KANICKÝ, Viktor, Vítězslav OTRUBA a Jean-Michel MERMET. Analysis of tungsten carbide coatings by infrared laser-induced argon spark with inductively coupled plasma atomic emission spectrometry. Spectrochimica Acta Part B. Amsterdam: Elsevier Science, 2000, roč. 55, č. 10, s. 1601-1610. ISSN 0584-8547.
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Základní údaje
Originální název Analysis of tungsten carbide coatings by infrared laser-induced argon spark with inductively coupled plasma atomic emission spectrometry
Autoři KANICKÝ, Viktor (203 Česká republika, garant), Vítězslav OTRUBA (203 Česká republika) a Jean-Michel MERMET.
Vydání Spectrochimica Acta Part B, Amsterdam, Elsevier Science, 2000, 0584-8547.
Další údaje
Originální jazyk angličtina
Typ výsledku Článek v odborném periodiku
Obor 10406 Analytical chemistry
Stát vydavatele Nizozemsko
Utajení není předmětem státního či obchodního tajemství
Impakt faktor Impact factor: 2.608
Kód RIV RIV/00216224:14310/00:00002386
Organizační jednotka Přírodovědecká fakulta
UT WoS 000089840600008
Klíčová slova anglicky Inductively Coupled Plasma; Atomic Emission Spectrometry; Laser Ablation; Tungsten Carbide Coating; Cobalt-cemented WC; Infrared Laser
Štítky atomic emission spectrometry, Cobalt-cemented WC, inductively coupled plasma, Infrared Laser, laser ablation, Tungsten Carbide Coating
Příznaky Mezinárodní význam, Recenzováno
Změnil Změnil: prof. RNDr. Viktor Kanický, DrSc., učo 408. Změněno: 29. 6. 2007 09:00.
Anotace
Infrared laser ablation was studied for application to the analysis of plasma-sprayed tungsten carbide/cobalt coatings. The potential of the laser induced argon-spark (LINA-Spark), as a sample introduction device in inductively coupled plasma atomic emission spectrometry was studied. The use of an IR laser along with defocusing led to laser-induced microplasma-based ablation. The mass ablation rate, represented by the ICP emission intensity per laser beam unit area, exhibited a flat increase in the irradiance range 2–250 GW/cm2. A low slope (0.5) of this dependence in log–log scale gave evidence of plasma shielding. The steep increase in the measured acoustic signal when focused in front of the sample, i.e. in argon, indicated a breakdown of argon. Consequently, considerably lower ICP emissions were observed within the same range of irradiance. The cobalt/tungsten line intensity ratio in the ICP was practically constant from 1.5 up to at least 250 GW/cm2. Acceptable precision (R.S.D.<5%) was obtained without internal standardization for irradiance between 2 and 8 GW/cm2. Optimization of the laser pulse energy, repetition rate, beam focusing and sample displacement during interaction led to the linearization of dependences of signal vs. cobalt percentage, at least up to the highest studied value of 23% Co.
Anotace česky
Infrared laser ablation was studied for application to the analysis of plasma-sprayed tungsten carbide/cobalt coatings. The potential of the laser induced argon-spark (LINA-Spark), as a sample introduction device in inductively coupled plasma atomic emission spectrometry was studied. The use of an IR laser along with defocusing led to laser-induced microplasma-based ablation. The mass ablation rate, represented by the ICP emission intensity per laser beam unit area, exhibited a flat increase in the irradiance range 2–250 GW/cm2. A low slope (0.5) of this dependence in log–log scale gave evidence of plasma shielding. The steep increase in the measured acoustic signal when focused in front of the sample, i.e. in argon, indicated a breakdown of argon. Consequently, considerably lower ICP emissions were observed within the same range of irradiance. The cobalt/tungsten line intensity ratio in the ICP was practically constant from 1.5 up to at least 250 GW/cm2. Acceptable precision (R.S.D.<5%) was obtained without internal standardization for irradiance between 2 and 8 GW/cm2. Optimization of the laser pulse energy, repetition rate, beam focusing and sample displacement during interaction led to the linearization of dependences of signal vs. cobalt percentage, at least up to the highest studied value of 23% Co.
Návaznosti
GA203/97/0345, projekt VaVNázev: Charakterizace speciálních materiálů pro moderní technologie
Investor: Grantová agentura ČR, Standardní projekty
VS97020, projekt VaVNázev: Laboratoř plazmových zdrojů pro chemickou analýzu
Investor: Ministerstvo školství, mládeže a tělovýchovy ČR, Posílení výzkumu na vysokých školách
VytisknoutZobrazeno: 27. 2. 2021 12:02