Results 11 to 20 of about 492,067 (361)

Reliability Evaluation Based on Mathematical Degradation Model for Vacuum Packaged MEMS Sensor

open access: yesMicromachines, 2022
Vacuum packaging is used extensively in MEMS sensors for improving performance. However, the vacuum in the MEMS chamber gradually degenerates over time, which adversely affects the long-term performance of the MEMS sensor. A mathematical model for vacuum
Guizhen Du   +4 more
doaj   +1 more source

Effects of Powder Feed Rate on Formation of Fully Equiaxed β Grains in Titanium Alloys Fabricated by Directed Energy Deposition

open access: yesMetals, 2020
A near β titanium alloy, Ti5Al2Sn2Zr4Mo4Cr, was fabricated by directed energy deposition (DED) with different powder feed rates to investigate the formation of fully equiaxed β grains.
Qiang Zhang   +7 more
doaj   +1 more source

Effect Of Magnesium Alloy Surface Spray Coating On The Wear Resistance Of Sports Equipment

open access: yesJournal of Applied Science and Engineering, 2022
In testing the wear resistance of sports instruments, Traditional methods are inadequate in predicting the wear performance and fail to predict the wear mass loss under different loads.
Hongtu Zhao
doaj   +1 more source

Study on Wear Resistance of Polyurea Coating on Metal Structures of Lifting Machinery [PDF]

open access: yesCailiao Baohu, 2022
In view of the problem that the metal structures of lifting machinery are easy to be aged and worn in harsh environment, the effects of coating thickness and load on the wear resistance of the coating on the surface of metal structure of crane were ...
XIE Tengfei, MAO Jinrong, ZHOU Yeping
doaj   +1 more source

Significant Improvement in Wear Resistance of CoCrFeNi High-Entropy Alloy via Boron Doping

open access: yesLubricants, 2023
CoCrFeNi high-entropy alloy (HEA) exhibits excellent mechanical properties but relatively poor wear resistance. In particular, when the load reaches a certain level and the deformation mechanism of the CoCrFeNi HEA changes, the formation of shear bands ...
Haitao Zhang   +5 more
doaj   +1 more source

Stress-dependent subsurface structural transformations of gradient nanograin Ti–6Al–4V alloy and its impact on wear behavior

open access: yesJournal of Materials Research and Technology, 2023
Gradient nanograin (GNG) metals possess outstanding resistance to sliding friction and wear. The tribolayer plays a major role in the wear performance of metals. However, the current understanding of the tribolayer in GNG metals is still limited.
Chenglin Wang   +8 more
doaj   +1 more source

Wear maps for TiC composite based coatings deposited on 303 stainless steel [PDF]

open access: yes, 2014
Dry sliding wear (pin-on-disc) tests were carried out under ambient conditions at room temperature for TiC coated and uncoated 303 stainless steel, using alumina as a counterface.
Rasool, G., Stack, M.M.
core   +1 more source

Synthesis of high-purity Ti2SC powder by microwave hybrid heating

open access: yesJournal of Advanced Ceramics, 2016
A novel simple method is presented to synthesize high-purity Ti2SC powder using Ti/C/S and Ti/C/TiS2 systems by microwave hybrid heating at different temperatures in argon atmosphere.
Chunlong Guan, Nana Sun
doaj   +1 more source

Study on Wear Resistance Evolution of Cold-Rolled Strip Flatness Meter Surface-Strengthened Layer

open access: yesMetals, 2023
Seamless flatness rollers are the core equipment for cold-rolled strip flatness detection. The change in wear resistance of the roller surface-strengthened layer has important guiding significance for the prediction of the roller surface life.
Shuai Zhang   +5 more
doaj   +1 more source

Improving of the wear resistance of working parts agricultural machinery by the implementation of the effect of self-sharpening [PDF]

open access: yes, 2016
The failure of the cutting elements of farm machinery is due to the blunting of cutting edges (increase of their radius) till the limit values. The most effective method for increasing the wear resistance of farm machinery is the realization of self ...
Arifa, W.   +6 more
core   +1 more source

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