1. Rhodium ruthenium alloy: a binary alloy containing ruthenium based on rhodium. The maximum solubility of ruthenium in rhodium is >20%, and the as-cast Vickers hardness of RhRu10 alloy is 1344. Rhodium-ruthenium alloy is smelted with rgon gas protection in a high-frequency induction heating furnace. The ingot is hot-rolled and a small amount of cold-worked into a material, which is often used as a catalyst. 2. Ruthenium resistor paste: the most widely used resistor paste composed of electrically conductive materials (ruthenium dioxide, bismuth ruthenate, lead ruthenate, etc.), glass binder, organic carrier, etc., with a wide range of resistance values , Low resistance temperature coefficient, good resistance reproducibility, good environmental stability, etc., used to make high-performance resistors and high-reliability precision resistor networks. 3. Ultra-fine hydrated ruthenium dioxide powder: black or blue-black ultra-fine powder used in the production of thick film resistor pastes or catalysts. The mass fraction of ruthenium is 60% to 71%. 4. Ruthenium-based thick film resistor paste: a paste composed of ruthenium dioxide powder, ruthenate, inorganic additives and organic carriers, which is suitable for printing or coating, and is used for thick film hybrid integrated circuits, Resistance network. 5. Ruthenium is an excellent catalyst: used in hydrogenation, isomerization, oxidation and reforming reactions. Pure metallic ruthenium has very few uses. It is an effective hardener for platinum and palladium. Use it to make electrical contact alloys, and hard-grind cemented carbides.