Application of Plasticizers Octadecane to Pentatriacontane and Ethylene Glycol in the Manufacture of Metaloceramic Alloys
Ratov B. Kuttybayev A. Tileuberdi N. Utepov Z. Aliakbar M. Zhanggirkhanova A. Pashchenko O. Kamyshatskyi O. Khomenko V. Zaichuk O. Seidaliyev A.
2025Engineered Science Publisher
ES Materials and Manufacturing
2025#28
The study aimed to investigate the impact of plasticizers on the properties of metal-ceramic hard alloys and develop recommendations for optimizing their composition, concentration, and production process parameters. WC8 alloy powder containing 8% cobalt binder and varying tungsten carbide grain sizes (2.5–8 μm) was used. Plasticizers tested included paraffin and polyethylene glycol (PEG) in concentrations of 1–3%. Powder mixtures were pressed under high pressure and subjected to vacuum-compression sintering. Mechanical properties such as bending strength, hardness, and density were analyzed using standard measurement techniques. Plasticizers improved the flowability of powder mixtures and the quality of pressing. Paraffin at concentrations of 1–2% provided the best results, achieving a bending strength of 2030 MPa, a density of 14.8 g/cm3, and a hardness of 88 HRA. PEG showed lower performance due to increased porosity, especially at concentrations of 3%. Reducing tungsten carbide grain size to 2.5 μm further enhanced the mechanical properties of the alloys. Optimal plasticizer concentrations for sintering hard alloys under vacuum-compression conditions were established for the first time. It was determined that paraffin is more effective in forming a homogeneous material structure compared to PEG. The results can be applied in the production of hard alloys for various industries, including mechanical engineering, metallurgy, aerospace, and defense, ensuring improved product quality and reliability.
Hard alloys , Mechanical properties , Paraffin , Plasticizers , Polyethylene glycol , Vacuum-compression sintering
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Department of Geophysics and Seismolog, Satbayev University, 22a Satbayev str., Almaty, 050013, Kazakhstan
Department of Hydrogeology, Engineering and Oil and Gas Geology, Satbayev University, Almaty, 050013, Kazakhstan
Oil and Gas Engineering and Drilling Department, Dnipro University of Technology, Dnipro, 49005, Ukraine
Mining equipment plant Tehpostavka LLC, Dnipro, 49000, Ukraine
Department of Hydrogeology and Engineering Geology, Ukrainian State University of Science and Technologies, Dnipro, 49010, Ukraine
Research and Development, Yessenov University, Aktau, 130000, Kazakhstan
Department of Geophysics and Seismolog
Department of Hydrogeology
Oil and Gas Engineering and Drilling Department
Mining equipment plant Tehpostavka LLC
Department of Hydrogeology and Engineering Geology
Research and Development
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