Oxide Formation on NbAl3, and TiAl Due to Ion Implantation of 18O

1993 ◽  
Vol 316 ◽  
Author(s):  
Robert J. Hanrahan ◽  
Ellis D. Verink ◽  
Stephen P. Withrow ◽  
Eero O. Ristolainen
Keyword(s):  
Ion Implantation ◽  
Photoelectron Spectroscopy ◽  
X Ray Diffraction ◽  
Oxide Formation ◽  
Temperature Oxidation ◽  
Near Surface ◽  
X Ray ◽  
Surface Oxides ◽  
Secondary Ion ◽  
Oxygen Profiles

ABSTRACTSurface modification by ion implantation of 18O ions was investigated as a technique for altering the high-temperature oxidation of aluminide intermetallic compounds and related alloys. Specimens of NbAl3 and TiAl were implanted to a dose of 1×1018 ions/cm2 at 168 keV. Doses and accelerating energies were calculated to obtain near-stoichiometric concentrations of oxygen. Use of 18O allowed the implanted oxygen profiles to be measured using secondary ion mass spectroscopy (SIMS). The near surface oxides formed were studied using x-ray photoelectron spectroscopy (XPS) and Auger electron spectroscopy. Specimens were also examined using x-ray diffraction and SEM. This paper presents results for specimens examined in the as-implanted state. The oxide formed due to implantation is a layer containing a mixture of Nb or Ti and amorphous Al oxides.

Optical properties of anatase TiO2 films modified by N ion implantation

2012 ◽  
Vol 90 (1) ◽  
pp. 39-43 ◽  
Author(s):  
X. Xiang ◽  
D. Chang ◽  
Y. Jiang ◽  
C.M. Liu ◽  
X.T. Zu
Keyword(s):  
Thin Films ◽  
Ion Implantation ◽  
Photoelectron Spectroscopy ◽  
Radio Frequency Magnetron Sputtering ◽  
X Ray Diffraction ◽  
X Ray ◽  
Atomic Force ◽  
Light Region ◽  
Uv Visible ◽  
Substrate Temperatures

Anatase TiO2 thin films are deposited on K9 glass samples at different substrate temperatures by radio frequency magnetron sputtering. N ion implantation is performed in the as-deposited TiO2 thin films at ion fluences of 5 × 1016, 1 × 1017, and 5 × 1017 ions/cm2. X-ray diffraction, atomic force microscope, X-ray photoelectron spectroscopy (XPS), and UV–visible spectrophotometer are used to characterize the films. With increasing N ion fluences, the absorption edges of anatase TiO2 films shift to longer wavelengths and the absorbance increases in the visible light region. XPS results show that the red shift of TiO2 films is due to the formation of N–Ti–O compounds. As a result, photoactivity is enhanced with increasing N ion fluence.

scholarly journals Microstructure and Mechanical Properties of Ti + N Ion Implanted Cronidur30 Steel

Materials ◽  
2019 ◽  
Vol 12 (3) ◽  
pp. 427 ◽  
Author(s):  
Jie Jin ◽  
Wei Wang ◽  
Xinchun Chen
Keyword(s):  
Mechanical Properties ◽  
Ion Implantation ◽  
Photoelectron Spectroscopy ◽  
Structural Modification ◽  
Surface Region ◽  
Grazing Incidence ◽  
Bearing Steel ◽  
Near Surface ◽  
X Ray ◽  
Ion Implanted

In this study, Ti + N ion implantation was used as a surface modification method for surface hardening and friction-reducing properties of Cronidur30 bearing steel. The structural modification and newly-formed ceramic phases induced by the ion implantation processes were investigated by transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), and grazing incidence X-ray diffraction (GIXRD). The mechanical properties of the samples were tested by nanoindentation and friction experiments. The surface nanohardness was also improved significantly, changing from ~10.5 GPa (pristine substrate) to ~14.2 GPa (Ti + N implanted sample). The friction coefficient of Ti + N ion implanted samples was greatly reduced before failure, which is less than one third of pristine samples. Furthermore, the TEM analyses confirmed a trilamellar structure at the near-surface region, in which amorphous/ceramic nanocrystalline phases were embedded into the implanted layers. The combined structural modification and hardening ceramic phases played a crucial role in improving surface properties, and the variations in these two factors determined the differences in the mechanical properties of the samples.

