Metal materials

Nonferrous metal, Rare metals, Rare And Noble Metal, Metal powder.

Nano materials

Nanometer TiO2 Series, Nanometer SiO2 Series,Nanopowder,Graphene.


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Production of tin nanometric powders by hydrogen DC claret arc evaporation.

About us

Gerhold Chemetals Co., Ltd is a German company founded both in Germany and China in 1997.


Yttrium oxide for sale.

Silver nitrate uses.

Gerhold Chemetals Co., Ltd.

  Gerhold Chemetals Co., Ltd is a German company founded both in Germany and China in 1997, focuses on research and development of Metallic powders, Metal Compounds nano powders. We can customize products according to customers’ special requirements.

  Our technologies are from Elektrotechnik University, Aachen University, München University and Beijing University.


 The advantages of our products:

   1. Uniform particle size 
   2. invariant Shape
   3. High purity, reach 99.999999
   4. Good dispersion


  In worldwide market, Gerhold Chemetals has sold products to more than 50 countries. We will keep on developing and enlarging business by our advantages.

Osmium powder

Submitted by admin on Tue, 05/28/2019 - 01:25

Osmium powder powdery and dark blue-black.Osmium powder also slowly oxidized at room temperature. It produces osmium tetroxide and has a fishy smell and is highly toxic.

The use of Osmium powder includes its use as an alloying component with other group metals, and the resulting alloy is extremely hard (for example, osmiridium, a naturally occurring Osmium powder and Iridium alloy, very hard and used for the tip of the nib). Osmium powder can also be used as a strong catalyst in gas reactions.

Handling and storage of osmium powder:

Osmium (OS)

Submitted by admin on Mon, 05/27/2019 - 01:46

Osmium is a Group VIII element of the sixth cycle of the Periodic Table of the Elements, one of the members of the platinum group metal. The element symbol is Os, atomic number 76, relative atomic mass 190.2. It is a heavy platinum group metal and is the most dense metal known at present.


Submitted by admin on Mon, 05/27/2019 - 01:44

Nickel oxide, chemical formula NiO. It is a common inorganic compound. It is the most stable oxide of nickel. It is a green powder. It is widely used in daily life. It is also used to produce high purity nickel (>99.98%). This product is harmful to human health. It should be protected when contacted. It may cause cancer and sensitization to human body.

Nickel oxide is a green powder solid. The melting point is 1980 +20. The density was 6.67g/cm3. It is insoluble in water, alkaline liquor, alkaline oxide, acid and ammonia water.


Submitted by admin on Mon, 05/27/2019 - 01:42

Nickel powder is also divided into carbonyl nickel powder, which is gray irregular powder and easy to oxidize in moist air. It is mainly used for coating and plastics as conductive pigments to shield electromagnetic interference and radio frequency interference, for various high gloss decorative paints and plastics, instead of aluminium powder as anticorrosive paint in water system, etc. Fine spherical nickel powder can be used for conductive ink.

nickel carbonate

Submitted by admin on Thu, 05/23/2019 - 01:41

The molecule formula of nickel carbonate is NiCO3, and its properties are oblique light green crystals, which are decomposed above 300 C. Soluble in ammonia and dilute acid. It is insoluble in water. It is soluble in pure water containing CO2, soluble in ammonia water and dilute acid, insoluble in cold concentrated hydrochloric acid and nitric acid. When heated in the air, oxides are formed. The reaction with ammonium chloride solution yields CO2 and NH3, leaving nickel chloride (II) solution.

Ni Coated Mica

Submitted by admin on Thu, 05/23/2019 - 01:31

Nickel-coated graphite powder, also known as nickel-coated graphite powder, is a new kind of graphite strengthening material, which is obtained by electroless plating or vapor deposition of graphite powder.

Nickel-coated graphite powder can distinguish two kinds of properties. The first kind of powder used for thermal spraying has a coarse particle size and a gray appearance. The second kind of additive powder has fine particle size and dark gray or black appearance.

Nb2O5 Powder

Submitted by admin on Thu, 05/23/2019 - 01:16

High purity Niobium pentoxide (Nb2O5) is a white powder. It turns yellow when heated and turns white when it cools. The temperature of 1460 ° C. If it is doped with impurities (such as magnesium oxide, lead oxide, etc.), it will change color after sintering at high temperature.

Nano powder of calcium carbonate

Submitted by admin on Wed, 05/22/2019 - 01:44

Nano-calcium carbonate is a new ultra-fine solid powder material developed in the 1980s with a particle size of between 0.01 and 0.1 μm. Due to the ultrafine refinement of Nano-calcium carbonate particles, the crystal structure and surface electronic structure change, resulting in quantum size effects, small size effects, surface effects and macroscopic quantum effects that ordinary calcium carbonate does not have.

Nano grade anion powder

Submitted by admin on Wed, 05/22/2019 - 01:36

Nano anion powder is made from natural materials through nanotechnology. Scientific research shows that nano-nano-ion powder can greatly help the human body to maintain energy and improve the living environment of human beings.

The mechanism of ionization of gas molecules in the air mainly depends on the effect of external urging on gas, and the catalyzed by ultraviolet light, radiation, photoelectric effect and the like.