Reinforced platinum-rhodium 10-platinum fine wire for rapid temperature measurement and preparation method

Abstract

The invention relates to a reinforced platinum / rhodium 10-platinum fine thermocouple wire for quick temperature measurement and a preparation method thereof. The material comprises a positive pole PtRh10 material and a negative pole Pt material, wherein the positive pole PtRh10 material comprises the following components in parts by weight: 89.9-90.1 parts of platinum, 9.9-10.1 parts of rhodium, 0-0.003 part of yttrium, 0-0.003 part of zirconium, and 0-0.003 part of cerium; the negative pole Pt material comprises the following components in parts by weight: 99.9-100 parts of platinum, 0-0.003 part of yttrium, 0-0.003 part of zirconium and 0-0.003 part of cerium; and the yttrium, zirconium and cerium are distributed in the material matrix in a dispersed manner in the form of fine oxide. When the materials are prepared into the platinum / rhodium thermocouple wire, the minimum diameter is phi0.035mm, and the application range is phi0.035-0.07mm. The reinforced platinum / rhodium 10-platinum fine thermocouple wire has the properties of quick, accurate and stable temperature measurement, high reliability, high strength and the like.

Description

technical field [0001] The invention belongs to the field of precious metal materials, and in particular relates to a reinforced platinum-rhodium 10-platinum fine wire for rapid temperature measurement and a preparation method thereof. Background technique [0002] In the smelting industry, the requirements for measuring the temperature of molten steel are fast, accurate, and stable. Only when the above requirements are met can the precise control of the key processes of iron and steel smelting and processing be realized. The material used for temperature measurement of molten steel belongs to fast-consumption thermocouple material (referred to as fast couple material), which is mainly platinum-rhodium series thermocouple fine wire. The smaller the diameter, the faster the reaction time. At present, the diameter of the fine platinum-rhodium wire used for domestic molten steel temperature measurement is usually , can not measure temperature more quickly, accurately and sta...

AI Technical Summary

Problems solved by technology

At present, the diameter of the fine platinum-rhodium wire used for domestic molten steel temperature measurement is usually , can not measure temperature more quickly, accurately and stably, and affect the process control of iron and steel smelting

At the same time, when preparing platinum-rhodium paired wire, the thinner the wire, the lower the yield rate due to poor strength and flatness is difficult to control

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