Effects of material microstructure and surface microscopic geometry on the performance of ceramic cutting tools in intermittent turning

Cui, Xiaobin; Wang, Dong; Guo, Jingxia

doi:10.1016/j.ceramint.2018.01.269

Cited by 7 publications

(4 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The wear rate and volume decreased with increasing NbC addition. The composition A95N5 presented the highest value of wear rate, which corroborates the deleterious influence of porosity, determined by investigations of Cui et al 22 . Cui et al observed that damage of the ceramic tool material grows as material porosity increases from 0.5% to 2.5%, tough variation of material porosity had less effects on the damage within the Al 2 O 3 -based ceramic tool reinforced by micro (W, Ti)C.…”

Section: Resultssupporting

confidence: 85%

Influence of NbC Content on the Wear Resistance of Alumina/Niobium Carbide Tools

et al. 2021

View full text Add to dashboard Cite

Wear resistance is a fundamental property which defines the lifetime of cutting tools, but the investigation of wear performance of alternative hard materials for traditional WC-Co composites are recent. The present work evaluated the pin-on-disk wear behavior and mechanical properties, i.e., hardness and fracture toughness of spark plasma sintered Al 2 O 3 matrix composites with additions of 5, 15, 25 or 30%wt of niobium carbide NbC. The wear resistance was observed to increase as a function of the NbC content, even though the hardness reached a plateau at 25%wt NbC. The composite behavior was compared to that of other alumina composite tool materials proving to be a promising material for applications such as ceramic cutting tools. The composition A95N5 presented the best combination of values of wear rate: 8.9 mm 3 /N.m, hardness equal to (17.36±1.72) GPa and fracture toughness of (3.2±0.6) MPa. m 1/2 .

show abstract

Section: Resultssupporting

confidence: 85%

Influence of NbC Content on the Wear Resistance of Alumina/Niobium Carbide Tools

et al. 2021

View full text Add to dashboard Cite

show abstract

“…Some of them based on decreasing cutting force by changing speed, federate and depth of cut [8,9,10]. Another methods use special tool geometry [11,12,13]. Some methods allow to increase machining accuracy by toolpath and stock removal order [14,15,16,17].…”

Section: Large-size Thin-walled Housing Ring Turning Accuracy During mentioning

confidence: 99%

Constructive Assessment of an Attainable Accuracy at Large-Size Thin-Walled Housing Rings Machining by Modelling of Cutting Force Effect

Starovoitov¹,

Sattarov²,

Хадиуллин³

2020

JESTR

View full text Add to dashboard Cite

Large-size thin-walled housing rings machining accuracy problem was described. Produceability rating based on part stiffness was offered. Geometrical mechanical compliance simulation model of large-size thin-walled aviation engine housing rings was developed. Comparing of calculated geometrical mechanical compliance for different real parts and their experimental machining deviation was performed. The results of this comparing confirmed that geometrical mechanical compliance can be use as machining accuracy criteria for large-size thin-walled aviation engine housing rings. Geometrical mechanical compliance criteria value was found during real parts machining. This value shows the boundary parts design conditions when is necessary to use nonconventional technological decisions (tool, cutting mode, equipment, etc) to provide required machining accuracy.

show abstract

“…Previously, it was believed that the coating was able to "heal" surface defects by filling them [8]. Practice shows that a coating with a thickness of not more than 4 µm (a coating of greater thickness flakes off from ceramic samples) is only able to partially level surface defects-it is able to fill in small scratches or grain chips, but does not allow leveling deep grooves and filling voids from torn grains [9].…”

Section: Introductionmentioning

confidence: 99%

Improving the Quality of Ceramic Products by Removing the Defective Surface Layer

Metel,

Volosova,

Mustafaev

et al. 2024

Ceramics

View full text Add to dashboard Cite

The surface of ceramic products manufactured using diamond grinding is replete with shallow scratches, deep grooves and other defects. The thickness of the defective layer amounts to 3–4 µm and it must be removed to increase wear resistance of the products when exposed to intense thermomechanical loads. In this study, removal of the defective layers from samples made of ZrO2, Al2O3 and Si3N4 with a beam of fast argon atoms was carried out with a stripping rate of up to 5 µm/h. To prevent contamination of the source of fast argon atoms by the sputtered dielectric material, the beam was compressed and passed to the sample through a small hole in a wide screen. Due to the removal of the defective layer, abrasive wear decreased by an order of magnitude and the adhesion of coatings deposited on the cleaned ceramic surfaces improved significantly.

show abstract

Effects of material microstructure and surface microscopic geometry on the performance of ceramic cutting tools in intermittent turning

Cited by 7 publications

References 24 publications

Influence of NbC Content on the Wear Resistance of Alumina/Niobium Carbide Tools

Influence of NbC Content on the Wear Resistance of Alumina/Niobium Carbide Tools

Constructive Assessment of an Attainable Accuracy at Large-Size Thin-Walled Housing Rings Machining by Modelling of Cutting Force Effect

Improving the Quality of Ceramic Products by Removing the Defective Surface Layer

Contact Info

Product

Resources

About