COMPARISON OF CRITICAL PITTING TEMPERATURES FOR OIL INDUSTRY STEELS USING ELECTROCHEMICAL NOISE

J Chin Soc Corr Pro

2009, Vol. 29

Issue (6): 421-425 DOI:

技术报告

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COMPARISON OF CRITICAL PITTING TEMPERATURES FOR OIL INDUSTRY STEELS USING ELECTROCHEMICAL NOISE

WENG Yongji¹; LI Weifeng^2;1; LI Xiangyi¹

1. Mechanical and Electronic Engineering; China University of Petroleum; Beijing 102200
2. CNOOC Engineering Ltd; Tianjin 300451

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Abstract

A newly experimental method is proposed for determination of the critical pitting temperature (CPT) of metals. The current noise of steel coupon is measured during the continuous heating process in ASTM standard solution. CPT is determined based on assessment of the maximal transition point in the item of standard deviation of current noise. The CPT values of eight steels commonly used in oil industry are measured by this quick and easy method.

Key words: oil industry steels critical pitting temperature electrochemical noise standard deviation of current noise experimental method

Received: 04 March 2008

ZTFLH:

TG174.3

Corresponding Authors: WENG Yongji E-mail: wengyj @cup.edu.cn

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Cite this article:

WENG Yongji LI Weifeng LI Xiangyi. COMPARISON OF CRITICAL PITTING TEMPERATURES FOR OIL INDUSTRY STEELS USING ELECTROCHEMICAL NOISE. J Chin Soc Corr Pro, 2009, 29(6): 421-425.

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https://www.jcscp.org/EN/ OR https://www.jcscp.org/EN/Y2009/V29/I6/421

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