Results 91 to 100 of about 1,165 (208)

Small-scale mechanical properties of constitutive phases within a polycrystalline cubic boron nitride composite [PDF]

open access: yes, 2019
Micromechanical properties of a polycrystalline cubic boron nitride (PcBN) composite have been assessed by statistical analysis of data gathered from experimental massive nanoindentation.
Llanes Pitarch, Luis Miguel   +4 more
core   +1 more source

Numerical determination of thermoelectric parameters for two-stage sintering of cBN–Al system samples in a high-pressure cubic cell

open access: yesФізика і хімія твердого тіла
Preliminary numerical modeling of coupled electric and thermal fields in a six-punch HPA during reaction sintering of massive samples of PCBN has been performed.
Oleksiy Liudvichenko   +3 more
doaj   +1 more source

Investigation on Cutting Performance of Micro-Textured Cutting Tools

open access: yesMicromachines, 2019
This paper explores the influence of micro textures on cutting performance of polycrystalline cubic boron nitride (PCBN) tools from two aspects, that is, tool wear and machined surface roughness.
Qinghua Li   +3 more
doaj   +1 more source

Ultrahard Polycrystalline Cubic Boron Nitride Composite through Hybrid Laser/Waterjet Heat (LWH) Treatment

open access: yes, 2016
Ultra-hard materials that are chemically inert and thermally stable at high temperatures are desirable for enhancing machining and wear performance in demanding chemical and thermal environments.
Shrotriya, Pranav, Zhao, Jingnan
core   +2 more sources

Ophiolite-Hosted Diamond: A New Window for Probing Carbon Cycling in the Deep Mantle

open access: yesEngineering, 2019
As reported in our prior work, we have recovered microdiamonds and other unusual minerals, including pseudomorph stishovite, moissanite, qingsongite, native elements, metallic alloys, and some crustal minerals (i.e., zircon, quartz, amphibole, and rutile)
Dongyang Lian, Jingsui Yang
doaj   +1 more source

Influence of the microstructure on the contact damage behavior of polycrystalline cubic boron nitride

open access: yes, 2021
In this work the influence of microstructure on the contact damage of polycrystalline cubic boron nitride (Pc-BN) is studied. Pc-BN is a superhard composite material constituted by c-BN particles and a binder matrix of either metallic or ceramic nature.
openaire   +2 more sources

Failure and Control of PCBN Tools in the Process of Milling Hardened Steel

open access: yesMetals, 2019
The polycrystalline cubic boron nitride (PCBN) milling tool can be used in the mold industry to replace cemented carbide tools to improve machining efficiency and quality. It is necessary to study the tool wear and failure mechanism to increase machining
Guangyue Wang   +3 more
doaj   +1 more source

Boron nitride thin films on Si(100) by metal organic chemical vapour deposition

open access: yes, 1993
Crystalline boron nitride thin films have been deposited on silicon substrates by MO-CVD at different temperatures using a single source III-V precursor in N2 ambient. The deposited films are characterized by XRD and IR techniques.
Sarala Devi, G., Roy, Sujit, Rao, V. J.
core   +1 more source

The Influence of PCBN Inserts Microgeometry on Cutting Forces, Surface Roughness, and Tool Wear When Milling Inconel 718

open access: yesAdvances in Mechanical and Materials Engineering
This study investigates the effect of cutting edge microgeometry on the milling of Inconel 718, a superalloy widely used in aircraft engine components. Face milling tests were conducted using a Ø63 mm tool with unevenly distributed polycrystalline cubic ...
Marcin Szpunar   +2 more
doaj   +1 more source

Finish machining of hardened steel by face milling using uncoated and TiSiN and TiAlN coated PCBN tools

open access: yesТехнічна інженерія
The article presents the results of experimental studies on the influence of various cutting regimes on the surface roughness of high-hardness hardened steel obtained after face milling with polycrystalline cubic boron nitride (PCBN) tools, both uncoated
Ya.Р. Kovalenko, P.Р. Melnychuk
doaj   +1 more source

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