scholarly journals Patterning Luminescent Nanocrystalline  : Eu and  : Tb Particles Embedded in Hybrid Organosilica with Soft-Lithographic Techniques

2012 ◽  
Vol 2012 ◽  
pp. 1-11 ◽  
Author(s):  
Sajid U. Khan ◽  
Johan E. ten Elshof
Keyword(s):  
Photoelectron Spectroscopy ◽  
Substrate Surface ◽  
Solution Chemistry ◽  
Ion Scattering ◽  
X Ray Diffraction ◽  
X Ray ◽  
Low Energy Ion Scattering ◽  
Pattern Shape ◽  
Secondary Ion

Eu3+-doped LaPO4and Tb3+-doped CePO4luminescent nanoparticles embedded in hybrid organosilica were patterned by two soft lithographic techniques. The role of various parameters such as solution chemistry, thermal protocols, and modification of the mold-substrate surface energies related to pattern shape formation and adhesion to the substrates have been studied. The shrinkage of the oxide patterns and shape evolution during the process was also examined. The patterns were characterized with optical and photoluminescence (PL) microscopy, X-ray diffraction (XRD), and scanning electron microscopy (SEM). Compositional analyses were carried out with X-ray photoelectron spectroscopy (XPS), low-energy ion scattering (LEIS), and secondary ion mass spectroscopy (SIMS). The results indicated that the final patterns obtained with these two techniques for the same material have different shapes and adherence to the substrates.

The Nature of Surface Oxides on Magnesium Diboride

2001 ◽  
Vol 689 ◽  
Author(s):  
Chandana Meegoda ◽  
Yu. Paderno ◽  
Michael Trenary
Keyword(s):  
Photoelectron Spectroscopy ◽  
Electron Spectroscopy ◽  
Auger Electron ◽  
Magnesium Diboride ◽  
Line Broadening ◽  
X Ray Diffraction ◽  
X Ray ◽  
Surface Oxides ◽  
Auger Spectra ◽  
Major Surface

ABSTRACTSurface oxides present on polycrystalline MgB2 were characterized by high-resolution x-ray photoelectron spectroscopy (XPS) and Auger electron spectroscopy (AES). X-ray diffraction (XRD) measurements were used to determine the MgB2 phases. XRD line broadening analysis reveals a grain size of 40 nm. XPS results show that MgO and B2O3 are the major surface oxides. Auger spectra provide further evidence of the presence of MgO. The B 1s and Mg 2p peaks have been used to quantify the amount of the surface oxides.

Buried SiC Layers in (100) Bulk Silicon and Silicon-on-Sapphire Produced by Carbon Ion Implantation

1985 ◽  
Vol 45 ◽  
Author(s):  
L. Kroko ◽  
I. Golecki ◽  
H.L. GLASS
Keyword(s):  
Mass Spectrometry ◽  
Ion Implantation ◽  
Secondary Ion Mass Spectrometry ◽  
Bulk Silicon ◽  
X Ray Diffraction ◽  
X Ray ◽  
Infra Red ◽  
Buried Layers ◽  
Secondary Ion ◽  
Crystal Bulk

ABSTRACTWe demonstrate the formation of buried layers of SiC in (100) single-crystal bulk Si and silicon-on-sapphire by ion implantation of 125-180 keV, (0.56-1.00)×1018 C/cm2 at 30-40 μA/cm2 into samples held at 450-650¼C. The as-implanted and 950°C annealed samples are characterized by differential infra-red absorbance and reflectance, Rutherford backscattering and channeling spectrometry, X-ray diffraction, four-point probe, Dektak profilometry, I-V measurements, spreading resistance and secondary ion mass spectrometry.

scholarly journals Effects of Ti, Ni, and Dual Ti/Ni Plasma Immersion Ion Implantation on the Corrosion and Wear Properties of Magnesium Alloy

Coatings ◽  
2020 ◽  
Vol 10 (4) ◽  
pp. 313
Author(s):  
Jun Dai ◽  
Zheng Liu ◽  
Banglong Yu ◽  
Qingdong Ruan ◽  
Paul K. Chu
Keyword(s):  
Magnesium Alloy ◽  
Ion Implantation ◽  
Photoelectron Spectroscopy ◽  
Wear Test ◽  
Corrosion And Wear ◽  
X Ray Diffraction ◽  
Wear Properties ◽  
X Ray ◽  
Bonding Properties ◽  
Plasma Immersion Ion Implantation

