Overview and Application of Nickel Alloys

 Overview of Nitinol Powder

Nitinol is a nickel-titanium alloy containing about 50% nickel. It combines two materials to provide more desirable properties, such as higher strength or corrosion resistance. Due to its unique properties, it is used in a variety of devices across multiple industries.

Although discovered in the early 1960s, nitinol took decades to reach the market due to difficulties encountered during processing and manufacturing. In fact, most of Nitinol's many uses have been realized since the mid-1990s, when its usefulness in a wide range of applications stemmed from its shape-memory and superelastic properties. Shape memory means that nitinol can change into a new form at one temperature, such as below normal body temperature, and then return to its original shape when heated above its transition temperature.

Nitinol is a shape memory alloy, a special alloy that can automatically restore its plastic deformation to its original shape at a certain temperature. Its expansion rate is more than 20%, its fatigue life is 7 times that of 1*10, its damping characteristics are 10 times that of ordinary springs, its corrosion resistance is better than that of the best medical stainless steel at present, and it can meet various engineering requirements and medical application needs. Excellent functional material.

In addition to its unique shape memory function, memory alloys also have excellent properties such as wear resistance, corrosion resistance, high damping and superelasticity.

Nitinol has two closely related and unique properties: the shape memory effect and superelasticity (also known as pseudoelasticity). Shape memory is the ability of Nitinol to deform at a certain temperature, retain its deformed shape when the external force is removed, and then return to its original undeformed shape when heated above its "transition temperature." Hyperelasticity is the ability of a metal to deform greatly and return to its undeformed shape immediately upon removal of an external load. Nitinol deforms 10 to 30 times as much as normal metal and returns to its original shape. Whether Nitinol exhibits a shape memory effect or superelasticity depends on whether it is above the transition temperature of a particular alloy. Below the transition temperature, it exhibits a shape memory effect;

improved versatility

higher toughness

Enhanced corrosion resistance

Antioxidants

Strength increases at higher and lower temperatures

magnetic

Electronic properties

Resistant to nickel titanium corrosion.

Many nickel-based alloys have excellent properties at temperatures above 1000°C, making them ideal for extremely harsh environments. They provide excellent oxidation resistance at high temperatures while maintaining high quality weldability, machinability and ductility.

Nickel alloys have an average lifespan of 25 to 35 years. Depending on the application, the service life may be longer. Therefore, the material is more cost-effective than other metals. Nickel alloys are recyclable and have one of the highest recycling rates in the world. About half of the nickel in stainless steel products comes from recycled nickel material.

Applications of Nitinol Powder

Nitinol powder contains 50% nickel and 50% titanium, that is, the composition of nickel and titanium is half and half. The temperature range of its shape memory can be adjusted by means of control elements. In general, the higher the nickel content of nitinol, the lower the operating temperature. When it contains 55% nickel and 45% titanium, the memory alloy can work at room temperature.

The tensile strength du of Nitinol can reach 1000 MPa. That is, it requires more than 100 grams of dry force per square millimeter to break it, is stronger than ordinary steel, and has good "memory" properties, and the circumference can be adjusted by control elements.

People take advantage of this property of shape memory alloys to make pearl necklaces and bracelets with shape memory alloy wires, and weave them into bras with shape memory alloy wires. Wearing these decorations and health care products on the body will restore the original curvature and stiffness under the action of body temperature, thus playing the role of decoration and health care. In addition, you can make orthodontic wires from Nitinol to take advantage of the temperature of the human mouth to straighten deformed teeth.

Nitinol can be used to replace traditional actuators (solenoids, servo motors, etc.), such as the simple hexapod robot Stiquito.

Nitinol springs are used in fluid thermal valves, and this material can be used as both a temperature sensor and an actuator.

The alloy is used as autofocus actuators in action cameras and optical image stabilizers in mobile phones.

Alloys are used in pneumatic valves to provide comfortable seating and have become the industry standard.

The alloy Chevrolet Corvette contains a Nitinol actuator that replaces the heavier electric drive to open and close the hatch to release air in the torso, making it more accessible.

Nitinol powder price

The price of nickel-titanium alloy powder will change randomly with the production cost, transportation cost, international situation, exchange rate, and supply and demand of the nickel-titanium alloy powder market. Tanki New Materials Co., Ltd. aims to help industries and chemical wholesalers find high-quality, low-cost nanomaterials and chemicals by providing a full range of customized services. If you are looking for Nitinol powder, please feel free to send an inquiry to get the latest Nitinol powder price.

Nitinol Powder Supplier

As a global supplier of Nitinol powders, Tanki New Materials Ltd. has extensive experience in the performance, application and cost-effective manufacturing of advanced and engineered materials. The company has successfully developed a series of powder materials (including water-stearic acid emulsion, water-based calcium stearate, zinc stearate, etc.), high-purity target materials, functional ceramics and structural devices, and provides OEM services.

Nitinol Powder Properties
Other Namesnickel titanium, shape memory nitinol, NiTi, Ni-Ti,
nickel-titanium shape-memory alloy (SMA)
CAS No.52013-44-2
Compound FormulaNiTi
Molecular WeightN/A
AppearanceBlack Powder
Melting Point1300 °C
Boiling PointN/A
Density6.45 g/cm3
Solubility in H2ON/A
Poisson's Ratio0.33
Specific Heat0.20 cal/g·°C
Tensile Strength895 MPa (Ultimate, fully annealed)
Thermal Conductivity0.18 W/cm (austenite), 0.086 W/cm (martensite)
Thermal Expansion11.0 x 10-6/°C (austenite), 6.6 x 10-6/°C (austenite)

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