Thermal spray wires
45 CT/ PS45 is a Ni-Cr-Ti alloy wire designed for arc spraying. This alloy produces dense, well-bonded coatings with excellent corrosion resistance and good wear resistance. It produces coatings which are extremely resistant to corrosive vanadium and sulfur gases in boiler atmospheres.
Supply Size: 1.2mm /1.6mm /2.0mm or Customized
In the realm of advanced materials, the Ni55Cr45 alloy has earned its place as a high-performance marvel. This alloy, composed predominantly of nickel (Ni) and chromium (Cr), possesses a unique set of characteristics that make it a sought-after material in various industries. In this detailed product description, we will delve into the composition, properties, applications, and advantages of Ni55Cr45, shedding light on its vital role in engineering and technology.
Composition of Ni55Cr45 Alloy
At the heart of the Ni55Cr45 alloy lies its precise composition, carefully engineered to deliver the exceptional properties that set it apart in the world of materials science. This high-performance alloy consists of approximately 55% nickel and 45% chromium. These two primary elements work in harmony, complemented by trace amounts of additional elements, to create a material that offers an outstanding balance of strength, corrosion resistance, and high-temperature capabilities.
Nickel (Ni): Nickel, the predominant element, plays a crucial role in providing corrosion resistance, especially in harsh and corrosive environments. It is also a primary contributor to the alloy’s high-temperature strength, making it ideal for applications in extreme heat conditions.
Chromium (Cr): Chromium is the second major component of Ni55Cr45 alloy, and it plays a pivotal role in imparting oxidation resistance. When exposed to high temperatures, chromium forms a protective chromium oxide layer on the alloy’s surface. This oxide layer acts as a barrier, preventing further oxidation and ensuring the alloy maintains its structural integrity.
Minor Additions: In some formulations, small amounts of other elements, such as iron, manganese, molybdenum, and silicon, are added to further enhance specific properties. These minor additions can improve characteristics such as creep resistance, toughness, and resistance to thermal cycling, depending on the application requirements.
Properties of Ni55Cr45 Alloy
The Ni55Cr45 alloy boasts a comprehensive set of properties that make it a standout material in demanding applications across multiple industries. These properties are critical in ensuring the alloy’s reliability, performance, and longevity.
1. High-Temperature Strength:
One of the most remarkable attributes of Ni55Cr45 is its ability to maintain its structural integrity at elevated temperatures exceeding 1000°C (1832°F). This high-temperature strength is of paramount importance in industries where exposure to extreme heat is routine, such as in aerospace, power generation, and petrochemical applications.
2. Creep Resistance:
Creep, the tendency of a material to deform under sustained stress at elevated temperatures, is a crucial consideration in applications like gas turbine engines and power generation equipment. The Ni55Cr45 alloy excels in creep resistance, making it an ideal choice for components subject to constant loads at high temperatures.
3. Fatigue Resistance:
In applications involving cyclic loading, the Ni55Cr45 alloy exhibits remarkable fatigue resistance. This property is pivotal in ensuring the longevity and safety of components that undergo repeated stress cycles, particularly in the aerospace industry.
4. Toughness and Ductility:
Ni55Cr45 maintains its toughness and ductility even at elevated temperatures. This is essential for components subject to thermal cycling and mechanical stresses, as it ensures the alloy endures without significant degradation.
5. Oxidation Resistance:
The formation of a protective chromium oxide layer when exposed to high temperatures is a standout feature of Ni55Cr45. This oxide layer prevents further oxidation, ensuring the alloy remains structurally sound and retains its mechanical properties over time.
6. Corrosion Resistance:
Beyond its oxidation resistance, Ni55Cr45 alloy exhibits exceptional corrosion resistance in harsh environments, including exposure to acids, alkalis, and chlorides. This characteristic makes it a reliable choice in various applications, especially in the petrochemical and chemical industries.
7. Thermal Conductivity:
The Ni55Cr45 alloy possesses good thermal conductivity, which is advantageous in applications where efficient heat dissipation is crucial, such as in heat exchangers and furnaces.
8. Thermal Expansion:
The coefficient of thermal expansion of Ni55Cr45 is relatively low, signifying minimal expansion or contraction when exposed to temperature variations. This property is pivotal for maintaining dimensional stability in high-temperature applications.
Applications of Ni55Cr45 Alloy
The unique combination of properties exhibited by Ni55Cr45 alloy has led to its extensive use across a wide range of industries, making it a go-to material for critical components in demanding environments.
Ni55Cr45 alloy is prominently featured in aerospace applications, where it is employed in critical components such as gas turbine engines, exhaust systems, and engine valves. Its ability to withstand high temperatures and mechanical stresses is indispensable for ensuring a safe and reliable flight.
2. Petrochemical and Chemical Industries:
In industries that handle corrosive fluids at elevated temperatures, Ni55Cr45 alloy is the material of choice for components like pumps, valves, and seals. Its corrosion resistance and high-temperature performance are vital in these applications.
3. Nuclear Power Generation:
Ni55Cr45’s ability to withstand radiation and maintain its structural integrity at extreme temperatures makes it a preferred choice for components within nuclear reactors, including fuel rod cladding and control rods.
4. Medical and Dental:
In the medical and dental fields, Ni55Cr45 is a key material for the production of medical devices and dental instruments. Its biocompatibility, corrosion resistance, and high fatigue strength make it an excellent choice for applications like dental braces, pacemakers, and other implantable medical devices.
5. Oil and Gas:
The Ni55Cr45 alloy is employed in demanding oil and gas applications where resistance to high-temperature and corrosive environments is paramount. It is used in components such as downhole tools and equipment for drilling and exploration.
In the electronics industry, Ni55Cr45’s thermal conductivity and resistance to high temperatures are leveraged for various applications, including heat sinks and electrical connectors.
In the world of advanced materials, the Ni55Cr45 alloy stands as a testament to the capabilities of materials science and metallurgy. Its unique combination of high-temperature strength, creep resistance, oxidation resistance, and corrosion resistance has solidified its position as a high-performance material across various industries.
As ongoing research and development continue to improve Ni55Cr45’s properties and reduce its cost, the alloy is poised to find new and expanded applications. In industries where the need for reliability and longevity is paramount, Ni55Cr45 remains at the forefront of materials engineering, shaping the present and future of high-temperature and corrosion-resistant solutions. Its unmatched characteristics make it a high-performance marvel that plays a pivotal role in the advancement of technology and engineering.
The coatings of 45CT wire is used to protect boiler tubes in thermal power plants, such as water cooling tubes, superheater tubes, reheater tubes, and economizer tubes, from oxidation and sulfidation against high temperature.
It also proven to be particularly effective as a protective arc spray coating for boiler tubes in black liquor recovery boilers and coal-fired utility boilers.
|Typical Hardness||Bond Strength||Deposit Rate||Deposit Efficiency||Machineability|
|HRC 30-35||7000 psi||10 lbs/hr/100A||85%||Good|
|1/16” (1.6mm)||50-60 psi||30-32||100-200||4-6 in (10-15 cm)|