铂铑-铂、镍铬-镍硅热电偶的陶瓷保护管常常折断,容易造成热电偶的损坏,我们采用磷酸-高铝矾土调配成较稠的粘结剂涂于断口处进行粘结,三年来,粘结修复了19根陶瓷管,效果良好,操作简单,成本低。具体作法是:将过100目筛的高铝矾土置于塑料容器内,用工业磷酸调成稠浆糊状,经反应后(约1小时),抹一薄 Platinum and rhodium - platinum, nickel chromium - nickel silicon thermocouple ceramic protection tube often broken, likely to cause damage to the thermocouple, we use phosphoric acid - high bauxite deployment into a thicker adhesive applied to the fracture at the bond, In the past three years, 19 ceramic tubes have been bonded and repaired, which has good effect, simple operation and low cost. The specific approach is: the 100 mesh sieve bauxite placed in plastic containers, with industrial phosphoric acid into a thick paste, after the reaction (about 1 hour), wipe a thin