Investigation into the Peculiarities of Structure Formation and Properties of Copper-Based Powder Pseudoalloys Modified by ZnO and TiN Nanoparticle Additives

Gordeev, Yu. I.; Abkaryan, A. K.; Surovtsev, Alexey; Лепешев, А. А.

doi:10.3103/s1067821219010048

Cited by 5 publications

(2 citation statements)

References 17 publications

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“…Despite the efforts of the world scientific community to solve the global problem of processing non-conductive ceramics and nanoceramics due to the inclusion of the secondary phase, the issue remains unresolved [34,37,47,48,50,51,88,102]. The main issue that hampers the advances is related to the material of the secondary phase, which often is not widely available for use in the conditions of real production [33,34,36,37,40,44,89,103]. Besides, the material of the secondary phase can significantly change the appearance of ceramics, such as transparency and color, which directly affects and restricts the areas of its potential application [7,8,39,104].…”

Section: Discussionmentioning

confidence: 99%

“…-The creation of a new class of nanocomposite ceramics with the inclusion of the conductive phase allowing the machining of blanks in order to obtain the finished product with the use of minimal technological effort and the absence of direct contact between the material and tool, i.e., using the electric discharging methods of machining [33][34][35][36][37][38][39]; -…”

Section: Scientific Problemmentioning

confidence: 99%

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On Electrical Discharge Machining of Non-Conductive Ceramics: A Review

et al. 2019

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The inability of ceramic and nanoceramic processing without expensive diamond tools and with a high-material-removal rate hampers the scope of its potential applications and does not allow humanity to make a full shift to the sixth technological paradigm associated with Kuhn scientific revolutions and Kondratieff's waves and restrains the growth of the economy. The authors completed a review on the research state of ceramic and nanoceramic processing by electrical discharge machining, which is possibly solved by two principal approaches associated with the usage of standard commercially available machine tools. The first approach is related to the introduction of expensive secondary phase; the second approach proposes initiate processing by adding auxiliary electrodes in the form of coating, suspension, aerosol, or 3D-printed layer based on the components of silver, copper, or graphite in combination with an improved dielectric oil environment by introducing graphite or carbon nanoparticles, which is hugely relevant today.Technologies 2019, 7, 55 2 of 16 of cutting tools limits the resulting geometry of the product. Other machining methods such as vibroacoustic machining, laser and electron beam scribing, selective laser sintering with a binder, find their specific place in the processing of ceramics. However, they do not allow the receiving of all geometrically possible shapes of the product without losses on the operational parameters of ceramics [16][17][18].One of the most popular methods for the production of parts, regardless of their hardness, is electrical discharge machining (EDM). However, it requires the material to be conductive [19][20][21]. The process of electrical erosion of the material consists of initiating electric pulses in the interelectrode gap, in the breakdown of the dielectric medium in the gap, in establishing a discharge channel, where the temperature reaches more than 10,000 • C (low-temperature plasma). Due to such temperatures, the material is ablated, the drops of cooled material as eroded debris are washed away by the flow of the dielectric medium, and the electrodes again approach to resume the cycle. Thus, a unique crater-like topology on the surface of the workpiece is created [22][23][24][25].The inability of ceramics and nanoceramics to conduct current hampers the scope of its potential applications and restrains the growth of the progress and the switch to the next technological paradigm that most of the scientists associate with the term "nano" [26][27][28][29][30][31][32].Thus, it can be concluded that the study and development of a method for electrical discharge machining of non-conductive ceramics and nanoceramics are incredibly relevant today.The authors propose to apply the dialectical approach of cognition as a scientific approach to solve the formulated scientific problem. The dialectical approach includes the systematization and updating of existing knowledge and new data about the object of research.

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Section: Discussionmentioning

confidence: 99%

Section: Scientific Problemmentioning

confidence: 99%

On Electrical Discharge Machining of Non-Conductive Ceramics: A Review

et al. 2019

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Tribological Behaviors of Cu/RGO/WS₂ Composites in Air and Vacuum Environments

Qian

Feng

et al. 2020

Tribology Transactions

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Investigation of properties of the regular structures obtained by additive technologies in combination with the powder metallurgy methods

Gordeev,

Binchurov,

Moskvichev

et al. 2023

PoHEI.MB

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Despite significant amount of research and applied works in the additive technologies, problems of the topological optimization of structures obtained by combining 3D printing and the powder metallurgy methods remain insufficiently studied both theoretically and experimentally. Results of simulating regular structures made of plastics and studying their destruction processes could be effectively used as a starting approach in developing technology for production of the composite materials based on the titanium alloys with the increased level of strength properties. Based on numerical experiments and full-scale tests, the most preferred types of structures were determined. They include honeycomb structures based on PLA with the following strength properties: elastic modulus — 342.3 MPa; ultimate compressive strength — 20.4 MPa; specific strength — 81 MPa cm3/g. 3D models realized on plastics were used in manufacture of the metal composites using technology combining selective laser melting and powder metallurgy. In addition to increasing density and eliminating porosity of structures made from the titanium alloy powders, the strength properties level also increases after infiltration with the lower-melting alloys, since redistribution of stresses arising in the titanium frame under load is ensured. Bending strength alters in the range of 1140...1560 MPa and elastic modulus - in the range of 49 500...54 000 MPa depending on the composite composition and selective laser melting modes. Rockwell hardness increases from 35 to 45 HRC, and Brinell hardness — from 340 to 410 HB, which is by 20...25 % higher than hardness of the rolled products from the VT6 alloy. The increased strength values could be explained by the material composite structure formed by combination of the two mutually penetrating frames. Results of testing samples for strength are another argument in favor of the proposed infiltration method implying combined additive and powder metallurgy methods.

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Investigation into the Peculiarities of Structure Formation and Properties of Copper-Based Powder Pseudoalloys Modified by ZnO and TiN Nanoparticle Additives

Cited by 5 publications

References 17 publications

On Electrical Discharge Machining of Non-Conductive Ceramics: A Review

On Electrical Discharge Machining of Non-Conductive Ceramics: A Review

Tribological Behaviors of Cu/RGO/WS₂ Composites in Air and Vacuum Environments

Investigation of properties of the regular structures obtained by additive technologies in combination with the powder metallurgy methods

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Investigation into the Peculiarities of Structure Formation and Properties of Copper-Based Powder Pseudoalloys Modified by ZnO and TiN Nanoparticle Additives

Cited by 5 publications

References 17 publications

On Electrical Discharge Machining of Non-Conductive Ceramics: A Review

On Electrical Discharge Machining of Non-Conductive Ceramics: A Review

Tribological Behaviors of Cu/RGO/WS2 Composites in Air and Vacuum Environments

Investigation of properties of the regular structures obtained by additive technologies in combination with the powder metallurgy methods

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Product

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Tribological Behaviors of Cu/RGO/WS₂ Composites in Air and Vacuum Environments