The role of the thermal factor in the wear mechanism of ceramic tools: Part 1. Macrolevel

Kuzin, V. V.; Grigoriev, S. N.; Волосова, М. А.

doi:10.3103/s1068366614060099

Cited by 75 publications

(25 citation statements)

References 9 publications

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“…It is seen (Figure 13a) that the surface of the ceramic specimen includes a pronounced network of abrasive scratches, which are traditional for ceramic tools that are subjected to diamond sharpening. Besides, many craters from grains torn out during grinding are found on the ceramic surface previously shown in a series of previous works [17,21,25]. The noted features are defects of abrasive processing in essence, which are inherent in the process physics.…”

Section: Influence Of Dlc Coatings On the Transformation Of The Sintered Ceramic Blanks Characteristicsmentioning

confidence: 64%

“…The sintering process of ceramic powders involves providing an increased temperature mode and is very technologically complex. In sintering, grain growth can occur; a significant amount of residual glassy phase can be formed, which worsens the hardness and strength of the material during high-temperature operation [20,21]. Excessive porosity can form at a low rate of grain-boundary diffusion and insufficient shrinkage of the powder composition, which sharply worsens the sintered ceramics' fracture toughness [22][23][24].…”

Section: Introductionmentioning

confidence: 99%

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Development of DLC-Coated Solid SiAlON/TiN Ceramic End Mills for Nickel Alloy Machining: Problems and Prospects

et al. 2021

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The study is devoted to the development and testing of technological principles for the manufacture of solid end mills from ceramics based on a powder composition of α-SiAlON, β-SiAlON, and TiN additives, including spark plasma sintering powder composition, diamond sharpening of sintered ceramic blanks for shaping the cutting part of mills and deposition of anti-friction Si-containing diamond-like carbon (DLC) coatings in the final stage. A rational relationship between the components of the powder composition at spark plasma sintering was established. The influence of optimum temperature, which is the most critical sintering parameter, on ceramic samples’ basic physical and mechanical properties was investigated. DLC coatings’ role in changing the surface properties of ceramics based on SiAlON, such as microrelief, friction coefficient, et cetera, was studied. A comparative analysis of the efficiency of two tool options, such as developed samples of experimental mills made of SiAlON/TiN and commercial samples ceramic mills based on SiAlON, doped with stabilizing additives containing Yb when processing nickel alloys (NiCr20TiAl alloy was used as an example). DLC coatings’ contribution to the quantitative indicators of the durability of ceramic mills and the surface quality of machined products made of nickel alloy is shown.

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Section: Influence Of Dlc Coatings On the Transformation Of The Sintered Ceramic Blanks Characteristicsmentioning

confidence: 64%

Section: Introductionmentioning

confidence: 99%

Development of DLC-Coated Solid SiAlON/TiN Ceramic End Mills for Nickel Alloy Machining: Problems and Prospects

et al. 2021

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“…Improving efficiency basically entails improving cutting conditions (cutting speed, feed) without losing the quality of the machined surface. Since this review emphasises material categories, Figure 1 shows three groups of tool materials that are usually applicable for processing Ni-based alloys [104][105][106][107][108][109][110][111][112][113][114][115][116][117][118][119][120][121][122]. Next, the details of each are discussed.…”

Section: Type Of Tool Materials For Machining Nickel-based Alloysmentioning

confidence: 99%

Ceramic Cutting Materials and Tools Suitable for Machining High-Temperature Nickel-Based Alloys: A Review

Seleznev

Pinargote

Smirnov

2021

Metals

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Nickel-based superalloys are attractive to many industrial sectors (automotive, military, energy, aerospace, etc.). However, their physical properties make them difficult to machining using traditional tools. Therefore, new materials for the machining of Ni-based alloys are required. Ceramic-based composites could act as a tool to replace the current materials. The incentives for this paper are to provide an overview of existing ceramic composites and draw some conclusions that will help in solving the problem of choosing materials for the processing of Ni-based superalloys. Despite the diversity of ceramic composites in this work, the possibility of using the SiAlON ceramic for Ni-based alloy machining is highlighted.

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“…If, in the general case, thermodynamic flows of heat, matter, physicochemical transformations and additional influences pass in the secondary structures of the tribosystem "tool -processed material" [18][19][20][21][22], then the change in aircraft production over time will be equal to…”

Section: Expandingmentioning

confidence: 99%

Thermodynamic Model of Wear Intensity of Cutting Tools With Coatings

et al. 2021

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On the basis of thermodynamics of nonequilibrium processes the model is developed, allowing to predict wear resistance and others tribotechnical parametres hardloaded high-temperature interfaces. For the predicted adaptation of friction surfaces and a decrease in the wear rate, it is necessary to use tool materials and wear-resistant coatings containing chemical elements and compounds capable, under certain conditions, of chemically interacting with the material being processed and with the environment, creating non-equilibrium secondary structures with negative entropy production. Contributions of additional impacts on the cutting zone due to the use of coolant, unsteadiness of the cutting mode elements, and other relevant factors should also be considered.

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The role of the thermal factor in the wear mechanism of ceramic tools: Part 1. Macrolevel

Cited by 75 publications

References 9 publications

Development of DLC-Coated Solid SiAlON/TiN Ceramic End Mills for Nickel Alloy Machining: Problems and Prospects

Development of DLC-Coated Solid SiAlON/TiN Ceramic End Mills for Nickel Alloy Machining: Problems and Prospects

Ceramic Cutting Materials and Tools Suitable for Machining High-Temperature Nickel-Based Alloys: A Review

Thermodynamic Model of Wear Intensity of Cutting Tools With Coatings

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