What kind of memory can metal alloys have? Detailed answer

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What kind of memory can metal alloys have? Detailed answer

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What kind of memory can metal alloys have?

Some metal alloys, such as nitinol (55% nickel and 45% titanium), have a shape memory effect. It lies in the fact that a deformed product made of such a material, when heated to a certain temperature, returns to its original shape. This is due to the fact that these alloys have a special internal structure called martensite, which has the property of thermoelasticity. In the deformed parts of the structure, internal stresses arise, which tend to return the structure to its original state. Shape memory materials are widely used in manufacturing, for example, for connecting sleeves that shrink at very low temperatures and straighten at room temperature, forming a connection that is much more reliable than welding.

Authors: Jimmy Wales, Larry Sanger

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Random news from the Archive

Low Capacitance TVS Littelfuse SP3384NUTG 12.02.2020

Littelfuse has released new low-capacity 3384V SP3,3NUTG TVS packages designed to protect interface lines in 10 Gigabit Ethernet (GbE) applications.

These TVS assemblies provide +-30 kV electrostatic (ESD) protection to IEC 61000-4-2 for high-speed interfaces, IEC 40-61000-4 (EFT, 4 /5 ns) and against microsecond interference with peak current up to 50 A (Lightning, 15/8 µs).

With ultra-low parasitic capacitance as low as 0,7 pF and low trip voltage (6,5...9 V), the SP3384NUTG is ideal for protecting differential data lines in 2.5, 5 and even 10 GbE applications without compromising integrity and without reducing the quality of the digital signal.

Features and Benefits:

Average capacitance value of each channel: 0,5 pF;
Average clamping voltage (tp=8/20ns)):
4 V at Ipp = 1 A
12 V at Ipp = 15 A
Provide protection for 4 single lines or 2 differential pairs;
Leakage current at 3,3V operating voltage: 3nA (average) and 40nA (maximum).

Application of SP3384NUTG assemblies:

Industrial low voltage differential interfaces (LVDS);
Data processing and storage centers and telecommunications:
5G wireless devices
WAN/LAN equipment
Servers
2.5G/5G/10G Ethernet
Consumer electronics and wearable devices.
The SP3384NUT TVS assemblies are available in miniature µDFN (3 x 2mm) packages. They have an operating temperature range of -40...125°C and comply with the requirements of AEC-Q101.

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