Q1: What is the maximum operating temperature for platinum rhodium crucibles?
A: According to the different rhodium contents, the temperature resistance varies. Conventional platinum rhodium crucibles can be used up to 1600-1700 ℃, and overheating is prohibited; otherwise, it will accelerate creep deformation and shorten the service life.
Q2: What materials can be melted in a platinum-rhodium crucible,e and which materials cannot be touched?
A: Suitable for molten silicate and some salt samples; It is strictly prohibited to come into contact with metal elements, carbon, phosphorus, sulfur, ur, and other substances. Eutectic reactions may occur at high temperatures, causing corrosion, perforation, and damage to the crucible.
Q3: How to clean and maintain the crucible after use?
A: Generally, dilute acid is boiled and cleaned to remove residue; Do not use hard objects to scrape the inner wall to avoid scratching; Do not forcefully stror and correct after deformation to prevent cracking.
Q4: Will the platinum rhodium crucible deform?
A: Long-term high temperature, overheating, sudden cooling, and heating can cause creep deformation; It is recommended to avoid prolonged high-temperature standing and reduce rapid cooling and heating, which can effectively delay deformation and extend the service life.
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