CORROSION OF HIGH-ALLOY MATERIALS IN AQUEOUS HYDROFLUORIC-ACID ENVIRONMENTS

被引：36

作者：

PAWEL, SJ

机构：

来源：

CORROSION | 1994年 / 50卷 / 12期

关键词：

ALLOY C-22; ALLOY C-276; ALLOY; 20; 400; 600; 825; CONCENTRATION; HYDROFLUORIC ACID; IMMERSION; NICKEL; TEMPERATURE; STAINLESS STEEL; TYPE 316L STAINLESS STEEL; VAPOR;

D O I：

10.5006/1.3293488

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A series of immersion tests for eight high-alloy materials was performed in a variety of hydrofluoric acid (HF) environments. Solution strengths of 0.05%, 1%, 10%, 24%, and 48% HF were examined at 24 degrees C, 50 degrees C, and 76 degrees C. Coupons of each alloy were exposed fully immersed in solution and partially exposed in the aerated vapor above each solution. In addition, a limited number of U-bend tests were performed to examine susceptibility to stress corrosion cracking. Comparison of alloy performance (corrosion rate calculated from weight loss, metallographic evaluation of attack) indicated alloys C-22 (UNS N06022) and C-276 (UNS N10276) exhibited overall superior performance. Other alloys showed useful resistance for a limited range of conditions.

引用

页码：963 / 971

页数：9