Nano zirconium diboride appears as a gray powder, with a density of 5.8 and a melting point of 3040°C. Nano zirconium diboride has advantages such as a high melting point (approximately 3040°C), high hardness, and high thermal conductivity, making it an excellent high-temperature structural material. It exhibits metallic properties, with a resistivity slightly lower than that of metallic zirconium, and has good electrical conductivity.

Nano titanium diboride appears as a gray-black powder and has a hexagonal crystal structure similar to aluminum boride (AlB₂). Its melting point ranges from 2900 to 3225°C, and it can be oxidized in air at temperatures up to 1000°C. It is stable in hydrochloric acid (HCl) and hydrofluoric acid (HF).

Nano aluminum nitride belongs to the category of diamond-like nitrides, appearing as a white solid powder with a melting point of 2400°C and a boiling point of 2517°C. Nano aluminum nitride can remain stable in a vacuum up to 1500°C and only begins to oxidize in air at 1000°C. It reacts almost not at all with concentrated inorganic acids and has good water resistance. Nano aluminum nitride has a wide range of applications in fields such as electronic device heat dissipation, thermal conductive materials, high-temperature structural materials, ceramic devices, and polymer-based composites. Its excellent physical and chemical properties enable it to perform outstandingly in these areas.

Nano silicon nitride appears as a white solid powder, with a melting point of 1900°C (under pressure). Its thermal conductivity is 16.7 W/(m·K), and it has a low density, only 2/5 that of steel. The hardness of nano silicon nitride reaches above 9, and its compressive strength typically exceeds 1 GPa. Due to its high hardness and dense structure, it has excellent wear resistance, extending the product's lifespan.

Nano boron nitride (chemical formula: HBN) appears as a white solid powder, with a melting point of 2700°C and a density of 2.29 g/cm³. It is insoluble in cold water and slightly soluble in hot acid. Nano boron nitride possesses high insulation, high thermal conductivity, and high hardness, making it widely applicable in many fields.

Nano aluminum phosphate is an inorganic compound that appears as a white crystalline powder. It is insoluble in water, ethanol, and acetic acid, but soluble in concentrated hydrochloric acid, concentrated nitric acid, alkalis, and alcohols. Nano aluminum phosphate has a hexagonal crystal system structure, where Al+ and PO4- form a tetrahedral configuration, resulting in a relatively stable structure. It can be used as an inorganic scale inhibitor, catalyst, and cathode material for batteries, among other applications, making it widely applicable.

Barium fluoride is an inorganic compound that belongs to the cubic crystal system and has a colorless, transparent cubic crystal structure. The melting point of barium fluoride is 1354°C, the boiling point is 2260°C, and the density is 4.89 g/cm³, with a refractive index of 1.47112. Barium fluoride has various applications: it is used in the manufacture of optical glass, motor brushes, vacuum coatings, laser generators, optical fibers, and more; it is also used in the production of infrared light films, welding flux, enamel manufacturing, solid lubricants, preservatives, and pesticides.

Calcium fluoride is an inorganic compound with the chemical formula CaF2. It appears as a colorless crystal or white powder. It is poorly soluble in water and slightly soluble in inorganic acids. Calcium fluoride is stable at room temperature and is inert to organic chemicals and many acids, demonstrating its good chemical stability. However, it is recommended to store it at temperatures below -20°C to maintain its stability and prevent moisture absorption.

Chromium-silicon mixtures are primarily composed of two elements: chromium and silicon. Under high-temperature conditions, chromium and silicon can undergo chemical reactions to form chromium silicides (such as CrSi, CrSi₂, etc.). These compounds possess specific crystal structures and chemical properties. Chromium-silicon mixtures typically exhibit good chemical stability, are insoluble in water, but may react in certain strong acid or strong alkali solutions. Chromium-silicon films usually have high resistance values and chemical stability, along with good optical properties and high-temperature resistance. These characteristics make chromium-silicon films have broad application potential in optical coatings.

Tin oxide (SnO₂) is an inorganic compound with the chemical formula SnO, appearing as a white, light yellow, or light gray powder in cubic, hexagonal, or orthorhombic crystal systems. It has a density of 6.95 g/mL at 25°C and is an excellent transparent conductive material. It was the first transparent conductive material to be commercially used, and to enhance its conductivity and stability, doping is often employed, such as SnO₂: Sb and SnO₂: F.

Lanthanum titanate appears as a black powder and possesses excellent piezoelectric, electro-optical, and nonlinear optical properties. It has a monoclinic crystal structure with a lattice constant of 1.30185 nm, a density of 5.79 g/cm³, a melting point of 1790°C, and a Curie point temperature of 1500°C. The refractive index of lanthanum titanate films shows little variation, and the extinction coefficient is extremely low, which helps maintain the stability of the optical performance of the coating. It is stable under normal temperature and pressure and is suitable for storage in a cool, ventilated, and dry place.

Cryolite is a mineral with the chemical formula Na₃AlF₆. Appearance: white, fine crystals, odorless. It has a glassy to greasy luster. Cryolite possesses specific physicochemical properties, such as a high melting point, good stability, and strong conductivity, which make it an important additive or auxiliary material in optical coating processes. By adding cryolite, the performance of coating materials can be enhanced, such as improving hardness, corrosion resistance, and anti-reflective properties, thereby increasing the lifespan and performance of optical devices.