Ti, Ni, and Ti/Ni plasma immersion ion implantation is carried out on the AM60 magnesium alloy with a 6 × 1016 ions/cm2 fluence and energy of 35 keV. The corrosion and wear properties of the ion-implanted samples are determined systematically by X-ray photoelectron spectroscopy, X-ray diffraction, scanning electron microscopy, electrochemical methods and wear tests. A Ni-rich layer composed of α-Mg, Ni2O3, and NiTi2 is formed on the surface after dual Ti/Ni ion implantation, and the ion implantation range is approximately 300 nm. The corrosion resistance of the Ni- and Ti/Ni-implanted AM60 samples is significantly reduced in the 3.5% NaCl solution. However, NiTi2 does not adhere well to the grinding ring during the wear test due to the bonding properties, and the sample implanted with both Ti and Ni shows the best wear resistance.

scholarly journals Effects of NH3 Plasma and Mg Doping on InGaZnO pH Sensing Membrane

Membranes ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 994
Author(s):  
Chyuan-Haur Kao ◽  
Chia-Shao Liu ◽  
Shih-Ming Chan ◽  
Chih-Chen Kuo ◽  
Shang-Che Tsai ◽  
...  
Keyword(s):  
Photoelectron Spectroscopy ◽  
Ph Sensing ◽  
X Ray Diffraction ◽  
X Ray ◽  
Mg Doping ◽  
Transmission Electron ◽  
Multiple Material ◽  
Sensing Membrane ◽  
Secondary Ion ◽  
Mg Doped

In this study, the effects of magnesium (Mg) doping and Ammonia (NH3) plasma on the pH sensing capabilities of InGaZnO membranes were investigated. Undoped InGaZnO and Mg-doped pH sensing membranes with NH3 plasma were examined with multiple material analyses including X-ray diffraction, X-ray photoelectron spectroscopy, secondary ion mass spectroscopy and transmission electron microscope, and pH sensing behaviors of the membrane in electrolyte-insulator-semiconductors. Results indicate that Mg doping and NH3 plasma treatment could superpositionally enhance crystallization in fine nanostructures, and strengthen chemical bindings. Results indicate these material improvements increased pH sensing capability significantly. Plasma-treated Mg-doped InGaZnO pH sensing membranes show promise for future pH sensing biosensors.

scholarly journals Effect Of Ti-Ion Implantation On The Mechanical And Corrosion Properties Of The Fecrni Super Alloy

KnE Energy ◽  
2016 ◽  
Vol 1 (1) ◽  
Author(s):  
Ari Handayani
Keyword(s):  
Corrosion Resistance ◽  
Ion Implantation ◽  
Surface Hardness ◽  
Hardness Measurement ◽  
Alloy Sample ◽  
X Ray Diffraction ◽  
Corrosion Properties ◽  
Near Surface ◽  
X Ray ◽  
Super Alloy

<p>Ion implantation is widely used for surface treatment to modify the near surface properties of materials especially semiconductors without changing their bulk properties. In this work an investigation on the effect of implantation by Ti-ion on the mechanical properties and the wet corrosion of the high Cr and Ni content FeCrNi alloy was performed. Because of its superior properties this alloy is also well known as super alloy and often used as structure material in nuclear reactors. The alloy <del cite="mailto:USER" datetime="2016-05-18T11:01">was fabricated </del><del cite="mailto:USER" datetime="2016-05-18T10:59">at </del><del cite="mailto:USER" datetime="2016-05-18T11:01">BATAN </del><del cite="mailto:USER" datetime="2016-05-18T11:00">in </del><del cite="mailto:USER" datetime="2016-05-18T11:01">Bandung </del>containing <ins cite="mailto:USER" datetime="2016-05-18T10:38">of </ins>55.98 wt.% Fe , 23.46 wt.% Cr, 18.23 wt.% Ni and small amount of other metal elements<ins cite="mailto:USER" datetime="2016-05-18T11:01">, </ins><ins cite="mailto:USER" datetime="2016-05-18T11:01">was fabricated </ins><ins cite="mailto:USER" datetime="2016-05-18T11:01">in</ins><ins cite="mailto:USER" datetime="2016-05-18T11:01"> BATAN Bandung</ins>. The alloy sample was subjected to Ti-ion implantation in an ion generator with theoretical doses varied between 0.89x10<sup>16</sup>, 2.68x10<sup>16</sup>, 3.58x10<sup>16</sup> and 10.75x10<sup>16</sup> ion/cm<sup>2</sup>respectivelly. The hardness measurement was conducted with Vickers method and the corrosion resistance test was carried out in the borax acid (HBO<sub>3</sub>) environment. The microstructure of the material after implantation was characterized and analyzed by means of the Scanning Electron Microscopy (SEM) equipped with the Energy Dispersive X-Ray Detector (EDX) while the surface crystal structure was idenfied using X-Ray Diffraction (XRD). The result showed that the Ti implantation improved the surface hardness when the dose was higher than 3.58x10<sup>16</sup> ion/cm<sup>2</sup>, while the corrosion resistance increased abruptly at all ion doses. However, no microstructure change could be observed on the cross section. A thin layer which is indicated by BSE image contrast was observed in the top most surface. Analysis on the EDS spectrum revealed that the layer could be considered to be the titanium oxide elucidating the increasing of hardness and exceptionally higher resistance to wet corrosion.</p>

