Mechanical Properties and Corrosion Resistance of AlCrNbSiTiN High Entropy Alloy Nitride Coatings

Lou, Bih-Show; Lin, Yu-Chen; Lee, Jyh-Wei

doi:10.3390/coatings13101724

Cited by 9 publications

(3 citation statements)

References 43 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Also, Ti-TiN-(Ti,Al,Cr)N composite coatings improve tribological properties, increase wear resistance and heat resistance during high-speed processing [40,41]. Nanocoatings [42][43][44][45][46], due to their small coating thickness and high hardness, contribute to increased durability; these factors make it possible to reduce the requirements for reliability and repeatability of the control signal based on monitoring the technological system [47][48][49][50].…”

Section: Introductionmentioning

confidence: 99%

A new algorithm for recreating the technological process of high-speed multicoordinate processing based on improving key indicators of image recognition

Pivkin,

Ershov,

Grechishnikov

et al. 2024

Optics, Photonics, and Digital Technologies for Imaging Applications VIII

View full text Add to dashboard Cite

Solving the problem of reverse engineering as a key element of the production process and its technological preparation has a key role. This work demonstrates for the first time the possibility of preparing production and collecting key indicators, which allows you to recreate a digital twin of the technological process and display the technological aspects of the design as a result of collecting key indicators. Such indicators include the width of the cut layer, the cutting zone of a conical cutter during multi-axis positioning, obtained based on the results of processing a group of images of processed products. Actual technological indicators of the technological process can be identified and numerically formalized by assessing the shape of the helical surface on a class of parts obtained as a result of multi-coordinate processing, which proves the possibility of applied application of the method in the structure of the production process in real time. As a result, the use of a new algorithm will reduce the likelihood of receiving defective products and recreate the technological process based on processing a set of product images. The work constructs an analytical model for the automated creation of processing paths based on improved B-splines, which can significantly improve smoothness compared to numerical methods for generating paths. The actual technological indicators of the machining process can be identified and numerically formalized dependencies by determining the influence of the helical surface on the precise positioning of the end mill with compensation along each axis during 5-axis machining, obtained as a result of multi-axis machining, which proves the possibility of applied application of the method in the production process in the mode real time.

show abstract

Section: Introductionmentioning

confidence: 99%

A new algorithm for recreating the technological process of high-speed multicoordinate processing based on improving key indicators of image recognition

Pivkin,

Ershov,

Grechishnikov

et al. 2024

Optics, Photonics, and Digital Technologies for Imaging Applications VIII

View full text Add to dashboard Cite

show abstract

“…Also, Ti-TiN-(Ti,Al,Cr)N composite coatings improve tribological properties, maintain durability and heat resistance during high-speed processing [41,42]. Nanocoatings [43][44][45][46][47], due to their small coating thickness and high hardness, provide stability.…”

Section: Introductionmentioning

confidence: 99%

Digital twin of the technological process for grinding helical flutes of a cutting tool

Pivkin

2024

Real-Time Processing of Image, Depth, and Video Information 2024

View full text Add to dashboard Cite

Helical flutes are the most important elements of axial cutting tools. The technological process for manufacturing helical flutes is multifactorial, complex and difficult to quickly calculate online. The production of flutes is carried out on a multiaxis grinding machine with a conical or cylindrical grinding wheel. The task is also complicated by the fact that in more than one section the shape of the helical flute does not match the grinding wheel. Therefore, the development of technology and its preparation requires a long time. The work proposes a digital twin for the production of helical flutes with the input results of processing 40 variants of technological processes and compares them with the results of processing images of helical surfaces in real time. The work for the first time established an analytical connection between the shape of the grinding wheel, the geometry of the front helical surface of the cutter, the trajectory of movement and the location of the wheel, structured into a system of signals from sensors with a controlled monitoring effect per unit of time. This made it possible to install real-time control indicators to assess accuracy in the processing area and, based on the indicator, to form a control action to ensure the production of suitable products. This work allows us to lay the crating for a new direction in the field of industrial production of cutting tools. The use of real-time data in the current time window to evaluate future spatio-temporal information of the process state makes it possible to continuously adjust the movement of the grinding wheel with a given error and deviation, which is ensured by a continuous analytical solution that takes into account the basic geometric parameters of the cutter and the grinding wheel.

show abstract

“…There exist a number of technologies for surface treatment and modification, including thin film deposition [3], ion implantation [4], surface treatment by high energy fluxes (laser or electron beams) [5][6][7], etc. Nowadays, the electron beam surface alloying (EBSA) methods are among the most promising.…”

Section: Introductionmentioning

confidence: 99%

Fabrication and Characterization of Titanium Borides by Electron Beam Surface Alloying

Padikova,

Nedeva,

Dunchev

et al. 2023

Coatings

View full text Add to dashboard Cite

This study shows the possibility of the fabrication of titanium borides by an alloying of a titanium substrate with boron powder via a scanning electron beam. During the electron beam alloying experiments, the speed movement of the specimens was varied, where it was 4 and 6 mm/s. The thickness of the alloyed zone formed by the lower velocity of the movement of the workpiece is greater than that of the coating obtained by the higher speed movement. The phase composition of the coatings is in the form of the TiB2 phase, as well as some amount of undissolved boron in both considered cases. In the case of the lower speed of the movement of the sample, the undissolved boron is within the whole volume of the alloyed zone, while at the higher speed movement, it is on the top of the specimen. The hardness of the obtained coatings by the higher speed of the specimen movement reached values of about 4500 HV. Considering the values of the surface alloy fabricated via the lower velocity movement of 4 mm/s, it is about 2500 HV, which is lower than that of the one obtained by the 6 mm/s speed of the sample movement. The result obtained for the friction coefficient (COF) for the specimen alloyed by the speed of the specimen motion of 4 mm/s is 0.40; the value for the coating obtained at a speed movement of 6 mm/s is 0.34. In both cases, these values are lower than that of the titanium substrate.

show abstract

Mechanical Properties and Corrosion Resistance of AlCrNbSiTiN High Entropy Alloy Nitride Coatings

Cited by 9 publications

References 43 publications

A new algorithm for recreating the technological process of high-speed multicoordinate processing based on improving key indicators of image recognition

A new algorithm for recreating the technological process of high-speed multicoordinate processing based on improving key indicators of image recognition

Digital twin of the technological process for grinding helical flutes of a cutting tool

Fabrication and Characterization of Titanium Borides by Electron Beam Surface Alloying

Contact Info

Product

Resources

About