetic properties. Details of the film preparation; Results; Discussion.

  • Phase and chemical transformations of lanthanum and iron alloys in a nitrogen-hydrogen medium. Shilkin, S. P. // Russian Journal of General Chemistry;Aug2004, Vol. 74 Issue 8, p1147 

    The behavior of LaxFe1-x alloys in a nitrogen-hydrogen medium at 293-723 K and a pressure of up to 1.5 × 107 Pa was studied. The alloys decompose to give LaH2.9 and a-Fe at 293 K, LaN, LaH2.4, and a-Fe at 623 K, and LaN and a-Fe at 723 K. Ammonia was detected in the gas phase at 623-723 K.

  • Fixed spin moment calculations of the total energy of Fe16N2. Jansen, H.J.F. // Journal of Applied Physics;4/16/1997, Vol. 81 Issue 8, p3866 

    Calculates the total energy of Fe16N2 at the experimental crystal structure as a function of the total magnetic moment. Effect of decrease of total spin moment; Transition to a ferromagnetic state; Calculation for a system without nitrogen.

  • Laser detects the tiniest particles in car exhausts.  // Environmental Engineering;Jun2010, Vol. 23 Issue 2, p13 

    The article reports on the launch by Horiba Europe of the QL-NX nitrogen compounds emissions measurement system based on quantum cascade laser (QCL) technology.

  • Structure and properties of the Ti-Si-N nanocrystalline coatings synthesized in vacuum by the electroarc method. Koval�, N.; Ivanov, Yu.; Goncharenko, I.; Krysina, O.; Kolubaeva, Yu.; Koshkin, K. // Russian Physics Journal;Feb2007, Vol. 50 Issue 2, p146 

    Phase composition, defect substructure, and mechanical properties of the Ti-Si-N coating deposited on metal and ceramic-metal substrates by electroarc sputtering of the Ti-Si composite cathode in an ionized nitrogen atmosphere are investigated by the methods of modern materials science. It is...

Share

Read the Article

Courtesy of VIRGINIA BEACH PUBLIC LIBRARY AND SYSTEM

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics