Results 61 to 70 of about 49,738 (310)

Micro-Hole Drilling on Silicon Nitride Ceramics in Ethanol

open access: yesTribology Online, 2009
Micro-hole drilling of engineering ceramics has potential for application to fuel injection nozzles and fiber spinning nozzles, etc. To date among engineering ceramics, less study has been reported on the micro-hole drilling of silicon nitride.
Tsuneaki Yamabe   +3 more
doaj   +1 more source

A novel eccentric lapping machine for finishing advanced ceramic balls

open access: yes, 2001
Advanced ceramic balls are used extensively in hybrid precision ball bearings and show advantages in high speed, high temperature, high load and hostile environment.
Kang, J, Hadfield, M
core   +1 more source

Photothermal‐Activated Antibacterial Amyloid‐Polyphenol‐Iron Hydrogels for Synergistic Wound Healing

open access: yesAdvanced Healthcare Materials, EarlyView.
We report a thermally triggered supramolecular hydrogel (LTFe) formed by Fe3+ and tannic acid on lysozyme amyloid fibrils. Fe3+ enables rapid gelation and photothermal transduction with an efficiency of 88.56%. The LTFe hydrogel exhibits excellent biocompatibility, potent antibacterial activity against E. coli and S.
Di Wu   +8 more
wiley   +1 more source

Research progress on sintering additive used for high thermal conductivity silicon nitride ceramics

open access: yesFenmo yejin jishu
Silicon nitride (Si3N4) is considered to be the best ceramic material for the comprehensive properties. High thermal conductivity and the excellent mechanical properties make it widely used as the ceramic substrate in electric vehicles and hybrid ...
WANG Yuelong   +7 more
doaj   +1 more source

Stress changes in silicon nitride thin films on thermal cycling and deconvolution of seperate contributions

open access: yes, 2022
S.443-453A correlation between stress in amorphous silicon nitride films and their composition has been established. This has led to the deposition of low-stressed films at low temperatures.
Baumann, H., Sah, R.E.
core  

Oberflächenmodifizierung von dichtem Siliziumnitrid durch Ionenstrahltechniken

open access: yes, 2022
S.319-323The use of dense Silicon Nitride under wear and at high temperatures is restricted by various damaging processes, like creep, oxidation and subcritical crack growth. Most of these processes are determined by surface effects.
Herrmann, M., Taut, C., Mucha, A.
core   +1 more source

Mixed‐Metal Promotion in a Manganese‐Molybdenum Oxynitride as Catalyst to Integrate C─C and C─N Coupling Reactions for the Direct Synthesis of Acetonitrile from Syngas and Ammonia

open access: yesAdvanced Materials, EarlyView.
Transition metal oxy/carbo‐nitrides show great promise as catalysts for sustainable processes. A Mn‐Mo mixed‐metal oxynitride attains remarkable performance for the direct synthesis of acetonitrile, an important commodity chemical, via sequential C─N and C─C coupling from syngas (C1) and ammonia (N1) feedstocks.
M. Elena Martínez‐Monje   +7 more
wiley   +1 more source

Hydroxyapatite coating on silicon nitride surfaces using the biomimetic method

open access: yesMaterials Research, 2008
Silicon nitride based ceramics are promising candidates for biomedical applications due to their chemical and dimensional stability associated to suitable mechanical strength and relatively high fracture toughness.
Cecilia Chaves Guedes e Silva   +4 more
doaj   +1 more source

Examination of the material removal mechanisms during the lapping process of advanced ceramic rolling elements

open access: yes, 2005
Two types of HIPed Si3N4 bearing ball blanks with different surface hardness and fracture toughness were lapped under various loads, speeds, and lubricants using a novel eccentric lapping machine.
Kang, J, Hadfield, M
core   +1 more source

Silicon Microdisk Resonators for Nonlinear Optics and Dynamics [PDF]

open access: yes, 2009
Silicon is incredibly well-studied as an electronic material. Since the out-migration of William Noyce, Gordon Moore, and the rest of the original Fairchild Semiconductor class from Shockley Semiconductor, silicon has only grown in prominence.
Johnson, Thomas James
core   +1 more source

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