[Chemical composition] Zn may replace Cu (up to 12%) in the form of isomorphism, and impurities such as Ca, Fe, Si, Ti, Na, Pb, Ba, Mn, V, etc. adsorbed or mechanically mixed. The Zn-containing variant of malachite is called zinc malachite. [Crystal structure] monoclinic system; [Form] Crystals are rare, usually columnar, needle-like or fibrous along the c-axis. It is easy to (100) into a dovetail twin (Figure H-11), and twins are more common than single crystals. The aggregates are cluster-like, kidney-like, grape-like, hull-like, filled with veins, powder, soil, etc. (Fig. H-12). The inside of the renal aggregate has the characteristics of concentric layer or radial fiber, and the ring is composed of green to white with different shades. Earthy green malachite called copper (also known as malachite green). Figure H-11 Malachite crystals (a) Twin crystals (b), (c), (d) (quoted from Pan Zhaoyu, 1993) Figure H-12 Malachite crystal aggregate [Physical properties] usually green, but the larger color tone change from dark green, bright green to white; pale green streaks; glass just to gold luster, silky luster was by fiber. Cleavage {201}, {010} complete. Hardness 3.5 to 4. The relative density is 4.0 to 4.5. [genesis and occurrence] Malachite is produced in the oxidation zone of copper deposits. Its reaction formula: CuFeS 2 +4O 2 ===CuSO 4 +FeSO 4 2CuSO 4 +2CaCO 3 +H 2 O===2Cu 2 (CO 3 )(OH) 2 +2CaSO 4 +CO 2 Malachite Changyi azurite, azurite, natural copper, calcite , chalcopyrite, etc. Artifacts. China's Yangchun Shizuo Copper Mine is a large-scale malachite and azurite copper deposit. [Identification characteristics] The characteristics of the peacock green, the shape is often kidney-like, grape-like, and its interior has a radial fiber and concentric layer. [Main use] Copper can be smelted in large quantities. The pure and beautiful malachite can be used as an ornament and artwork. The powder can be used as a green pigment. Malachite can be used as a prospecting mark for copper mines. Thermal spray wires are used in thermal spraying processes, which involve the application of a coating material onto a surface. These wires are specifically designed to be melted and sprayed onto a substrate to create a protective or functional coating. Spray Wires,Arc Spray Coating,Thermal Arc Spray,Thermal Spray Wire Luoyang Golden Egret Geotools Co., Ltd , https://www.xtcalloypowder.com
a 0 =0.948 nm, b 0 =1.203 nm, c 0 =0.321 nm; β=98°; Z=4. The crystal structure is characterized by: [Cu(O, OH) 6 ] octahedral co-edge connection, parallel c-axis extending into double-strand, and the chains are connected by [CO 3 ].
Thermal spray wires are typically made from materials such as metals, alloys, or ceramics. They are available in various diameters and compositions to suit different applications and requirements. The wire is fed into a thermal spray gun, where it is heated to a molten state and propelled onto the surface being coated.
The thermal spray process offers several advantages, including the ability to apply coatings with excellent adhesion, corrosion resistance, wear resistance, and thermal insulation properties. It is commonly used in industries such as aerospace, automotive, oil and gas, power generation, and manufacturing.
Some common types of thermal spray wires include:
1. Metal wires: These wires are made from materials like aluminum, zinc, stainless steel, nickel, and copper. They are used for applications such as corrosion protection, thermal barrier coatings, and wear resistance.
2. Alloy wires: These wires are composed of a combination of different metals or metal alloys. They are used to create coatings with specific properties, such as high temperature resistance, electrical conductivity, or improved mechanical strength.
3. Ceramic wires: These wires are made from ceramic materials such as aluminum oxide, zirconia, or tungsten carbide. They are used for applications requiring high wear resistance, thermal insulation, or electrical insulation properties.
Overall, thermal spray wires play a crucial role in the thermal spraying process, enabling the creation of high-performance coatings for a wide range of industrial applications.
Cu 2 [CO 3 ](OH) 2