Coated barium titanatep based particles and process for prodn. thereof

提供了涂布的钛酸钡基颗粒和涂布该颗粒的方法。该涂层包括碱性条件下不溶于水的掺杂剂金属化合物。涂层中的掺杂剂金属选自碱性条件下其氧化物或氢氧化物可溶于水的金属例如钨、钼、钒和铬。该方法包括从钛酸钡基颗粒涂层表面上的含水介质中沉淀不溶性化合物。该涂布的钛酸钡基颗粒可以进一步加工，例如，成为可以用于许多电子应用例如MLCC应用的介电材料。 Coated barium titanate-based particles and a process to coat the particles are provided. The coating includes a dopant metal compound that is insoluble in water under alkaline conditions. The dopant metal in the coating is selected from the group of metals which form oxides or hydroxides that are soluble in water under alkaline conditions such as tungsten, molybdenum, vanadium, and chromium. The process involves precipitating the insoluble compound from an aqueous medium as a coating on surfaces of barium titanate-based particles. The coated barium titanate-based particles may be further processed, for example, to form dielectric materials which may be used in many electronic applications such as in MLCCs applications.