Overview
Iridium particles are finely divided forms of iridium, one of the densest and most corrosion-resistant metals in the platinum group. As a rare transition metal, iridium is primarily mined as a byproduct of nickel and platinum ores. Its particles are valued for their exceptional stability under extreme conditions, including high temperatures and corrosive environments. In industrial contexts, iridium particles are typically supplied as powders (1-100 µm) or larger granules, with purity levels ranging from 99.9% to 99.995%. The material's scarcity and high melting point contribute to its premium pricing, making it a strategic material for specialized applications where alternatives cannot match its performance.
Physical and Chemical Properties
Iridium particles exhibit remarkable physical properties, including a density of 22.56 g/cm³ (comparable to osmium) and a melting point exceeding 2400°C, the highest among platinum-group metals. Their crystalline structure is face-centered cubic, contributing to exceptional hardness and wear resistance. Chemically, iridium is highly inert, resisting attack by acids, including aqua regia at room temperature. This property, combined with its catalytic activity in oxidation reactions, makes it invaluable in industrial processes. The metal also displays excellent electrical conductivity and low oxidation rates in air at high temperatures, maintaining stability up to 1600°C.
Main Applications
In electronics, iridium particles are used in crucibles for single crystal growth and as coatings for high-performance electrodes. The aerospace industry utilizes iridium in rocket engine components and satellite propulsion systems due to its thermal stability. The chemical sector employs iridium as a catalyst for acetic acid production and in petroleum refining. Medical applications include radiotherapy devices and surgical implants, where biocompatibility and radiopacity are critical. Automotive spark plugs with iridium tips offer superior longevity compared to conventional platinum versions.
Safety and Storage
While iridium itself has low toxicity, fine particles require careful handling to prevent respiratory irritation or dust explosions. Work areas should employ local exhaust ventilation, and personnel must use NIOSH-approved particulate respirators for powders under 10 µm. Storage mandates airtight containers under inert gas to prevent surface oxidation. Bulk quantities are best kept in steel drums with moisture-absorbing desiccants. Unlike some platinum metals, iridium does not form volatile toxic compounds, but combustible dust precautions apply for fine powders during processing.
B2B Procurement Guide
Industrial buyers should specify particle size distribution (PSD), typically ranging from submicron to 500 µm, with tighter tolerances commanding premium pricing. Certification documents should include ICP-MS analysis reports for trace element content, particularly iron, platinum, and rhodium impurities. Lead times for specialty grades may extend to 8-12 weeks due to refining complexity. Consider futures contracts to hedge against price volatility, as iridium spot prices can fluctuate 20-30% annually. For catalytic applications, surface area (BET method) and morphology (SEM verification) are critical quality indicators beyond basic purity assays.
Related Manufacturers
- 主营：全氟聚醚二醇、全氟三丁胺、聚硅氮烷、纳米铱粉、特种硅油、特种硅树脂
- 主营：稀有金属回收、镍靶材回收、铟回收、铱坩埚、ito靶材回收、ito靶粉回收、粗铟回收、精铟回收、铟锭回收、铟丝回收
- 主营：金回收、银回收、钯回收、铂回收、铑回收
- 主营：镍铬合金靶材、镍钒合金靶材、镍铜合金靶材、铱颗粒、铬靶、二硼化钛靶材、钛硅合金靶材、合金熔炼、轧制、锻造、钛铝合金靶材、锰铜阻尼合金、M2052、熔炼加工服务、钛靶材、钨镍铁合金、高熵合金、钴铬镍合金靶材、铝合金熔炼、镍合金熔炼、铜合金熔炼、石墨靶材、钴铬钼合金、铜合金靶材、镍合金靶材、铬合金靶材
- 主营：fto靶材、钐靶材、硼化锆、铱颗粒块锭、硒靶材、铝靶材、钆靶材、铽靶材、氟化镁、钇靶材、钼靶材、铬靶材、镉靶材、钽靶材、硒化锌、氟化镱、砷化镓、硒化锑、碲化镉、镍靶材、钨靶材、铑靶材、铒靶材、铪靶材、锑靶材、碲粉末
- 主营：铱颗粒、中金研、靶材
- 主营：纯铂丝、铂片、铂金坩埚、铂铱丝、铂铱合金棒、铱丝、铱铑丝、铂扁丝、铂管、铂网、铑丝、铂铑丝、纯镍丝、康铜丝、锰铜丝、镍铬丝、电炉丝、电阻带、镍铝丝、铝锶合金、铝硅合金、铝钛合金、铝锆合金、铜磷合金、铜铬合金
- 主营：溅射靶材、合金靶材、特殊合金、铱靶材、高纯材料、试样加工
- 主营：高熵合金、铜靶、铝靶、高纯银颗粒、高纯铜颗粒、高纯铁颗粒、高纯钛颗粒、高纯钴颗粒、高纯铝颗粒、金颗粒、铂颗粒、高纯镍颗粒、钛靶、铬靶、铜合金、铝合金、铁合金(钢)、镍合金、钛合金、纽扣锭
- 主营：铂金坩埚、导电银浆、高纯度铂丝、铂金颗粒、实验室用铂颗粒、铱丝、铂金分析坩埚、黄金丝、铂丝
- 主营：贵金属、稀土金属、大有色金属、小有色金属、准金属、黑色金属、高熵合金、有色金属合金、贵金属合金、稀土合金、难熔金属合金、单元素标准溶液、多元素混合标准溶液、金属合金粉、金属靶材、陶瓷靶材、金属合金靶材、超高纯金属
- 主营：科研实验、合金靶材、真空熔炼、高纯颗粒、镀膜材料、拉伸试样件
- 主营：钨钼加工件、钽铌加工件、铜镶钨电极、铱金属制品、铪金属制品、铍金属制品、电极加工件、稀有金属制品、合金加工件、贵金属加工件
- 主营：纯铂网、纯银网、金丝、纯铱丝、银丝、S/R/B型热电偶丝、铂坩埚
- 主营：加热管、热电偶、高温线、铑丝/铱片、铂金丝、铑粉