论文部分内容阅读
铂族金属有较高的熔点和极稳定的化学性能,已成为玻璃工业中必不可少的耐高温、抗腐蚀材料。 铂的熔点为1769℃,它在铂族金属中的惰性最大,可用于1450℃的高温条件下。所有常规的铂族金属及其合金在高温条件下都会软化,导致金属内部再结晶和晶粒增大,并且慢慢地变形,从而降低了极限强度。 为此,通常在铂中加入10％重量比的铑,铂铑合金能适应较高抗拉强度的工作环境,更
Platinum group metals have a high melting point and extremely stable chemical properties, and have become an essential high temperature and corrosion resistant material in the glass industry. Platinum has a melting point of 1769°C, and it has the highest inertness in platinum group metals and can be used at high temperatures of 1450°C. All conventional platinum group metals and their alloys will soften under high temperature conditions, causing internal recrystallization of the metal and grain growth, and slowly deform, thereby reducing the ultimate strength. To this end, usually 10% by weight of rhenium is added to the platinum, and the platinum iridium alloy can adapt to a higher tensile strength working environment.