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Tin metal powder uses & benefits

Views: 1     Author: Site Editor     Publish Time: 2022-09-12      Origin: Site

Tin powder basic information

CAS: 7440-31-5

EINECS: 231-141-8

Chemical Formula: Sn

Molecular weight: 118.71

Melting point: 231.9-233℃

Water Solubility: H2O: Soluble

Crystal: spherical/non-spherical

Particle diameter: 50nm 80nm 100nm 200nm 500nm

1μm 5μm 10μm 20μm 40μm

Purity: ≥99.9%

Color: gray black gray (nanometer)

Application: Mainly used in manufacturing carbon products, friction materials, oil bearing and powder metallurgy structure materials

Tin metal powder dangerous goods label: Irritant

Risk terms: R37/38 - Respiratory and skin irritation +B52.

Safety Terms: S24/25 - Avoid contact with skin and eyes.

Sn powder properties

Grey powder. Relative density 7.31; Melting point 231.89 ℃; The boiling point of 2507 ℃. Insoluble in water, soluble in dilute hydrochloric acid, sulfuric acid, nitric acid. Tin reacts with both strong acids and bases. A protective layer of tin dioxide can be formed in the air. Tin can be dissolved by hot sulfuric acid in the presence of an oxidant. At high temperature, concentrated nitric acid has a strong corrosive effect on tin. Does not interact with dilute solutions of ammonium hydroxide and sodium carbonate. The powder can burn under high temperature and open flame.

Tin oxide powder preparation

Taking tin tetrachloride as raw material, it is purified by distillation, hydrolyzed to tin hydroxide, and then reduced by hydrogen gas to get high purity tin product.

Tin powder choice

The product has high purity, uniform particle size, ball shape, good dispersion, high oxidation temperature and good sintering shrinkage.

Sn powder application

1. Metal nano lubricating additive: add 0.1~1% nano tin powder to lubricating oil and grease, which can form self-lubricating and self-repairing film on the surface of friction pair in the process of friction, and significantly reduce the anti-wear and anti-friction performance of friction pair.

2. Activated sintering additive: nano-tin powder can greatly reduce the sintering temperature of powder unmetallurgy products and high temperature ceramic products in powder unmetallurgy.

3. Metal and non-metal surface conductive coating treatment: in the absence of oxygen conditions, below the temperature of the powder melting point coating, this technology can be used in the production of microelectronic devices.

Tin metal powder safety

Irritating to eyes, skin and mucous membranes. Misuse can cause acute gastroenteritis symptoms, long-term inhalation of tin fume, can cause benign tin foam in the lungs. Should be stored in a cool, dry, ventilated, avoid light in the warehouse, can not be stored with strong acid, alkali and flammable goods mixed transport. In the process of transportation to prevent rain, sun exposure. Handle with care during loading and unloading to prevent breakage of the packing bottle.