Microstructure, Mechanical and Tribological Properties of the Tialn Coatings after Nb and C Dual Ion Implantation

2014 ◽  
Vol 789 ◽  
pp. 455-460 ◽  
Author(s):  
Bin Deng ◽  
Jun Fei Pei ◽  
Ye Tao
Keyword(s):  
Ion Implantation ◽  
Tribological Properties ◽  
Photoelectron Spectroscopy ◽  
Wear Behavior ◽  
Ion Source ◽  
Nanoindentation Test ◽  
X Ray Diffraction ◽  
X Ray ◽  
Mechanical And Tribological Properties ◽  
Magnetic Filter

Ion implantation is an effective method to enhance hardness and wear resistance of the TiAlN coatings. In this paper, Nb and C ions are co-implanted into TiAlN coatings deposited by Magnetic Filter Arc Ion Plating (MFAIP), using a Metal Vacuum Vapor Arc (MEVVA) ion source implantor with doses of 1×1017and 5×1017ions/cm2. The microstructure, chemical composition, mechanical and tribological properties of Nb+C-implanted TiAlN coatings have been investigated by glancing incidence X-ray diffraction, X-ray photoelectron spectroscopy, nanoindentation test and SRV friction & wear tester, respectively. The results showed that the NbN and TiC phases could be detected both from the XRD and XPS profiles of as-prepared films. Nb and C ion implantation could improve the hardness, plastic deformation resistance and wear behavior of TiAlN coatings due to the energetic Nb and C ion bombardment and the formation of NbN and TiC phases.

scholarly journals Carminic Acid Stabilized with Aluminum-Magnesium Hydroxycarbonate as New Colorant Reducing Flammability of Polymer Composites

Molecules ◽  
2019 ◽  
Vol 24 (3) ◽  
pp. 560 ◽  
Author(s):  
Anna Marzec ◽  
Bolesław Szadkowski ◽  
Jacek Rogowski ◽  
Waldemar Maniukiewicz ◽  
Dariusz Moszyński ◽  
...  
Keyword(s):  
Heat Release ◽  
Photoelectron Spectroscopy ◽  
Polymer Materials ◽  
Carminic Acid ◽  
X Ray Diffraction ◽  
Inorganic Hybrid ◽  
X Ray ◽  
Vis Spectroscopy ◽  
Lower Heat ◽  
Secondary Ion

In this study, hybrid pigments based on carminic acid (CA) were synthesized and applied in polymer materials. Modification of aluminum-magnesium hydroxycarbonate (LH) with CA transformed the soluble chromophore into an organic-inorganic hybrid colorant. Secondary ion mass spectroscopy (TOF-SIMS), X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), thermogravimetric analysis (TGA), scanning electron microscopy (SEM), and UV-Vis spectroscopy were used to study the structure, composition, and morphology of the insoluble LH/CA colorant. Successful modification of the LH was confirmed by the presence of interactions between the LH matrix and molecules of CA. XPS analysis corroborated the presence of CA complexes with Mg2+ ions in the LH host. The batochromic shift in UV-Vis spectra of the organic-inorganic hybrid colorant was attributed to metal-dye interactions in the organic-inorganic hybrid colorants. Strong metal-dye interactions may also be responsible for the improved solvent resistance and chromostability of the modified LH. In comparison to uncolored ethylene-norbornene copolymer (EN), a modified EN sample containing LH/CA pigment showed lower heat release rate (HRR) and reduced total heat release (THR), providing the material with enhanced flame retardancy.

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