scholarly journals Manufacturing and performance evaluation of medical radiation shielding fiber with plasma thermal spray coating technology

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Seon-Chil Kim ◽  
Jun-Sik Son
Keyword(s):  
Thermal Spray ◽  
Tungsten Powder ◽  
Spray Coating ◽  
Thermal Spray Coating ◽  
Radiation Shielding ◽  
Polymer Materials ◽  
Process Technology ◽  
Nonwoven Fabrics ◽  
And Performance ◽  
Shielding Material

AbstractLead, which has been used for radiation shielding in medicine, is currently sought to be replaced by an eco-friendly shielding material. Therefore, it should be replaced with shielding materials possessing excellent processability and radiation shielding performance similar to that of lead. In this study, a new process technology was developed focusing on the processability of tungsten, a representative eco-friendly shielding material. It is difficult to reproduce the shielding performance when using the method of coating nonwoven fabrics with a liquid using tungsten powder on a polymer material, which is adopted to ensure the flexibility of the shielding fabric. To address this, tungsten powder was sprayed on the fabric using a plasma thermal spray coating process and coated to a thickness of 0.2 mm to evaluate the shielding performance. Compared to standard lead with a thickness of 0.2 mm, the shielding efficiency differed by approximately 15%. Since the developed process can maintain the amount of injection in an area, it is possible to ensure the reproducibility of the shielding performance and automated process for mass production. This approach is economically feasible as it does not entail the mixing of polymer materials; hence, it can be used for preparing radiation shielding clothing for medical institutions.

Preparation of spherical Y2SiO5 powders for thermal-spray coating

Particuology ◽  
2009 ◽  
Vol 7 (5) ◽  
pp. 368-372 ◽  
Author(s):  
Yangbao Qian ◽  
Linzhong Du ◽  
Weigang Zhang
Keyword(s):  
Thermal Spray ◽  
Spray Coating ◽  
Thermal Spray Coating

Investigation into the Effects of High Temperature on Mechanical Properties of Thermal Spray Coatings Applied by Plasma Spraying

2018 ◽  
Vol 284 ◽  
pp. 1151-1156
Author(s):  
Lenar N. Shafigullin ◽  
A.R. Ibragimov ◽  
A.I. Saifutdinov
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
High Temperature ◽  
Thermal Spray ◽  
Spray Coating ◽  
Thermal Spray Coating ◽  
Thermal Spray Coatings ◽  
Spray Coatings ◽  
Heat Treatment Of Coatings ◽  
Double Heat Treatment

C. C. Berndt advanced investigations of mechanical properties of thermal spray coatings under 4-point bending. He found that this investigation method is sensitive to the mechanical properties of thermal spray coatings.This paper contains the detailed investigation results for thermal spray coatings of zirconium dioxide under 4-point bending, i.e. tests of the specimens subjected to spraying at varying conditions and pre-test soaking with the various duration at 1100 °С.It was established how the mechanical properties of thermal spray coatings changed depending on the spraying mode and high temperature soaking. The test results show that the double heat treatment of coatings is more preferable than one-time heat treatment as it make the properties change linearly. It is more easily controllable during operation of the components with thermal spray coating.

scholarly journals Thermal Spray Coating: A New Way of Protecting Wood

BioResources ◽  
2016 ◽  
Vol 12 (1) ◽  
Author(s):  
Mojgan Nejad ◽  
Romina Shafaghi ◽  
Larry Pershin ◽  
Javad Mostaghimi ◽  
Paul Cooper
Keyword(s):  
Thermal Spray ◽  
Spray Coating ◽  
Thermal Spray Coating

scholarly journals Thermal Spray Coating of Al-Cu-Fe Quasicrystals: Dynamic Observations and Surface Properties

2019 ◽  
Author(s):  
Hadi Parsamehr ◽  
Tai-Sheng Chen ◽  
Ding-Shiang Wang ◽  
Ming-Sheng Leu ◽  
Insung Han ◽  
...  
Keyword(s):  
Surface Properties ◽  
Thermal Spray ◽  
Spray Coating ◽  
Thermal Spray Coating

scholarly journals Pengaruh Proses Oksidasi Lapisan Metal Matrix Composite pada Substrat SS316

2019 ◽  
Vol 4 (2) ◽  
pp. 277
Author(s):  
Erie Martides ◽  
Candra Dewi Romadhona ◽  
Djoko Hadi Prajitno ◽  
Budi Prawara
Keyword(s):  
Metal Matrix Composite ◽  
Thermal Spray ◽  
Matrix Composite ◽  
High Velocity ◽  
Metal Matrix ◽  
Spray Coating ◽  
Thermal Spray Coating ◽  
High Velocity Oxygen Fuel ◽  
Hvof Thermal Spray ◽  
Oxygen Fuel

Material SS316 seringkali digunakan untuk komponen yang bekerja pada temperatur tinggi dengan resiko mengalami oksidasi yang menyebabkan penurunan sifat material dan umur pakai dari komponen. Deposisi Metal Matrix Composite (MMC) NiCr+Cr3C2+Al2O3 dan NiCr+WC12Co+Al2O3 menggunakan metode High Velocity Oxygen Fuel (HVOF) thermal spray coating dengan parameter konstan dilakukan sebagai proses perlakuan pada permukaan SS316 untuk meningkatkan nilai kekerasan dan ketahanan terhadap oksidasi.  Tujuan penelitian ini adalah untuk mengetahui pengaruh proses oksidasi lapisan MMC pada material substrat SS316. Proses oksidasi dilakukan dengan variasi temperatur 500° dan 600°C, penahanan temperatur selama 6 jam, kemudian diteruskan dengan karakterisasi serta perhitungan laju oksidasi. Hasil penelitian menunjukkan spesimen MMC NiCr+Cr3C2+Al2O3 yang dilakukan proses oksidasi pada suhu 500°C memiliki laju oksidasi terendah yaitu 6,67 x 10-7 gram/mm2 jam. 

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