Results 31 to 40 of about 16,577 (270)

Application of the Improved Grinding Technology to Freeform Surface Manufacturing

Photonics, 2023
In order to meet the manufacturing requirements of modern space remote sensors for high-precision freeform optical parts, the grinding technology and its application were studied.
Lirong Peng, Xingchang Li, Lingzhong Li, Qiang Cheng, Xiao Luo, Xiaoqin Zhou, Xuejun Zhang   +6 more
doaj   +1 more source

A Self-Established “Machining-Measurement-Evaluation” Integrated Platform for Taper Cutting Experiments and Applications

Micromachines, 2021
Taper-cutting experiments are important means of exploring the nano-cutting mechanisms of hard and brittle materials. Under current cutting conditions, the brittle-ductile transition depth (BDTD) of a material can be obtained through a taper-cutting ...
Xudong Yang, Zexiao Li, Linlin Zhu, Yuchu Dong, Lei Liu, Li Miao, Xiaodong Zhang   +6 more
doaj   +1 more source

Evaluating subsurface damage in optical glasses [PDF]

Journal of the European Optical Society-Rapid Publications, 2011
Hard brittle materials (e.g. glasses and ceramics) increasingly appeal to general interests because of their excellent physical, mechanical and chemical properties such as super hardness and strength at extreme temperature and chemical stability.
Wang Jian, Li Yaguo, Han Jinghua, Xu Qiao, Guo Yinbiao   +4 more
doaj   +1 more source

Cutting of Hard and Brittle Materials with a Microtool.

Journal of the Japan Society for Precision Engineering, 2001
Many reports on the cutting of hard and brittle materials such as single crystalline silicon and glass have been published so far, however, obtainable shapes have been limited because only turning tools or indenters have been used for cutting tools. From this point of view, in this study, an end mill-like microtool was adopted in order to machine by ...
openaire   +2 more sources

Extremely Thin Metal Foil Blades as Cutting Tools for Hard and Brittle Materials

MATEC Web of Conferences, 2018
The manufacturing costs of semiconductor products such as silicon wafers can be reduced by decreasing the kerf loss. In addition, a decrease in the kerf loss leads to an effective utilization of rare materials, which is environmentally beneficial from ...
Sakamoto Satoshi, Akaoka Sanshiro, Gemma Masaya, Kondo Yasuo, Yamaguchi Kenji, Yamaguchi Mitsugu, Yakou Takao   +6 more
doaj   +1 more source

Affecting the Properties of Copper–Graphene Electroconductive Composite by Severe Plastic Deformation

Advanced Engineering Materials, EarlyView.
Copper‐based composites enhanced with carbon feature convenient mechanical properties and favorable electric conductivity. Processing via deformation and thermomechanical treatments can introduce advantageous microstructures further enhancing their performance. Herein, copper–graphene powder‐based composites are directly consolidated via rotary swaging
Radim Kocich, Lenka Kunčická, Pavel Czernek, Zifan Wang   +3 more
wiley   +1 more source

A comparative study on ultrasonic machining of hard and brittle materials [PDF]

Journal of the Brazilian Society of Mechanical Sciences and Engineering, 2004
Precision abrasive processes are commonly employed to machine glasses, single crystals and ceramic materials for various industrial applications. Until now, precision machining of hard and brittle solids are poorly investigated in Brazil from the fundamental and applied point of views.
Guzzo, P. L., Shinohara, A. H., Raslan, A. A.   +2 more
openaire   +3 more sources

Impact of MgO Additions on the Oxidation Resistance and Compression Behavior of Vanadium Alloys

Advanced Engineering Materials, EarlyView.
An increase in oxidation resistance at 600 °C is achieved for alloys containing more than 2.5 wt.% MgO. It has been established that, along with V2O5, MgO6V2, and Mg2O7V2 are formed, which are presumed to enhance oxidative stability. Furthermore, the possible transformation of Mg‐vanadates through reaction with CO2, which presumably occurs in this ...
Ievgen Solodkyi, Mathias Galetz, Georg Hasemann, Fabian Lanoy, Emma White, Manja Krüger   +5 more
wiley   +1 more source

Depth-sensing ductile and brittle deformation in 3C-SiC under Berkovich nanoindentation

Materials & Design, 2021
The interplay between ductile and brittle deformation modes in hard brittle materials exhibits a strong size effect. In the present work, indentation depth-dependent deformation mechanisms of single-crystal 3C-SiC under Berkovich nanoindentation are ...
Liang Zhao, Junjie Zhang, Janine Pfetzing, Masud Alam, Alexander Hartmaier   +4 more
doaj   +1 more source

Distinct Microstructural Characteristic Lengths Defining Notch Fatigue Crack Initiation and Propagation, and Defect Tolerance in Advanced Steels

Advanced Engineering Materials, EarlyView.
Schematic representation of modes of microcrack nucleation, growth and temporary arrestment at different boundaries, with the criteria for crack propagation in three scenarios: (1) large notch, (2) defect/small sharp notch, and (3) long crack. This work revisits and integrates results on the fatigue behavior of advanced bainitic steels (in particular ...
Lucia Morales‐Rivas
wiley   +1 more source