Results 61 to 70 of about 2,658 (198)

Social emotional skills (SES) among lecturers in relation students performance [PDF]

, 2018
Social emotional skills (SES) of a lecturer are considered to play a vital role towards student performance. Despite of the fact, when it comes to Technical Vocational Education and Training (TVET), very little research is found on the importance and ...
Dahri, Salma
core  

Wear characteristics of PCBN tools in ultra-precision machining of stainless steel at low cutting speeds [PDF]

, 2003
Polycrystalline cubic boron nitride (PCBN) cutting tools are widely used in the ultra-precision machining of stainless steel mould inserts for the injection moulding of optical lenses.
B.K.A. Ngoi, Liew, Willey Yun Hsien, Y.G. Lu   +2 more
core   +1 more source

Current Trends and Future Perspective for Cold Spray Metal‐Ceramic Composites

Advanced Engineering Materials, Volume 27, Issue 10, May 2025.
The use of cold spray (CS) technology for creating cermet deposits, combining ceramic and metallic components, is advancing rapidly. Cermets offer excellent temperature handling and erosion resistance for diverse applications. This review outlines the current state of the art, focusing on the deposition dynamics and strategies to optimize the ...
Romario A. Wicaksono, Amir Ardeshiri Lordejani, Sara Bagherifard   +2 more
wiley   +1 more source

Simulation and experimental study on the self-sharpening mechanism of polycrystalline cBN abrasive grit based on Voronoi diagram

Journal of Materials Research and Technology
Polycrystalline cBN (PcBN) abrasive grits have a unique microstructure that contributes to the self-sharpening ability of grinding wheels. However, their self-sharpening mechanism is still unknown, resulting in uncontrollable wear.
Yejun Zhu, Lin Wang, Zhaoqin Zhang, Maohua Xiao   +3 more
doaj   +1 more source

Investigation on surface morphology and crystalline phase deformation of Al80Li5Mg5Zn5Cu5 high-entropy alloy by ultra-precision cutting

Materials & Design, 2020
The materials with high precision，easy machining and excellent micro-machinability are considered significant on the fabrication of precision components, the outstanding comprehensive properties of Al80Li5Mg5Zn5Cu5 high-entropy alloy just meet these ...
Zhiyuan Huang, Yuqi Dai, Zhen Li, Guoqing Zhang, Chuntao Chang, Jiang Ma   +5 more
doaj   +1 more source

Effect of Ti3AlC2 content on microstructure and properties of PcBN materials

Jin'gangshi yu moliao moju gongcheng
The monolithic PcBN composite tool materials were prepared at 5.5 GPa and 1450 ℃ with different contents of Ti3AlC2 as the binder phase. The effects of different mass fractions of Ti3AlC2 on the phase composition, microstructure, and mechanical ...
Jinming MA, Changjiang XIAO, Hongjun TAO, Qunfei ZHANG, Lihui TANG, Jianfeng CAO, Yuan LI, Shijie ZHOU, Yulin TANG, Yachao CHEN, Zhengxin LI   +10 more
doaj   +1 more source

Study on Surface Roughness of Gcr15 Machined by Micro-Texture PCBN Tools

Machines, 2018
This paper applies micro textures to the rake face of PCBN (Polycrystalline Cubic Boron Nitride) tools, including three types of micro textures that are microgroove textures vertical to the cutting edge, microgroove textures parallel to the cutting edge,
Chen Pan, Qinghua Li, Kaixing Hu, Yuxin Jiao, Yumei Song   +4 more
doaj   +1 more source

Wear mechanisms of PcBN tools when machining AISI 316L

Ceramics International, 2021
This paper investigates the machinability of AISI 316L stainless steel without and with NMI treatment, when machined with three different PcBN tool grades: low cBN content (50% vol.), medium (65% vol.) and high (90% vol.). The NMI treatment consisted of resulfurized and Ca-treated steels with two different Si/Al ratio. The tool materials were evaluated
Henrik Persson, Filip Lenrick, Luiz Franca, Jan-Eric Ståhl, Volodymyr Bushlya   +4 more
openaire   +1 more source

Highly Stable Free‐standing Cobalt Niobate with Orthorhombic Structure as Anode Material for Li‐ion Batteries

ChemElectroChem, Volume 11, Issue 4, February 16, 2024.
Niobate‐based compounds have attracted significant attention as Li‐ion battery anode material. A simple and scalable synthesis method for CoNb2O6 powder was realized in this study via a mechanochemical technique for the first time, involving ball milling, pelletizing, and heat treatment.
Yannis De Luna, Shaobo Ma, Guoxing Li, Nasr Bensalah   +3 more
wiley   +1 more source

Evaluation of machining performance of STAVAX with PCBN tools [PDF]

The International Journal of Advanced Manufacturing Technology, 2004
A study was undertaken to investigate the wear characteristics of polycrystalline cubic boron nitride (PCBN) cutting tools and surface integrity during machining of STAVAX (specialised stainless steel) with and without coolant. Plastic deformation and formation of overtempered martensite and white layer (untempered martensite) were the dominant ...
Liew, Willey Yun Hsien, Yuan, Shihao, Ngoi, B. K. A   +2 more
openaire   +2 more sources