Method for analyzing and quantifying total carbon in gold material

A gold and gold ingot technology, applied in the field of analysis and quantification of total carbon in gold materials, can solve problems such as the inability to analyze carbon, existing problems, and the inability to accurately measure carbon content, so as to achieve direct, accurate and convenient removal of total carbon content , The effect of convenient commercial application

Active Publication Date: 2021-03-16
光洋新材料科技(昆山)有限公司
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  • Abstract
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Problems solved by technology

[0005] However, this method has problems for the analysis of carbon content in gold, mainly because carbon will dissolve with gold at high temperature, so carbon cannot be analyzed
Because gold melted at high temperature will have mutual solubility with low-content carbon, so the carbon is dissolved in the gold during the analysis process, and the oxidation reaction cannot be converted into CO 2 Detected by the instrument, so the carbon content cannot be accurately measured

Method used

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Examples

Experimental program
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Embodiment

[0023] A method for analyzing and quantifying total carbon in a gold material, the steps comprising:

[0024] (1) Sample weighing: initially weigh the gold sample and put it into the crucible;

[0025] (2) Vacuum heating: Vacuum the detector, turn on the heating power, the heating method is electron beam heating, the heating time is 30-60min, and the sample becomes a block gold ingot;

[0026] (3) One-time precision weighing: the chamber of the detector breaks the vacuum to 1 atmosphere, opens the chamber and takes out the crucible, then pours out the gold ingots in the crucible together with the black film on the surface, weighs the gold ingots with a balance, and obtains the weight W 1 ;

[0027] (4) Cleaning and carbon removal: Clean the gold ingots with a cleaning agent and wipe off the black matter on the surface with a dust-free cloth;

[0028] (5) Secondary precision scale: weigh the gold ingot after cleaning with a balance to obtain the weight W 2 ;

[0029] (6) C...

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PUM

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Abstract

The invention belongs to the technical field of metal analysis, and particularly relates to a method for analyzing and quantifying total carbon in a gold material, which comprises the following stepsof: weighing a sample, heating in vacuum, precisely weighing for the first time, cleaning and removing carbon, precisely weighing for the second time and calculating the total carbon. According to themethod, the carbon element dissolved in the gold can be converted into a black film floating on the surface of the gold, removal is convenient, the obtained total carbon content is direct and accurate, and commercial application is facilitated.

Description

technical field [0001] The utility model belongs to the technical field of metal analysis, in particular to an analysis and quantification method for total carbon in gold materials. Background technique [0002] The electronics industry and the semiconductor industry have gradually increased the purity requirements of the metal materials used. With the improvement of production technology, the analysis and detection technology of products also needs to be improved accordingly. In addition to metal impurities in high-purity gold, other elements will also exist in gold. The carbon element in the material, especially the impurity, will affect the semiconductor process using high-purity gold, resulting in particles in the gold coating, unstable plating rate, or uneven film thickness during the high-vacuum coating process. [0003] The national standard GBT 25933-2010 for high-purity gold, the purity of high-purity gold is greater than 99.999%, which only controls the metal conte...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N5/04
CPCG01N5/04
Inventor 黄军浩马一峰陈茂军陈佳
Owner 光洋新材料科技(昆山)有限公司
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