Plasma and nitrides: application to the nitriding of titanium

Gicquel, A.; Laidani, N.; Saillard, P.

doi:10.1351/pac199062091743

Cited by 48 publications

(17 citation statements)

References 10 publications

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“…Whereas, it has been recently reported that the nitridation of the Ti-based compounds (TiO 2 and LTO) can form a more conductive TiO x N y species [27][28][29][30][31]. Motivated by this, herein, a simple ammonia treatment was applied to form thin TiO x N y layers covered on the primary nanoparticles' surface of the mesoporous LTO spheres to improve their whole electrical conductivity.…”

Section: Introductionmentioning

confidence: 99%

Nitridated mesoporous Li4Ti5O12 spheres for high-rate lithium-ion batteries anode material

Zhao

Pang

Zhang

et al. 2013

J Solid State Electrochem

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Nitridated mesoporous Li 4 Ti 5 O 12 spheres were synthesized by a simple ammonia treatment of Li 4 Ti 5 O 12 derived from mesoporous TiO 2 particles and lithium acetate dihydrate via a solid state reaction in the presence of polyethylene glycol 20000. The carbonization of polyethylene glycol could effectively restrict the growth of primary particles, which was favorable for lithium ions diffusing into the nanosized TiO 2 lattice during the solid state reaction to form a pure phase Li 4 Ti 5 O 12 . After a subsequent thermal nitridation treatment, a high conductive thin TiO x N y layer was in situ constructed on the surface of the primary nanoparticles. As a result, the nitridated mesoporous Li 4 Ti 5 O 12 structure, possessing shorter lithium-ion diffusion path and better electrical conductivity, displays significantly improved rate capability. The discharge capacity reaches 138 mAhg −1 at 10 C rate and 120 mAhg −1 at 20 C rate in the voltage range of 1-3 V.

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Section: Introductionmentioning

confidence: 99%

Nitridated mesoporous Li4Ti5O12 spheres for high-rate lithium-ion batteries anode material

Zhao

Pang

Zhang

et al. 2013

J Solid State Electrochem

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“…Hal ini karena ukuran atom nitrogen sebesar 0,92 Å masih jauh lebih kecil daripada ukuran atom titanium. Proses difusi interstisi sangat dipengaruhi oleh kelowongan pada struktur kristal dan koefisien difusi dari nitrogen [10]. Nilai koefisien difusi sangat bergantung pada suhu proses.…”

Section: Pembahasanunclassified

“…Selain itu, ukuran kelowongan kisi (vacancy site) juga mempengaruhi proses difusi, seperti ukuran kelowongan kisi oktahedral yang lebih besar dibandingkan dengan kelowongan kisi tetrahedral akan menyebabkan nitrogen terlarut cenderung menempati kelowongan kisi oktahedral karena akan membutuhkan energi difusi yang lebih rendah [10] …”

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Pembentukan Titanium Nitrida (TiN) dengan Proses Nitriding pada Titanium Murni Menggunakan Plasma Densitas Tinggi

Windajanti

Santjojo

Abdurrouf

2017

JRM

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Pure titanium has been widely utilized in industry but its products suffered from low wear and erosion resistance. The plasma nitriding was selected as a tool to harden the pure titanium products but typically high temperature processing was required to attain high hardness. In the present study, high density plasma nitriding system was applied to make low temperature plasma nitriding at 723 K (or 450C) PENDAHULUANTitanium adalah logam yang sangat atraktif karena merupakan logam yang ringan tetapi mempunyai properti yang tangguh. Dalam bidang industri, titanium digunakan sebagai komponen untuk konstruksi pesawat, sistem pipa pada industri petrokimia, kilang minyak lepas pantai, dan alat olah raga. Dalam bidang kesehatan, titanium juga digunakan sebagai tulang buatan atau implan karena sifatnya yang bio kompatibel [1]. Tetapi secara tribologis, titanium murni mempunyai kelemahan yaitu tidak tahan geseran dan mudah tererosi karena tingkat kekerasan permukaannya yang rendah [2], sekalipun dengan mereduksi ukuran partikel pada material titanium akan meningkatkan ketangguhannya.Titanium mempunyai dua alotropi: pada suhu kamar titanium berada pada struktur kristal hexagonal close-packed (HCP) yang dikenal sebagai fase alfa, dan pada suhu 883 C struktur ini akan berubah menjadi struktur body-centered cubic (BCC) yang dikenal sebagai fase beta [3]. Pada dasarnya, titanium juga merupakan logam yang tahan korosi, karena saat kontak dengan udara terbentuk lapisan titanium oksida (TiO2) yang stabil pada permukaannya.

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“…A strong positive correlation was found between them, whilst the rotational temperature, the electron temperature and density had little correlation with the nitriding degree. It should be noted that the XRD pattern of the irradiated titanium remains that of Ti metal (a phase) [10]. That is, it consists of an interstitial solid solution of nitrogen in the closed-packed hexagonal lattice of titanium.…”

Section: Surface Modification To Several Hundreds Of Nanometer Depth mentioning

confidence: 99%

“…Another example is surface modification of various functional metal surfaces, where the reactions to several tens of nanometers from the surface are essential to improve the characteristics of the substrate materials. For instance, Gicquel et al [10] studied the relationship between plasma and nitrides in nitriding of titanium. They showed that the discharge condition drastically changed the nitrogen concentration to the several hundreds of nanometer depth.…”

Section: Surface Modification To Several Hundreds Of Nanometer Depth mentioning

confidence: 99%

Plasma diagnostics in plasma processing for nanotechnology and nanolevel chemistry

Akatsuka

2004

Science and Technology of Advanced Materials

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The author reviews the role of various plasma diagnostics in plasma processing for nanotechnology, and points out some essential methods of spectroscopic methods to diagnose plasmas for nanoprocessing. Two experimental examples are discussed between the characteristics of nanomaterials and plasma parameters. One is measurement of rotation temperature in processing of carbon nanotube. The other is that of vibrational temperature in surface nitriding of titanium by nitrogen plasma processing. We summarize what to measure and how to measure them from the technical viewpoint of plasma diagnostics. q

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Plasma and nitrides: application to the nitriding of titanium

Cited by 48 publications

References 10 publications

Nitridated mesoporous Li4Ti5O12 spheres for high-rate lithium-ion batteries anode material

Nitridated mesoporous Li4Ti5O12 spheres for high-rate lithium-ion batteries anode material

Pembentukan Titanium Nitrida (TiN) dengan Proses Nitriding pada Titanium Murni Menggunakan Plasma Densitas Tinggi

Plasma diagnostics in plasma processing for nanotechnology and nanolevel chemistry

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