A coating providing protection against x-rays

Abstract

The invention relates to a coating providing protection against X-ray radiation, having superior corrosion and wear resistance and high thermal stability.

Description

[0001] A COATING PROVIDING PROTECTION AGAINST X-RAYS

[0002] Technical Field

[0003] The invention relates to a coating providing protection against X-ray radiation, having superior corrosion and wear resistance and high thermal stability.

[0004] Prior Art

[0005] Radiation is an indispensable part of some professions, and many people, especially in the field of medicine, spend almost their entire working hours inside radiation protective equipment. The majority of this equipment contains lead blocks and is generally very heavy. Therefore, musculoskeletal system diseases start to appear after a while in people who have to use this equipment continuously. Another problem of existing radiation shielding materials is that they pose health and environmental risks. Currently used shielding materials, lead in particular, contain toxic components.

[0006] High heat resistance is a quite important parameter in studies regarding radiation shielding, especially in space applications. Existing radiation shielding materials can pass thermal resistance tests after some doping processes that weaken their main missions. The corrosion and wear resistance of radiation shielding materials used in the current situation is limited.

[0007] The patent document numbered DE102009025581A1 discloses the coating of an electrical component with a silicide layer. For example, a method for protecting the semiconductor chip of a fluoroscopy device from radiation is described.

[0008] The patent document numbered JPH0465816A discloses an X-ray mask.

[0009] The patent document numbered JP2016029365A discloses an X-ray shielding grid and Talbot interferometer structure and production method. The document titled “The radiation shielding features for some silicide, boride and oxide types ceramics” discloses the radiation protection features of some silicide, boride, and oxide type ceramics.

[0010] When the studies existing in the prior art are examined, a need has been felt for the development of the coating subject to the invention providing protection against X- ray radiation.

[0011] Objectives of the Invention

[0012] The object of this invention is to develop a coating providing protection against X- ray radiation.

[0013] Another object of this invention is to develop a coating capable of remaining effective even in environments having high temperature thanks to its high thermal stability.

[0014] Another object of this invention is to develop a coating having superior corrosion and wear resistance.

[0015] Another object of this invention is to develop a coating providing protection effectively against X-ray radiation in sensitive electronic devices and equipment.

[0016] Another object of this invention is to develop a coating which is a lower cost and sustainable solution thanks to its providing effective protection in a much thinner layer.

[0017] Detailed Description of the Invention

[0018] A coating providing protection against X-ray radiation, and comprises;

[0019] - an intermetallic silicide layer,

[0020] - a metallic alloy substrate.

[0021] The intermetallic silicide layer located in the coating subject to the invention stops these photons by interacting with X-ray photons. The metallic alloy substrate is the metallic alloy enabling the formation of the silicide coating. Furthermore, it provides X-ray shielding.

[0022] The metallic alloy substrate located in the coating subject to the invention is a nickel-based superalloy. It contains a high content of chromium (Cr) and cobalt (Co). A nickel / silicon (NiSi) based intermetallic silicide layer has been formed on its surface by coating, and thereby the surface properties have been made resistant to oxidation and wear.

[0023] Intermetallic silicide is a compound formed by the combination of silicon and one or more metals and forms a specific intermetallic phase. The coating subject to the invention has been developed upon the fact that thick films based on special phases formed by metals with silicon show radiation shielding properties. Here, if nickel is used as the metal, a NiSi-based intermetallic phase is in question; if iron is used, a FeSi-based intermetallic phase is in question. These examples can be multiplied. These compounds generally have a specific stoichiometric ratio between metal and silicon atoms, which results in a well-defined crystal structure. The structure of intermetallic silicides is ordered and has a specific crystal arrangement determined by stoichiometry. These structures are generally more stable due to the strong bonds between metal and silicon atoms and have properties such as high melting points and hardness. The structure of classical silicides can be less ordered and can vary depending on the silicon to metal ratio. They can form amorphous or poly crystalline structures and are not as stable mechanically or thermally as intermetallic silicides.

[0024] In addition to this, intermetallic silicides generally exhibit superior mechanical properties, higher hardness, and wear resistance. Furthermore, they show better thermal stability and oxidation resistance at high temperatures, which makes them suitable for high-temperature applications. Classical silicides are generally used for their electrical properties such as forming low-resistance contacts in semiconductor devices. These silicides are not as durable mechanically or thermally as intermetallic silicides.

[0025] The coating subject to the invention is located at the intersection point of fields where effective radiation protection is necessary, such as nuclear engineering, medical physics, aerospace engineering, and industrial safety. X-ray radiation finds wide application in many fields, including medical diagnosis, industrial inspection, and scientific research. Despite its advantages, X-ray radiation can pose serious hazards to human health and damage sensitive electronic devices. Therefore, the use of effective protection materials is mandatory to ensure safety and protect the equipment. The coating subject to the invention will be able to be used for X-ray machines and CT scanners used in hospitals and diagnostic centers, protection for patient safety during imaging procedures, the protection of sensitive avionics and electronic systems in aircraft, the protection of space exploration equipment to provide protection against cosmic radiation, X-ray inspection systems used in nondestructive testing of materials and components, protection for operators and surrounding areas in industrial environments, protective coatings for equipment and infrastructures in nuclear power plants, protection for research laboratories using X-ray radiation for material analysis and other applications, the protection of sensitive electronic components in devices exposed to radiation environments such as high-altitude flights or space missions, protection for X-ray diffraction and spectroscopy equipment used in materials science and chemistry laboratories, and for protective barriers for researchers working with X-ray generating devices.

Claims

CLAIMS1. A coating providing protection against X-ray radiation, characterized in that it comprises;- an intermetallic silicide layer, - a metallic alloy substrate.

2. The coating according to claim 1, characterized in that the metallic alloy is nickel-based.

3. The coating according to claim 2, characterized in that the metallic alloy contains chromium and cobalt.