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Eli Ohana and Dror Malka
To test silicon photonics component performances, a silicon (Si) grating coupler (GC) is used to couple the light from a single-mode fiber (SMF) into the chip. However, silicon nitride (Si3N4) waveguides have recently become more popular for realizing ph...
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Ashish Kumar Srivastava, Suryank Dwivedi, Ambuj Saxena, Deepak Kumar, Amit Rai Dixit, Gyanendra Kumar Singh, Javed Khan Bhutto and Rajesh Verma
In the present study, the surface composite Al359/Si3N4/Eggshell is prepared by friction stir processing (FSP). The effect of reinforced particle volume fraction on the microstructural and tribological properties of the Al359/Si3N4/Eggshell surface compo...
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Vitali Podgursky, Asad Alamgir, Maxim Yashin, Taivo Jõgiaas, Mart Viljus, Taavi Raadik, Mati Danilson, Fjodor Sergejev, Andreas Lümkemann, Jan Kluson, Jozef Sondor and Andrei Bogatov
The study investigates thermal stability and high temperature tribological performance of a-C:H:Si diamond-like carbon (DLC) coating. A thin alumina layer was deposited on top of the a-C:H:Si coating to improve the tribological performance at high temper...
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Zuli Mao and Li Yang
We report the synthesis of SiC/Si3N4 coatings on carbon/carbon composites via pack cementation and heat treatment with nitrogen gas, the latter of which improves the coating wear resistance. X-ray diffraction (XRD), scanning electron microscopy (SEM), en...
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Matteo Zanocco, Elia Marin, Francesco Boschetto, Tetsuya Adachi, Toshiro Yamamoto, Narisato Kanamura, Wenliang Zhu, Bryan J. McEntire, B. Sonny Bal, Ryutaro Ashida, Osam Mazda and Giuseppe Pezzotti
Functional coatings are commonly applied to biomaterials in order to improve their properties. In this work, polyethylene was coated with a silicon nitride (Si3N4) powder using a pulsed laser source in a nitrogen gas atmosphere. Several analytical techni...
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Yanxiong Xiang, Lingling Huang and Changwei Zou
Cr?Si?N nanocomposite coatings were deposited by multi-arc ion plating under different bias voltages. The influences of bias voltage on composition, microstructure, surface morphology and mechanical properties of Cr?Si?N nanocomposite coatings were inves...
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Li-Chun Chang, Bo-Wei Liu and Yung-I Chen
Monolithic Hf–Si–N coatings and multilayered Hf–Si–N coatings with cyclical gradient concentration were fabricated using reactive direct current magnetron cosputtering. The structure of the Hf–Si–N coatings varied from...
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Li-Chun Chang, Yu-Zhe Zheng, Yung-I Chen, Shan-Chun Chang and Bo-Wei Liu
High-Si-content transition metal nitride coatings, which exhibited an X-ray amorphous phase, were proposed as protective coatings on glass molding dies. In a previous study, the Zr–Si–N coatings with Si contents of 24–30 at.% exhibited ...
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Bo Wu, Guangze Tang, Xiaoli Zhao, Liqin Wang and Le Gu
High-current pulsed electron beam (HCPEB) irradiation commonly induces crater-like cavities on irradiated surfaces, making them tribologically resemble textured ones. However, the effect of crater-like cavities on the lubricated tribological properties o...
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Manab Mallik, Kalyan Kumar Ray and Rahul Mitra
The oxidation behavior of ZrB2-20 vol % SiC and ZrB2-20 vol % SiC-5 vol % Si3N4 composites prepared by hot-pressing and subjected to isothermal exposure at 1200 or 1300 °C for durations of 24 or 100 h in air, as well as cyclic exposure at 1300 °C for 24 ...
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